Commit 6a68e8fc authored by ayelet_Cr's avatar ayelet_Cr
Browse files

Deleted old sqlite files.

parent 0a324d30
<?php
/**
* @file
* Database interface code for SQLite embedded database engine.
*/
/**
* @ingroup database
* @{
*/
include_once DRUPAL_ROOT . '/core/includes/database/prefetch.inc';
/**
* Specific SQLite implementation of DatabaseConnection.
*
* See DatabaseConnection_sqlite::PDOPrepare() for reasons why we must prefetch
* the data instead of using PDOStatement.
*
* @see DatabaseConnection_sqlite::PDOPrepare()
*/
class DatabaseStatement_sqlite extends StatementPrefetch implements Iterator, StatementInterface {
/**
* SQLite specific implementation of getStatement().
*
* The PDO SQLite layer doesn't replace numeric placeholders in queries
* correctly, and this makes numeric expressions (such as COUNT(*) >= :count)
* fail. We replace numeric placeholders in the query ourselves to work
* around this bug.
*
* See http://bugs.php.net/bug.php?id=45259 for more details.
*/
protected function getStatement($query, &$args = array()) {
if (count($args)) {
// Check if $args is a simple numeric array.
if (range(0, count($args) - 1) === array_keys($args)) {
// In that case, we have unnamed placeholders.
$count = 0;
$new_args = array();
foreach ($args as $value) {
if (is_float($value) || is_int($value)) {
if (is_float($value)) {
// Force the conversion to float so as not to loose precision
// in the automatic cast.
$value = sprintf('%F', $value);
}
$query = substr_replace($query, $value, strpos($query, '?'), 1);
}
else {
$placeholder = ':db_statement_placeholder_' . $count++;
$query = substr_replace($query, $placeholder, strpos($query, '?'), 1);
$new_args[$placeholder] = $value;
}
}
$args = $new_args;
}
else {
// Else, this is using named placeholders.
foreach ($args as $placeholder => $value) {
if (is_float($value) || is_int($value)) {
if (is_float($value)) {
// Force the conversion to float so as not to loose precision
// in the automatic cast.
$value = sprintf('%F', $value);
}
// We will remove this placeholder from the query as PDO throws an
// exception if the number of placeholders in the query and the
// arguments does not match.
unset($args[$placeholder]);
// PDO allows placeholders to not be prefixed by a colon. See
// http://marc.info/?l=php-internals&m=111234321827149&w=2 for
// more.
if ($placeholder[0] != ':') {
$placeholder = ":$placeholder";
}
// When replacing the placeholders, make sure we search for the
// exact placeholder. For example, if searching for
// ':db_placeholder_1', do not replace ':db_placeholder_11'.
$query = preg_replace('/' . preg_quote($placeholder) . '\b/', $value, $query);
}
}
}
}
return $this->dbh->PDOPrepare($query);
}
public function execute($args = array(), $options = array()) {
try {
$return = parent::execute($args, $options);
}
catch (PDOException $e) {
if (!empty($e->errorInfo[1]) && $e->errorInfo[1] === 17) {
// The schema has changed. SQLite specifies that we must resend the query.
$return = parent::execute($args, $options);
}
else {
// Rethrow the exception.
throw $e;
}
}
// In some weird cases, SQLite will prefix some column names by the name
// of the table. We post-process the data, by renaming the column names
// using the same convention as MySQL and PostgreSQL.
$rename_columns = array();
foreach ($this->columnNames as $k => $column) {
// In some SQLite versions, SELECT DISTINCT(field) will return "(field)"
// instead of "field".
if (preg_match("/^\((.*)\)$/", $column, $matches)) {
$rename_columns[$column] = $matches[1];
$this->columnNames[$k] = $matches[1];
$column = $matches[1];
}
// Remove "table." prefixes.
if (preg_match("/^.*\.(.*)$/", $column, $matches)) {
$rename_columns[$column] = $matches[1];
$this->columnNames[$k] = $matches[1];
}
}
if ($rename_columns) {
// DatabaseStatementPrefetch already extracted the first row,
// put it back into the result set.
if (isset($this->currentRow)) {
$this->data[0] = &$this->currentRow;
}
// Then rename all the columns across the result set.
foreach ($this->data as $k => $row) {
foreach ($rename_columns as $old_column => $new_column) {
$this->data[$k][$new_column] = $this->data[$k][$old_column];
unset($this->data[$k][$old_column]);
}
}
// Finally, extract the first row again.
$this->currentRow = $this->data[0];
unset($this->data[0]);
}
return $return;
}
}
/**
* @} End of "ingroup database".
*/
<?php
/**
* @file
* Query code for SQLite embedded database engine.
*/
/**
* @ingroup database
* @{
*/
/**
* SQLite specific implementation of InsertQuery.
*
* We ignore all the default fields and use the clever SQLite syntax:
* INSERT INTO table DEFAULT VALUES
* for degenerated "default only" queries.
*/
class InsertQuery_sqlite extends InsertQuery {
public function execute() {
if (!$this->preExecute()) {
return NULL;
}
if (count($this->insertFields)) {
return parent::execute();
}
else {
return $this->connection->query('INSERT INTO {' . $this->table . '} DEFAULT VALUES', array(), $this->queryOptions);
}
}
public function __toString() {
// Create a sanitized comment string to prepend to the query.
$comments = $this->connection->makeComment($this->comments);
// Produce as many generic placeholders as necessary.
$placeholders = array_fill(0, count($this->insertFields), '?');
// If we're selecting from a SelectQuery, finish building the query and
// pass it back, as any remaining options are irrelevant.
if (!empty($this->fromQuery)) {
return $comments . 'INSERT INTO {' . $this->table . '} (' . implode(', ', $this->insertFields) . ') ' . $this->fromQuery;
}
return $comments . 'INSERT INTO {' . $this->table . '} (' . implode(', ', $this->insertFields) . ') VALUES (' . implode(', ', $placeholders) . ')';
}
}
/**
* SQLite specific implementation of UpdateQuery.
*
* SQLite counts all the rows that match the conditions as modified, even if they
* will not be affected by the query. We workaround this by ensuring that
* we don't select those rows.
*
* A query like this one:
* UPDATE test SET name = 'newname' WHERE tid = 1
* will become:
* UPDATE test SET name = 'newname' WHERE tid = 1 AND name <> 'newname'
*/
class UpdateQuery_sqlite extends UpdateQuery {
/**
* Helper function that removes the fields that are already in a condition.
*
* @param $fields
* The fields.
* @param QueryConditionInterface $condition
* A database condition.
*/
protected function removeFieldsInCondition(&$fields, QueryConditionInterface $condition) {
foreach ($condition->conditions() as $child_condition) {
if ($child_condition['field'] instanceof QueryConditionInterface) {
$this->removeFieldsInCondition($fields, $child_condition['field']);
}
else {
unset($fields[$child_condition['field']]);
}
}
}
public function execute() {
if (!empty($this->queryOptions['sqlite_return_matched_rows'])) {
return parent::execute();
}
// Get the fields used in the update query, and remove those that are already
// in the condition.
$fields = $this->expressionFields + $this->fields;
$this->removeFieldsInCondition($fields, $this->condition);
// Add the inverse of the fields to the condition.
$condition = new Condition('OR');
foreach ($fields as $field => $data) {
if (is_array($data)) {
// The field is an expression.
$condition->where($field . ' <> ' . $data['expression']);
$condition->isNull($field);
}
elseif (!isset($data)) {
// The field will be set to NULL.
$condition->isNotNull($field);
}
else {
$condition->condition($field, $data, '<>');
$condition->isNull($field);
}
}
if (count($condition)) {
$condition->compile($this->connection, $this);
$this->condition->where((string) $condition, $condition->arguments());
}
return parent::execute();
}
}
/**
* SQLite specific implementation of DeleteQuery.
*
* When the WHERE is omitted from a DELETE statement and the table being deleted
* has no triggers, SQLite uses an optimization to erase the entire table content
* without having to visit each row of the table individually.
*
* Prior to SQLite 3.6.5, SQLite does not return the actual number of rows deleted
* by that optimized "truncate" optimization.
*/
class DeleteQuery_sqlite extends DeleteQuery {
public function execute() {
if (!count($this->condition)) {
$total_rows = $this->connection->query('SELECT COUNT(*) FROM {' . $this->connection->escapeTable($this->table) . '}')->fetchField();
parent::execute();
return $total_rows;
}
else {
return parent::execute();
}
}
}
/**
* SQLite specific implementation of TruncateQuery.
*
* SQLite doesn't support TRUNCATE, but a DELETE query with no condition has
* exactly the effect (it is implemented by DROPing the table).
*/
class TruncateQuery_sqlite extends TruncateQuery {
public function __toString() {
// Create a sanitized comment string to prepend to the query.
$comments = $this->connection->makeComment($this->comments);
return $comments . 'DELETE FROM {' . $this->connection->escapeTable($this->table) . '} ';
}
}
/**
* @} End of "ingroup database".
*/
This diff is collapsed.
<?php
/**
* @file
* Select builder for SQLite embedded database engine.
*/
/**
* @ingroup database
* @{
*/
/**
* SQLite specific query builder for SELECT statements.
*/
class SelectQuery_sqlite extends SelectQuery {
public function forUpdate($set = TRUE) {
// SQLite does not support FOR UPDATE so nothing to do.
return $this;
}
}
/**
* @} End of "ingroup database".
*/
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