diff --git a/core/includes/menu.inc b/core/includes/menu.inc
index 915f809044756316afb4e546e728e5b3c4b6dd32..248659410e60336f94b11554fd41f1dcd37b99ee 100644
--- a/core/includes/menu.inc
+++ b/core/includes/menu.inc
@@ -1008,7 +1008,7 @@ function menu_item_route_access(Route $route, $href, &$map) {
  * "story" content type:
  * @code
  * $node = menu_get_object();
- * $story = $node->type == 'story';
+ * $story = $node->getType() == 'story';
  * @endcode
  *
  * @param $type
diff --git a/core/includes/theme.inc b/core/includes/theme.inc
index d0161abdea1c77f583ff5a49e997626a957e0d7d..8cbdd1b1ddfc1c2a7019452a9950d46c16ccb735 100644
--- a/core/includes/theme.inc
+++ b/core/includes/theme.inc
@@ -2534,7 +2534,7 @@ function template_preprocess_html(&$variables) {
 
   // If on an individual node page, add the node type to body classes.
   if ($node = menu_get_object()) {
-    $variables['attributes']['class'][] = drupal_html_class('node-type-' . $node->type);
+    $variables['attributes']['class'][] = drupal_html_class('node-type-' . $node->getType());
   }
 
   // Initializes attributes which are specific to the html and body elements.
diff --git a/core/modules/action/lib/Drupal/action/Tests/BulkFormTest.php b/core/modules/action/lib/Drupal/action/Tests/BulkFormTest.php
index 8a86279cddc7f7019e67e90dbbed9c4834534679..2ae5dea2412d5ba72ab0c0e306f8e1b16d5adfa6 100644
--- a/core/modules/action/lib/Drupal/action/Tests/BulkFormTest.php
+++ b/core/modules/action/lib/Drupal/action/Tests/BulkFormTest.php
@@ -64,14 +64,14 @@ public function testBulkForm() {
 
     foreach ($nodes as $node) {
       $changed_node = node_load($node->id());
-      $this->assertTrue($changed_node->sticky, format_string('Node @nid got marked as sticky.', array('@nid' => $node->id())));
+      $this->assertTrue($changed_node->isSticky(), format_string('Node @nid got marked as sticky.', array('@nid' => $node->id())));
     }
 
     $this->assertText('Make content sticky was applied to 10 items.');
 
     // Unpublish just one node.
     $node = node_load($nodes[0]->id());
-    $this->assertTrue($node->status, 'The node is published.');
+    $this->assertTrue($node->isPublished(), 'The node is published.');
 
     $edit = array('action_bulk_form[0]' => TRUE, 'action' => 'node_unpublish_action');
     $this->drupalPost(NULL, $edit, t('Apply'));
@@ -80,11 +80,11 @@ public function testBulkForm() {
 
     // Load the node again.
     $node = node_load($node->id(), TRUE);
-    $this->assertFalse($node->status, 'A single node has been unpublished.');
+    $this->assertFalse($node->isPublished(), 'A single node has been unpublished.');
 
     // The second node should still be published.
     $node = node_load($nodes[1]->id(), TRUE);
-    $this->assertTrue($node->status, 'An unchecked node is still published.');
+    $this->assertTrue($node->isPublished(), 'An unchecked node is still published.');
 
     // Set up to include just the sticky actions.
     $view = views_get_view('test_bulk_form');
diff --git a/core/modules/book/book.module b/core/modules/book/book.module
index ac26714b7465c669a9ec264cdf9ae59937f7babd..42499462b66d5938589cac7c32e14a316f8dbb45 100644
--- a/core/modules/book/book.module
+++ b/core/modules/book/book.module
@@ -120,13 +120,13 @@ function book_permission() {
  * @param $view_mode
  *   The view mode of the node.
  */
-function book_node_view_link(EntityInterface $node, $view_mode) {
+function book_node_view_link(NodeInterface $node, $view_mode) {
   $links = array();
 
   if (isset($node->book['depth'])) {
     if ($view_mode == 'full' && node_is_page($node)) {
       $child_type = Drupal::config('book.settings')->get('child_type');
-      if ((user_access('add content to books') || user_access('administer book outlines')) && node_access('create', $child_type) && $node->status == 1 && $node->book['depth'] < MENU_MAX_DEPTH) {
+      if ((user_access('add content to books') || user_access('administer book outlines')) && node_access('create', $child_type) && $node->isPublished() && $node->book['depth'] < MENU_MAX_DEPTH) {
         $links['book_add_child'] = array(
           'title' => t('Add child page'),
           'href' => 'node/add/' . $child_type,
@@ -307,7 +307,7 @@ function book_form_node_form_alter(&$form, &$form_state, $form_id) {
   $node = $form_state['controller']->getEntity();
   $access = user_access('administer book outlines');
   if (!$access) {
-    if (user_access('add content to books') && ((!empty($node->book['mlid']) && !$node->isNew()) || book_type_is_allowed($node->type))) {
+    if (user_access('add content to books') && ((!empty($node->book['mlid']) && !$node->isNew()) || book_type_is_allowed($node->getType()))) {
       // Already in the book hierarchy, or this node type is allowed.
       $access = TRUE;
     }
diff --git a/core/modules/comment/comment.module b/core/modules/comment/comment.module
index a68f39b39660b8fbb37c25bc328d626fa03a0d0e..1af78a5e75dfa77f709fcff7940b0294d49d4242 100644
--- a/core/modules/comment/comment.module
+++ b/core/modules/comment/comment.module
@@ -432,8 +432,8 @@ function comment_get_recent($number = 10) {
  *   "page=X" if the page number is greater than zero; empty string otherwise.
  */
 function comment_new_page_count($num_comments, $new_replies, EntityInterface $node) {
-  $mode = variable_get('comment_default_mode_' . $node->type, COMMENT_MODE_THREADED);
-  $comments_per_page = variable_get('comment_default_per_page_' . $node->type, 50);
+  $mode = variable_get('comment_default_mode_' . $node->getType(), COMMENT_MODE_THREADED);
+  $comments_per_page = variable_get('comment_default_per_page_' . $node->getType(), 50);
   $pagenum = NULL;
   $flat = $mode == COMMENT_MODE_FLAT ? TRUE : FALSE;
   if ($num_comments <= $comments_per_page) {
@@ -551,7 +551,7 @@ function comment_node_view(EntityInterface $node, EntityDisplay $display, $view_
         }
       }
       if ($node->comment == COMMENT_NODE_OPEN) {
-        $comment_form_location = variable_get('comment_form_location_' . $node->type, COMMENT_FORM_BELOW);
+        $comment_form_location = variable_get('comment_form_location_' . $node->getType(), COMMENT_FORM_BELOW);
         if (user_access('post comments')) {
           $links['comment-add'] = array(
             'title' => t('Add new comment'),
@@ -581,7 +581,7 @@ function comment_node_view(EntityInterface $node, EntityDisplay $display, $view_
       // But we don't want this link if we're building the node for search
       // indexing or constructing a search result excerpt.
       if ($node->comment == COMMENT_NODE_OPEN) {
-        $comment_form_location = variable_get('comment_form_location_' . $node->type, COMMENT_FORM_BELOW);
+        $comment_form_location = variable_get('comment_form_location_' . $node->getType(), COMMENT_FORM_BELOW);
         if (user_access('post comments')) {
           // Show the "post comment" link if the form is on another page, or
           // if there are existing comments that the link will skip past.
@@ -643,8 +643,8 @@ function comment_node_page_additions(EntityInterface $node) {
   // Unpublished comments are not included in $node->comment_count, so show
   // comments unconditionally if the user is an administrator.
   if (($node->comment_count && user_access('access comments')) || user_access('administer comments')) {
-    $mode = variable_get('comment_default_mode_' . $node->type, COMMENT_MODE_THREADED);
-    $comments_per_page = variable_get('comment_default_per_page_' . $node->type, 50);
+    $mode = variable_get('comment_default_mode_' . $node->getType(), COMMENT_MODE_THREADED);
+    $comments_per_page = variable_get('comment_default_per_page_' . $node->getType(), 50);
     if ($cids = comment_get_thread($node, $mode, $comments_per_page)) {
       $comments = comment_load_multiple($cids);
       comment_prepare_thread($comments);
@@ -655,13 +655,13 @@ function comment_node_page_additions(EntityInterface $node) {
   }
 
   // Append comment form if needed.
-  if (user_access('post comments') && $node->comment == COMMENT_NODE_OPEN && (variable_get('comment_form_location_' . $node->type, COMMENT_FORM_BELOW) == COMMENT_FORM_BELOW)) {
+  if (user_access('post comments') && $node->comment == COMMENT_NODE_OPEN && (variable_get('comment_form_location_' . $node->getType(), COMMENT_FORM_BELOW) == COMMENT_FORM_BELOW)) {
     $additions['comment_form'] = comment_add($node);
   }
 
   if ($additions) {
     $additions += array(
-      '#theme' => 'comment_wrapper__node_' . $node->type,
+      '#theme' => 'comment_wrapper__node_' . $node->getType(),
       '#node' => $node,
       'comments' => array(),
       'comment_form' => array(),
@@ -684,7 +684,7 @@ function comment_node_page_additions(EntityInterface $node) {
  *   The renderable array for the comment addition form.
  */
 function comment_add(EntityInterface $node, $pid = NULL) {
-  $values = array('nid' => $node->id(), 'pid' => $pid, 'node_type' => 'comment_node_' . $node->type);
+  $values = array('nid' => $node->id(), 'pid' => $pid, 'node_type' => 'comment_node_' . $node->getType());
   $comment = entity_create('comment', $values);
   return Drupal::entityManager()->getForm($comment);
 }
@@ -1118,9 +1118,9 @@ function comment_node_load($nodes, $types) {
     }
     else {
       $node->cid = 0;
-      $node->last_comment_timestamp = $node->created;
+      $node->last_comment_timestamp = $node->getCreatedTime();
       $node->last_comment_name = '';
-      $node->last_comment_uid = $node->uid;
+      $node->last_comment_uid = $node->getAuthorId();
       $node->comment_count = 0;
     }
   }
@@ -1143,7 +1143,7 @@ function comment_node_load($nodes, $types) {
  */
 function comment_node_prepare_form(NodeInterface $node, $form_display, $operation, array &$form_state) {
   if (!isset($node->comment)) {
-    $node->comment = variable_get("comment_$node->type", COMMENT_NODE_OPEN);
+    $node->comment = variable_get('comment_' . $node->getType(), COMMENT_NODE_OPEN);
   }
 }
 
@@ -1158,9 +1158,9 @@ function comment_node_insert(EntityInterface $node) {
       ->fields(array(
         'nid' => $node->id(),
         'cid' => 0,
-        'last_comment_timestamp' => $node->changed,
+        'last_comment_timestamp' => $node->getChangedTime(),
         'last_comment_name' => NULL,
-        'last_comment_uid' => $node->uid,
+        'last_comment_uid' => $node->getAuthorId(),
         'comment_count' => 0,
       ))
       ->execute();
@@ -1208,8 +1208,8 @@ function comment_node_update_index(EntityInterface $node, $langcode) {
   }
 
   if ($index_comments) {
-    $mode = variable_get('comment_default_mode_' . $node->type, COMMENT_MODE_THREADED);
-    $comments_per_page = variable_get('comment_default_per_page_' . $node->type, 50);
+    $mode = variable_get('comment_default_mode_' . $node->getType(), COMMENT_MODE_THREADED);
+    $comments_per_page = variable_get('comment_default_per_page_' . $node->getType(), 50);
     if ($node->comment && $cids = comment_get_thread($node, $mode, $comments_per_page)) {
       $comments = comment_load_multiple($cids);
       comment_prepare_thread($comments);
@@ -1610,7 +1610,7 @@ function template_preprocess_comment(&$variables) {
     $variables['attributes']['class'][] = 'by-anonymous';
   }
   else {
-    if ($comment->uid->target_id == $variables['node']->uid) {
+    if ($comment->uid->target_id == $variables['node']->getAuthorId()) {
       $variables['attributes']['class'][] = 'by-node-author';
     }
     if ($comment->uid->target_id == $variables['user']->id()) {
@@ -1651,7 +1651,7 @@ function theme_comment_post_forbidden($variables) {
     if ($authenticated_post_comments) {
       // We cannot use drupal_get_destination() because these links
       // sometimes appear on /node and taxonomy listing pages.
-      if (variable_get('comment_form_location_' . $node->type, COMMENT_FORM_BELOW) == COMMENT_FORM_SEPARATE_PAGE) {
+      if (variable_get('comment_form_location_' . $node->getType(), COMMENT_FORM_BELOW) == COMMENT_FORM_SEPARATE_PAGE) {
         $destination = array('destination' => 'comment/reply/' . $node->id() . '#comment-form');
       }
       else {
@@ -1683,7 +1683,7 @@ function theme_comment_post_forbidden($variables) {
 function template_preprocess_comment_wrapper(&$variables) {
   // Provide contextual information.
   $variables['node'] = $variables['content']['#node'];
-  $variables['display_mode'] = variable_get('comment_default_mode_' . $variables['node']->type, COMMENT_MODE_THREADED);
+  $variables['display_mode'] = variable_get('comment_default_mode_' . $variables['node']->getType(), COMMENT_MODE_THREADED);
 
   // The comment form is optional and may not exist.
   $variables['content'] += array('comment_form' => array());
diff --git a/core/modules/comment/lib/Drupal/comment/CommentFormController.php b/core/modules/comment/lib/Drupal/comment/CommentFormController.php
index d5a4a508edf263ec15c76d27b28a09b014da0d97..3cef2ff757750882cba244883622aafad93db779 100644
--- a/core/modules/comment/lib/Drupal/comment/CommentFormController.php
+++ b/core/modules/comment/lib/Drupal/comment/CommentFormController.php
@@ -26,9 +26,9 @@ public function form(array $form, array &$form_state) {
 
     // Use #comment-form as unique jump target, regardless of node type.
     $form['#id'] = drupal_html_id('comment_form');
-    $form['#theme'] = array('comment_form__node_' . $node->type, 'comment_form');
+    $form['#theme'] = array('comment_form__node_' . $node->getType(), 'comment_form');
 
-    $anonymous_contact = variable_get('comment_anonymous_' . $node->type, COMMENT_ANONYMOUS_MAYNOT_CONTACT);
+    $anonymous_contact = variable_get('comment_anonymous_' . $node->getType(), COMMENT_ANONYMOUS_MAYNOT_CONTACT);
     $is_admin = $comment->id() && user_access('administer comments');
 
     if (!$user->isAuthenticated() && $anonymous_contact != COMMENT_ANONYMOUS_MAYNOT_CONTACT) {
@@ -145,7 +145,7 @@ public function form(array $form, array &$form_state) {
       '#title' => t('Subject'),
       '#maxlength' => 64,
       '#default_value' => $comment->subject->value,
-      '#access' => variable_get('comment_subject_field_' . $node->type, 1) == 1,
+      '#access' => variable_get('comment_subject_field_' . $node->getType(), 1) == 1,
     );
 
     // Used for conditional validation of author fields.
@@ -178,7 +178,7 @@ protected function actions(array $form, array &$form_state) {
     $element = parent::actions($form, $form_state);
     $comment = $this->entity;
     $node = $comment->nid->entity;
-    $preview_mode = variable_get('comment_preview_' . $node->type, DRUPAL_OPTIONAL);
+    $preview_mode = variable_get('comment_preview_' . $node->getType(), DRUPAL_OPTIONAL);
 
     // No delete action on the comment form.
     unset($element['delete']);
@@ -341,7 +341,7 @@ public function save(array $form, array &$form_state) {
       }
       $query = array();
       // Find the current display page for this comment.
-      $page = comment_get_display_page($comment->id(), $node->type);
+      $page = comment_get_display_page($comment->id(), $node->getType());
       if ($page > 0) {
         $query['page'] = $page;
       }
diff --git a/core/modules/comment/lib/Drupal/comment/Controller/CommentController.php b/core/modules/comment/lib/Drupal/comment/Controller/CommentController.php
index 84ef0c1a8fea3ed89c9091bc53f88a127d612000..6bd628e50123c6adc9ef1f1c444f7e92202c1e78 100644
--- a/core/modules/comment/lib/Drupal/comment/Controller/CommentController.php
+++ b/core/modules/comment/lib/Drupal/comment/Controller/CommentController.php
@@ -121,7 +121,7 @@ public function commentPermalink(Request $request, CommentInterface $comment) {
         throw new AccessDeniedHttpException();
       }
       // Find the current display page for this comment.
-      $page = comment_get_display_page($comment->id(), $node->type);
+      $page = comment_get_display_page($comment->id(), $node->getType());
       // @todo: Cleaner sub request handling.
       $redirect_request = Request::create('/node/' . $node->id(), 'GET', $request->query->all(), $request->cookies->all(), array(), $request->server->all());
       $redirect_request->query->set('page', $page);
diff --git a/core/modules/comment/lib/Drupal/comment/Plugin/Core/Entity/Comment.php b/core/modules/comment/lib/Drupal/comment/Plugin/Core/Entity/Comment.php
index 5bad9ea4b43865b61c8dc4aa0c592d7292f6ad4b..2b711dda3a5fff6d2b850f449970838b23de9894 100644
--- a/core/modules/comment/lib/Drupal/comment/Plugin/Core/Entity/Comment.php
+++ b/core/modules/comment/lib/Drupal/comment/Plugin/Core/Entity/Comment.php
@@ -217,7 +217,7 @@ public function id() {
   public static function preCreate(EntityStorageControllerInterface $storage_controller, array &$values) {
     if (empty($values['node_type']) && !empty($values['nid'])) {
       $node = node_load(is_object($values['nid']) ? $values['nid']->value : $values['nid']);
-      $values['node_type'] = 'comment_node_' . $node->type;
+      $values['node_type'] = 'comment_node_' . $node->getType();
     }
   }
 
diff --git a/core/modules/comment/lib/Drupal/comment/Tests/CommentLinksTest.php b/core/modules/comment/lib/Drupal/comment/Tests/CommentLinksTest.php
index 5e40a7b62f14d466aea04422119b5c0a82fd4ed7..fd86097fba369c1272e886a7af983f2bb4233740 100644
--- a/core/modules/comment/lib/Drupal/comment/Tests/CommentLinksTest.php
+++ b/core/modules/comment/lib/Drupal/comment/Tests/CommentLinksTest.php
@@ -143,7 +143,7 @@ function setEnvironment(array $info) {
         $comment = entity_create('comment', array(
           'cid' => NULL,
           'nid' => $this->node->id(),
-          'node_type' => $this->node->type,
+          'node_type' => $this->node->getType(),
           'pid' => 0,
           'uid' => 0,
           'status' => COMMENT_PUBLISHED,
@@ -167,8 +167,8 @@ function setEnvironment(array $info) {
     }
 
     // Change comment settings.
-    variable_set('comment_form_location_' . $this->node->type, $info['form']);
-    variable_set('comment_anonymous_' . $this->node->type, $info['contact']);
+    variable_set('comment_form_location_' . $this->node->getType(), $info['form']);
+    variable_set('comment_anonymous_' . $this->node->getType(), $info['contact']);
     if ($this->node->comment != $info['comments']) {
       $this->node->comment = $info['comments'];
       $this->node->save();
diff --git a/core/modules/comment/lib/Drupal/comment/Tests/CommentNewIndicatorTest.php b/core/modules/comment/lib/Drupal/comment/Tests/CommentNewIndicatorTest.php
index 04fc481a8cdedc567907754a4466915e5f44d898..55deb614d72ce69552e7a4aae9179946339be6a5 100644
--- a/core/modules/comment/lib/Drupal/comment/Tests/CommentNewIndicatorTest.php
+++ b/core/modules/comment/lib/Drupal/comment/Tests/CommentNewIndicatorTest.php
@@ -49,7 +49,7 @@ public function testCommentNewCommentsIndicator() {
     $comment = entity_create('comment', array(
       'cid' => NULL,
       'nid' => $this->node->id(),
-      'node_type' => $this->node->type,
+      'node_type' => $this->node->getType(),
       'pid' => 0,
       'uid' => $this->loggedInUser->id(),
       'status' => COMMENT_PUBLISHED,
diff --git a/core/modules/comment/lib/Drupal/comment/Tests/CommentStatisticsTest.php b/core/modules/comment/lib/Drupal/comment/Tests/CommentStatisticsTest.php
index 2e6aab38c060a321aced6cb32b643e27bdc95f7b..e471421fd679773aa8808670d97a5acf086080ff 100644
--- a/core/modules/comment/lib/Drupal/comment/Tests/CommentStatisticsTest.php
+++ b/core/modules/comment/lib/Drupal/comment/Tests/CommentStatisticsTest.php
@@ -49,7 +49,7 @@ function testCommentNodeCommentStatistics() {
 
     // Checks the initial values of node comment statistics with no comment.
     $node = node_load($this->node->id());
-    $this->assertEqual($node->last_comment_timestamp, $this->node->created, 'The initial value of node last_comment_timestamp is the node created date.');
+    $this->assertEqual($node->last_comment_timestamp, $this->node->getCreatedTime(), 'The initial value of node last_comment_timestamp is the node created date.');
     $this->assertEqual($node->last_comment_name, NULL, 'The initial value of node last_comment_name is NULL.');
     $this->assertEqual($node->last_comment_uid, $this->web_user->id(), 'The initial value of node last_comment_uid is the node uid.');
     $this->assertEqual($node->comment_count, 0, 'The initial value of node comment_count is zero.');
diff --git a/core/modules/comment/lib/Drupal/comment/Tests/CommentTokenReplaceTest.php b/core/modules/comment/lib/Drupal/comment/Tests/CommentTokenReplaceTest.php
index 35724752a38c442f2cecac1ce9a56fe0920f98fb..1819b1039c4503f115312c9a8259b70a61bf8d24 100644
--- a/core/modules/comment/lib/Drupal/comment/Tests/CommentTokenReplaceTest.php
+++ b/core/modules/comment/lib/Drupal/comment/Tests/CommentTokenReplaceTest.php
@@ -67,7 +67,7 @@ function testCommentTokenReplacement() {
     $tests['[comment:parent:cid]'] = $comment->pid->target_id;
     $tests['[comment:parent:title]'] = check_plain($parent_comment->subject->value);
     $tests['[comment:node:nid]'] = $comment->nid->target_id;
-    $tests['[comment:node:title]'] = check_plain($node->title);
+    $tests['[comment:node:title]'] = check_plain($node->getTitle());
     $tests['[comment:author:uid]'] = $comment->uid->target_id;
     $tests['[comment:author:name]'] = check_plain($this->admin_user->getUsername());
 
@@ -87,7 +87,7 @@ function testCommentTokenReplacement() {
     $tests['[comment:title]'] = $comment->subject->value;
     $tests['[comment:body]'] = $comment->comment_body->value;
     $tests['[comment:parent:title]'] = $parent_comment->subject->value;
-    $tests['[comment:node:title]'] = $node->title;
+    $tests['[comment:node:title]'] = $node->getTitle();
     $tests['[comment:author:name]'] = $this->admin_user->getUsername();
 
     foreach ($tests as $input => $expected) {
diff --git a/core/modules/comment/lib/Drupal/comment/Tests/CommentTranslationUITest.php b/core/modules/comment/lib/Drupal/comment/Tests/CommentTranslationUITest.php
index 296a3e25c8ca2e497578cb83d816480f10a36766..5c256603b6e82b0cb89cd2bb2b84bfa9d4c2f6bb 100644
--- a/core/modules/comment/lib/Drupal/comment/Tests/CommentTranslationUITest.php
+++ b/core/modules/comment/lib/Drupal/comment/Tests/CommentTranslationUITest.php
@@ -77,7 +77,7 @@ protected function createEntity($values, $langcode, $node_bundle = NULL) {
     }
     $node = $this->drupalCreateNode(array('type' => $node_bundle));
     $values['nid'] = $node->id();
-    $values['uid'] = $node->uid;
+    $values['uid'] = $node->getAuthorId();
     return parent::createEntity($values, $langcode);
   }
 
diff --git a/core/modules/comment/lib/Drupal/comment/Tests/Views/CommentTestBase.php b/core/modules/comment/lib/Drupal/comment/Tests/Views/CommentTestBase.php
index 138c5d02d7cad113e3e35754fa808be807537a7b..dabf53f0246a217fb22fc6d8533a22ed35b4607d 100644
--- a/core/modules/comment/lib/Drupal/comment/Tests/Views/CommentTestBase.php
+++ b/core/modules/comment/lib/Drupal/comment/Tests/Views/CommentTestBase.php
@@ -41,7 +41,7 @@ function setUp() {
     $this->drupalLogin($this->account);
 
     $this->node_user_posted = $this->drupalCreateNode();
-    $this->node_user_commented = $this->drupalCreateNode(array('uid' => $this->account2->uid));
+    $this->node_user_commented = $this->drupalCreateNode(array('uid' => $this->account2->id()));
 
     $comment = array(
       'uid' => $this->loggedInUser->id(),
diff --git a/core/modules/comment/lib/Drupal/comment/Tests/Views/DefaultViewRecentComments.php b/core/modules/comment/lib/Drupal/comment/Tests/Views/DefaultViewRecentComments.php
index 6ffa95e461250e632550581528ccb6920fd80359..f4a4316719c359ae4bab9b943d9310c1d69de090 100644
--- a/core/modules/comment/lib/Drupal/comment/Tests/Views/DefaultViewRecentComments.php
+++ b/core/modules/comment/lib/Drupal/comment/Tests/Views/DefaultViewRecentComments.php
@@ -77,7 +77,7 @@ public function setUp() {
 
     // Create some comments and attach them to the created node.
     for ($i = 0; $i < $this->masterDisplayResults; $i++) {
-      $comment = entity_create('comment', array('node_type' => 'comment_node_' . $this->node->type));
+      $comment = entity_create('comment', array('node_type' => 'comment_node_' . $this->node->getType()));
       $comment->uid->target_id = 0;
       $comment->nid->target_id = $this->node->id();
       $comment->subject->value = 'Test comment ' . $i;
diff --git a/core/modules/datetime/datetime.module b/core/modules/datetime/datetime.module
index eafc616926d0f7293fdc0941bf23dd8cceaedc41..0da06cb4c8fa2cc9e6a5344d5101825094b835d2 100644
--- a/core/modules/datetime/datetime.module
+++ b/core/modules/datetime/datetime.module
@@ -1049,5 +1049,5 @@ function datetime_form_node_form_alter(&$form, &$form_state, $form_id) {
  */
 function datetime_node_prepare_form(NodeInterface $node, $form_display, $operation, array &$form_state) {
   // Prepare the 'Authored on' date to use datetime.
-  $node->date = DrupalDateTime::createFromTimestamp($node->created);
+  $node->date = DrupalDateTime::createFromTimestamp($node->getCreatedTime());
 }
diff --git a/core/modules/entity_reference/lib/Drupal/entity_reference/Tests/Views/SelectionTest.php b/core/modules/entity_reference/lib/Drupal/entity_reference/Tests/Views/SelectionTest.php
index cad4bd8e8d3606b6511c04749d69b3eef29303cc..c9b8d62e6a4139ca7d1392ef19ff8720cd35162e 100644
--- a/core/modules/entity_reference/lib/Drupal/entity_reference/Tests/Views/SelectionTest.php
+++ b/core/modules/entity_reference/lib/Drupal/entity_reference/Tests/Views/SelectionTest.php
@@ -36,7 +36,7 @@ public function testSelectionHandler() {
 
     $nodes = array();
     foreach (array($node1, $node2, $node3) as $node) {
-      $nodes[$node->type][$node->id()] = $node->label();
+      $nodes[$node->getType()][$node->id()] = $node->label();
     }
 
     // Create a field and instance.
diff --git a/core/modules/file/lib/Drupal/file/Tests/FileFieldRevisionTest.php b/core/modules/file/lib/Drupal/file/Tests/FileFieldRevisionTest.php
index d9604cc84105900f2531430bdb813559873add73..a6225b501062f87c22722064ee61293c7e08b277 100644
--- a/core/modules/file/lib/Drupal/file/Tests/FileFieldRevisionTest.php
+++ b/core/modules/file/lib/Drupal/file/Tests/FileFieldRevisionTest.php
@@ -48,7 +48,7 @@ function testRevisions() {
     // Check that the file exists on disk and in the database.
     $node = node_load($nid, TRUE);
     $node_file_r1 = file_load($node->{$field_name}[Language::LANGCODE_NOT_SPECIFIED][0]['target_id']);
-    $node_vid_r1 = $node->vid;
+    $node_vid_r1 = $node->getRevisionId();
     $this->assertFileExists($node_file_r1, 'New file saved to disk on node creation.');
     $this->assertFileEntryExists($node_file_r1, 'File entry exists in database on node creation.');
     $this->assertFileIsPermanent($node_file_r1, 'File is permanent.');
@@ -57,7 +57,7 @@ function testRevisions() {
     $this->replaceNodeFile($test_file, $field_name, $nid);
     $node = node_load($nid, TRUE);
     $node_file_r2 = file_load($node->{$field_name}[Language::LANGCODE_NOT_SPECIFIED][0]['target_id']);
-    $node_vid_r2 = $node->vid;
+    $node_vid_r2 = $node->getRevisionId();
     $this->assertFileExists($node_file_r2, 'Replacement file exists on disk after creating new revision.');
     $this->assertFileEntryExists($node_file_r2, 'Replacement file entry exists in database after creating new revision.');
     $this->assertFileIsPermanent($node_file_r2, 'Replacement file is permanent.');
@@ -75,7 +75,7 @@ function testRevisions() {
     $this->drupalPost('node/' . $nid . '/edit', array('revision' => '1'), t('Save and keep published'));
     $node = node_load($nid, TRUE);
     $node_file_r3 = file_load($node->{$field_name}[Language::LANGCODE_NOT_SPECIFIED][0]['target_id']);
-    $node_vid_r3 = $node->vid;
+    $node_vid_r3 = $node->getRevisionId();
     $this->assertEqual($node_file_r2->id(), $node_file_r3->id(), 'Previous revision file still in place after creating a new revision without a new file.');
     $this->assertFileIsPermanent($node_file_r3, 'New revision file is permanent.');
 
@@ -83,7 +83,7 @@ function testRevisions() {
     $this->drupalPost('node/' . $nid . '/revisions/' . $node_vid_r1 . '/revert', array(), t('Revert'));
     $node = node_load($nid, TRUE);
     $node_file_r4 = file_load($node->{$field_name}[Language::LANGCODE_NOT_SPECIFIED][0]['target_id']);
-    $node_vid_r4 = $node->vid;
+    $node_vid_r4 = $node->getRevisionId();
     $this->assertEqual($node_file_r1->id(), $node_file_r4->id(), 'Original revision file still in place after reverting to the original revision.');
     $this->assertFileIsPermanent($node_file_r4, 'Original revision file still permanent after reverting to the original revision.');
 
diff --git a/core/modules/file/lib/Drupal/file/Tests/FileFieldTestBase.php b/core/modules/file/lib/Drupal/file/Tests/FileFieldTestBase.php
index 358289343ea39801e16798e08a55a45d097a095d..ba51a175d315d1a3dc047844ef6b810b95ced626 100644
--- a/core/modules/file/lib/Drupal/file/Tests/FileFieldTestBase.php
+++ b/core/modules/file/lib/Drupal/file/Tests/FileFieldTestBase.php
@@ -155,7 +155,7 @@ function uploadNodeFile($file, $field_name, $nid_or_type, $new_revision = TRUE,
       $node->setNewRevision();
       $node->save();
       $node = node_load($nid, TRUE);
-      $this->assertNotEqual($nid, $node->vid, 'Node revision exists.');
+      $this->assertNotEqual($nid, $node->getRevisionId(), 'Node revision exists.');
     }
 
     // Attach a file to the node.
diff --git a/core/modules/file/lib/Drupal/file/Tests/FileListingTest.php b/core/modules/file/lib/Drupal/file/Tests/FileListingTest.php
index e8a2f5da8e98ce0c877e3aac81d3d634bbe0ad53..693f23693176bdf20d0da19d7a10821babb189bb 100644
--- a/core/modules/file/lib/Drupal/file/Tests/FileListingTest.php
+++ b/core/modules/file/lib/Drupal/file/Tests/FileListingTest.php
@@ -75,14 +75,14 @@ function testFileListingPages() {
     }
 
     foreach ($nodes as &$node) {
-      $this->drupalGet('node/' . $node->nid . '/edit');
+      $this->drupalGet('node/' . $node->id() . '/edit');
       $file = $this->getTestFile('image');
 
       $edit = array(
         'files[file_' . Language::LANGCODE_NOT_SPECIFIED . '_' . 0 . ']' => drupal_realpath($file->getFileUri()),
       );
       $this->drupalPost(NULL, $edit, t('Save'));
-      $node = entity_load('node', $node->nid)->getNGEntity();
+      $node = entity_load('node', $node->id())->getNGEntity();
     }
 
     $this->drupalGet('admin/content/files');
diff --git a/core/modules/forum/forum.module b/core/modules/forum/forum.module
index 46921af74dffc8ac580e428ea2bad14e8e5be201..886423644440da0277f82257e4e017db837a4b03 100644
--- a/core/modules/forum/forum.module
+++ b/core/modules/forum/forum.module
@@ -6,7 +6,7 @@
  */
 
 use Drupal\Core\Entity\EntityInterface;
-use Drupal\entity\Plugin\Core\Entity\EntityDisplay;
+use Drupal\node\NodeInterface;
 use Drupal\taxonomy\Plugin\Core\Entity\Term;
 
 /**
@@ -264,7 +264,7 @@ function forum_uri($forum) {
  */
 function _forum_node_check_node_type(EntityInterface $node) {
   // Fetch information about the forum field.
-  $instance = field_info_instance('node', 'taxonomy_forums', $node->type);
+  $instance = field_info_instance('node', 'taxonomy_forums', $node->getType());
   return !empty($instance);
 }
 
@@ -341,7 +341,7 @@ function forum_node_update(EntityInterface $node) {
       if (!empty($node->forum_tid)) {
         db_update('forum')
           ->fields(array('tid' => $node->forum_tid))
-          ->condition('vid', $node->vid)
+          ->condition('vid', $node->getRevisionId())
           ->execute();
       }
       // The node is removed from the forum.
@@ -356,7 +356,7 @@ function forum_node_update(EntityInterface $node) {
         db_insert('forum')
           ->fields(array(
             'tid' => $node->forum_tid,
-            'vid' => $node->vid,
+            'vid' => $node->getRevisionId(),
             'nid' => $node->id(),
           ))
           ->execute();
@@ -367,12 +367,12 @@ function forum_node_update(EntityInterface $node) {
     if (!empty($node->shadow)) {
       db_delete('forum')
         ->condition('nid', $node->id())
-        ->condition('vid', $node->vid)
+        ->condition('vid', $node->getRevisionId())
         ->execute();
       db_insert('forum')
         ->fields(array(
           'nid' => $node->id(),
-          'vid' => $node->vid,
+          'vid' => $node->getRevisionId(),
           'tid' => $node->forum_tid,
         ))
         ->execute();
@@ -389,7 +389,7 @@ function forum_node_insert(EntityInterface $node) {
       $nid = db_insert('forum')
         ->fields(array(
           'tid' => $node->forum_tid,
-          'vid' => $node->vid,
+          'vid' => $node->getRevisionId(),
           'nid' => $node->id(),
         ))
         ->execute();
@@ -418,7 +418,7 @@ function forum_node_load($nodes) {
   $node_vids = array();
   foreach ($nodes as $node) {
     if (_forum_node_check_node_type($node)) {
-      $node_vids[] = $node->vid;
+      $node_vids[] = $node->getRevisionId();
     }
   }
   if (!empty($node_vids)) {
@@ -501,18 +501,18 @@ function forum_comment_delete($comment) {
  * Implements hook_field_storage_pre_insert().
  */
 function forum_field_storage_pre_insert(EntityInterface $entity, &$skip_fields) {
-  if ($entity->entityType() == 'node' && $entity->status && _forum_node_check_node_type($entity)) {
+  if ($entity->entityType() == 'node' && $entity->isPublished() && _forum_node_check_node_type($entity)) {
     $query = db_insert('forum_index')->fields(array('nid', 'title', 'tid', 'sticky', 'created', 'comment_count', 'last_comment_timestamp'));
     foreach ($entity->getTranslationLanguages() as $langcode => $language) {
       $translation = $entity->getTranslation($langcode);
       $query->values(array(
         'nid' => $entity->id(),
-        'title' => $translation->title->value,
+        'title' => $translation->label(),
         'tid' => $translation->taxonomy_forums->target_id,
-        'sticky' => $entity->sticky,
-        'created' => $entity->created,
+        'sticky' => (int) $entity->isSticky(),
+        'created' => $entity->getCreatedTime(),
         'comment_count' => 0,
-        'last_comment_timestamp' => $entity->created,
+        'last_comment_timestamp' => $entity->getCreatedTime(),
       ));
     }
     $query->execute();
@@ -528,26 +528,27 @@ function forum_field_storage_pre_update(EntityInterface $entity, &$skip_fields)
   if ($entity->entityType() == 'node' && _forum_node_check_node_type($entity)) {
 
     // If the node is published, update the forum index.
-    if ($entity->status) {
+    if ($entity->isPublished()) {
 
       // We don't maintain data for old revisions, so clear all previous values
       // from the table. Since this hook runs once per field, per object, make
       // sure we only wipe values once.
-      if (!isset($first_call[$entity->nid])) {
-        $first_call[$entity->nid] = FALSE;
+      if (!isset($first_call[$entity->id()])) {
+        $first_call[$entity->id()] = FALSE;
         db_delete('forum_index')->condition('nid', $entity->id())->execute();
       }
       $query = db_insert('forum_index')->fields(array('nid', 'title', 'tid', 'sticky', 'created', 'comment_count', 'last_comment_timestamp'));
-      foreach ($entity->taxonomy_forums as $language) {
-        foreach ($language as $item) {
+      foreach ($entity->getTranslationLanguages() as $langcode => $language) {
+        $translation = $entity->getTranslation($langcode);
+        foreach ($translation->taxonomy_forums as $item) {
           $query->values(array(
-            'nid' => $entity->nid,
-            'title' => $entity->title,
-            'tid' => $item['target_id'],
-            'sticky' => $entity->sticky,
-            'created' => $entity->created,
+            'nid' => $entity->id(),
+            'title' => $translation->label(),
+            'tid' => $item->target_id,
+            'sticky' => (int) $entity->isSticky(),
+            'created' => $entity->getCreatedTime(),
             'comment_count' => 0,
-            'last_comment_timestamp' => $entity->created,
+            'last_comment_timestamp' => $entity->getCreatedTime(),
           ));
         }
       }
@@ -1109,7 +1110,7 @@ function template_preprocess_forum_topic_list(&$variables) {
         '#new_posts' => $topic->new,
         '#num_posts' => $topic->comment_count,
         '#comment_mode' => $topic->comment_mode,
-        '#sticky' => $topic->sticky,
+        '#sticky' => $topic->isSticky(),
         '#first_new' => $topic->first_new,
       );
       $variables['topics'][$id]->zebra = $row % 2 == 0 ? 'odd' : 'even';
@@ -1120,12 +1121,12 @@ function template_preprocess_forum_topic_list(&$variables) {
       // them is a shadow copy.
       if ($variables['tid'] != $topic->forum_tid) {
         $variables['topics'][$id]->moved = TRUE;
-        $variables['topics'][$id]->title = check_plain($topic->title);
+        $variables['topics'][$id]->title = check_plain($topic->getTitle());
         $variables['topics'][$id]->message = l(t('This topic has been moved'), "forum/$topic->forum_tid");
       }
       else {
         $variables['topics'][$id]->moved = FALSE;
-        $variables['topics'][$id]->title = l($topic->title, 'node/' . $topic->id());
+        $variables['topics'][$id]->title = l($topic->getTitle(), 'node/' . $topic->id());
         $variables['topics'][$id]->message = '';
       }
       $forum_submitted = array('#theme' => 'forum_submitted', '#topic' => $topic);
diff --git a/core/modules/forum/lib/Drupal/forum/Tests/ForumNodeAccessTest.php b/core/modules/forum/lib/Drupal/forum/Tests/ForumNodeAccessTest.php
index 1491ce2c0bd024c166582718007df0a8ee7dc706..dde4701e668564a51d162fa67a8be0245920ee16 100644
--- a/core/modules/forum/lib/Drupal/forum/Tests/ForumNodeAccessTest.php
+++ b/core/modules/forum/lib/Drupal/forum/Tests/ForumNodeAccessTest.php
@@ -82,16 +82,16 @@ function testForumNodeAccess() {
     $this->drupalGet('');
 
     // Ensure private node and public node are found.
-    $this->assertText($private_node->title, 'Private node found in block by $access_user');
-    $this->assertText($public_node->title, 'Public node found in block by $access_user');
+    $this->assertText($private_node->getTitle(), 'Private node found in block by $access_user');
+    $this->assertText($public_node->getTitle(), 'Public node found in block by $access_user');
 
     // Test for $no_access_user.
     $this->drupalLogin($no_access_user);
     $this->drupalGet('');
 
     // Ensure private node is not found but public is found.
-    $this->assertNoText($private_node->title, 'Private node not found in block by $no_access_user');
-    $this->assertText($public_node->title, 'Public node found in block by $no_access_user');
+    $this->assertNoText($private_node->getTitle(), 'Private node not found in block by $no_access_user');
+    $this->assertText($public_node->getTitle(), 'Public node found in block by $no_access_user');
   }
 
 }
diff --git a/core/modules/forum/lib/Drupal/forum/Tests/ForumTest.php b/core/modules/forum/lib/Drupal/forum/Tests/ForumTest.php
index d09baf5dd65316178cc60cbe28de0ed30d03c502..c6f25332a9d397f96ffdd5bbe32ee2f2804cb7cf 100644
--- a/core/modules/forum/lib/Drupal/forum/Tests/ForumTest.php
+++ b/core/modules/forum/lib/Drupal/forum/Tests/ForumTest.php
@@ -607,7 +607,7 @@ private function verifyForums($node_user, EntityInterface $node, $admin, $respon
       // Verify topic was moved to a different forum.
       $forum_tid = db_query("SELECT tid FROM {forum} WHERE nid = :nid AND vid = :vid", array(
         ':nid' => $node->id(),
-        ':vid' => $node->vid,
+        ':vid' => $node->getRevisionId(),
       ))->fetchField();
       $this->assertTrue($forum_tid == $this->root_forum['tid'], 'The forum topic is linked to a different forum');
 
diff --git a/core/modules/image/lib/Drupal/image/Tests/ImageFieldDisplayTest.php b/core/modules/image/lib/Drupal/image/Tests/ImageFieldDisplayTest.php
index 8ec672783542ead5174bcc13418e0b811f76b733..27e67efd3d72f6b7839a82deb27beea1908bd701 100644
--- a/core/modules/image/lib/Drupal/image/Tests/ImageFieldDisplayTest.php
+++ b/core/modules/image/lib/Drupal/image/Tests/ImageFieldDisplayTest.php
@@ -72,7 +72,7 @@ function _testImageFieldFormatters($scheme) {
       'type' => 'image',
       'settings' => array('image_link' => 'file'),
     );
-    $display = entity_get_display('node', $node->type, 'default');
+    $display = entity_get_display('node', $node->getType(), 'default');
     $display->setComponent($field_name, $display_options)
       ->save();
 
diff --git a/core/modules/locale/locale.module b/core/modules/locale/locale.module
index 01c9a4f38b2926bdcbfe910665e10ab4461df164..c4ff11f78ed436ac55a42b95c79bdc544cf76500 100644
--- a/core/modules/locale/locale.module
+++ b/core/modules/locale/locale.module
@@ -869,15 +869,15 @@ function locale_system_file_system_settings_submit(&$form, $form_state) {
  * Implements hook_preprocess_HOOK() for node.html.twig.
  */
 function locale_preprocess_node(&$variables) {
-  if ($variables['node']->langcode != Language::LANGCODE_NOT_SPECIFIED) {
+  if ($variables['node']->language()->id != Language::LANGCODE_NOT_SPECIFIED) {
     $language_interface = language(Language::TYPE_INTERFACE);
 
-    $node_language = language_load($variables['node']->langcode);
+    $node_language = $variables['node']->language();
     if ($node_language->id != $language_interface->id) {
       // If the node language was different from the page language, we should
       // add markup to identify the language. Otherwise the page language is
       // inherited.
-      $variables['attributes']['lang'] = $variables['node']->langcode;
+      $variables['attributes']['lang'] = $node_language->id;
       if ($node_language->direction != $language_interface->direction) {
         // If text direction is different form the page's text direction, add
         // direction information as well.
diff --git a/core/modules/menu/menu.module b/core/modules/menu/menu.module
index 5d833821cc0c5ef1d26b930f9a4f8cc6f0120726..a9a50a260e8f07267f2d3984f1d1c5ae64888aee 100644
--- a/core/modules/menu/menu.module
+++ b/core/modules/menu/menu.module
@@ -457,12 +457,12 @@ function menu_node_predelete(EntityInterface $node) {
 function menu_node_prepare_form(NodeInterface $node, $form_display, $operation, array &$form_state) {
   if (empty($node->menu)) {
     // Prepare the node for the edit form so that $node->menu always exists.
-    $menu_name = strtok(variable_get('menu_parent_' . $node->type, 'main:0'), ':');
+    $menu_name = strtok(variable_get('menu_parent_' . $node->getType(), 'main:0'), ':');
     $menu_link = FALSE;
     if ($node->id()) {
       $mlid = FALSE;
       // Give priority to the default menu
-      $type_menus = variable_get('menu_options_' . $node->type, array('main' => 'main'));
+      $type_menus = variable_get('menu_options_' . $node->getType(), array('main' => 'main'));
       if (in_array($menu_name, $type_menus)) {
         $query = Drupal::entityQuery('menu_link')
           ->condition('link_path', 'node/' . $node->id())
@@ -526,7 +526,7 @@ function menu_form_node_form_alter(&$form, $form_state) {
   // @todo This must be handled in a #process handler.
   $node = $form_state['controller']->getEntity();
   $link = $node->menu;
-  $type = $node->type;
+  $type = $node->getType();
   $options = menu_parent_options(menu_get_menus(), $link, $type);
   // If no possible parent menu items were found, there is nothing to display.
   if (empty($options)) {
diff --git a/core/modules/node/lib/Drupal/node/NodeAccessController.php b/core/modules/node/lib/Drupal/node/NodeAccessController.php
index 2556d7673769228b3ad35cf4c7a094eb0f8b2001..3e4d97b8aa96de7ab67efdbdd43b1809764e6b49 100644
--- a/core/modules/node/lib/Drupal/node/NodeAccessController.php
+++ b/core/modules/node/lib/Drupal/node/NodeAccessController.php
@@ -100,13 +100,8 @@ public function createAccess($entity_bundle = NULL, AccountInterface $account =
    */
   protected function checkAccess(EntityInterface $node, $operation, $langcode, AccountInterface $account) {
     // Fetch information from the node object if possible.
-    $status = isset($node->status) ? $node->status : NULL;
-    $uid = isset($node->uid) ? $node->uid : NULL;
-    // If it is a proper EntityNG object, use the proper methods.
-    if ($node instanceof EntityNG) {
-      $status = $node->getTranslation($langcode)->status->value;
-      $uid = $node->getTranslation($langcode)->uid->value;
-    }
+    $status = $node->getTranslation($langcode)->isPublished();
+    $uid = $node->getTranslation($langcode)->getAuthorId();
 
     // Check if authors can view their own unpublished nodes.
     if ($operation === 'view' && !$status && user_access('view own unpublished content', $account)) {
diff --git a/core/modules/node/lib/Drupal/node/NodeBCDecorator.php b/core/modules/node/lib/Drupal/node/NodeBCDecorator.php
index 77694fc8cb0ea7b553e77a01fce0c7ce8df8df8c..b65bc4e1503850d1d3ba7eafe7ae0c0f8932ea2f 100644
--- a/core/modules/node/lib/Drupal/node/NodeBCDecorator.php
+++ b/core/modules/node/lib/Drupal/node/NodeBCDecorator.php
@@ -14,11 +14,24 @@
  */
 class NodeBCDecorator extends EntityBCDecorator implements NodeInterface {
 
+  /**
+   * {@inheritdoc}
+   */
+  public function getType() {
+    return $this->decorated->getType();
+  }
+
   /**
    * {@inheritdoc}
    */
   public function setTitle($title) {
-    $this->decorated->setTitle($title);
+    return $this->decorated->setTitle($title);
+  }
+  /**
+   * {@inheritdoc}
+   */
+  public function getTitle() {
+    return $this->decorated->getTitle();
   }
 
   /**
diff --git a/core/modules/node/lib/Drupal/node/NodeFormController.php b/core/modules/node/lib/Drupal/node/NodeFormController.php
index ccc1dccc86009e6e29af84e0316f6fe44f22442c..045f1d97a8c0612cefdc9e09131b03768ca5c0ff 100644
--- a/core/modules/node/lib/Drupal/node/NodeFormController.php
+++ b/core/modules/node/lib/Drupal/node/NodeFormController.php
@@ -47,11 +47,11 @@ protected function prepareEntity() {
         }
       }
       global $user;
-      $node->uid = $user->id();
-      $node->created = REQUEST_TIME;
+      $node->setAuthorId($user->id());
+      $node->setCreatedTime(REQUEST_TIME);
     }
     else {
-      $node->date = format_date($node->created, 'custom', 'Y-m-d H:i:s O');
+      $node->date = format_date($node->getCreatedTime(), 'custom', 'Y-m-d H:i:s O');
       // Remove the log message from the original node entity.
       $node->log = NULL;
     }
@@ -82,7 +82,7 @@ public function form(array $form, array &$form_state) {
     // Override the default CSS class name, since the user-defined node type
     // name in 'TYPE-node-form' potentially clashes with third-party class
     // names.
-    $form['#attributes']['class'][0] = drupal_html_class('node-' . $node->type . '-form');
+    $form['#attributes']['class'][0] = drupal_html_class('node-' . $node->getType() . '-form');
 
     // Basic node information.
     // These elements are just values so they are not even sent to the client.
@@ -96,10 +96,10 @@ public function form(array $form, array &$form_state) {
     // Changed must be sent to the client, for later overwrite error checking.
     $form['changed'] = array(
       '#type' => 'hidden',
-      '#default_value' => isset($node->changed) ? $node->changed : NULL,
+      '#default_value' => $node->getChangedTime(),
     );
 
-    $node_type = node_type_load($node->type);
+    $node_type = node_type_load($node->getType());
     if ($node_type->has_title) {
       $form['title'] = array(
         '#type' => 'textfield',
@@ -111,11 +111,11 @@ public function form(array $form, array &$form_state) {
       );
     }
 
-    $language_configuration = module_invoke('language', 'get_default_configuration', 'node', $node->type);
+    $language_configuration = module_invoke('language', 'get_default_configuration', 'node', $node->getType());
     $form['langcode'] = array(
       '#title' => t('Language'),
       '#type' => 'language_select',
-      '#default_value' => $node->langcode,
+      '#default_value' => $node->getUntranslated()->language()->id,
       '#languages' => Language::STATE_ALL,
       '#access' => isset($language_configuration['language_show']) && $language_configuration['language_show'],
     );
@@ -199,7 +199,7 @@ public function form(array $form, array &$form_state) {
       '#type' => 'textfield',
       '#title' => t('Authored on'),
       '#maxlength' => 25,
-      '#description' => t('Format: %time. The date format is YYYY-MM-DD and %timezone is the time zone offset from UTC. Leave blank to use the time of form submission.', array('%time' => !empty($node->date) ? date_format(date_create($node->date), 'Y-m-d H:i:s O') : format_date($node->created, 'custom', 'Y-m-d H:i:s O'), '%timezone' => !empty($node->date) ? date_format(date_create($node->date), 'O') : format_date($node->created, 'custom', 'O'))),
+      '#description' => t('Format: %time. The date format is YYYY-MM-DD and %timezone is the time zone offset from UTC. Leave blank to use the time of form submission.', array('%time' => !empty($node->date) ? date_format(date_create($node->date), 'Y-m-d H:i:s O') : format_date($node->getCreatedTime(), 'custom', 'Y-m-d H:i:s O'), '%timezone' => !empty($node->date) ? date_format(date_create($node->date), 'O') : format_date($node->getCreatedTime(), 'custom', 'O'))),
       '#default_value' => !empty($node->date) ? $node->date : '',
     );
 
@@ -222,13 +222,13 @@ public function form(array $form, array &$form_state) {
     $form['options']['promote'] = array(
       '#type' => 'checkbox',
       '#title' => t('Promoted to front page'),
-      '#default_value' => $node->promote,
+      '#default_value' => $node->isPromoted(),
     );
 
     $form['options']['sticky'] = array(
       '#type' => 'checkbox',
       '#title' => t('Sticky at top of lists'),
-      '#default_value' => $node->sticky,
+      '#default_value' => $node->isSticky(),
     );
 
     // This form uses a button-level #submit handler for the form's main submit
@@ -271,7 +271,7 @@ protected function actions(array $form, array &$form_state) {
         $element['publish']['#value'] = t('Save and publish');
       }
       else {
-        $element['publish']['#value'] = $node->status ? t('Save and keep published') : t('Save and publish');
+        $element['publish']['#value'] = $node->isPublished() ? t('Save and keep published') : t('Save and publish');
       }
       $element['publish']['#weight'] = 0;
       array_unshift($element['publish']['#submit'], array($this, 'publish'));
@@ -283,13 +283,13 @@ protected function actions(array $form, array &$form_state) {
         $element['unpublish']['#value'] = t('Save as unpublished');
       }
       else {
-        $element['unpublish']['#value'] = !$node->status ? t('Save and keep unpublished') : t('Save and unpublish');
+        $element['unpublish']['#value'] = !$node->isPublished() ? t('Save and keep unpublished') : t('Save and unpublish');
       }
       $element['unpublish']['#weight'] = 10;
       array_unshift($element['unpublish']['#submit'], array($this, 'unpublish'));
 
       // If already published, the 'publish' button is primary.
-      if ($node->status) {
+      if ($node->isPublished()) {
         unset($element['unpublish']['#button_type']);
       }
       // Otherwise, the 'unpublish' button is primary and should come first.
@@ -327,7 +327,7 @@ protected function actions(array $form, array &$form_state) {
   public function validate(array $form, array &$form_state) {
     $node = $this->buildEntity($form, $form_state);
 
-    if ($node->id() && (node_last_changed($node->id(), $this->getFormLangcode($form_state)) > $node->changed)) {
+    if ($node->id() && (node_last_changed($node->id(), $this->getFormLangcode($form_state)) > $node->getChangedTime())) {
       form_set_error('changed', t('The content on this page has either been modified by another user, or you have already submitted modifications using this form. As a result, your changes cannot be saved.'));
     }
 
@@ -411,7 +411,7 @@ public function preview(array $form, array &$form_state) {
    */
   public function publish(array $form, array &$form_state) {
     $node = $this->entity;
-    $node->status = 1;
+    $node->setPublished(TRUE);
     return $node;
   }
 
@@ -425,7 +425,7 @@ public function publish(array $form, array &$form_state) {
    */
   public function unpublish(array $form, array &$form_state) {
     $node = $this->entity;
-    $node->status = 0;
+    $node->setPublished(FALSE);
     return $node;
   }
 
@@ -437,7 +437,7 @@ public function save(array $form, array &$form_state) {
     $insert = $node->isNew();
     $node->save();
     $node_link = l(t('view'), 'node/' . $node->id());
-    $watchdog_args = array('@type' => $node->type, '%title' => $node->label());
+    $watchdog_args = array('@type' => $node->getType(), '%title' => $node->label());
     $t_args = array('@type' => node_get_type_label($node), '%title' => $node->label());
 
     if ($insert) {
diff --git a/core/modules/node/lib/Drupal/node/NodeGrantDatabaseStorage.php b/core/modules/node/lib/Drupal/node/NodeGrantDatabaseStorage.php
index 9688390dd200e86829e07a1a5bf1400ab885937e..e7da48c9ff0d5682afd4a181708992c00c9bb601 100644
--- a/core/modules/node/lib/Drupal/node/NodeGrantDatabaseStorage.php
+++ b/core/modules/node/lib/Drupal/node/NodeGrantDatabaseStorage.php
@@ -71,7 +71,7 @@ public function access(EntityInterface $node, $operation, $langcode, AccountInte
       ->condition('langcode', $langcode);
     // If the node is published, also take the default grant into account. The
     // default is saved with a node ID of 0.
-    $status = $node instanceof EntityNG ? $node->status : $node->get('status', $langcode)->value;
+    $status = $node->isPublished();
     if ($status) {
       $nids = $query->orConditionGroup()
         ->condition($nids)
diff --git a/core/modules/node/lib/Drupal/node/NodeInterface.php b/core/modules/node/lib/Drupal/node/NodeInterface.php
index 61e60a5f33817a8f99c7232eb09a2dc4c9985ab8..a9acd3470f48e0a237beaa411867783666b20ad4 100644
--- a/core/modules/node/lib/Drupal/node/NodeInterface.php
+++ b/core/modules/node/lib/Drupal/node/NodeInterface.php
@@ -15,6 +15,23 @@
  */
 interface NodeInterface extends ContentEntityInterface {
 
+  /**
+   * Returns the node type.
+   *
+   * @return string
+   *   The node type.
+   */
+  public function getType();
+
+  /**
+   *
+   * Returns the node title.
+   *
+   * @return string
+   *   Title of the node.
+   */
+  public function getTitle();
+
   /**
    * Sets the node title.
    *
diff --git a/core/modules/node/lib/Drupal/node/NodeRenderController.php b/core/modules/node/lib/Drupal/node/NodeRenderController.php
index 1b234f738e475c4a1a71939195f98a31da73e776..c5712923eb04c29b839e0732048b1fc19060942d 100644
--- a/core/modules/node/lib/Drupal/node/NodeRenderController.php
+++ b/core/modules/node/lib/Drupal/node/NodeRenderController.php
@@ -49,7 +49,7 @@ public function buildContent(array $entities, array $displays, $view_mode, $lang
           'title' => t('Read more<span class="visually-hidden"> about @title</span>', array(
             '@title' => $node_title_stripped,
           )),
-          'href' => 'node/' . $entity->nid,
+          'href' => 'node/' . $entity->id(),
           'html' => TRUE,
           'attributes' => array(
             'rel' => 'tag',
diff --git a/core/modules/node/lib/Drupal/node/NodeTranslationController.php b/core/modules/node/lib/Drupal/node/NodeTranslationController.php
index 4df39461f3b377bb3c17f598d952a1bd426539ed..9436996841ea0e54e8a272f64736380a9a4008c8 100644
--- a/core/modules/node/lib/Drupal/node/NodeTranslationController.php
+++ b/core/modules/node/lib/Drupal/node/NodeTranslationController.php
@@ -54,7 +54,7 @@ public function entityFormEntityBuild($entity_type, EntityInterface $entity, arr
     if (isset($form_state['values']['content_translation'])) {
       $form_controller = content_translation_form_controller($form_state);
       $translation = &$form_state['values']['content_translation'];
-      $translation['status'] = $form_controller->getEntity()->status;
+      $translation['status'] = $form_controller->getEntity()->isPublished();
       $translation['name'] = $form_state['values']['name'];
       $translation['created'] = $form_state['values']['date'];
     }
diff --git a/core/modules/node/lib/Drupal/node/Plugin/Action/DemoteNode.php b/core/modules/node/lib/Drupal/node/Plugin/Action/DemoteNode.php
index 7676a765790fcb4f5ddb3b1549532de3e394f1c6..8adbdb1c5f81f7469ee60038c6120469302d062c 100644
--- a/core/modules/node/lib/Drupal/node/Plugin/Action/DemoteNode.php
+++ b/core/modules/node/lib/Drupal/node/Plugin/Action/DemoteNode.php
@@ -26,7 +26,7 @@ class DemoteNode extends ActionBase {
    * {@inheritdoc}
    */
   public function execute($entity = NULL) {
-    $entity->promote = NODE_NOT_PROMOTED;
+    $entity->setPromoted(FALSE);
     $entity->save();
   }
 
diff --git a/core/modules/node/lib/Drupal/node/Plugin/Action/PromoteNode.php b/core/modules/node/lib/Drupal/node/Plugin/Action/PromoteNode.php
index 56f86584c0fb44859483b03ed2df66b3b5a1fa15..0b87b382bcc488dfcb270411687e2c2fdadcb314 100644
--- a/core/modules/node/lib/Drupal/node/Plugin/Action/PromoteNode.php
+++ b/core/modules/node/lib/Drupal/node/Plugin/Action/PromoteNode.php
@@ -26,8 +26,8 @@ class PromoteNode extends ActionBase {
    * {@inheritdoc}
    */
   public function execute($entity = NULL) {
-    $entity->status = NODE_PUBLISHED;
-    $entity->promote = NODE_PROMOTED;
+    $entity->setPublished(TRUE);
+    $entity->setPromoted(TRUE);
     $entity->save();
   }
 
diff --git a/core/modules/node/lib/Drupal/node/Plugin/Action/UnpublishByKeywordNode.php b/core/modules/node/lib/Drupal/node/Plugin/Action/UnpublishByKeywordNode.php
index 2ad65f815af12bbe6c24e90c78a635b92ea48752..a52580295539e24793f3c2bcd6c42a2e5b8c266d 100644
--- a/core/modules/node/lib/Drupal/node/Plugin/Action/UnpublishByKeywordNode.php
+++ b/core/modules/node/lib/Drupal/node/Plugin/Action/UnpublishByKeywordNode.php
@@ -29,7 +29,7 @@ public function execute($node = NULL) {
     foreach ($this->configuration['keywords'] as $keyword) {
       $elements = node_view(clone $node);
       if (strpos(drupal_render($elements), $keyword) !== FALSE || strpos($node->label(), $keyword) !== FALSE) {
-        $node->status = NODE_NOT_PUBLISHED;
+        $node->setPublished(FALSE);
         $node->save();
         break;
       }
diff --git a/core/modules/node/lib/Drupal/node/Plugin/Condition/NodeType.php b/core/modules/node/lib/Drupal/node/Plugin/Condition/NodeType.php
index 4f30bb78c25136aa6ca2349d5804d0a72f8fc363..bf71eb28c191366781760309a5d52ae0c7e3911c 100644
--- a/core/modules/node/lib/Drupal/node/Plugin/Condition/NodeType.php
+++ b/core/modules/node/lib/Drupal/node/Plugin/Condition/NodeType.php
@@ -85,7 +85,7 @@ public function summary() {
    */
   public function evaluate() {
     $node = $this->getContextValue('node');
-    return in_array($node->type, $this->configuration['bundles']);
+    return in_array($node->getType(), $this->configuration['bundles']);
   }
 
 }
diff --git a/core/modules/node/lib/Drupal/node/Plugin/Core/Entity/Node.php b/core/modules/node/lib/Drupal/node/Plugin/Core/Entity/Node.php
index 54ae77febe46dc8822abbc413088cc0f9b79f933..a79c796d7a2885a2fd085fa6ee07d9f5f2b1caff 100644
--- a/core/modules/node/lib/Drupal/node/Plugin/Core/Entity/Node.php
+++ b/core/modules/node/lib/Drupal/node/Plugin/Core/Entity/Node.php
@@ -142,6 +142,20 @@ public static function preDelete(EntityStorageControllerInterface $storage_contr
     }
   }
 
+  /**
+   * {@inheritdoc}
+   */
+  public function getType() {
+    return $this->bundle();
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function getTitle() {
+    return $this->get('title')->value;
+  }
+
   /**
    * {@inheritdoc}
    */
@@ -184,7 +198,7 @@ public function isPromoted() {
    * {@inheritdoc}
    */
   public function setPromoted($promoted) {
-    $this->set('promoted', $promoted ? NODE_PROMOTED : NODE_NOT_PROMOTED);
+    $this->set('promote', $promoted ? NODE_PROMOTED : NODE_NOT_PROMOTED);
     return $this;
   }
 
@@ -221,12 +235,7 @@ public function setPublished($published) {
    * {@inheritdoc}
    */
   public function getAuthor() {
-    $entity = $this->get('uid')->entity;
-    // If no user is given, default to the anonymous user.
-    if (!$entity) {
-      return user_load(0);
-    }
-    return $entity;
+    return $this->get('uid')->entity;
   }
 
   /**
diff --git a/core/modules/node/lib/Drupal/node/Plugin/views/argument_validator/Node.php b/core/modules/node/lib/Drupal/node/Plugin/views/argument_validator/Node.php
index 36f3ab02e23f8689a7fdfb86b84eff41df7633ac..ac76687ef2a3fe9eaeb74345ab5f01ef5d72abb1 100644
--- a/core/modules/node/lib/Drupal/node/Plugin/views/argument_validator/Node.php
+++ b/core/modules/node/lib/Drupal/node/Plugin/views/argument_validator/Node.php
@@ -106,7 +106,7 @@ public function validateArgument($argument) {
           return TRUE;
         }
 
-        return isset($types[$node->type]);
+        return isset($types[$node->getType()]);
 
       case 'nids':
         $nids = new stdClass();
@@ -121,7 +121,7 @@ public function validateArgument($argument) {
 
         $nodes = node_load_multiple($nids->value);
         foreach ($nodes as $node) {
-          if ($types && empty($types[$node->type])) {
+          if ($types && empty($types[$node->getType()])) {
             return FALSE;
           }
 
diff --git a/core/modules/node/lib/Drupal/node/Plugin/views/field/LinkEdit.php b/core/modules/node/lib/Drupal/node/Plugin/views/field/LinkEdit.php
index 63c07fba8a02af30796fee9dedbc12be59f425d2..fdf933e087049c9d54f4b6df27249aa10c1fe295 100644
--- a/core/modules/node/lib/Drupal/node/Plugin/views/field/LinkEdit.php
+++ b/core/modules/node/lib/Drupal/node/Plugin/views/field/LinkEdit.php
@@ -30,7 +30,7 @@ protected function renderLink($node, ResultRow $values) {
     }
 
     $this->options['alter']['make_link'] = TRUE;
-    $this->options['alter']['path'] = "node/$node->nid/edit";
+    $this->options['alter']['path'] = "node/" . $node->id() . "/edit";
     $this->options['alter']['query'] = drupal_get_destination();
 
     $text = !empty($this->options['text']) ? $this->options['text'] : t('edit');
diff --git a/core/modules/node/lib/Drupal/node/Plugin/views/field/RevisionLink.php b/core/modules/node/lib/Drupal/node/Plugin/views/field/RevisionLink.php
index 6b43b8105f749c5201f95ff8e3e1051e8f3715c5..8b3d3d77241381615c811575e4f67ab87787f991 100644
--- a/core/modules/node/lib/Drupal/node/Plugin/views/field/RevisionLink.php
+++ b/core/modules/node/lib/Drupal/node/Plugin/views/field/RevisionLink.php
@@ -70,7 +70,7 @@ function get_revision_entity($values, $op) {
     $vid = $this->getValue($values, 'node_vid');
     $node = $this->getEntity($values);
     // Unpublished nodes ignore access control.
-    $node->status = 1;
+    $node->setPublished(TRUE);
     // Ensure user has access to perform the operation on this node.
     if (!node_access($op, $node)) {
       return array($node, NULL);
diff --git a/core/modules/node/lib/Drupal/node/Plugin/views/row/Rss.php b/core/modules/node/lib/Drupal/node/Plugin/views/row/Rss.php
index 89c7940f6c50db198cc3cfabfa19e6fa50ca0345..9d73565c8f31e8529cef26f1deb34b77ddf28e88 100644
--- a/core/modules/node/lib/Drupal/node/Plugin/views/row/Rss.php
+++ b/core/modules/node/lib/Drupal/node/Plugin/views/row/Rss.php
@@ -117,7 +117,7 @@ public function render($row) {
     $node->rss_elements = array(
       array(
         'key' => 'pubDate',
-        'value' => gmdate('r', $node->created),
+        'value' => gmdate('r', $node->getCreatedTime()),
       ),
       array(
         'key' => 'dc:creator',
diff --git a/core/modules/node/lib/Drupal/node/Tests/NodeAccessLanguageTest.php b/core/modules/node/lib/Drupal/node/Tests/NodeAccessLanguageTest.php
index 54ba0857ad1c697f10fe1f85f49ca16b72af079f..6facbdb93092442fdbc38b061d9157b03fa94dc4 100644
--- a/core/modules/node/lib/Drupal/node/Tests/NodeAccessLanguageTest.php
+++ b/core/modules/node/lib/Drupal/node/Tests/NodeAccessLanguageTest.php
@@ -47,6 +47,10 @@ function setUp() {
       'id' => 'ca',
     ));
     language_save($language);
+    $language = new Language(array(
+      'id' => 'hr',
+    ));
+    language_save($language);
   }
 
   /**
@@ -61,7 +65,7 @@ function testNodeAccess() {
     // Creating a public node with langcode Hungarian, will be saved as the
     // fallback in node access table.
     $node_public = $this->drupalCreateNode(array('body' => array(array()), 'langcode' => 'hu', 'private' => FALSE));
-    $this->assertTrue($node_public->langcode == 'hu', 'Node created as Hungarian.');
+    $this->assertTrue($node_public->language()->id == 'hu', 'Node created as Hungarian.');
 
     // Tests the default access is provided for the public Hungarian node.
     $this->assertNodeAccess($expected_node_access, $node_public, $web_user);
@@ -78,7 +82,7 @@ function testNodeAccess() {
     // Creating a public node with no special langcode, like when no language
     // module enabled.
     $node_public_no_language = $this->drupalCreateNode(array('private' => FALSE));
-    $this->assertTrue($node_public_no_language->langcode == Language::LANGCODE_NOT_SPECIFIED, 'Node created with not specified language.');
+    $this->assertTrue($node_public_no_language->language()->id == Language::LANGCODE_NOT_SPECIFIED, 'Node created with not specified language.');
 
     // Tests that access is granted if requested with no language.
     $this->assertNodeAccess($expected_node_access, $node_public_no_language, $web_user);
@@ -113,14 +117,14 @@ function testNodeAccessPrivate() {
     $web_user = $this->drupalCreateUser(array('access content'));
 
     $node = $this->drupalCreateNode(array('body' => array(array()), 'langcode' => 'hu'));
-    $this->assertTrue($node->langcode == 'hu', 'Node created as Hungarian.');
+    $this->assertTrue($node->language()->id == 'hu', 'Node created as Hungarian.');
     $expected_node_access = array('view' => TRUE, 'update' => FALSE, 'delete' => FALSE);
     $expected_node_access_no_access = array('view' => FALSE, 'update' => FALSE, 'delete' => FALSE);
 
     // Creating a private node with langcode Hungarian, will be saved as the
     // fallback in node access table.
     $node_public = $this->drupalCreateNode(array('body' => array(array()), 'langcode' => 'hu', 'private' => TRUE));
-    $this->assertTrue($node_public->langcode == 'hu', 'Node created as Hungarian.');
+    $this->assertTrue($node_public->language()->id == 'hu', 'Node created as Hungarian.');
 
     // Tests the default access is not provided for the private Hungarian node.
     $this->assertNodeAccess($expected_node_access_no_access, $node_public, $web_user);
@@ -137,7 +141,7 @@ function testNodeAccessPrivate() {
     // Creating a private node with no special langcode, like when no language
     // module enabled.
     $node_private_no_language = $this->drupalCreateNode(array('private' => TRUE));
-    $this->assertTrue($node_private_no_language->langcode == Language::LANGCODE_NOT_SPECIFIED, 'Node created with not specified language.');
+    $this->assertTrue($node_private_no_language->language()->id == Language::LANGCODE_NOT_SPECIFIED, 'Node created with not specified language.');
 
     // Tests that access is not granted if requested with no language.
     $this->assertNodeAccess($expected_node_access_no_access, $node_private_no_language, $web_user);
@@ -179,17 +183,17 @@ function testNodeAccessQueryTag() {
     // Creating a private node with langcode Hungarian, will be saved as
     // the fallback in node access table.
     $node_private = $this->drupalCreateNode(array('body' => array(array()), 'langcode' => 'hu', 'private' => TRUE));
-    $this->assertTrue($node_private->langcode == 'hu', 'Node created as Hungarian.');
+    $this->assertTrue($node_private->language()->id == 'hu', 'Node created as Hungarian.');
 
     // Creating a public node with langcode Hungarian, will be saved as
     // the fallback in node access table.
     $node_public = $this->drupalCreateNode(array('body' => array(array()), 'langcode' => 'hu', 'private' => FALSE));
-    $this->assertTrue($node_public->langcode == 'hu', 'Node created as Hungarian.');
+    $this->assertTrue($node_public->language()->id == 'hu', 'Node created as Hungarian.');
 
     // Creating a public node with no special langcode, like when no language
     // module enabled.
     $node_no_language = $this->drupalCreateNode(array('private' => FALSE));
-    $this->assertTrue($node_no_language->langcode == Language::LANGCODE_NOT_SPECIFIED, 'Node created with not specified language.');
+    $this->assertTrue($node_no_language->language()->id == Language::LANGCODE_NOT_SPECIFIED, 'Node created with not specified language.');
 
     // Query the nodes table as the web user with the node access tag and no
     // specific langcode.
diff --git a/core/modules/node/lib/Drupal/node/Tests/NodeBlockFunctionalTest.php b/core/modules/node/lib/Drupal/node/Tests/NodeBlockFunctionalTest.php
index f652895e7999aa269f69d745edd834539a2b9910..a63bcf8e2c6068c3c07df146e8f6c1642431920a 100644
--- a/core/modules/node/lib/Drupal/node/Tests/NodeBlockFunctionalTest.php
+++ b/core/modules/node/lib/Drupal/node/Tests/NodeBlockFunctionalTest.php
@@ -76,13 +76,13 @@ public function testRecentNodeBlock() {
     // Change the changed time for node so that we can test ordering.
     db_update('node_field_data')
       ->fields(array(
-        'changed' => $node1->changed + 100,
+        'changed' => $node1->getChangedTime() + 100,
       ))
       ->condition('nid', $node2->id())
       ->execute();
     db_update('node_field_data')
       ->fields(array(
-        'changed' => $node1->changed + 200,
+        'changed' => $node1->getChangedTime() + 200,
       ))
       ->condition('nid', $node3->id())
       ->execute();
diff --git a/core/modules/node/lib/Drupal/node/Tests/NodeFormButtonsTest.php b/core/modules/node/lib/Drupal/node/Tests/NodeFormButtonsTest.php
index 2a8f025bb1d1674b9906cb5bc9e0438ebe78728a..6a0902f893580055090e3695f7ff68fb5cb8ab74 100644
--- a/core/modules/node/lib/Drupal/node/Tests/NodeFormButtonsTest.php
+++ b/core/modules/node/lib/Drupal/node/Tests/NodeFormButtonsTest.php
@@ -52,7 +52,7 @@ function testNodeFormButtons() {
 
     // Get the node.
     $node_1 = node_load(1);
-    $this->assertEqual(1, $node_1->status, 'Node is published');
+    $this->assertTrue($node_1->isPublished(), 'Node is published');
 
     // Verify the buttons on a node edit form.
     $this->drupalGet('node/' . $node_1->id() . '/edit');
@@ -62,13 +62,13 @@ function testNodeFormButtons() {
     // 'Save and keep published'.
     $this->drupalPost(NULL, $edit, t('Save and keep published'));
     $node = node_load(1, TRUE);
-    $this->assertEqual(1, $node_1->status, 'Node is published');
+    $this->assertTrue($node_1->isPublished(), 'Node is published');
 
     // Save the node and verify it's unpublished after clicking
     // 'Save and unpublish'.
     $this->drupalPost('node/' . $node_1->id() . '/edit', $edit, t('Save and unpublish'));
     $node_1 = node_load(1, TRUE);
-    $this->assertEqual(0, $node_1->status, 'Node is unpublished');
+    $this->assertFalse($node_1->isPublished(), 'Node is unpublished');
 
     // Verify the buttons on an unpublished node edit screen.
     $this->drupalGet('node/' . $node_1->id() . '/edit');
@@ -86,7 +86,7 @@ function testNodeFormButtons() {
     $edit = array('title' => $this->randomString());
     $this->drupalPost('node/add/article', $edit, t('Save'));
     $node_2 = node_load(2);
-    $this->assertEqual(1, $node_2->status, 'Node is published');
+    $this->assertTrue($node_2->isPublished(), 'Node is published');
 
     // Login as an administrator and unpublish the node that just
     // was created by the normal user.
@@ -94,7 +94,7 @@ function testNodeFormButtons() {
     $this->drupalLogin($this->admin_user);
     $this->drupalPost('node/' . $node_2->id() . '/edit', array(), t('Save and unpublish'));
     $node_2 = node_load(2, TRUE);
-    $this->assertEqual(0, $node_2->status, 'Node is unpublished');
+    $this->assertFalse($node_2->isPublished(), 'Node is unpublished');
 
     // Login again as the normal user, save the node and verify
     // it's still unpublished.
@@ -102,7 +102,7 @@ function testNodeFormButtons() {
     $this->drupalLogin($this->web_user);
     $this->drupalPost('node/' . $node_2->id() . '/edit', array(), t('Save'));
     $node_2 = node_load(2, TRUE);
-    $this->assertEqual(0, $node_2->status, 'Node is still unpublished');
+    $this->assertFalse($node_2->isPublished(), 'Node is still unpublished');
     $this->drupalLogout();
 
     // Set article content type default to unpublished. This will change the
@@ -122,7 +122,7 @@ function testNodeFormButtons() {
     $edit = array('title' => $this->randomString());
     $this->drupalPost('node/add/article', $edit, t('Save'));
     $node_3 = node_load(3);
-    $this->assertEqual(0, $node_3->status, 'Node is unpublished');
+    $this->assertFalse($node_3->isPublished(), 'Node is unpublished');
   }
 
   /**
diff --git a/core/modules/node/lib/Drupal/node/Tests/NodeRevisionsAllTestCase.php b/core/modules/node/lib/Drupal/node/Tests/NodeRevisionsAllTestCase.php
index 3906c94c9ef9b2ea2263d01bc5f9f7b55a6686ad..d6ddc3b15072e2ccd4afda0828bd265abf62ae21 100644
--- a/core/modules/node/lib/Drupal/node/Tests/NodeRevisionsAllTestCase.php
+++ b/core/modules/node/lib/Drupal/node/Tests/NodeRevisionsAllTestCase.php
@@ -97,11 +97,11 @@ function testRevisions() {
     $this->drupalLogin($content_admin);
 
     // Confirm the correct revision text appears on "view revisions" page.
-    $this->drupalGet("node/$node->nid/revisions/$node->vid/view");
+    $this->drupalGet("node/" . $node->id() . "/revisions/" . $node->getRevisionId() . "/view");
     $this->assertText($node->body[Language::LANGCODE_NOT_SPECIFIED][0]['value'], 'Correct text displays for version.');
 
     // Confirm the correct log message appears on "revisions overview" page.
-    $this->drupalGet("node/$node->nid/revisions");
+    $this->drupalGet("node/" . $node->id() . "/revisions");
     foreach ($logs as $log) {
       $this->assertText($log, 'Log message found.');
     }
@@ -110,47 +110,47 @@ function testRevisions() {
     $this->assertTrue($node->isDefaultRevision(), 'Third node revision is the current one.');
 
     // Confirm that revisions revert properly.
-    $this->drupalPost("node/$node->nid/revisions/{$nodes[1]->vid}/revert", array(), t('Revert'));
+    $this->drupalPost("node/" . $node->id() . "/revisions/" . $nodes[1]->getRevisionId() . "/revert", array(), t('Revert'));
     $this->assertRaw(t('@type %title has been reverted back to the revision from %revision-date.',
       array(
         '@type' => 'Basic page',
-        '%title' => $nodes[1]->title,
-        '%revision-date' => format_date($nodes[1]->revision_timestamp)
+        '%title' => $nodes[1]->getTitle(),
+        '%revision-date' => format_date($nodes[1]->getRevisionCreationTime())
       )),
       'Revision reverted.');
     $reverted_node = node_load($node->id(), TRUE);
     $this->assertTrue(($nodes[1]->body[Language::LANGCODE_NOT_SPECIFIED][0]['value'] == $reverted_node->body[Language::LANGCODE_NOT_SPECIFIED][0]['value']), 'Node reverted correctly.');
 
     // Confirm that this is not the current version.
-    $node = node_revision_load($node->vid);
+    $node = node_revision_load($node->getRevisionId());
     $this->assertFalse($node->isDefaultRevision(), 'Third node revision is not the current one.');
 
     // Confirm revisions delete properly.
-    $this->drupalPost("node/$node->nid/revisions/{$nodes[1]->vid}/delete", array(), t('Delete'));
+    $this->drupalPost("node/" . $node->id() . "/revisions/" . $nodes[1]->getRevisionId() . "/delete", array(), t('Delete'));
     $this->assertRaw(t('Revision from %revision-date of @type %title has been deleted.',
       array(
-        '%revision-date' => format_date($nodes[1]->revision_timestamp),
+        '%revision-date' => format_date($nodes[1]->getRevisionCreationTime()),
         '@type' => 'Basic page',
-        '%title' => $nodes[1]->title,
+        '%title' => $nodes[1]->getTitle(),
       )),
       'Revision deleted.');
     $this->assertTrue(db_query('SELECT COUNT(vid) FROM {node_field_revision} WHERE nid = :nid and vid = :vid',
-      array(':nid' => $node->id(), ':vid' => $nodes[1]->vid))->fetchField() == 0,
+      array(':nid' => $node->id(), ':vid' => $nodes[1]->getRevisionId()))->fetchField() == 0,
       'Revision not found.');
 
     // Set the revision timestamp to an older date to make sure that the
     // confirmation message correctly displays the stored revision date.
     $old_revision_date = REQUEST_TIME - 86400;
     db_update('node_field_revision')
-      ->condition('vid', $nodes[2]->vid)
+      ->condition('vid', $nodes[2]->getRevisionId())
       ->fields(array(
         'revision_timestamp' => $old_revision_date,
       ))
       ->execute();
-    $this->drupalPost("node/$node->nid/revisions/{$nodes[2]->vid}/revert", array(), t('Revert'));
+    $this->drupalPost("node/" . $node->id() . "/revisions/" . $nodes[2]->getRevisionId() . "/revert", array(), t('Revert'));
     $this->assertRaw(t('@type %title has been reverted back to the revision from %revision-date.', array(
       '@type' => 'Basic page',
-      '%title' => $nodes[2]->title,
+      '%title' => $nodes[2]->getTitle(),
       '%revision-date' => format_date($old_revision_date),
     )));
   }
diff --git a/core/modules/node/lib/Drupal/node/Tests/NodeRevisionsTest.php b/core/modules/node/lib/Drupal/node/Tests/NodeRevisionsTest.php
index 62ebcb1f40af560c71b3d68f16ceb20a059d039c..1580f8629ec8f4ac91fec7bd7fdb94b9bb02853d 100644
--- a/core/modules/node/lib/Drupal/node/Tests/NodeRevisionsTest.php
+++ b/core/modules/node/lib/Drupal/node/Tests/NodeRevisionsTest.php
@@ -85,11 +85,11 @@ function testRevisions() {
     $node = $nodes[3];
 
     // Confirm the correct revision text appears on "view revisions" page.
-    $this->drupalGet("node/$node->nid/revisions/$node->vid/view");
+    $this->drupalGet("node/" . $node->id() . "/revisions/" . $node->getRevisionId() . "/view");
     $this->assertText($node->body[Language::LANGCODE_NOT_SPECIFIED][0]['value'], 'Correct text displays for version.');
 
     // Confirm the correct log message appears on "revisions overview" page.
-    $this->drupalGet("node/$node->nid/revisions");
+    $this->drupalGet("node/" . $node->id() . "/revisions");
     foreach ($logs as $log) {
       $this->assertText($log, 'Log message found.');
     }
@@ -98,34 +98,34 @@ function testRevisions() {
     $this->assertTrue($node->isDefaultRevision(), 'Third node revision is the default one.');
 
     // Confirm that revisions revert properly.
-    $this->drupalPost("node/$node->nid/revisions/{$nodes[1]->vid}/revert", array(), t('Revert'));
+    $this->drupalPost("node/" . $node->id() . "/revisions/" . $nodes[1]->getRevisionid() . "/revert", array(), t('Revert'));
     $this->assertRaw(t('@type %title has been reverted back to the revision from %revision-date.',
                         array('@type' => 'Basic page', '%title' => $nodes[1]->label(),
-                              '%revision-date' => format_date($nodes[1]->revision_timestamp))), 'Revision reverted.');
+                              '%revision-date' => format_date($nodes[1]->getRevisionCreationTime()))), 'Revision reverted.');
     $reverted_node = node_load($node->id(), TRUE);
     $this->assertTrue(($nodes[1]->body[Language::LANGCODE_NOT_SPECIFIED][0]['value'] == $reverted_node->body[Language::LANGCODE_NOT_SPECIFIED][0]['value']), 'Node reverted correctly.');
 
     // Confirm that this is not the default version.
-    $node = node_revision_load($node->vid);
+    $node = node_revision_load($node->getRevisionId());
     $this->assertFalse($node->isDefaultRevision(), 'Third node revision is not the default one.');
 
     // Confirm revisions delete properly.
-    $this->drupalPost("node/$node->nid/revisions/{$nodes[1]->vid}/delete", array(), t('Delete'));
+    $this->drupalPost("node/" . $node->id() . "/revisions/" . $nodes[1]->getRevisionId() . "/delete", array(), t('Delete'));
     $this->assertRaw(t('Revision from %revision-date of @type %title has been deleted.',
-                        array('%revision-date' => format_date($nodes[1]->revision_timestamp),
+                        array('%revision-date' => format_date($nodes[1]->getRevisionCreationTime()),
                               '@type' => 'Basic page', '%title' => $nodes[1]->label())), 'Revision deleted.');
-    $this->assertTrue(db_query('SELECT COUNT(vid) FROM {node_field_revision} WHERE nid = :nid and vid = :vid', array(':nid' => $node->id(), ':vid' => $nodes[1]->vid))->fetchField() == 0, 'Revision not found.');
+    $this->assertTrue(db_query('SELECT COUNT(vid) FROM {node_field_revision} WHERE nid = :nid and vid = :vid', array(':nid' => $node->id(), ':vid' => $nodes[1]->getRevisionId()))->fetchField() == 0, 'Revision not found.');
 
     // Set the revision timestamp to an older date to make sure that the
     // confirmation message correctly displays the stored revision date.
     $old_revision_date = REQUEST_TIME - 86400;
     db_update('node_field_revision')
-      ->condition('vid', $nodes[2]->vid)
+      ->condition('vid', $nodes[2]->getRevisionId())
       ->fields(array(
         'revision_timestamp' => $old_revision_date,
       ))
       ->execute();
-    $this->drupalPost("node/$node->nid/revisions/{$nodes[2]->vid}/revert", array(), t('Revert'));
+    $this->drupalPost("node/" . $node->id() . "/revisions/" . $nodes[2]->getRevisionId() . "/revert", array(), t('Revert'));
     $this->assertRaw(t('@type %title has been reverted back to the revision from %revision-date.', array(
       '@type' => 'Basic page',
       '%title' => $nodes[2]->label(),
@@ -146,7 +146,7 @@ function testRevisions() {
     $this->assertNoText($new_body, 'Revision body text is not present on default version of node.');
 
     // Verify that the new body text is present on the revision.
-    $this->drupalGet("node/$node->nid/revisions/" . $new_node_revision->vid . "/view");
+    $this->drupalGet("node/" . $node->id() . "/revisions/" . $new_node_revision->getRevisionId() . "/view");
     $this->assertText($new_body, 'Revision body text is present when loading specific revision.');
 
     // Verify that the non-default revision vid is greater than the default
@@ -157,7 +157,7 @@ function testRevisions() {
       ->execute()
       ->fetchCol();
     $default_revision_vid = $default_revision[0];
-    $this->assertTrue($new_node_revision->vid > $default_revision_vid, 'Revision vid is greater than default revision vid.');
+    $this->assertTrue($new_node_revision->getRevisionId() > $default_revision_vid, 'Revision vid is greater than default revision vid.');
   }
 
   /**
diff --git a/core/modules/node/lib/Drupal/node/Tests/NodeSaveTest.php b/core/modules/node/lib/Drupal/node/Tests/NodeSaveTest.php
index c33aa057338a63818cbcea9768f107fa912b04f9..64f109a605fc8f5ee3fa9b55f596f2b37c3574cc 100644
--- a/core/modules/node/lib/Drupal/node/Tests/NodeSaveTest.php
+++ b/core/modules/node/lib/Drupal/node/Tests/NodeSaveTest.php
@@ -60,7 +60,7 @@ function testImport() {
     $node->enforceIsNew();
 
     // Verify that node_submit did not overwrite the user ID.
-    $this->assertEqual($node->uid, $this->web_user->id(), 'Function node_submit() preserves user ID');
+    $this->assertEqual($node->getAuthorId(), $this->web_user->id(), 'Function node_submit() preserves user ID');
 
     $node->save();
     // Test the import.
@@ -84,24 +84,24 @@ function testTimestamps() {
 
     entity_create('node', $edit)->save();
     $node = $this->drupalGetNodeByTitle($edit['title']);
-    $this->assertEqual($node->created, REQUEST_TIME, 'Creating a node sets default "created" timestamp.');
-    $this->assertEqual($node->changed, REQUEST_TIME, 'Creating a node sets default "changed" timestamp.');
+    $this->assertEqual($node->getCreatedTime(), REQUEST_TIME, 'Creating a node sets default "created" timestamp.');
+    $this->assertEqual($node->getChangedTime(), REQUEST_TIME, 'Creating a node sets default "changed" timestamp.');
 
     // Store the timestamps.
-    $created = $node->created;
-    $changed = $node->changed;
+    $created = $node->getCreatedTime();
+    $changed = $node->getChangedTime();
 
     $node->save();
     $node = $this->drupalGetNodeByTitle($edit['title'], TRUE);
-    $this->assertEqual($node->created, $created, 'Updating a node preserves "created" timestamp.');
+    $this->assertEqual($node->getCreatedTime(), $created, 'Updating a node preserves "created" timestamp.');
 
     // Programmatically set the timestamps using hook_node_presave.
     $node->title = 'testing_node_presave';
 
     $node->save();
     $node = $this->drupalGetNodeByTitle('testing_node_presave', TRUE);
-    $this->assertEqual($node->created, 280299600, 'Saving a node uses "created" timestamp set in presave hook.');
-    $this->assertEqual($node->changed, 979534800, 'Saving a node uses "changed" timestamp set in presave hook.');
+    $this->assertEqual($node->getCreatedTime(), 280299600, 'Saving a node uses "created" timestamp set in presave hook.');
+    $this->assertEqual($node->getChangedTime(), 979534800, 'Saving a node uses "changed" timestamp set in presave hook.');
 
     // Programmatically set the timestamps on the node.
     $edit = array(
@@ -114,17 +114,17 @@ function testTimestamps() {
 
     entity_create('node', $edit)->save();
     $node = $this->drupalGetNodeByTitle($edit['title']);
-    $this->assertEqual($node->created, 280299600, 'Creating a node uses user-set "created" timestamp.');
-    $this->assertNotEqual($node->changed, 979534800, 'Creating a node does not use user-set "changed" timestamp.');
+    $this->assertEqual($node->getCreatedTime(), 280299600, 'Creating a node uses user-set "created" timestamp.');
+    $this->assertNotEqual($node->getChangedTime(), 979534800, 'Creating a node does not use user-set "changed" timestamp.');
 
     // Update the timestamps.
-    $node->created = 979534800;
+    $node->setCreatedTime(979534800);
     $node->changed = 280299600;
 
     $node->save();
     $node = $this->drupalGetNodeByTitle($edit['title'], TRUE);
-    $this->assertEqual($node->created, 979534800, 'Updating a node uses user-set "created" timestamp.');
-    $this->assertNotEqual($node->changed, 280299600, 'Updating a node does not use user-set "changed" timestamp.');
+    $this->assertEqual($node->getCreatedTime(), 979534800, 'Updating a node uses user-set "created" timestamp.');
+    $this->assertNotEqual($node->getChangedTime(), 280299600, 'Updating a node does not use user-set "changed" timestamp.');
   }
 
   /**
@@ -172,6 +172,6 @@ function testNodeSaveOnInsert() {
     // node_test_node_insert() tiggers a save on insert if the title equals
     // 'new'.
     $node = $this->drupalCreateNode(array('title' => 'new'));
-    $this->assertEqual($node->title, 'Node ' . $node->id(), 'Node saved on node insert.');
+    $this->assertEqual($node->getTitle(), 'Node ' . $node->id(), 'Node saved on node insert.');
   }
 }
diff --git a/core/modules/node/lib/Drupal/node/Tests/NodeTokenReplaceTest.php b/core/modules/node/lib/Drupal/node/Tests/NodeTokenReplaceTest.php
index 6416a774cbeb14a886e10588207927d811d1289d..0713d751dbdf72c855d777b9f31a2853f53dd6ed 100644
--- a/core/modules/node/lib/Drupal/node/Tests/NodeTokenReplaceTest.php
+++ b/core/modules/node/lib/Drupal/node/Tests/NodeTokenReplaceTest.php
@@ -44,26 +44,26 @@ function testNodeTokenReplacement() {
 
     // Load node so that the body and summary fields are structured properly.
     $node = node_load($node->id());
-    $instance = field_info_instance('node', 'body', $node->type);
+    $instance = field_info_instance('node', 'body', $node->getType());
 
     // Generate and test sanitized tokens.
     $tests = array();
     $tests['[node:nid]'] = $node->id();
-    $tests['[node:vid]'] = $node->vid;
+    $tests['[node:vid]'] = $node->getRevisionId();
     $tests['[node:tnid]'] = $node->tnid;
     $tests['[node:type]'] = 'article';
     $tests['[node:type-name]'] = 'Article';
-    $tests['[node:title]'] = check_plain($node->title);
-    $tests['[node:body]'] = text_sanitize($instance['settings']['text_processing'], $node->langcode, $node->body[$node->langcode][0], 'value');
-    $tests['[node:summary]'] = text_sanitize($instance['settings']['text_processing'], $node->langcode, $node->body[$node->langcode][0], 'summary');
-    $tests['[node:langcode]'] = check_plain($node->langcode);
+    $tests['[node:title]'] = check_plain($node->getTitle());
+    $tests['[node:body]'] = text_sanitize($instance['settings']['text_processing'], $node->language()->id, $node->body[$node->language()->id][0], 'value');
+    $tests['[node:summary]'] = text_sanitize($instance['settings']['text_processing'], $node->language()->id, $node->body[$node->language()->id][0], 'summary');
+    $tests['[node:langcode]'] = check_plain($node->language()->id);
     $tests['[node:url]'] = url('node/' . $node->id(), $url_options);
     $tests['[node:edit-url]'] = url('node/' . $node->id() . '/edit', $url_options);
     $tests['[node:author]'] = check_plain(user_format_name($account));
-    $tests['[node:author:uid]'] = $node->uid;
+    $tests['[node:author:uid]'] = $node->getAuthorId();
     $tests['[node:author:name]'] = check_plain(user_format_name($account));
-    $tests['[node:created:since]'] = format_interval(REQUEST_TIME - $node->created, 2, $language_interface->id);
-    $tests['[node:changed:since]'] = format_interval(REQUEST_TIME - $node->changed, 2, $language_interface->id);
+    $tests['[node:created:since]'] = format_interval(REQUEST_TIME - $node->getCreatedTime(), 2, $language_interface->id);
+    $tests['[node:changed:since]'] = format_interval(REQUEST_TIME - $node->getChangedTime(), 2, $language_interface->id);
 
     // Test to make sure that we generated something for each token.
     $this->assertFalse(in_array(0, array_map('strlen', $tests)), 'No empty tokens generated.');
@@ -74,10 +74,10 @@ function testNodeTokenReplacement() {
     }
 
     // Generate and test unsanitized tokens.
-    $tests['[node:title]'] = $node->title;
-    $tests['[node:body]'] = $node->body[$node->langcode][0]['value'];
-    $tests['[node:summary]'] = $node->body[$node->langcode][0]['summary'];
-    $tests['[node:langcode]'] = $node->langcode;
+    $tests['[node:title]'] = $node->getTitle();
+    $tests['[node:body]'] = $node->body[$node->language()->id][0]['value'];
+    $tests['[node:summary]'] = $node->body[$node->language()->id][0]['summary'];
+    $tests['[node:langcode]'] = $node->language()->id;
     $tests['[node:author:name]'] = user_format_name($account);
 
     foreach ($tests as $input => $expected) {
@@ -92,11 +92,11 @@ function testNodeTokenReplacement() {
     // Load node (without summary) so that the body and summary fields are
     // structured properly.
     $node = node_load($node->id());
-    $instance = field_info_instance('node', 'body', $node->type);
+    $instance = field_info_instance('node', 'body', $node->getType());
 
     // Generate and test sanitized token - use full body as expected value.
     $tests = array();
-    $tests['[node:summary]'] = text_sanitize($instance['settings']['text_processing'], $node->langcode, $node->body[$node->langcode][0], 'value');
+    $tests['[node:summary]'] = text_sanitize($instance['settings']['text_processing'], $node->language()->id, $node->body[$node->language()->id][0], 'value');
 
     // Test to make sure that we generated something for each token.
     $this->assertFalse(in_array(0, array_map('strlen', $tests)), 'No empty tokens generated for node without a summary.');
@@ -107,7 +107,7 @@ function testNodeTokenReplacement() {
     }
 
     // Generate and test unsanitized tokens.
-    $tests['[node:summary]'] = $node->body[$node->langcode][0]['value'];
+    $tests['[node:summary]'] = $node->body[$node->language()->id][0]['value'];
 
     foreach ($tests as $input => $expected) {
       $output = $token_service->replace($input, array('node' => $node), array('language' => $language_interface, 'sanitize' => FALSE));
diff --git a/core/modules/node/lib/Drupal/node/Tests/PageEditTest.php b/core/modules/node/lib/Drupal/node/Tests/PageEditTest.php
index b9243b2f0648aa57572c34929c6d26bc10f1eee1..43704b00417efb03c390e5cc072b4d28583ef4a8 100644
--- a/core/modules/node/lib/Drupal/node/Tests/PageEditTest.php
+++ b/core/modules/node/lib/Drupal/node/Tests/PageEditTest.php
@@ -52,7 +52,7 @@ function testPageEdit() {
 
     // Check that "edit" link points to correct page.
     $this->clickLink(t('Edit'));
-    $edit_url = url("node/$node->nid/edit", array('absolute' => TRUE));
+    $edit_url = url("node/" . $node->id() . "/edit", array('absolute' => TRUE));
     $actual_url = $this->getURL();
     $this->assertEqual($edit_url, $actual_url, 'On edit page.');
 
@@ -78,7 +78,7 @@ function testPageEdit() {
     $second_web_user = $this->drupalCreateUser(array('administer nodes', 'edit any page content'));
     $this->drupalLogin($second_web_user);
     // Edit the same node, creating a new revision.
-    $this->drupalGet("node/$node->nid/edit");
+    $this->drupalGet("node/" . $node->id() . "/edit");
     $edit = array();
     $edit['title'] = $this->randomName(8);
     $edit[$body_key] = $this->randomName(16);
@@ -87,15 +87,15 @@ function testPageEdit() {
 
     // Ensure that the node revision has been created.
     $revised_node = $this->drupalGetNodeByTitle($edit['title'], TRUE);
-    $this->assertNotIdentical($node->vid, $revised_node->vid, 'A new revision has been created.');
+    $this->assertNotIdentical($node->getRevisionId(), $revised_node->getRevisionId(), 'A new revision has been created.');
     // Ensure that the node author is preserved when it was not changed in the
     // edit form.
-    $this->assertIdentical($node->uid, $revised_node->uid, 'The node author has been preserved.');
+    $this->assertIdentical($node->getAuthorId(), $revised_node->getAuthorId(), 'The node author has been preserved.');
     // Ensure that the revision authors are different since the revisions were
     // made by different users.
-    $first_node_version = node_revision_load($node->vid);
-    $second_node_version = node_revision_load($revised_node->vid);
-    $this->assertNotIdentical($first_node_version->revision_uid, $second_node_version->revision_uid, 'Each revision has a distinct user.');
+    $first_node_version = node_revision_load($node->getRevisionId());
+    $second_node_version = node_revision_load($revised_node->getRevisionId());
+    $this->assertNotIdentical($first_node_version->getRevisionAuthor()->id(), $second_node_version->getRevisionAuthor()->id(), 'Each revision has a distinct user.');
   }
 
   /**
@@ -114,7 +114,7 @@ function testPageAuthoredBy() {
 
     // Check that the node was authored by the currently logged in user.
     $node = $this->drupalGetNodeByTitle($edit['title']);
-    $this->assertIdentical($node->uid, $this->admin_user->id(), 'Node authored by admin user.');
+    $this->assertIdentical($node->getAuthorId(), $this->admin_user->id(), 'Node authored by admin user.');
 
     // Try to change the 'authored by' field to an invalid user name.
     $edit = array(
@@ -128,14 +128,14 @@ function testPageAuthoredBy() {
     $edit['name'] = '';
     $this->drupalPost('node/' . $node->id() . '/edit', $edit, t('Save and keep published'));
     $node = node_load($node->id(), TRUE);
-    $this->assertIdentical($node->uid, '0', 'Node authored by anonymous user.');
+    $this->assertIdentical($node->getAuthorId(), '0', 'Node authored by anonymous user.');
 
     // Change the authored by field to another user's name (that is not
     // logged in).
     $edit['name'] = $this->web_user->getUsername();
     $this->drupalPost('node/' . $node->id() . '/edit', $edit, t('Save and keep published'));
-    $node = node_load($node->nid, TRUE);
-    $this->assertIdentical($node->uid, $this->web_user->id(), 'Node authored by normal user.');
+    $node = node_load($node->id(), TRUE);
+    $this->assertIdentical($node->getAuthorId(), $this->web_user->id(), 'Node authored by normal user.');
 
     // Check that normal users cannot change the authored by information.
     $this->drupalLogin($this->web_user);
diff --git a/core/modules/node/lib/Drupal/node/Tests/PageViewTest.php b/core/modules/node/lib/Drupal/node/Tests/PageViewTest.php
index ececc4c13e90efe25aa55639149dee037fb8d3e9..7186d45878df1cdbf27e2e449badb517fe1b315c 100644
--- a/core/modules/node/lib/Drupal/node/Tests/PageViewTest.php
+++ b/core/modules/node/lib/Drupal/node/Tests/PageViewTest.php
@@ -28,7 +28,7 @@ function testPageView() {
     $this->assertTrue(node_load($node->id()), 'Node created.');
 
     // Try to edit with anonymous user.
-    $this->drupalGet("node/$node->nid/edit");
+    $this->drupalGet("node/" . $node->id() . "/edit");
     $this->assertResponse(403);
 
     // Create a user without permission to edit node.
@@ -36,7 +36,7 @@ function testPageView() {
     $this->drupalLogin($web_user);
 
     // Attempt to access edit page.
-    $this->drupalGet("node/$node->nid/edit");
+    $this->drupalGet("node/" . $node->id() . "/edit");
     $this->assertResponse(403);
 
     // Create user with permission to edit node.
@@ -44,7 +44,7 @@ function testPageView() {
     $this->drupalLogin($web_user);
 
     // Attempt to access edit page.
-    $this->drupalGet("node/$node->nid/edit");
+    $this->drupalGet("node/" . $node->id() . "/edit");
     $this->assertResponse(200);
   }
 }
diff --git a/core/modules/node/lib/Drupal/node/Tests/SummaryLengthTest.php b/core/modules/node/lib/Drupal/node/Tests/SummaryLengthTest.php
index 21b1fe6db4d79022e22368e0cee7e2d4f67837e9..2b0c493abcecd036faa4a4a62798604d61ed2741 100644
--- a/core/modules/node/lib/Drupal/node/Tests/SummaryLengthTest.php
+++ b/core/modules/node/lib/Drupal/node/Tests/SummaryLengthTest.php
@@ -47,7 +47,7 @@ function testSummaryLength() {
     $this->assertRaw($expected);
 
     // Change the teaser length for "Basic page" content type.
-    $display = entity_get_display('node', $node->type, 'teaser');
+    $display = entity_get_display('node', $node->getType(), 'teaser');
     $display_options = $display->getComponent('body');
     $display_options['settings']['trim_length'] = 200;
     $display->setComponent('body', $display_options)
diff --git a/core/modules/node/node.admin.inc b/core/modules/node/node.admin.inc
index ded77897a33d06bdeab932acb4887017e4b6e072..03387f873741f118518e3e70072494c4ab9da98b 100644
--- a/core/modules/node/node.admin.inc
+++ b/core/modules/node/node.admin.inc
@@ -236,10 +236,10 @@ function node_admin_nodes() {
     '#empty' => t('No content available.'),
   );
   foreach ($nodes as $node) {
-    $l_options = $node->langcode != Language::LANGCODE_NOT_SPECIFIED && isset($languages[$node->langcode]) ? array('language' => $languages[$node->langcode]) : array();
+    $l_options = $node->language()->id != Language::LANGCODE_NOT_SPECIFIED && isset($languages[$node->language()->id]) ? array('language' => $languages[$node->language()->id]) : array();
     $mark = array(
       '#theme' => 'mark',
-      '#status' => node_mark($node->id(), $node->changed),
+      '#status' => node_mark($node->id(), $node->getChangedTime()),
     );
     $form['nodes'][$node->id()]['title'] = array(
       '#type' => 'link',
@@ -253,17 +253,17 @@ function node_admin_nodes() {
     );
     $form['nodes'][$node->id()]['author'] = array(
       '#theme' => 'username',
-      '#account' => user_load($node->uid),
+      '#account' => $node->getAuthor(),
     );
     $form['nodes'][$node->id()]['status'] = array(
-      '#markup' => $node->status ? t('published') : t('not published'),
+      '#markup' => $node->isPublished() ? t('published') : t('not published'),
     );
     $form['nodes'][$node->id()]['changed'] = array(
-      '#markup' => format_date($node->changed, 'short'),
+      '#markup' => format_date($node->getChangedTime(), 'short'),
     );
     if ($multilingual) {
       $form['nodes'][$node->id()]['language_name'] = array(
-        '#markup' => language_name($node->langcode),
+        '#markup' => $node->language()->name,
       );
     }
 
diff --git a/core/modules/node/node.api.php b/core/modules/node/node.api.php
index 216639161f371ed257d387a627a78c173a4eb8ff..4fe295f467dbc9a74c2976fbf4f503bae7f86814 100644
--- a/core/modules/node/node.api.php
+++ b/core/modules/node/node.api.php
@@ -214,7 +214,7 @@ function hook_node_grants($account, $op) {
  * - 'gid': A 'grant ID' from hook_node_grants().
  * - 'grant_view': If set to 1 a user that has been identified as a member
  *   of this gid within this realm can view this node. This should usually be
- *   set to $node->status. Failure to do so may expose unpublished content
+ *   set to $node->isPublished(). Failure to do so may expose unpublished content
  *   to some users.
  * - 'grant_update': If set to 1 a user that has been identified as a member
  *   of this gid within this realm can edit this node.
@@ -257,15 +257,15 @@ function hook_node_grants($account, $op) {
  * @see hook_node_access_records_alter()
  * @ingroup node_access
  */
-function hook_node_access_records(\Drupal\Core\Entity\EntityInterface $node) {
+function hook_node_access_records(\Drupal\node\NodeInterface $node) {
   // We only care about the node if it has been marked private. If not, it is
   // treated just like any other node and we completely ignore it.
   if ($node->private) {
     $grants = array();
     // Only published Catalan translations of private nodes should be viewable
-    // to all users. If we fail to check $node->status, all users would be able
+    // to all users. If we fail to check $node->isPublished(), all users would be able
     // to view an unpublished node.
-    if ($node->status) {
+    if ($node->isPublished()) {
       $grants[] = array(
         'realm' => 'example',
         'gid' => 1,
@@ -281,7 +281,7 @@ function hook_node_access_records(\Drupal\Core\Entity\EntityInterface $node) {
     // have status unpublished.
     $grants[] = array(
       'realm' => 'example_author',
-      'gid' => $node->uid,
+      'gid' => $node->getAuthorId(),
       'grant_view' => 1,
       'grant_update' => 1,
       'grant_delete' => 1,
@@ -438,7 +438,7 @@ function hook_node_delete(\Drupal\Core\Entity\EntityInterface $node) {
  */
 function hook_node_revision_delete(\Drupal\Core\Entity\EntityInterface $node) {
   db_delete('mytable')
-    ->condition('vid', $node->vid)
+    ->condition('vid', $node->getRevisionId())
     ->execute();
 }
 
@@ -567,8 +567,8 @@ function hook_node_load($nodes, $types) {
  *
  * @ingroup node_access
  */
-function hook_node_access($node, $op, $account, $langcode) {
-  $type = is_string($node) ? $node : $node->type;
+function hook_node_access(\Drupal\node\NodeInterface $node, $op, $account, $langcode) {
+  $type = is_string($node) ? $node : $node->getType();
 
   $configured_types = node_permissions_get_configured_types();
   if (isset($configured_types[$type])) {
@@ -577,13 +577,13 @@ function hook_node_access($node, $op, $account, $langcode) {
     }
 
     if ($op == 'update') {
-      if (user_access('edit any ' . $type . ' content', $account) || (user_access('edit own ' . $type . ' content', $account) && ($account->id() == $node->uid))) {
+      if (user_access('edit any ' . $type . ' content', $account) || (user_access('edit own ' . $type . ' content', $account) && ($account->id() == $node->getAuthorId()))) {
         return NODE_ACCESS_ALLOW;
       }
     }
 
     if ($op == 'delete') {
-      if (user_access('delete any ' . $type . ' content', $account) || (user_access('delete own ' . $type . ' content', $account) && ($account->id() == $node->uid))) {
+      if (user_access('delete any ' . $type . ' content', $account) || (user_access('delete own ' . $type . ' content', $account) && ($account->id() == $node->getAuthorId()))) {
         return NODE_ACCESS_ALLOW;
       }
     }
@@ -612,7 +612,7 @@ function hook_node_access($node, $op, $account, $langcode) {
  */
 function hook_node_prepare_form(\Drupal\node\NodeInterface $node, $form_display, $operation, array &$form_state) {
   if (!isset($node->comment)) {
-    $node->comment = variable_get("comment_$node->type", COMMENT_NODE_OPEN);
+    $node->comment = variable_get('comment_' . $node->getType(), COMMENT_NODE_OPEN);
   }
 }
 
diff --git a/core/modules/node/node.module b/core/modules/node/node.module
index 200c6f63218603b7eda39f2144dede2911598460..a47b72bad6268a428aee336d370e13e3079cb504 100644
--- a/core/modules/node/node.module
+++ b/core/modules/node/node.module
@@ -537,8 +537,8 @@ function node_load_multiple(array $nids = NULL, $reset = FALSE) {
  *   (optional) Whether to reset the node_load_multiple() cache. Defaults to
  *   FALSE.
  *
- * @return \Drupal\node\Node|null
- *   A fully-populated node entity or NULL if the node is not found.
+ * @return \Drupal\node\NodeInterface|null
+ *   A fully-populated node entity, or NULL if the node is not found.
  */
 function node_load($nid = NULL, $reset = FALSE) {
   $entity = entity_load('node', $nid, $reset);
@@ -548,11 +548,11 @@ function node_load($nid = NULL, $reset = FALSE) {
 /**
  * Loads a node revision from the database.
  *
- * @param int $nid
+ * @param int $vid
  *   The node revision id.
  *
- * @return \Drupal\node\Node|null
- *   A fully-populated node entity or NULL if the node is not found.
+ * @return \Drupal\node\NodeInterface|null
+ *   A fully-populated node entity, or NULL if the node is not found.
  */
 function node_revision_load($vid = NULL) {
   return entity_revision_load('node', $vid);
@@ -693,7 +693,7 @@ function template_preprocess_node(&$variables) {
   //   http://drupal.org/node/1941286.
   $username = array(
     '#theme' => 'username',
-    '#account' => user_load($node->uid),
+    '#account' => $node->getAuthor(),
     '#link_options' => array('attributes' => array('rel' => 'author')),
   );
   $variables['name'] = drupal_render($username);
@@ -951,7 +951,7 @@ function node_search_execute($keys = NULL, $conditions = NULL) {
     $uri = $node->uri();
     $username = array(
       '#theme' => 'username',
-      '#account' => user_load($node->uid),
+      '#account' => $node->getAuthor(),
     );
     $results[] = array(
       'link' => url($uri['path'], array_merge($uri['options'], array('absolute' => TRUE, 'language' => $language))),
diff --git a/core/modules/node/node.pages.inc b/core/modules/node/node.pages.inc
index 48ad45f37b13e76bceef721733f3cc0bb603693a..4cb383b348059b6ed6cc5962915f3694f06d0b07 100644
--- a/core/modules/node/node.pages.inc
+++ b/core/modules/node/node.pages.inc
@@ -11,6 +11,7 @@
 
 use Drupal\Core\Entity\EntityInterface;
 use Symfony\Component\HttpFoundation\RedirectResponse;
+use Drupal\node\NodeInterface;
 
 /**
  * Page callback: Displays add content links for available content types.
@@ -106,21 +107,21 @@ function node_add($node_type) {
  *
  * @see node_form_build_preview()
  */
-function node_preview(EntityInterface $node) {
+function node_preview(NodeInterface $node) {
   if (node_access('create', $node) || node_access('update', $node)) {
     // Load the user's name when needed.
     if (isset($node->name)) {
       // The use of isset() is mandatory in the context of user IDs, because
       // user ID 0 denotes the anonymous user.
       if ($user = user_load_by_name($node->name)) {
-        $node->uid = $user->id();
+        $node->setAuthorId($user->id());
       }
       else {
-        $node->uid = 0; // anonymous user
+        $node->setAuthorId(0); // anonymous user
       }
     }
-    elseif ($node->uid) {
-      $user = user_load($node->uid);
+    elseif ($node->getAuthorId()) {
+      $user = $node->getAuthor();
       $node->name = $user->getUsername();
     }
 
@@ -198,7 +199,7 @@ function node_revision_overview($node) {
   $revisions = node_revision_list($node);
 
   $rows = array();
-  $type = $node->type;
+  $type = $node->getType();
 
   $revert_permission = FALSE;
   if ((user_access("revert $type revisions") || user_access('revert all revisions') || user_access('administer nodes')) && node_access('update', $node)) {
@@ -225,18 +226,18 @@ function node_revision_overview($node) {
         '#theme' => 'username',
         '#account' => user_load($revision->uid),
       );
-      $row[] = t('!date by !username', array('!date' => l(format_date($revision->revision_timestamp, 'short'), "node/$node->nid/revisions/$revision->vid/view"), '!username' => drupal_render($username)))
+      $row[] = t('!date by !username', array('!date' => l(format_date($revision->revision_timestamp, 'short'), "node/" . $node->id() . "/revisions/" . $revision->vid . "/view"), '!username' => drupal_render($username)))
                . (($revision->log != '') ? '<p class="revision-log">' . filter_xss($revision->log) . '</p>' : '');
       if ($revert_permission) {
         $links['revert'] = array(
           'title' => t('Revert'),
-          'href' => "node/$node->nid/revisions/$revision->vid/revert",
+          'href' => "node/" . $node->id() . "/revisions/" . $revision->vid . "/revert",
         );
       }
       if ($delete_permission) {
         $links['delete'] = array(
           'title' => t('Delete'),
-          'href' => "node/$node->nid/revisions/$revision->vid/delete",
+          'href' => "node/" . $node->id() . "/revisions/" . $revision->vid . "/delete",
         );
       }
       $row[] = array(
diff --git a/core/modules/node/node.tokens.inc b/core/modules/node/node.tokens.inc
index 357562144046e850299f53623e3a37286d238e3b..3094ae6830e987a06b277c8298d397415a74c21a 100644
--- a/core/modules/node/node.tokens.inc
+++ b/core/modules/node/node.tokens.inc
@@ -115,7 +115,7 @@ function node_tokens($type, $tokens, array $data = array(), array $options = arr
           break;
 
         case 'vid':
-          $replacements[$original] = $node->vid;
+          $replacements[$original] = $node->getRevisionId();
           break;
 
         case 'tnid':
@@ -123,7 +123,7 @@ function node_tokens($type, $tokens, array $data = array(), array $options = arr
           break;
 
         case 'type':
-          $replacements[$original] = $sanitize ? check_plain($node->type) : $node->type;
+          $replacements[$original] = $sanitize ? check_plain($node->getType()) : $node->getType();
           break;
 
         case 'type-name':
@@ -132,14 +132,14 @@ function node_tokens($type, $tokens, array $data = array(), array $options = arr
           break;
 
         case 'title':
-          $replacements[$original] = $sanitize ? check_plain($node->title) : $node->title;
+          $replacements[$original] = $sanitize ? check_plain($node->getTitle()) : $node->getTitle();
           break;
 
         case 'body':
         case 'summary':
           if (($items = $node->getTranslation($langcode)->get('body')) && !$items->isEmpty()) {
             $item = $items[0];
-            $instance = field_info_instance('node', 'body', $node->type);
+            $instance = field_info_instance('node', 'body', $node->getType());
             $field_langcode = field_language($node, 'body', $langcode);
 
             // If the summary was requested and is not empty, use it.
@@ -155,7 +155,7 @@ function node_tokens($type, $tokens, array $data = array(), array $options = arr
 
                 // Get the 'trim_length' size used for the 'teaser' mode, if
                 // present, or use the default trim_length size.
-                $display_options = entity_get_display('node', $node->type, 'teaser')->getComponent('body');
+                $display_options = entity_get_display('node', $node->getType(), 'teaser')->getComponent('body');
                 if (isset($display_options['settings']['trim_length'])) {
                   $length = $display_options['settings']['trim_length'];
                 }
@@ -172,7 +172,7 @@ function node_tokens($type, $tokens, array $data = array(), array $options = arr
           break;
 
         case 'langcode':
-          $replacements[$original] = $sanitize ? check_plain($node->langcode) : $node->langcode;
+          $replacements[$original] = $sanitize ? check_plain($node->language()->id) : $node->language()->id;
           break;
 
         case 'url':
@@ -185,32 +185,30 @@ function node_tokens($type, $tokens, array $data = array(), array $options = arr
 
         // Default values for the chained tokens handled below.
         case 'author':
-          $account = user_load($node->uid);
-          $name = user_format_name($account);
-          $replacements[$original] = $sanitize ? check_plain($name) : $name;
+          $account = $node->getAuthor() ? $node->getAuthor() : user_load(0);
+          $replacements[$original] = $sanitize ? check_plain($account->label()) : $account->label();
           break;
 
         case 'created':
-          $replacements[$original] = format_date($node->created, 'medium', '', NULL, $langcode);
+          $replacements[$original] = format_date($node->getCreatedTime(), 'medium', '', NULL, $langcode);
           break;
 
         case 'changed':
-          $replacements[$original] = format_date($node->changed, 'medium', '', NULL, $langcode);
+          $replacements[$original] = format_date($node->getChangedTime(), 'medium', '', NULL, $langcode);
           break;
       }
     }
 
     if ($author_tokens = $token_service->findWithPrefix($tokens, 'author')) {
-      $author = user_load($node->uid);
-      $replacements += $token_service->generate('user', $author_tokens, array('user' => $author), $options);
+      $replacements += $token_service->generate('user', $author_tokens, array('user' => $node->getAuthor()), $options);
     }
 
     if ($created_tokens = $token_service->findWithPrefix($tokens, 'created')) {
-      $replacements += $token_service->generate('date', $created_tokens, array('date' => $node->created), $options);
+      $replacements += $token_service->generate('date', $created_tokens, array('date' => $node->getCreatedTime()), $options);
     }
 
     if ($changed_tokens = $token_service->findWithPrefix($tokens, 'changed')) {
-      $replacements += $token_service->generate('date', $changed_tokens, array('date' => $node->changed), $options);
+      $replacements += $token_service->generate('date', $changed_tokens, array('date' => $node->getChangedTime()), $options);
     }
   }
 
diff --git a/core/modules/node/templates/node.html.twig b/core/modules/node/templates/node.html.twig
index ad128114867c57f236c93acb4ae7ed58f13e460c..daf308a1dfc5d2b5bff214dc63279b1ece8644b2 100644
--- a/core/modules/node/templates/node.html.twig
+++ b/core/modules/node/templates/node.html.twig
@@ -5,15 +5,16 @@
  *
  * Available variables:
  * - node: Full node entity.
- *   - type: The type of the node, for example, "page" or "article".
- *   - uid: The user ID of the node author.
- *   - created: Formatted creation date. Preprocess functions can reformat it by
+ *   - id: The node ID
+ *   - bundle: The type of the node, for example, "page" or "article".
+ *   - authorid: The user ID of the node author.
+ *   - createdtime: Formatted creation date. Preprocess functions can reformat it by
  *     calling format_date() with the desired parameters on
- *     $variables['node']->created.
- *   - promote: Whether the node is promoted to the front page.
+ *     $variables['node']->getCreatedTime().
+ *   - promoted: Whether the node is promoted to the front page.
  *   - sticky: Whether the node is 'sticky'. Sticky nodes are ordered above
  *     other non-sticky nodes in teaser listings
- *   - status: Whether the node is published.
+ *   - published: Whether the node is published.
  *   - comment: A value representing the comment status of the current node. May
  *     be one of the following:
  *     - 0: The comment form and any existing comments are hidden.
@@ -81,7 +82,7 @@
  * @ingroup themeable
  */
 #}
-<article id="node-{{ node.nid }}" class="{{ attributes.class }} clearfix"{{ attributes }}>
+<article id="node-{{ node.id }}" class="{{ attributes.class }} clearfix"{{ attributes }}>
 
   {{ title_prefix }}
   {% if not page %}
diff --git a/core/modules/node/tests/modules/node_access_test/node_access_test.module b/core/modules/node/tests/modules/node_access_test/node_access_test.module
index d4bfc2956b51362177ae425f521d47a2ffd8c253..c200908b964d41994cf534f6da7467bf1f1b66dd 100644
--- a/core/modules/node/tests/modules/node_access_test/node_access_test.module
+++ b/core/modules/node/tests/modules/node_access_test/node_access_test.module
@@ -10,6 +10,7 @@
  */
 
 use Drupal\Core\Entity\EntityInterface;
+use Drupal\node\NodeInterface;
 
 /**
  * Implements hook_node_grants().
@@ -32,7 +33,7 @@ function node_access_test_node_grants($account, $op) {
 /**
  * Implements hook_node_access_records().
  */
-function node_access_test_node_access_records(EntityInterface $node) {
+function node_access_test_node_access_records(NodeInterface $node) {
   $grants = array();
   // For NodeAccessBaseTableTestCase, only set records for private nodes.
   if (!Drupal::state()->get('node_access_test.private') || $node->private) {
@@ -56,7 +57,7 @@ function node_access_test_node_access_records(EntityInterface $node) {
     // means there are many many groups of just 1 user.
     $grants[] = array(
       'realm' => 'node_access_test_author',
-      'gid' => $node->uid,
+      'gid' => $node->getAuthorId(),
       'grant_view' => 1,
       'grant_update' => 1,
       'grant_delete' => 1,
diff --git a/core/modules/node/tests/modules/node_test/node_test.module b/core/modules/node/tests/modules/node_test/node_test.module
index a11a616993a0c0d312da77d8af78ae19e76d9370..c0622a48ed4c4b748fe8ba3b52f9ecac159c7f9f 100644
--- a/core/modules/node/tests/modules/node_test/node_test.module
+++ b/core/modules/node/tests/modules/node_test/node_test.module
@@ -10,6 +10,7 @@
 
 use Drupal\Core\Entity\EntityInterface;
 use Drupal\entity\Plugin\Core\Entity\EntityDisplay;
+use Drupal\node\NodeInterface;
 
 /**
  * Implements hook_node_load().
@@ -77,7 +78,7 @@ function node_test_node_access_records(EntityInterface $node) {
     return;
   }
   $grants = array();
-  if ($node->type == 'article') {
+  if ($node->getType() == 'article') {
     // Create grant in arbitrary article_realm for article nodes.
     $grants[] = array(
       'realm' => 'test_article_realm',
@@ -88,7 +89,7 @@ function node_test_node_access_records(EntityInterface $node) {
       'priority' => 0,
     );
   }
-  elseif ($node->type == 'page') {
+  elseif ($node->getType() == 'page') {
     // Create grant in arbitrary page_realm for page nodes.
     $grants[] = array(
       'realm' => 'test_page_realm',
@@ -105,11 +106,11 @@ function node_test_node_access_records(EntityInterface $node) {
 /**
  * Implements hook_node_access_records_alter().
  */
-function node_test_node_access_records_alter(&$grants, EntityInterface $node) {
+function node_test_node_access_records_alter(&$grants, NodeInterface $node) {
   if (!empty($grants)) {
     foreach ($grants as $key => $grant) {
       // Alter grant from test_page_realm to test_alter_realm and modify the gid.
-      if ($grant['realm'] == 'test_page_realm' && $node->promote) {
+      if ($grant['realm'] == 'test_page_realm' && $node->isPromoted()) {
         $grants[$key]['realm'] = 'test_alter_realm';
         $grants[$key]['gid'] = 2;
       }
@@ -129,15 +130,15 @@ function node_test_node_grants_alter(&$grants, $account, $op) {
  * Implements hook_node_presave().
  */
 function node_test_node_presave(EntityInterface $node) {
-  if ($node->title == 'testing_node_presave') {
+  if ($node->getTitle() == 'testing_node_presave') {
     // Sun, 19 Nov 1978 05:00:00 GMT
-    $node->created = 280299600;
+    $node->setCreatedTime(280299600);
     // Drupal 1.0 release.
     $node->changed = 979534800;
   }
   // Determine changes.
-  if (!empty($node->original) && $node->original->title == 'test_changes') {
-    if ($node->original->title != $node->title) {
+  if (!empty($node->original) && $node->original->getTitle() == 'test_changes') {
+    if ($node->original->getTitle() != $node->getTitle()) {
       $node->title .= '_presave';
     }
   }
@@ -148,8 +149,8 @@ function node_test_node_presave(EntityInterface $node) {
  */
 function node_test_node_update(EntityInterface $node) {
   // Determine changes on update.
-  if (!empty($node->original) && $node->original->title == 'test_changes') {
-    if ($node->original->title != $node->title) {
+  if (!empty($node->original) && $node->original->getTitle() == 'test_changes') {
+    if ($node->original->getTitle() != $node->getTitle()) {
       $node->title .= '_update';
     }
   }
@@ -175,7 +176,7 @@ function node_test_entity_view_mode_alter(&$view_mode, Drupal\Core\Entity\Entity
  */
 function node_test_node_insert(EntityInterface $node) {
   // Set the node title to the node ID and save.
-  if ($node->title == 'new') {
+  if ($node->getTitle() == 'new') {
     $node->title = 'Node '. $node->id();
     $node->save();
   }
diff --git a/core/modules/node/tests/modules/node_test_exception/node_test_exception.module b/core/modules/node/tests/modules/node_test_exception/node_test_exception.module
index 9eaa4f1e4880987c25a8a89b443f816635988b1d..184dfce962257d5faa3e5c1da9fe4f5b4ae3c92f 100644
--- a/core/modules/node/tests/modules/node_test_exception/node_test_exception.module
+++ b/core/modules/node/tests/modules/node_test_exception/node_test_exception.module
@@ -11,7 +11,7 @@
  * Implements hook_node_insert().
  */
 function node_test_exception_node_insert(EntityInterface $node) {
-  if ($node->title == 'testing_transaction_exception') {
+  if ($node->getTitle() == 'testing_transaction_exception') {
     throw new Exception('Test exception for rollback.');
   }
 }
diff --git a/core/modules/path/lib/Drupal/path/Tests/PathLanguageTest.php b/core/modules/path/lib/Drupal/path/Tests/PathLanguageTest.php
index 122747d97a73c2bffaec6e828d7526d1dfd8985e..1724a4abb4764eb7411e761cef410c8efe768058 100644
--- a/core/modules/path/lib/Drupal/path/Tests/PathLanguageTest.php
+++ b/core/modules/path/lib/Drupal/path/Tests/PathLanguageTest.php
@@ -86,6 +86,11 @@ function testAliasTranslation() {
     // Clear the path lookup cache.
     $this->container->get('path.alias_manager')->cacheClear();
 
+    // Languages are cached on many levels, and we need to clear those caches.
+    drupal_static_reset('language_list');
+    $this->rebuildContainer();
+    $languages = language_list();
+
     // Ensure the node was created.
     $french_node = $this->drupalGetNodeByTitle($edit["title"]);
     $this->assertTrue(($french_node), 'Node found in database.');
@@ -94,12 +99,8 @@ function testAliasTranslation() {
     $this->drupalGet('fr/' . $edit['path[alias]']);
     $this->assertText($french_node->label(), 'Alias for French translation works.');
 
-    // Confirm that the alias is returned by url(). Languages are cached on
-    // many levels, and we need to clear those caches.
-    drupal_static_reset('language_list');
-    $this->rebuildContainer();
-    $languages = language_list();
-    $url = $this->container->get('url_generator')->generateFromPath('node/' . $french_node->id(), array('language' => $languages[$french_node->langcode]));
+    // Confirm that the alias is returned by url().
+    $url = $this->container->get('url_generator')->generateFromPath('node/' . $french_node->id(), array('language' => $languages[$french_node->language()->id]));
 
     $this->assertTrue(strpos($url, $edit['path[alias]']), 'URL contains the path alias.');
 
@@ -150,17 +151,17 @@ function testAliasTranslation() {
     // The alias manager has an internal path lookup cache. Check to see that
     // it has the appropriate contents at this point.
     $this->container->get('path.alias_manager')->cacheClear();
-    $french_node_path = $this->container->get('path.alias_manager')->getSystemPath($french_alias, $french_node->langcode);
+    $french_node_path = $this->container->get('path.alias_manager')->getSystemPath($french_alias, $french_node->language()->id);
     $this->assertEqual($french_node_path, 'node/' . $french_node->id(), 'Normal path works.');
     // Second call should return the same path.
-    $french_node_path = $this->container->get('path.alias_manager')->getSystemPath($french_alias, $french_node->langcode);
+    $french_node_path = $this->container->get('path.alias_manager')->getSystemPath($french_alias, $french_node->language()->id);
     $this->assertEqual($french_node_path, 'node/' . $french_node->id(), 'Normal path is the same.');
 
     // Confirm that the alias works.
-    $french_node_alias = $this->container->get('path.alias_manager')->getPathAlias('node/' . $french_node->id(), $french_node->langcode);
+    $french_node_alias = $this->container->get('path.alias_manager')->getPathAlias('node/' . $french_node->id(), $french_node->language()->id);
     $this->assertEqual($french_node_alias, $french_alias, 'Alias works.');
     // Second call should return the same alias.
-    $french_node_alias = $this->container->get('path.alias_manager')->getPathAlias('node/' . $french_node->id(), $french_node->langcode);
+    $french_node_alias = $this->container->get('path.alias_manager')->getPathAlias('node/' . $french_node->id(), $french_node->language()->id);
     $this->assertEqual($french_node_alias, $french_alias, 'Alias is the same.');
   }
 }
diff --git a/core/modules/path/path.module b/core/modules/path/path.module
index 0966334649d5603acc1c1c38f4e51ecac94e2e38..683f637e0469c724bbb7dcd98b88b55e444b05f4 100644
--- a/core/modules/path/path.module
+++ b/core/modules/path/path.module
@@ -5,9 +5,8 @@
  * Enables users to rename URLs.
  */
 
-use Drupal\Core\Entity\EntityInterface;
-
 use Drupal\Core\Language\Language;
+use Drupal\node\NodeInterface;
 use Drupal\taxonomy\Plugin\Core\Entity\Term;
 
 /**
@@ -101,8 +100,8 @@ function path_form_node_form_alter(&$form, $form_state) {
   $path = array();
   if (!$node->isNew()) {
     $conditions = array('source' => 'node/' . $node->id());
-    if ($node->langcode != Language::LANGCODE_NOT_SPECIFIED) {
-      $conditions['langcode'] = $node->langcode;
+    if ($node->language()->id != Language::LANGCODE_NOT_SPECIFIED) {
+      $conditions['langcode'] = $node->language()->id;
     }
     $path = Drupal::service('path.crud')->load($conditions);
     if ($path === FALSE) {
@@ -113,7 +112,7 @@ function path_form_node_form_alter(&$form, $form_state) {
     'pid' => NULL,
     'source' => $node->id() ? 'node/' . $node->id() : NULL,
     'alias' => '',
-    'langcode' => isset($node->langcode) ? $node->langcode : Language::LANGCODE_NOT_SPECIFIED,
+    'langcode' => $node->language()->id,
   );
 
   $form['path'] = array(
@@ -184,14 +183,14 @@ function path_form_element_validate($element, &$form_state, $complete_form) {
 /**
  * Implements hook_node_insert().
  */
-function path_node_insert(EntityInterface $node) {
+function path_node_insert(NodeInterface $node) {
   if (isset($node->path)) {
     $alias = trim($node->path['alias']);
     // Only save a non-empty alias.
     if (!empty($alias)) {
       // Ensure fields for programmatic executions.
       $source = 'node/' . $node->id();
-      $langcode = isset($node->langcode) ? $node->langcode : Language::LANGCODE_NOT_SPECIFIED;
+      $langcode = $node->language()->id;
       Drupal::service('path.crud')->save($source, $alias, $langcode);
     }
   }
@@ -200,7 +199,7 @@ function path_node_insert(EntityInterface $node) {
 /**
  * Implements hook_node_update().
  */
-function path_node_update(EntityInterface $node) {
+function path_node_update(NodeInterface $node) {
   if (isset($node->path)) {
     $path = $node->path;
     $alias = trim($path['alias']);
@@ -212,7 +211,7 @@ function path_node_update(EntityInterface $node) {
     if (!empty($path['alias'])) {
       // Ensure fields for programmatic executions.
       $source = 'node/' . $node->id();
-      $langcode = isset($node->langcode) ? $node->langcode : Language::LANGCODE_NOT_SPECIFIED;
+      $langcode = $node->language()->id;
       Drupal::service('path.crud')->save($source, $alias, $langcode, $path['pid']);
     }
   }
@@ -221,7 +220,7 @@ function path_node_update(EntityInterface $node) {
 /**
  * Implements hook_node_predelete().
  */
-function path_node_predelete(EntityInterface $node) {
+function path_node_predelete(NodeInterface $node) {
   // Delete all aliases associated with this node.
   Drupal::service('path.crud')->delete(array('source' => 'node/' . $node->id()));
 }
diff --git a/core/modules/rdf/lib/Drupal/rdf/Tests/NodeAttributesTest.php b/core/modules/rdf/lib/Drupal/rdf/Tests/NodeAttributesTest.php
index a026bd64e6c54336eb8ecebff8d47ae87acc4509..e8ba1d3898e2092513e0ad12cd319a885282f50c 100644
--- a/core/modules/rdf/lib/Drupal/rdf/Tests/NodeAttributesTest.php
+++ b/core/modules/rdf/lib/Drupal/rdf/Tests/NodeAttributesTest.php
@@ -77,21 +77,21 @@ function testNodeAttributes() {
     // Node title.
     $expected_value = array(
       'type' => 'literal',
-      'value' => $node->title,
+      'value' => $node->getTitle(),
       'lang' => 'en',
     );
     $this->assertTrue($graph->hasProperty($node_uri, 'http://purl.org/dc/terms/title', $expected_value), 'Node title found in RDF output (dc:title).');
     // Node date.
     $expected_value = array(
       'type' => 'literal',
-      'value' => date('c', $node->created),
+      'value' => date('c', $node->getCreatedTime()),
       'datatype' => 'http://www.w3.org/2001/XMLSchema#dateTime',
     );
     $this->assertTrue($graph->hasProperty($node_uri, 'http://purl.org/dc/terms/date', $expected_value), 'Node date found in RDF output (dc:date).');
     // Node date.
     $expected_value = array(
       'type' => 'literal',
-      'value' => date('c', $node->created),
+      'value' => date('c', $node->getCreatedTime()),
       'datatype' => 'http://www.w3.org/2001/XMLSchema#dateTime',
     );
     $this->assertTrue($graph->hasProperty($node_uri, 'http://purl.org/dc/terms/created', $expected_value), 'Node date found in RDF output (dc:created).');
diff --git a/core/modules/rdf/lib/Drupal/rdf/Tests/TrackerAttributesTest.php b/core/modules/rdf/lib/Drupal/rdf/Tests/TrackerAttributesTest.php
index 909b7b5ae684ecd0bc61b147e651890730fcc7c6..072fcc5b3bb95d9934b63ba095f6f6ebdd8d651b 100644
--- a/core/modules/rdf/lib/Drupal/rdf/Tests/TrackerAttributesTest.php
+++ b/core/modules/rdf/lib/Drupal/rdf/Tests/TrackerAttributesTest.php
@@ -119,9 +119,9 @@ function testAttributesInTracker() {
    */
   function _testBasicTrackerRdfaMarkup(EntityInterface $node) {
     $node_uri = url('node/' . $node->id(), array('absolute' => TRUE));
-    $user_uri = url('user/' . $node->uid, array('absolute' => TRUE));
+    $user_uri = url('user/' . $node->getAuthorId(), array('absolute' => TRUE));
 
-    $user = ($node->uid == 0) ? 'Anonymous user' : 'Registered user';
+    $user = ($node->getAuthorId() == 0) ? 'Anonymous user' : 'Registered user';
 
     // Parses tracker page where the nodes are displayed in a table.
     $parser = new \EasyRdf_Parser_Rdfa();
@@ -134,7 +134,7 @@ function _testBasicTrackerRdfaMarkup(EntityInterface $node) {
       'type' => 'literal',
       // The theme layer adds a space after the title a element, and the RDFa
       // attribute is on the wrapping td. Adds a space to match this.
-      'value' => $node->title . ' ',
+      'value' => $node->getTitle() . ' ',
       'lang' => 'en',
     );
     $this->assertTrue($graph->hasProperty($node_uri, 'http://purl.org/dc/terms/title', $expected_value), 'Title found in RDF output (dc:title).');
@@ -150,16 +150,16 @@ function _testBasicTrackerRdfaMarkup(EntityInterface $node) {
       'type' => 'uri',
       'value' => $user_uri,
     );
-    if ($node->uid == 0) {
+    if ($node->getAuthorId() == 0) {
       $this->assertFalse($graph->hasProperty($node_uri, 'http://rdfs.org/sioc/ns#has_creator', $expected_value), 'No relation to author found in RDF output (sioc:has_creator).');
     }
-    elseif ($node->uid > 0) {
+    elseif ($node->getAuthorId() > 0) {
       $this->assertTrue($graph->hasProperty($node_uri, 'http://rdfs.org/sioc/ns#has_creator', $expected_value), 'Relation to author found in RDF output (sioc:has_creator).');
     }
     // Last updated.
     $expected_value = array(
       'type' => 'literal',
-      'value' => date('c', $node->changed),
+      'value' => date('c', $node->getChangedTime()),
       'datatype' => 'http://www.w3.org/2001/XMLSchema#dateTime',
     );
     $this->assertTrue($graph->hasProperty($node_uri, 'http://rdfs.org/sioc/ns#last_activity_date', $expected_value), 'Last activity date found in RDF output (sioc:last_activity_date).');
diff --git a/core/modules/rdf/rdf.module b/core/modules/rdf/rdf.module
index 06b25a05812b40ab5b4a9f8438ae4936e5629567..16f4b911ac929f2c4b29d8a0e140eac22ba6e4ac 100644
--- a/core/modules/rdf/rdf.module
+++ b/core/modules/rdf/rdf.module
@@ -277,7 +277,7 @@ function rdf_preprocess_node(&$variables) {
   // Adds RDFa markup for the date.
   $created_mapping = $mapping->getPreparedFieldMapping('created');
   if (!empty($created_mapping) && $variables['submitted']) {
-    $date_attributes = rdf_rdfa_attributes($created_mapping, $variables['node']->created);
+    $date_attributes = rdf_rdfa_attributes($created_mapping, $variables['node']->getCreatedTime());
     $rdf_metadata = array(
       '#theme' => 'rdf_metadata',
       '#metadata' => array($date_attributes),
diff --git a/core/modules/search/lib/Drupal/search/Tests/SearchAdvancedSearchFormTest.php b/core/modules/search/lib/Drupal/search/Tests/SearchAdvancedSearchFormTest.php
index 5b0efebb781a26db78d3bb573c05a4cb326c3120..ed47384400d90f405d8c8fa45d7c5d0b32a1c8fd 100644
--- a/core/modules/search/lib/Drupal/search/Tests/SearchAdvancedSearchFormTest.php
+++ b/core/modules/search/lib/Drupal/search/Tests/SearchAdvancedSearchFormTest.php
@@ -42,7 +42,7 @@ function setUp() {
    * Test using the advanced search form to limit search to nodes of type "Basic page".
    */
   function testNodeType() {
-    $this->assertTrue($this->node->type == 'page', 'Node type is Basic page.');
+    $this->assertTrue($this->node->getType() == 'page', 'Node type is Basic page.');
 
     // Assert that the dummy title doesn't equal the real title.
     $dummy_title = 'Lorem ipsum';
diff --git a/core/modules/search/search.api.php b/core/modules/search/search.api.php
index 649a933fa93ff7a693eb001306e1150c8b129f0c..1fff4a6fe71a5e4ef068f063b9db37b82881339a 100644
--- a/core/modules/search/search.api.php
+++ b/core/modules/search/search.api.php
@@ -226,12 +226,12 @@ function hook_search_execute($keys = NULL, $conditions = NULL) {
       'type' => check_plain(node_get_type_label($node)),
       'title' => $node->label($item->langcode),
       'user' => drupal_render($username),
-      'date' => $node->changed,
+      'date' => $node->getChangedTime(),
       'node' => $node,
       'extra' => $extra,
       'score' => $item->calculated_score,
       'snippet' => search_excerpt($keys, $node->rendered, $item->langcode),
-      'langcode' => $node->langcode,
+      'langcode' => $node->language()->id,
     );
   }
   return $results;
@@ -347,7 +347,7 @@ function hook_update_index() {
 
     // Save the changed time of the most recent indexed node, for the search
     // results half-life calculation.
-    \Drupal::state()->set('node.cron_last', $node->changed);
+    \Drupal::state()->set('node.cron_last', $node->getChangedTime());
 
     // Render the node.
     $build = node_view($node, 'search_index');
diff --git a/core/modules/system/lib/Drupal/system/Tests/Entity/EntityTranslationFormTest.php b/core/modules/system/lib/Drupal/system/Tests/Entity/EntityTranslationFormTest.php
index 80e8a6b3987958d8c579ba8f763a1d738d66febe..4404ca575e46acdaf1f9ecb698dc7c64136793cc 100644
--- a/core/modules/system/lib/Drupal/system/Tests/Entity/EntityTranslationFormTest.php
+++ b/core/modules/system/lib/Drupal/system/Tests/Entity/EntityTranslationFormTest.php
@@ -69,12 +69,12 @@ function testEntityFormLanguage() {
     $this->drupalPost(NULL, $edit, t('Save'));
 
     $node = $this->drupalGetNodeByTitle($edit["title"]);
-    $this->assertTrue($node->langcode == $form_langcode, 'Form language is the same as the entity language.');
+    $this->assertTrue($node->language()->id == $form_langcode, 'Form language is the same as the entity language.');
 
     // Edit the node and test the form language.
     $this->drupalGet($this->langcodes[0] . '/node/' . $node->id() . '/edit');
     $form_langcode = \Drupal::state()->get('entity_test.form_langcode') ?: FALSE;
-    $this->assertTrue($node->langcode == $form_langcode, 'Form language is the same as the entity language.');
+    $this->assertTrue($node->language()->id == $form_langcode, 'Form language is the same as the entity language.');
 
     // Explicitly set form langcode.
     $langcode = $this->langcodes[0];
diff --git a/core/modules/system/lib/Drupal/system/Tests/Menu/BreadcrumbTest.php b/core/modules/system/lib/Drupal/system/Tests/Menu/BreadcrumbTest.php
index d51c9ea75c3fb239e8b8825b5c2feb6336cff6e7..7d1814efaedde7917c79ea71f06c2f90c7c20cd8 100644
--- a/core/modules/system/lib/Drupal/system/Tests/Menu/BreadcrumbTest.php
+++ b/core/modules/system/lib/Drupal/system/Tests/Menu/BreadcrumbTest.php
@@ -174,15 +174,15 @@ function testBreadCrumbs() {
     $trail = $home;
     $this->assertBreadcrumb("node/$nid1", $trail);
     // Also verify that the node does not appear elsewhere (e.g., menu trees).
-    $this->assertNoLink($node1->title);
+    $this->assertNoLink($node1->getTitle());
     // The node itself should not be contained in the breadcrumb on the default
     // local task, since there is no difference between both pages.
     $this->assertBreadcrumb("node/$nid1/view", $trail);
     // Also verify that the node does not appear elsewhere (e.g., menu trees).
-    $this->assertNoLink($node1->title);
+    $this->assertNoLink($node1->getTitle());
 
     $trail += array(
-      "node/$nid1" => $node1->title,
+      "node/$nid1" => $node1->getTitle(),
     );
     $this->assertBreadcrumb("node/$nid1/edit", $trail);
 
@@ -220,10 +220,10 @@ function testBreadCrumbs() {
       $tree = array(
         "node/$nid2" => $node2->menu['link_title'],
       );
-      $this->assertBreadcrumb("node/$nid2", $trail, $node2->title, $tree);
+      $this->assertBreadcrumb("node/$nid2", $trail, $node2->getTitle(), $tree);
       // The node itself should not be contained in the breadcrumb on the
       // default local task, since there is no difference between both pages.
-      $this->assertBreadcrumb("node/$nid2/view", $trail, $node2->title, $tree);
+      $this->assertBreadcrumb("node/$nid2/view", $trail, $node2->getTitle(), $tree);
       $trail += array(
         "node/$nid2" => $node2->menu['link_title'],
       );
@@ -244,10 +244,10 @@ function testBreadCrumbs() {
       ));
       $nid3 = $node3->id();
 
-      $this->assertBreadcrumb("node/$nid3", $trail, $node3->title, $tree, FALSE);
+      $this->assertBreadcrumb("node/$nid3", $trail, $node3->getTitle(), $tree, FALSE);
       // The node itself should not be contained in the breadcrumb on the
       // default local task, since there is no difference between both pages.
-      $this->assertBreadcrumb("node/$nid3/view", $trail, $node3->title, $tree, FALSE);
+      $this->assertBreadcrumb("node/$nid3/view", $trail, $node3->getTitle(), $tree, FALSE);
       $trail += array(
         "node/$nid3" => $node3->menu['link_title'],
       );
@@ -288,14 +288,14 @@ function testBreadCrumbs() {
     $tree = $expected + array(
       'node/' . $parent->id() => $parent->menu['link_title'],
     );
-    $this->assertBreadcrumb(NULL, $trail, $parent->title, $tree);
+    $this->assertBreadcrumb(NULL, $trail, $parent->getTitle(), $tree);
     $trail += array(
       'node/' . $parent->id() => $parent->menu['link_title'],
     );
     $tree += array(
       'node/' . $parent->id() => $child->menu['link_title'],
     );
-    $this->assertBreadcrumb('node/' . $child->id(), $trail, $child->title, $tree);
+    $this->assertBreadcrumb('node/' . $child->id(), $trail, $child->getTitle(), $tree);
 
     // Add a taxonomy term/tag to last node, and add a link for that term to the
     // Tools menu.
@@ -350,7 +350,7 @@ function testBreadCrumbs() {
         $link['link_path'] => $link['link_title'],
       );
       $this->assertBreadcrumb($link['link_path'], $trail, $term->label(), $tree);
-      $this->assertRaw(check_plain($parent->title), 'Tagged node found.');
+      $this->assertRaw(check_plain($parent->getTitle()), 'Tagged node found.');
 
       // Additionally make sure that this link appears only once; i.e., the
       // untranslated menu links automatically generated from menu router items
diff --git a/core/modules/system/lib/Drupal/system/Tests/ParamConverter/UpcastingTest.php b/core/modules/system/lib/Drupal/system/Tests/ParamConverter/UpcastingTest.php
index ad966e2a24dd1d2deaed05daaa603bdae30175c7..f1ff08fcd94e33cd9d89f3ef84f14c1b0750f5d7 100644
--- a/core/modules/system/lib/Drupal/system/Tests/ParamConverter/UpcastingTest.php
+++ b/core/modules/system/lib/Drupal/system/Tests/ParamConverter/UpcastingTest.php
@@ -51,12 +51,12 @@ public function testUpcasting() {
 
     // paramconverter_test/test_node_user_user/{node}/{foo}/{user}
     // options.parameters.foo.type = entity:user
-    $this->drupalGet("paramconverter_test/test_node_user_user/{$node->nid}/" . $user->id() . "/" . $user->id());
+    $this->drupalGet("paramconverter_test/test_node_user_user/" . $node->id() . "/" . $user->id() . "/" . $user->id());
     $this->assertRaw("user: {$user->label()}, node: {$node->label()}, foo: {$user->label()}", 'foo converted to user as well');
 
     // paramconverter_test/test_node_node_foo/{user}/{node}/{foo}
     // options.parameters.user.type = entity:node
-    $this->drupalGet("paramconverter_test/test_node_node_foo/{$node->nid}/{$node->nid}/$foo");
+    $this->drupalGet("paramconverter_test/test_node_node_foo/" . $node->id() . "/" . $node->id() . "/$foo");
     $this->assertRaw("user: {$node->label()}, node: {$node->label()}, foo: $foo", 'user is upcast to node (rather than to user)');
   }
 
@@ -68,7 +68,7 @@ public function testSameTypes() {
     $parent = $this->drupalCreateNode(array('title' => $this->randomName(8)));
     // paramconverter_test/node/{node}/set/parent/{parent}
     // options.parameters.parent.type = entity:node
-    $this->drupalGet("paramconverter_test/node/" . $node->nid . "/set/parent/" . $parent->nid);
-    $this->assertRaw("Setting '" . $parent->title . "' as parent of '" . $node->title . "'.");
+    $this->drupalGet("paramconverter_test/node/" . $node->id() . "/set/parent/" . $parent->id());
+    $this->assertRaw("Setting '" . $parent->getTitle() . "' as parent of '" . $node->getTitle() . "'.");
   }
 }
diff --git a/core/modules/system/lib/Drupal/system/Tests/System/DateFormatsLanguageTest.php b/core/modules/system/lib/Drupal/system/Tests/System/DateFormatsLanguageTest.php
index 962d21f7648ba2249bca92f90c60c2fc5cfb7205..e17c7094f694b0dd066312f339e90a9907209eb5 100644
--- a/core/modules/system/lib/Drupal/system/Tests/System/DateFormatsLanguageTest.php
+++ b/core/modules/system/lib/Drupal/system/Tests/System/DateFormatsLanguageTest.php
@@ -100,10 +100,10 @@ function testLocalizeDateFormats() {
 
     // Configure format for the node posted date changes with the language.
     $this->drupalGet('node/' . $node->id());
-    $english_date = format_date($node->created, 'custom', 'j M Y');
+    $english_date = format_date($node->getCreatedTime(), 'custom', 'j M Y');
     $this->assertText($english_date, 'English date format appears');
     $this->drupalGet('fr/node/' . $node->id());
-    $french_date = format_date($node->created, 'custom', 'd.m.Y');
+    $french_date = format_date($node->getCreatedTime(), 'custom', 'd.m.Y');
     $this->assertText($french_date, 'French date format appears');
 
     // Make sure we can reset dates back to default.
diff --git a/core/modules/system/lib/Drupal/system/Tests/System/TokenReplaceTest.php b/core/modules/system/lib/Drupal/system/Tests/System/TokenReplaceTest.php
index 84bf929e9e07658bf254986fe456aabfa33500dd..4350d10ef7bff3bf964f66fb2b9a3471fea9d0a5 100644
--- a/core/modules/system/lib/Drupal/system/Tests/System/TokenReplaceTest.php
+++ b/core/modules/system/lib/Drupal/system/Tests/System/TokenReplaceTest.php
@@ -43,9 +43,9 @@ function testTokenReplacement() {
     $source .= '[user:name]';          // No user passed in, should be untouched
     $source .= '[bogus:token]';        // Non-existent token
 
-    $target  = check_plain($node->title);
+    $target  = check_plain($node->getTitle());
     $target .= check_plain($account->getUsername());
-    $target .= format_interval(REQUEST_TIME - $node->created, 2, $language_interface->id);
+    $target .= format_interval(REQUEST_TIME - $node->getCreatedTime(), 2, $language_interface->id);
     $target .= check_plain($user->getUsername());
     $target .= format_date(REQUEST_TIME, 'short', '', NULL, $language_interface->id);
 
@@ -65,10 +65,10 @@ function testTokenReplacement() {
     // correctly by a 'known' token, [node:title].
     $raw_tokens = array('title' => '[node:title]');
     $generated = $token_service->generate('node', $raw_tokens, array('node' => $node));
-    $this->assertEqual($generated['[node:title]'], check_plain($node->title), 'Token sanitized.');
+    $this->assertEqual($generated['[node:title]'], check_plain($node->getTitle()), 'Token sanitized.');
 
     $generated = $token_service->generate('node', $raw_tokens, array('node' => $node), array('sanitize' => FALSE));
-    $this->assertEqual($generated['[node:title]'], $node->title, 'Unsanitized token generated properly.');
+    $this->assertEqual($generated['[node:title]'], $node->getTitle(), 'Unsanitized token generated properly.');
 
     // Test token replacement when the string contains no tokens.
     $this->assertEqual($token_service->replace('No tokens here.'), 'No tokens here.');
diff --git a/core/modules/system/lib/Drupal/system/Tests/Theme/EntityFilteringThemeTest.php b/core/modules/system/lib/Drupal/system/Tests/Theme/EntityFilteringThemeTest.php
index f7d53e2cb2d454e66e10105ef48cbc33b4a83f51..bf62114480e67618a95fabe384762b7f4b6d27ed 100644
--- a/core/modules/system/lib/Drupal/system/Tests/Theme/EntityFilteringThemeTest.php
+++ b/core/modules/system/lib/Drupal/system/Tests/Theme/EntityFilteringThemeTest.php
@@ -108,7 +108,7 @@ function setUp() {
     // Create a test comment on the test node.
     $this->comment = entity_create('comment', array(
       'nid' => $this->node->id(),
-      'node_type' => $this->node->type,
+      'node_type' => $this->node->getType(),
       'status' => COMMENT_PUBLISHED,
       'subject' => $this->xss_label,
       'comment_body' => array($this->randomName()),
diff --git a/core/modules/system/lib/Drupal/system/Tests/Upgrade/LanguageUpgradePathTest.php b/core/modules/system/lib/Drupal/system/Tests/Upgrade/LanguageUpgradePathTest.php
index 4c5f59093ba8fc0e7a8ea22fae73946b7b283561..2fba93f6a9ba7f27e8f5e94e9164b1b8f3799ba1 100644
--- a/core/modules/system/lib/Drupal/system/Tests/Upgrade/LanguageUpgradePathTest.php
+++ b/core/modules/system/lib/Drupal/system/Tests/Upgrade/LanguageUpgradePathTest.php
@@ -84,9 +84,9 @@ public function testLanguageUpgrade() {
     $spanish_nid = 51;
     $translation_source_nid = 52;
     $translation_nid = 53;
-    // Check directly for the $node->langcode property.
-    $this->assertEqual(node_load($language_none_nid)->langcode, Language::LANGCODE_NOT_SPECIFIED, "'language' property was renamed to 'langcode' for Language::LANGCODE_NOT_SPECIFIED node.");
-    $this->assertEqual(node_load($spanish_nid)->langcode, 'ca', "'language' property was renamed to 'langcode' for Catalan node.");
+    // Check directly for the node langcode.
+    $this->assertEqual(node_load($language_none_nid)->language()->id, Language::LANGCODE_NOT_SPECIFIED, "'language' property was renamed to 'langcode' for Language::LANGCODE_NOT_SPECIFIED node.");
+    $this->assertEqual(node_load($spanish_nid)->language()->id, 'ca', "'language' property was renamed to 'langcode' for Catalan node.");
     // Check that the translation table works correctly.
     $this->drupalGet("node/$translation_source_nid/translate");
     $this->assertResponse(200, 'The translated node has a proper translation table.');
diff --git a/core/modules/system/system.api.php b/core/modules/system/system.api.php
index bbc3c72f40635a8b39d61d6bc17403d53f2ba05c..fca2eb0304f5d9b273571e563b1d774cbd0a3e5f 100644
--- a/core/modules/system/system.api.php
+++ b/core/modules/system/system.api.php
@@ -1861,10 +1861,10 @@ function hook_mail($key, &$message, $params) {
   if (isset($params['node'])) {
     $node = $params['node'];
     $variables += array(
-      '%uid' => $node->uid,
+      '%uid' => $node->getAuthorId(),
       '%node_url' => url('node/' . $node->id(), array('absolute' => TRUE)),
       '%node_type' => node_get_type_label($node),
-      '%title' => $node->title,
+      '%title' => $node->getTitle(),
       '%teaser' => $node->teaser,
       '%body' => $node->body,
     );
@@ -3144,7 +3144,7 @@ function hook_tokens($type, $tokens, array $data = array(), array $options = arr
           break;
 
         case 'title':
-          $replacements[$original] = $sanitize ? check_plain($node->title) : $node->title;
+          $replacements[$original] = $sanitize ? check_plain($node->getTitle()) : $node->getTitle();
           break;
 
         case 'edit-url':
@@ -3153,23 +3153,22 @@ function hook_tokens($type, $tokens, array $data = array(), array $options = arr
 
         // Default values for the chained tokens handled below.
         case 'author':
-          $name = ($node->uid == 0) ? Drupal::config('user.settings')->get('anonymous') : $node->name;
-          $replacements[$original] = $sanitize ? filter_xss($name) : $name;
+          $account = $node->getAuthor() ? $node->getAuthor() : user_load(0);
+          $replacements[$original] = $sanitize ? check_plain($account->label()) : $account->label();
           break;
 
         case 'created':
-          $replacements[$original] = format_date($node->created, 'medium', '', NULL, $langcode);
+          $replacements[$original] = format_date($node->getCreatedTime(), 'medium', '', NULL, $langcode);
           break;
       }
     }
 
     if ($author_tokens = $token_service->findWithPrefix($tokens, 'author')) {
-      $author = user_load($node->uid);
-      $replacements += $token_service->generate('user', $author_tokens, array('user' => $author), $options);
+      $replacements += $token_service->generate('user', $author_tokens, array('user' => $node->getAuthor()), $options);
     }
 
     if ($created_tokens = $token_service->findWithPrefix($tokens, 'created')) {
-      $replacements += $token_service->generate('date', $created_tokens, array('date' => $node->created), $options);
+      $replacements += $token_service->generate('date', $created_tokens, array('date' => $node->getCreatedTime()), $options);
     }
   }
 
diff --git a/core/modules/taxonomy/lib/Drupal/taxonomy/Plugin/views/argument_default/Tid.php b/core/modules/taxonomy/lib/Drupal/taxonomy/Plugin/views/argument_default/Tid.php
index 02574353db6303d87e489fc61de3651286fc4db7..2ceb8438dc0bf6e8b3bbf3df8f74ae51c0d8c797 100644
--- a/core/modules/taxonomy/lib/Drupal/taxonomy/Plugin/views/argument_default/Tid.php
+++ b/core/modules/taxonomy/lib/Drupal/taxonomy/Plugin/views/argument_default/Tid.php
@@ -135,7 +135,7 @@ public function getArgument() {
       // Just check, if a node could be detected.
       if ($node) {
         $taxonomy = array();
-        $fields = field_info_instances('node', $node->type);
+        $fields = field_info_instances('node', $node->getType());
         foreach ($fields as $name => $info) {
           $field_info = field_info_field($name);
           if ($field_info['type'] == 'taxonomy_term_reference') {
diff --git a/core/modules/taxonomy/lib/Drupal/taxonomy/Tests/LegacyTest.php b/core/modules/taxonomy/lib/Drupal/taxonomy/Tests/LegacyTest.php
index 5a34e15914e540afe6073915b966b566700b033a..3758df78b4a0427180c53c7025d5b523597d021b 100644
--- a/core/modules/taxonomy/lib/Drupal/taxonomy/Tests/LegacyTest.php
+++ b/core/modules/taxonomy/lib/Drupal/taxonomy/Tests/LegacyTest.php
@@ -48,6 +48,6 @@ function testTaxonomyLegacyNode() {
     $this->drupalPost('node/add/article', $edit, t('Save and publish'));
     // Checks that the node has been saved.
     $node = $this->drupalGetNodeByTitle($edit['title']);
-    $this->assertEqual($node->created, $date->getTimestamp(), 'Legacy node was saved with the right date.');
+    $this->assertEqual($node->getCreatedTime(), $date->getTimestamp(), 'Legacy node was saved with the right date.');
   }
 }
diff --git a/core/modules/taxonomy/taxonomy.module b/core/modules/taxonomy/taxonomy.module
index 090baaffdf2e1719d6bf5470ec1790e9e15e2ec6..17bbb8cf6a6bf920e23a830d4206cca6225f8039 100644
--- a/core/modules/taxonomy/taxonomy.module
+++ b/core/modules/taxonomy/taxonomy.module
@@ -1130,22 +1130,14 @@ function taxonomy_build_node_index($node) {
   // only data for current, published nodes.
   $status = NULL;
   if (Drupal::config('taxonomy.settings')->get('maintain_index_table')) {
-    // If a node property is not set in the node object when $node->save() is
-    // called, the old value from $node->original is used.
-    if (!empty($node->original)) {
-      $status = (int)(!empty($node->status) || (!isset($node->status) && !empty($node->original->status)));
-      $sticky = (int)(!empty($node->sticky) || (!isset($node->sticky) && !empty($node->original->sticky)));
-    }
-    else {
-      $status = (int)(!empty($node->status));
-      $sticky = (int)(!empty($node->sticky));
-    }
+    $status = $node->isPublished();
+    $sticky = (int) $node->isSticky();
   }
   // We only maintain the taxonomy index for published nodes.
   if ($status && $node->isDefaultRevision()) {
     // Collect a unique list of all the term IDs from all node fields.
     $tid_all = array();
-    foreach (field_info_instances('node', $node->type) as $instance) {
+    foreach (field_info_instances('node', $node->getType()) as $instance) {
       $field_name = $instance['field_name'];
       $field = field_info_field($field_name);
       if ($field['module'] == 'taxonomy' && $field['storage']['type'] == 'field_sql_storage') {
@@ -1177,7 +1169,7 @@ function taxonomy_build_node_index($node) {
           'nid' => $node->id(),
           'tid' => $tid,
           'sticky' => $sticky,
-          'created' => $node->created,
+          'created' => $node->getCreatedTime(),
         ));
       }
       $query->execute();
diff --git a/core/modules/tracker/lib/Drupal/tracker/Tests/TrackerNodeAccessTest.php b/core/modules/tracker/lib/Drupal/tracker/Tests/TrackerNodeAccessTest.php
index 76033fb52b612c12c8802c09727f2ea0da05dd70..4598aae2df45915c830f4e2db2404ec23c1eb28a 100644
--- a/core/modules/tracker/lib/Drupal/tracker/Tests/TrackerNodeAccessTest.php
+++ b/core/modules/tracker/lib/Drupal/tracker/Tests/TrackerNodeAccessTest.php
@@ -59,19 +59,19 @@ function testTrackerNodeAccess() {
 
     // User with access should see both nodes created.
     $this->drupalGet('tracker');
-    $this->assertText($private_node->title, 'Private node is visible to user with private access.');
-    $this->assertText($public_node->title, 'Public node is visible to user with private access.');
+    $this->assertText($private_node->getTitle(), 'Private node is visible to user with private access.');
+    $this->assertText($public_node->getTitle(), 'Public node is visible to user with private access.');
     $this->drupalGet('user/' . $access_user->id() . '/track');
-    $this->assertText($private_node->title, 'Private node is visible to user with private access.');
-    $this->assertText($public_node->title, 'Public node is visible to user with private access.');
+    $this->assertText($private_node->getTitle(), 'Private node is visible to user with private access.');
+    $this->assertText($public_node->getTitle(), 'Public node is visible to user with private access.');
 
     // User without access should not see private node.
     $this->drupalLogin($no_access_user);
     $this->drupalGet('tracker');
-    $this->assertNoText($private_node->title, 'Private node is not visible to user without private access.');
-    $this->assertText($public_node->title, 'Public node is visible to user without private access.');
+    $this->assertNoText($private_node->getTitle(), 'Private node is not visible to user without private access.');
+    $this->assertText($public_node->getTitle(), 'Public node is visible to user without private access.');
     $this->drupalGet('user/' . $access_user->id() . '/track');
-    $this->assertNoText($private_node->title, 'Private node is not visible to user without private access.');
-    $this->assertText($public_node->title, 'Public node is visible to user without private access.');
+    $this->assertNoText($private_node->getTitle(), 'Private node is not visible to user without private access.');
+    $this->assertText($public_node->getTitle(), 'Public node is visible to user without private access.');
   }
 }
diff --git a/core/modules/tracker/lib/Drupal/tracker/Tests/Views/TrackerUserUidTest.php b/core/modules/tracker/lib/Drupal/tracker/Tests/Views/TrackerUserUidTest.php
index 804774d791738b26b3f2842f164fe06bf24b3c6f..54a689b8f10772f672668250a14128c5140ac0eb 100644
--- a/core/modules/tracker/lib/Drupal/tracker/Tests/Views/TrackerUserUidTest.php
+++ b/core/modules/tracker/lib/Drupal/tracker/Tests/Views/TrackerUserUidTest.php
@@ -52,7 +52,7 @@ public function testUserUid() {
 
     // Change the filter value to our user.
     $view->initHandlers();
-    $view->filter['uid_touch_tracker']->value = $this->node->uid;
+    $view->filter['uid_touch_tracker']->value = $this->node->getAuthorId();
     $this->executeView($view);
 
     // We should have one result as the filter is set for the created user.
@@ -70,7 +70,7 @@ public function testUserUid() {
 
     // Test the correct argument UID.
     $view->initHandlers();
-    $this->executeView($view, array($this->node->uid));
+    $this->executeView($view, array($this->node->getAuthorId()));
     $this->assertIdenticalResultSet($view, $expected, $map);
   }
 
diff --git a/core/modules/tracker/tracker.module b/core/modules/tracker/tracker.module
index 1052b5fcebb6f6a204292b1be894262aa9df29a6..581a10df1e33486e97daf676eb3af653d20ecfcb 100644
--- a/core/modules/tracker/tracker.module
+++ b/core/modules/tracker/tracker.module
@@ -6,6 +6,7 @@
  */
 
 use Drupal\Core\Entity\EntityInterface;
+use Drupal\node\NodeInterface;
 
 /**
  * Implements hook_help().
@@ -195,8 +196,8 @@ function _tracker_user_access($account) {
  *
  * Adds new tracking information for this node since it's new.
  */
-function tracker_node_insert(EntityInterface $node, $arg = 0) {
-  _tracker_add($node->id(), $node->uid, $node->changed);
+function tracker_node_insert(NodeInterface $node, $arg = 0) {
+  _tracker_add($node->id(), $node->getAuthorId(), $node->getChangedTime());
 }
 
 /**
@@ -204,8 +205,8 @@ function tracker_node_insert(EntityInterface $node, $arg = 0) {
  *
  * Adds tracking information for this node since it's been updated.
  */
-function tracker_node_update(EntityInterface $node, $arg = 0) {
-  _tracker_add($node->id(), $node->uid, $node->changed);
+function tracker_node_update(NodeInterface $node, $arg = 0) {
+  _tracker_add($node->id(), $node->getAuthorId(), $node->getChangedTime());
 }
 
 /**
@@ -302,14 +303,14 @@ function _tracker_add($nid, $uid, $changed) {
 }
 
 /**
- * Determines the max timestamp between $node->changed and the last comment.
+ * Picks the most recent timestamp between node changed and the last comment.
  *
  * @param $nid
  *   A node ID.
  *
  * @return
- *  The $node->changed timestamp, or most recent comment timestamp, whichever
- *  is the greatest.
+ *  The node changed timestamp, or most recent comment timestamp, whichever is
+ *  the greatest.
  */
 function _tracker_calculate_changed($nid) {
   // @todo This should be actually filtering on the desired language and just
diff --git a/core/modules/tracker/tracker.pages.inc b/core/modules/tracker/tracker.pages.inc
index cf2f51a33f215e4ad88526bffbd61be014cb93a6..8e187eff74666cb8206b05f8f5f886c714674bed 100644
--- a/core/modules/tracker/tracker.pages.inc
+++ b/core/modules/tracker/tracker.pages.inc
@@ -76,21 +76,20 @@ function tracker_page($account = NULL, $set_title = FALSE) {
 
       $mark_build = array(
         '#theme' => 'mark',
-        '#status' => node_mark($node->id(), $node->changed),
+        '#status' => node_mark($node->id(), $node->getChangedTime()),
       );
 
       $row = array(
         'type' => check_plain(node_get_type_label($node)),
-        // Do not use $node->label(), because $node comes from the database.
-        'title' => array('data' => l($node->title, 'node/' . $node->id()) . ' ' . drupal_render($mark_build)),
-        'author' => array('data' => array('#theme' => 'username', '#account' => user_load($node->uid))),
+        'title' => array('data' => l($node->getTitle(), 'node/' . $node->id()) . ' ' . drupal_render($mark_build)),
+        'author' => array('data' => array('#theme' => 'username', '#account' => $node->getAuthor())),
         'replies' => array('class' => array('replies'), 'data' => $comments),
         'last updated' => array('data' => t('!time ago', array('!time' => format_interval(REQUEST_TIME - $node->last_activity)))),
       );
 
       // Adds extra RDFa markup to the $row array if the RDF module is enabled.
       if (module_exists('rdf')) {
-        $mapping = rdf_get_mapping('node', $node->type);
+        $mapping = rdf_get_mapping('node', $node->getType());
         // Adds RDFa markup to the title of the node. Because the RDFa markup is
         // added to the td tag which might contain HTML code, we specify an
         // empty datatype to ensure the value of the title read by the RDFa
diff --git a/core/modules/translation/lib/Drupal/translation/Tests/TranslationTest.php b/core/modules/translation/lib/Drupal/translation/Tests/TranslationTest.php
index 761197ac299fa2293f4304558d4fc10efbed647d..434464e9844757cceb367aa819472963508a559e 100644
--- a/core/modules/translation/lib/Drupal/translation/Tests/TranslationTest.php
+++ b/core/modules/translation/lib/Drupal/translation/Tests/TranslationTest.php
@@ -86,7 +86,7 @@ function testContentTranslation() {
     $languages = language_list();
     $prefixes = language_negotiation_url_prefixes();
     $this->drupalGet('node/' . $node->id() . '/translate');
-    $this->assertLinkByHref($prefixes['es'] . '/node/add/' . $node->type, 0, format_string('The "add translation" link for %language points to the localized path of the target language.', array('%language' => $languages['es']->name)));
+    $this->assertLinkByHref($prefixes['es'] . '/node/add/' . $node->getType(), 0, format_string('The "add translation" link for %language points to the localized path of the target language.', array('%language' => $languages['es']->name)));
 
     // Submit translation in Spanish.
     $node_translation_title = $this->randomName();
@@ -450,7 +450,7 @@ function assertLanguageSwitchLinks(NodeInterface $node, $translation, $find = TR
 
     $result = TRUE;
     $languages = language_list();
-    $page_language = $languages[$node->langcode];
+    $page_language = $languages[$node->language()->id];
     $translation_language = $languages[$translation->langcode];
     $url = url("node/$translation->nid", array('language' => $translation_language));
 
diff --git a/core/modules/translation/translation.module b/core/modules/translation/translation.module
index 5846ca2c01131a9bdbc0f95e1503ee7629baec5d..56a514787146d89c5d96cea90b4361bfb7e6ccc4 100644
--- a/core/modules/translation/translation.module
+++ b/core/modules/translation/translation.module
@@ -87,8 +87,8 @@ function translation_menu() {
  *
  * @see translation_menu()
  */
-function _translation_tab_access($node) {
-  if ($node->langcode != Language::LANGCODE_NOT_SPECIFIED && translation_supported_type($node->type) && node_access('view', $node)) {
+function _translation_tab_access(NodeInterface $node) {
+  if ($node->language()->id != Language::LANGCODE_NOT_SPECIFIED && translation_supported_type($node->getType()) && node_access('view', $node)) {
     return translation_user_can_translate_node($node);
   }
   return FALSE;
@@ -154,7 +154,7 @@ function translation_user_can_translate_node($node, $account = NULL) {
   if (empty($account)) {
     $account = $GLOBALS['user'];
   }
-  return node_access('view', $node, $account) && (user_access('translate all content', $account) || ($node->uid == $account->id() && user_access('translate own content', $account)));
+  return node_access('view', $node, $account) && (user_access('translate all content', $account) || ($node->getAuthorId() == $account->id() && user_access('translate own content', $account)));
 }
 
 /**
@@ -199,7 +199,7 @@ function translation_node_type_language_translation_enabled_validate($element, &
  */
 function translation_form_node_form_alter(&$form, &$form_state) {
   $node = $form_state['controller']->getEntity();
-  if (translation_supported_type($node->type)) {
+  if (translation_supported_type($node->getType())) {
     if (!empty($node->translation_source)) {
       // We are creating a translation. Add values and lock language field.
       $form['translation_source'] = array('#type' => 'value', '#value' => $node->translation_source);
@@ -272,7 +272,7 @@ function translation_node_view(EntityInterface $node, EntityDisplay $display, $v
 
     foreach ($translations as $langcode => $translation) {
       // Do not show links to the same node or to unpublished translations.
-      if ($translation->status && isset($languages[$langcode]) && $langcode != $node->langcode) {
+      if ($translation->status && isset($languages[$langcode]) && $langcode != $node->language()->id) {
         $key = "translation_$langcode";
 
         if (isset($custom_links->links[$langcode])) {
@@ -313,7 +313,7 @@ function translation_node_prepare_form(NodeInterface $node, $form_display, $oper
   $translation = $query->get('translation');
   $target = $query->get('target');
   // Only act if we are dealing with a content type supporting translations.
-  if (translation_supported_type($node->type) &&
+  if (translation_supported_type($node->getType()) &&
     // And it's a new node.
     $node->isNew() &&
     // And the request variables are set properly.
@@ -325,7 +325,7 @@ function translation_node_prepare_form(NodeInterface $node, $form_display, $oper
 
     $language_list = language_list();
     $langcode = $target;
-    if (!isset($language_list[$langcode]) || ($source_node->langcode == $langcode)) {
+    if (!isset($language_list[$langcode]) || ($source_node->language()->id == $langcode)) {
       // If not supported language, or same language as source node, break.
       return;
     }
@@ -334,7 +334,7 @@ function translation_node_prepare_form(NodeInterface $node, $form_display, $oper
     if (!empty($source_node->tnid)) {
       $translations = translation_node_get_translations($source_node->tnid);
       if (isset($translations[$langcode])) {
-        drupal_set_message(t('A translation of %title in %language already exists, a new %type will be created instead of a translation.', array('%title' => $source_node->label(), '%language' => $language_list[$langcode]->name, '%type' => $node->type)), 'error');
+        drupal_set_message(t('A translation of %title in %language already exists, a new %type will be created instead of a translation.', array('%title' => $source_node->label(), '%language' => $language_list[$langcode]->name, '%type' => $node->getType())), 'error');
         return;
       }
     }
@@ -342,7 +342,7 @@ function translation_node_prepare_form(NodeInterface $node, $form_display, $oper
     // Populate fields based on source node.
     $node->langcode = $langcode;
     $node->translation_source = $source_node;
-    $node->title = $source_node->title;
+    $node->title = $source_node->getTitle();
   }
 }
 
@@ -351,7 +351,7 @@ function translation_node_prepare_form(NodeInterface $node, $form_display, $oper
  */
 function translation_node_insert(EntityInterface $node) {
   // Only act if we are dealing with a content type supporting translations.
-  if (translation_supported_type($node->type)) {
+  if (translation_supported_type($node->getType())) {
     if (!empty($node->translation_source)) {
       if ($node->translation_source->tnid) {
         // Add node to existing translation set.
@@ -384,10 +384,10 @@ function translation_node_insert(EntityInterface $node) {
 /**
  * Implements hook_node_update().
  */
-function translation_node_update(EntityInterface $node) {
+function translation_node_update(NodeInterface $node) {
   // Only act if we are dealing with a content type supporting translations.
-  if (translation_supported_type($node->type)) {
-    if (isset($node->translation) && $node->translation && !empty($node->langcode) && $node->tnid) {
+  if (translation_supported_type($node->getType())) {
+    if (isset($node->translation) && $node->translation && $node->tnid) {
       // Update translation information.
       db_update('node')
         ->fields(array(
@@ -416,7 +416,7 @@ function translation_node_update(EntityInterface $node) {
 function translation_node_validate(EntityInterface $node, $form, &$form_state) {
   // Only act on translatable nodes with a tnid or translation_source.
   $form_node = $form_state['controller']->getEntity();
-  if (translation_supported_type($node->type) && (!empty($node->tnid) || ($form_node->translation_source && $form_node->translation_source->id()))) {
+  if (translation_supported_type($node->getType()) && (!empty($node->tnid) || ($form_node->translation_source && $form_node->translation_source->id()))) {
     $tnid = !empty($node->tnid) ? $node->tnid : $form_node->translation_source->id();
     $translations = translation_node_get_translations($tnid);
     if (isset($translations[$node->language()->id]) && $translations[$node->language()->id]->nid != $node->id()) {
@@ -430,7 +430,7 @@ function translation_node_validate(EntityInterface $node, $form, &$form_state) {
  */
 function translation_node_predelete(EntityInterface $node) {
   // Only act if we are dealing with a content type supporting translations.
-  if (translation_supported_type($node->type)) {
+  if (translation_supported_type($node->getType())) {
     translation_remove_from_set($node);
   }
 }
@@ -554,10 +554,10 @@ function translation_language_switch_links_alter(array &$links, $type, $path) {
       // have translations it might be a language neutral node, in which case we
       // must leave the language switch links unaltered. This is true also for
       // nodes not having translation support enabled.
-      if (empty($node) || $node->langcode == Language::LANGCODE_NOT_SPECIFIED || !translation_supported_type($node->type)) {
+      if (empty($node) || $node->language()->id == Language::LANGCODE_NOT_SPECIFIED || !translation_supported_type($node->getType())) {
         return;
       }
-      $translations = array($node->langcode => $node);
+      $translations = array($node->language()->id => $node);
     }
     else {
       $translations = translation_node_get_translations($node->tnid);
diff --git a/core/modules/translation/translation.pages.inc b/core/modules/translation/translation.pages.inc
index 62d2ada411ea72cc58e9da8ae93a9295ff0091fe..2b787bf9b02d5f4d37b53d5b0251359e22ae585a 100644
--- a/core/modules/translation/translation.pages.inc
+++ b/core/modules/translation/translation.pages.inc
@@ -30,7 +30,7 @@ function translation_node_overview(EntityInterface $node) {
   else {
     // We have no translation source nid, this could be a new set, emulate that.
     $tnid = $node->nid;
-    $translations = array($node->langcode => $node);
+    $translations = array($node->language()->id => $node);
   }
 
   $type = Drupal::config('translation.settings')->get('language_type');
@@ -55,7 +55,7 @@ function translation_node_overview(EntityInterface $node) {
           ) + $links->links[$langcode];
         }
       }
-      $status = $translation_node->status ? t('Published') : t('Not published');
+      $status = $translation_node->isPublished() ? t('Published') : t('Not published');
       $status .= $translation_node->translate ? ' - <span class="marker">' . t('outdated') . '</span>' : '';
       if ($translation_node->id() == $tnid) {
         $language_name = t('<strong>@language_name</strong> (source)', array('@language_name' => $language_name));
@@ -65,7 +65,7 @@ function translation_node_overview(EntityInterface $node) {
       // No such translation in the set yet: help user to create it.
       $title = t('n/a');
       if (node_access('create', $node)) {
-        $path = 'node/add/' . $node->type;
+        $path = 'node/add/' . $node->getType();
         $links = language_negotiation_get_switch_links($type, $path);
         $query = array('query' => array('translation' => $node->id(), 'target' => $langcode));
         if (!empty($links->links[$langcode]['href'])) {
diff --git a/core/modules/user/lib/Drupal/user/Plugin/views/argument_default/User.php b/core/modules/user/lib/Drupal/user/Plugin/views/argument_default/User.php
index f58c641eed06fae113625b0ee9934ee57d2e09b5..42d39a7cf629c45b9a8dbc3e46712554b12fb242 100644
--- a/core/modules/user/lib/Drupal/user/Plugin/views/argument_default/User.php
+++ b/core/modules/user/lib/Drupal/user/Plugin/views/argument_default/User.php
@@ -56,7 +56,7 @@ public function getArgument() {
       foreach (range(1, 3) as $i) {
         $node = menu_get_object('node', $i);
         if (!empty($node)) {
-          return $node->uid;
+          return $node->getAuthorId();
         }
       }
     }
@@ -69,7 +69,7 @@ public function getArgument() {
       if (arg(0) == 'node' && is_numeric(arg(1))) {
         $node = node_load(arg(1));
         if ($node) {
-          return $node->uid;
+          return $node->getAuthorId();
         }
       }
     }
diff --git a/core/modules/user/lib/Drupal/user/Tests/UserCancelTest.php b/core/modules/user/lib/Drupal/user/Tests/UserCancelTest.php
index e87393324ced53bb01fa15d89a80277cc7d4c406..af8d8c97abe733b6c19c10131a734f2ceee71389 100644
--- a/core/modules/user/lib/Drupal/user/Tests/UserCancelTest.php
+++ b/core/modules/user/lib/Drupal/user/Tests/UserCancelTest.php
@@ -57,7 +57,7 @@ function testUserCancelWithoutPermission() {
 
     // Confirm user's content has not been altered.
     $test_node = node_load($node->id(), TRUE);
-    $this->assertTrue(($test_node->uid == $account->id() && $test_node->status == 1), 'Node of the user has not been altered.');
+    $this->assertTrue(($test_node->getAuthorId() == $account->id() && $test_node->isPublished()), 'Node of the user has not been altered.');
   }
 
   /**
@@ -138,7 +138,7 @@ function testUserCancelInvalid() {
 
     // Confirm user's content has not been altered.
     $test_node = node_load($node->id(), TRUE);
-    $this->assertTrue(($test_node->uid == $account->id() && $test_node->status == 1), 'Node of the user has not been altered.');
+    $this->assertTrue(($test_node->getAuthorId() == $account->id() && $test_node->isPublished()), 'Node of the user has not been altered.');
   }
 
   /**
@@ -212,9 +212,9 @@ function testUserBlockUnpublish() {
 
     // Confirm user's content has been unpublished.
     $test_node = node_load($node->id(), TRUE);
-    $this->assertTrue($test_node->status == 0, 'Node of the user has been unpublished.');
-    $test_node = node_revision_load($node->vid);
-    $this->assertTrue($test_node->status == 0, 'Node revision of the user has been unpublished.');
+    $this->assertFalse($test_node->isPublished(), 'Node of the user has been unpublished.');
+    $test_node = node_revision_load($node->getRevisionId());
+    $this->assertFalse($test_node->isPublished(), 'Node revision of the user has been unpublished.');
 
     // Confirm that the confirmation message made it through to the end user.
     $this->assertRaw(t('%name has been disabled.', array('%name' => $account->getUsername())), "Confirmation message displayed to user.");
@@ -238,7 +238,7 @@ function testUserAnonymize() {
     // Create a node with two revisions, the initial one belonging to the
     // cancelling user.
     $revision_node = $this->drupalCreateNode(array('uid' => $account->id()));
-    $revision = $revision_node->vid;
+    $revision = $revision_node->getRevisionId();
     $settings = get_object_vars($revision_node);
     $settings['revision'] = 1;
     $settings['uid'] = 1; // Set new/current revision to someone else.
@@ -261,11 +261,11 @@ function testUserAnonymize() {
 
     // Confirm that user's content has been attributed to anonymous user.
     $test_node = node_load($node->id(), TRUE);
-    $this->assertTrue(($test_node->uid == 0 && $test_node->status == 1), 'Node of the user has been attributed to anonymous user.');
+    $this->assertTrue(($test_node->getAuthorId() == 0 && $test_node->isPublished()), 'Node of the user has been attributed to anonymous user.');
     $test_node = node_revision_load($revision, TRUE);
-    $this->assertTrue(($test_node->revision_uid == 0 && $test_node->status == 1), 'Node revision of the user has been attributed to anonymous user.');
+    $this->assertTrue(($test_node->getRevisionAuthor()->id() == 0 && $test_node->isPublished()), 'Node revision of the user has been attributed to anonymous user.');
     $test_node = node_load($revision_node->id(), TRUE);
-    $this->assertTrue(($test_node->uid != 0 && $test_node->status == 1), "Current revision of the user's node was not attributed to anonymous user.");
+    $this->assertTrue(($test_node->getAuthorId() != 0 && $test_node->isPublished()), "Current revision of the user's node was not attributed to anonymous user.");
 
     // Confirm that the confirmation message made it through to the end user.
     $this->assertRaw(t('%name has been deleted.', array('%name' => $account->getUsername())), "Confirmation message displayed to user.");
@@ -304,7 +304,7 @@ function testUserDelete() {
     // Create a node with two revisions, the initial one belonging to the
     // cancelling user.
     $revision_node = $this->drupalCreateNode(array('uid' => $account->id()));
-    $revision = $revision_node->vid;
+    $revision = $revision_node->getRevisionId();
     $settings = get_object_vars($revision_node);
     $settings['revision'] = 1;
     $settings['uid'] = 1; // Set new/current revision to someone else.
diff --git a/core/modules/user/user.module b/core/modules/user/user.module
index 42d59adc40f8da6a3416e0e2a256a60bd36dd008..e3ff5257f7db338ae80ead376b7343c442be9b38 100644
--- a/core/modules/user/user.module
+++ b/core/modules/user/user.module
@@ -168,14 +168,14 @@ function user_label($entity_type, $entity) {
 function user_attach_accounts(array $entities) {
   $uids = array();
   foreach ($entities as $entity) {
-    $uids[] = $entity->uid;
+    $uids[] = $entity->getAuthorId();
   }
   $uids = array_unique($uids);
   $accounts = user_load_multiple($uids);
   $anonymous = drupal_anonymous_user();
   foreach ($entities as $id => $entity) {
-    if (isset($accounts[$entity->uid])) {
-      $entities[$id]->account = $accounts[$entity->uid];
+    if (isset($accounts[$entity->getAuthorId()])) {
+      $entities[$id]->account = $accounts[$entity->getAuthorId()];
     }
     else {
       $entities[$id]->account = $anonymous;
@@ -1966,7 +1966,7 @@ function user_node_load($nodes, $types) {
   // Build an array of all uids for node authors, keyed by nid.
   $uids = array();
   foreach ($nodes as $nid => $node) {
-    $uids[$nid] = $node->uid;
+    $uids[$nid] = $node->getAuthorId();
   }
 
   // Fetch name and data for these users.
diff --git a/core/modules/views/lib/Drupal/views/Plugin/views/argument/Date.php b/core/modules/views/lib/Drupal/views/Plugin/views/argument/Date.php
index fefd5d1fcce8c1c9ebbe3c6b6654a1080f0cc5ed..868c20d20ad0e016a504c3eae264432653091bd2 100644
--- a/core/modules/views/lib/Drupal/views/Plugin/views/argument/Date.php
+++ b/core/modules/views/lib/Drupal/views/Plugin/views/argument/Date.php
@@ -77,10 +77,10 @@ public function getDefaultArgument($raw = FALSE) {
         return parent::getDefaultArgument();
       }
       elseif ($this->options['default_argument_type'] == 'node_created') {
-        return date($this->argFormat, $node->created);
+        return date($this->argFormat, $node->getCreatedTime());
       }
       elseif ($this->options['default_argument_type'] == 'node_changed') {
-        return date($this->argFormat, $node->changed);
+        return date($this->argFormat, $node->getChangedTime());
       }
     }
 
diff --git a/core/themes/bartik/templates/node.html.twig b/core/themes/bartik/templates/node.html.twig
index d8af3d54798f6d69e9595932ccd8a276fea66dc4..d45cc55bdbedf81d67a819800747f24ea3d61a51 100644
--- a/core/themes/bartik/templates/node.html.twig
+++ b/core/themes/bartik/templates/node.html.twig
@@ -5,15 +5,16 @@
  *
  * Available variables:
  * - node: Full node entity.
- *   - type: The type of the node, for example, "page" or "article".
- *   - uid: The user ID of the node author.
- *   - created: Formatted creation date. Preprocess functions can reformat it by
- *     calling format_date() with the desired parameters on
- *     $variables['node']->created.
- *   - promote: Whether the node is promoted to the front page.
+ *   - id: The node ID
+ *   - bundle: The type of the node, for example, "page" or "article".
+ *   - authorid: The user ID of the node author.
+ *   - createdtime: Formatted creation date. Preprocess functions can reformat
+       it by calling format_date() with the desired parameters on
+ *     $variables['node']->getCreatedTime().
+ *   - promoted: Whether the node is promoted to the front page.
  *   - sticky: Whether the node is 'sticky'. Sticky nodes are ordered above
  *     other non-sticky nodes in teaser listings
- *   - status: Whether the node is published.
+ *   - published: Whether the node is published.
  *   - comment: A value representing the comment status of the current node. May
  *     be one of the following:
  *     - 0: The comment form and any existing comments are hidden.
@@ -77,7 +78,7 @@
  * @ingroup themeable
  */
 #}
-<article id="node-{{ node.nid }}" class="{{ attributes.class}} clearfix"{{ attributes }} role="article">
+<article id="node-{{ node.id }}" class="{{ attributes.class}} clearfix"{{ attributes }} role="article">
 
   <header>
     {{ title_prefix }}
diff --git a/core/themes/seven/seven.theme b/core/themes/seven/seven.theme
index a73fb56121711b79bb415345b206dd18c6a79800..5735f2913e9c51681943601a66628691c95378d3 100644
--- a/core/themes/seven/seven.theme
+++ b/core/themes/seven/seven.theme
@@ -172,20 +172,20 @@ function seven_form_node_form_alter(&$form, &$form_state) {
     'published' => array(
       '#type' => 'item',
       '#wrapper_attributes' => array('class' => array('published')),
-      '#markup' => !empty($node->status) ? t('Published') : t('Not published'),
+      '#markup' => $node->isPublished() ? t('Published') : t('Not published'),
       '#access' => !$node->isNew(),
     ),
     'changed' => array(
       '#type' => 'item',
       '#wrapper_attributes' => array('class' => array('changed', 'container-inline')),
       '#title' => t('Last saved'),
-      '#markup' => !$node->isNew() ? format_date($node->changed, 'short') : t('Not saved yet'),
+      '#markup' => !$node->isNew() ? format_date($node->getChangedTime(), 'short') : t('Not saved yet'),
     ),
     'author' => array(
       '#type' => 'item',
       '#wrapper_attributes' => array('class' => array('author', 'container-inline')),
       '#title' => t('Author'),
-      '#markup' => user_format_name(user_load($node->uid)),
+      '#markup' => $node->getAuthor()->getUsername(),
     ),
   );
   $form['revision_information']['#type'] = 'container';