Issue #3271256 by akalam, drunken monkey: Fixed infinite loop when indexing external entities.

Search API 1.x, dev (xxxx-xx-xx):

---------------------------------

- #3271256 by akalam, drunken monkey: Fixed infinite loop when indexing external

  entities.

- #3354906 by ericchew, drunken monkey, miedward: Fixed regression in Views

  argument plugins (date and All Terms).

- #3332036 by drunken monkey, Chris64: Fixed too narrow Drush version constraint

use Drupal\Core\TypedData\ComplexDataDefinitionInterface;

use Drupal\Core\TypedData\ComplexDataInterface;

use Drupal\Core\TypedData\TypedDataManagerInterface;

use Drupal\external_entities\Entity\Query\External\Query as ExternalEntitiesQuery;

use Drupal\field\FieldConfigInterface;

use Drupal\field\FieldStorageConfigInterface;

use Drupal\search_api\Datasource\DatasourcePluginBase;

        // We only handle the case of picking up from where the last page left

        // off. (This will cause an infinite loop if anyone ever wants to index

        // Search API tasks in an index, so check for that to be on the safe

        // side.)

        // side. Also, the external_entities module doesn't reliably support

        // conditions on entity queries, so disable this functionality in that

        // case, too.)

        if (isset($last_ids[$context_key])

            && $last_ids[$context_key]['page'] == ($page - 1)

            && $this->getEntityTypeId() !== 'search_api_task') {

            && $this->getEntityTypeId() !== 'search_api_task'

            && !($select instanceof ExternalEntitiesQuery)) {

          $select->condition($entity_id, $last_ids[$context_key]['last_id'], '>');

          $offset = 0;

        }