protected function applyRevision(Entity &$entity, $revision_payload)
{
global $user;
// Preserve the original entity.
$original_entity = clone $entity;
// Apply changes to the entity.
$entity->definition = (object) array_replace_recursive((array) $entity->definition, (array) $revision_payload['additions']);
// Apply deletions to the entity.
$deletions_definition = (array) $entity->definition;
$keys_to_delete = array();
$this->applyRevisionDeletions($deletions_definition, $revision_payload['deletions'], $keys_to_delete);
$entity->definition = (object) $deletions_definition;
// Run the beforeDependencies preparer.
$preparer_registry = new PreparerRegistry();
$preparer_registry->beforeDependencies($entity);
// Revert references.
$unresolver = new Unresolver($entity);
$entity->definition = $unresolver->unresolvedDefinition();
// Check to see if there were any errors reverting references.
if ($errors = $unresolver->errors()) {
$this->transaction->addErrors($errors);
return false;
// Stop processing this entity if there were errors.
}
// Unset the node VID and the user ID.
$entity->definition->revision = true;
if (isset($entity->definition->revision_uid)) {
$user->uid = $entity->definition->revision_uid;
} elseif (isset($entity->definition->uid)) {
$user->uid = $entity->definition->uid;
}
// Get the old stuff for the node.
$old_revision_information = array('uid' => $user->uid, 'vuuid' => $entity->vuuid());
// Set unchanging properties to the node that was sent.
$unchanging_properties = publisher_get_unchanging_properties($entity->type());
foreach ($unchanging_properties as $property) {
if (!isset($revision_payload['additions'][$property])) {
continue;
}
$entity->definition->{$property} = $revision_payload['additions'][$property];
}
// Get the revision table for the entity.
$entity_info = entity_get_info($entity->type());
if (array_key_exists('revision table', $entity_info)) {
$revision_table = $entity_info['revision table'];
$revision_key = $entity_info['entity keys']['revision'];
$revision_uuid_key = $entity_info['entity keys']['revision uuid'];
}
// Update the VID to an existing revision.
if ($entity->supportsRevisions() && isset($revision_key)) {
$this->setEntityRevisionID($entity->vuuid(), $entity);
}
// Run the preparers beforeSave.
$preparer_registry->beforeSave($entity);
// Run the entity handlers with the metadata.
foreach (EntityHandlerRegistry::getEntityHandlers($entity) as $handler) {
if (!$handler instanceof EntityHandlerBase) {
continue;
}
$handler->entity =& $entity;
$handler->original_entity = $original_entity;
$handler->unhandleRevision($this->getEntityFromMetadata($entity->uuid()));
}
// Save the entity.
try {
$entity->save();
} catch (\Exception $ex) {
// ...and try to catch any exceptions thrown by this (sometimes, the exceptions still aren't caught).
$this->transaction->addError($ex);
return false;
}
if (isset($revision_table) && isset($revision_key)) {
// Reset the UID and VUUID for the revision.
$cloned_definition = clone $entity->definition;
$cloned_definition->uid = $old_revision_information['uid'];
$cloned_definition->{$revision_uuid_key} = $old_revision_information['vuuid'];
drupal_write_record($revision_table, $cloned_definition, $revision_key);
// Delete duplicate revisions that no longer apply.
$this->checkForDuplicateRevisions($cloned_definition, $entity);
// Reset the revision cache in the entity class.
Entity::getLatestRevisionID($entity->id(), $entity->type(), true);
}
// Run the preparers afterSave events.
$preparer_registry->afterSave($entity);
return true;
}
public function diff()
{
// Get the preparer registry.
$preparer_registry = new PreparerRegistry();
if (!$this->revisions_table) {
// Prepare the entity.
$preparer_registry->beforeSend($this->entity);
$resolver = new Resolver($this->entity);
return array($this->entity->vuuid() => array('additions' => $resolver->resolvedDefinition(), 'deletions' => array()));
}
// Get the revisions in between the two mentioned. If the old is blank, get the entire history.
$revision_ids = $this->getRevisionHistory($this->old_revision_id, $this->new_revision_id);
if ($revision_ids === false) {
return false;
}
$payload = array();
$before_id = $this->old_revision_id ? $this->old_revision_id : -1;
foreach ($revision_ids as $current_id) {
// Load the entities.
if ($before_id === -1) {
$old_entity = null;
} else {
$old_entity = clone $this->entity;
$old_entity->setRevision($before_id);
}
$new_entity = clone $this->entity;
$new_entity->setRevision($current_id);
// Pass the entity through the preparers to add any additional field metadata.
if ($old_entity !== null) {
$preparer_registry->beforeSend($old_entity);
}
$preparer_registry->beforeSend($new_entity);
$payload[$current_id . '|' . $new_entity->vuuid()] = $this->singleDiff($old_entity, $new_entity);
// Update the before ID.
$before_id = $current_id;
}
return $payload;
}