public function ContentEntityStorageBase::loadMultipleRevisions in Drupal 9

Same name and namespace in other branches

1. 8 core/lib/Drupal/Core/Entity/ContentEntityStorageBase.php \Drupal\Core\Entity\ContentEntityStorageBase::loadMultipleRevisions()

Loads multiple entity revisions.

Parameters

array $revision_ids: An array of revision IDs to load.

Return value

\Drupal\Core\Entity\RevisionableInterface[] An array of entity revisions keyed by their revision ID, or an empty array if none found.

Overrides RevisionableStorageInterface::loadMultipleRevisions

1 call to ContentEntityStorageBase::loadMultipleRevisions()

ContentEntityStorageBase::loadRevision in core/lib/Drupal/Core/Entity/ContentEntityStorageBase.php

Load a specific entity revision.

1 method overrides ContentEntityStorageBase::loadMultipleRevisions()

ContentEntityNullStorage::loadMultipleRevisions in core/lib/Drupal/Core/Entity/ContentEntityNullStorage.php

Loads multiple entity revisions.

File

core/lib/Drupal/Core/Entity/ContentEntityStorageBase.php, line 548

Class

ContentEntityStorageBase

Base class for content entity storage handlers.

Namespace

Drupal\Core\Entity

Code

public function loadMultipleRevisions(array $revision_ids) {
  $revisions = $this
    ->doLoadMultipleRevisionsFieldItems($revision_ids);

  // The hooks are executed with an array of entities keyed by the entity ID.
  // As we could load multiple revisions for the same entity ID at once we
  // have to build groups of entities where the same entity ID is present only
  // once.
  $entity_groups = [];
  $entity_group_mapping = [];
  foreach ($revisions as $revision) {
    $entity_id = $revision
      ->id();
    $entity_group_key = isset($entity_group_mapping[$entity_id]) ? $entity_group_mapping[$entity_id] + 1 : 0;
    $entity_group_mapping[$entity_id] = $entity_group_key;
    $entity_groups[$entity_group_key][$entity_id] = $revision;
  }

  // Invoke the entity hooks for each group.
  foreach ($entity_groups as $entities) {
    $this
      ->invokeStorageLoadHook($entities);
    $this
      ->postLoad($entities);
  }

  // Ensure that the returned array is ordered the same as the original
  // $ids array if this was passed in and remove any invalid IDs.
  if ($revision_ids) {
    $flipped_ids = array_intersect_key(array_flip($revision_ids), $revisions);
    $revisions = array_replace($flipped_ids, $revisions);
  }
  return $revisions;
}