ParentEntityRevisionUpdater.php in Entity Reference Hierarchy 8.2

Namespace

Drupal\entity_hierarchy\Storage

File

src/Storage/ParentEntityRevisionUpdater.php

<?php

namespace Drupal\entity_hierarchy\Storage;

use Drupal\Core\Entity\ContentEntityInterface;

/**
 * Defines a class for handling a parent entity is updated to a new revision.
 */
class ParentEntityRevisionUpdater extends ParentEntityReactionBase {

  /**
   * Move children from old revision to new revision.
   *
   * @param \Drupal\Core\Entity\ContentEntityInterface $oldRevision
   *   Old revision.
   * @param \Drupal\Core\Entity\ContentEntityInterface $newRevision
   *   New revision.
   */
  public function moveChildren(ContentEntityInterface $oldRevision, ContentEntityInterface $newRevision) {
    if (!$newRevision
      ->isDefaultRevision()) {

      // We don't move children to a non-default revision.
      return;
    }
    if ($newRevision
      ->getRevisionId() == $oldRevision
      ->getRevisionId()) {

      // We don't move anything if the revision isn't changing.
      return;
    }
    if (!($fields = $this->parentCandidate
      ->getCandidateFields($newRevision))) {

      // There are no fields that could point to this entity.
      return;
    }
    $oldNodeKey = $this->nodeKeyFactory
      ->fromEntity($oldRevision);
    $newNodeKey = $this->nodeKeyFactory
      ->fromEntity($newRevision);
    foreach ($fields as $field_name) {
      $this
        ->lockTree($field_name, $newRevision
        ->getEntityTypeId());

      /** @var \Pnx\NestedSet\NestedSetInterface $storage */
      $storage = $this->nestedSetStorageFactory
        ->get($field_name, $newRevision
        ->getEntityTypeId());
      if (!($newParent = $storage
        ->getNode($newNodeKey))) {
        $newParent = $storage
          ->addRootNode($newNodeKey);
      }
      if ($storage
        ->findChildren($oldNodeKey)) {
        $storage
          ->adoptChildren($storage
          ->getNode($oldNodeKey), $newParent);
      }
      $this
        ->releaseLock($field_name, $newRevision
        ->getEntityTypeId());
    }
  }

}

Classes

Name	Description
ParentEntityRevisionUpdater	Defines a class for handling a parent entity is updated to a new revision.