public function resolveDependencies($recurse = true, $subset = false, $child = false, $subtype = false)
{
// Check to see if the resolved definition already exists in the cached list.
$cached_resolutions =& drupal_static('publisher_cached_resolutions', array());
$key = $this->base_entity->uuid() . '|' . $this->base_entity->type();
if ($this->base_entity->supportsRevisions()) {
$key .= '|' . $this->base_entity->vuuid();
}
$key .= $recurse ? '|recurse' : '';
if (array_key_exists($key, $cached_resolutions) && $child === false && $subset === false) {
$this->dependencies = array_replace_recursive($this->dependencies, $cached_resolutions[$key]['dependencies']);
$this->relationships = array_merge($this->relationships, $cached_resolutions[$key]['relationships']);
$this->resolved_definition = $cached_resolutions[$key]['resolved_definition'];
return;
}
if (count($cached_resolutions) > 200) {
// For memory consumption purposes.
drupal_static_reset('publisher_cached_resolutions');
}
// Create a clone of the definition so we don't muck up the entity cache.
$this->resolved_definition = $subset !== false ? $subset : clone $this->entity->definition;
if (!is_object($this->resolved_definition)) {
$this->resolved_definition = (object) $this->resolved_definition;
}
// Generate the list of handlers for each of the fields.
$handlers = DefinitionHandlerRegistry::getFieldHandlers($this->entity, $this->resolved_definition, $subtype);
foreach ($handlers as $field_name => $handler) {
if (!isset($this->resolved_definition->{$field_name})) {
continue;
}
foreach ($handler['handlers'] as $single_handler) {
if (!$single_handler instanceof DefinitionHandlerBase) {
continue;
}
try {
$single_handler->dependencies =& $this->dependencies;
$single_handler->entity =& $this->entity;
$single_handler->original_entity = $this->base_entity;
if (property_exists($single_handler, 'relationships')) {
$single_handler->relationships =& $this->relationships;
}
$single_handler->handleField($this->entity->type(), $handler['type'], $field_name, $this->resolved_definition->{$field_name});
} catch (\Exception $ex) {
$message = t('Error processing field "@fieldName" - "@message"', array('@fieldName' => $field_name, '@message' => $ex->getMessage()));
\watchdog('publisher', $message, array(), WATCHDOG_WARNING);
$this->errors[] = $ex;
}
}
}
// Now, recursion.
if ($recurse) {
foreach ($this->dependencies as $identifier => $dependency) {
// If the dependency has already been handled, skip it.
if (array_key_exists($identifier, self::$handled_dependencies)) {
continue;
}
// Add the dependency to the list of handled ones.
self::$handled_dependencies[$identifier] = $dependency;
// Load the entity and get its dependencies.
$entity = Entity::loadByUUID($dependency['uuid'], $dependency['entity_type']);
// If for some reason the entity fails, we need to just skip it.
if (!$entity) {
continue;
}
// Make sure the entity is not the current entity to prevent infinite loop.
if ($entity->uuid() == $this->entity->uuid()) {
continue;
}
$resolver = new self($entity, false, $this->dependencies);
$resolver->relationships =& $this->relationships;
$resolver->metadata =& $this->metadata;
$resolver->resolveDependencies(true, false, true);
$this->dependencies = $resolver->dependencies();
}
}
// Add a dependency for the entity itself if it doesn't already exist.
if (!array_key_exists($this->base_entity->uuid(), $this->dependencies) || $this->base_entity->supportsRevisions() && !empty($this->dependencies[$this->base_entity->uuid()]['original_revision']) && $this->base_entity->revision() > $this->dependencies[$this->base_entity->uuid()]['original_revision']) {
$this->dependencies[$this->base_entity->uuid()] = HandlerBase::createReferenceDefinition($this->base_entity);
}
// Pass the entity through the entity handlers.
if (!array_key_exists($this->base_entity->uuid(), $this->metadata) && $recurse) {
$this->metadata[$this->base_entity->uuid()] = array();
foreach (EntityHandlerRegistry::getEntityHandlers($this->base_entity) as $handler) {
if (!$handler instanceof EntityHandlerBase) {
continue;
}
$handler->entity =& $this->entity;
$handler->original_entity = $this->base_entity;
$handler->dependencies =& $this->dependencies;
$handler->handleEntity($this->metadata[$this->base_entity->uuid()]);
}
}
// Update the cache record.
$cached_resolutions[$key] = array('dependencies' => $this->dependencies, 'relationships' => $this->relationships, 'resolved_definition' => $this->resolved_definition);
if (!$child) {
$dependency_dependencies =& drupal_static('publisher_dependency_dependencies', array());
foreach ($dependency_dependencies as $source => $dependencies) {
if (array_key_exists($source, $this->dependencies)) {
if (!array_key_exists('dependencies', $this->dependencies[$source]) || !is_array($this->dependencies[$source]['dependencies'])) {
$this->dependencies[$source]['dependencies'] = array();
}
$this->dependencies[$source]['dependencies'] = array_replace_recursive($this->dependencies[$source]['dependencies'], $dependencies);
$this->dependencies[$source]['dependencies'] = array_unique($this->dependencies[$source]['dependencies']);
}
}
// Update the relationships.
$this->updateRelationships();
// Loop through all the dependencies and perform cleanup tasks.
foreach ($this->dependencies as $dependency_key => &$dependency) {
// Cleanup the sources.
if (array_key_exists('sources', $dependency) && is_array($dependency['sources'])) {
$dependency['sources'] = array_unique($dependency['sources']);
}
}
// Loop through again for the required stuff.
foreach ($this->dependencies as $dependency_key => &$dependency) {
// Create the 'required' key.
if (array_key_exists('has_relationship', $dependency) && $dependency['has_relationship']) {
$dependency['required'] = false;
continue;
}
$this->dependencies[$dependency_key]['required'] = true;
if (array_key_exists('sources', $this->dependencies[$dependency_key]) && is_array($this->dependencies[$dependency_key]['sources']) && count($this->dependencies[$dependency_key]['sources']) > 0) {
// Mark dependencies as not required only if all of their parent paths
// are marked as having relationships.
$sources = array();
foreach ($this->dependencies[$dependency_key]['sources'] as $source_uuid) {
$sources[] = $this->dependencies[$source_uuid];
}
$paths = $this->getAllParentTrails($sources);
$paths_with_notrequired = 0;
foreach ($paths as $path) {
foreach ($path as $item) {
if (!array_key_exists('required', $this->dependencies[$item]) || !$this->dependencies[$item]['required']) {
$paths_with_notrequired++;
break;
}
}
}
if ($paths_with_notrequired == count($paths)) {
$this->dependencies[$dependency_key]['required'] = false;
}
} else {
// If the dependency doesn't have any sources, it is not
// required.
$this->dependencies[$dependency_key]['required'] = false;
}
}
// Now, loop through the dependencies again and fill in their
// 'required_if' values. If a dependency is marked as not required,
// go through its trails and find the lowest parent that is marked
// as having a relationship and add it to the 'required_if' list
// if it isn't already there.
foreach ($this->dependencies as $dependency_key => &$dependency) {
$dependency['required_if'] = array();
// If the dependency is marked as required already, is a relationship,
// or doesn't have any sources, skip it.
if ($dependency['required']) {
continue;
}
if (!array_key_exists('sources', $dependency) || !is_array($dependency['sources'])) {
continue;
}
// Loop through its parent trails to find the non-required items.
$required_if = array();
$sources = array();
foreach ($dependency['sources'] as $source_uuid) {
// If the source UUID is the owner of the relationship, don't add it.
$skip = false;
foreach ($this->relationships as $relationship) {
if ($relationship['source_uuid'] == $source_uuid && $relationship['destination_uuid'] == $dependency['uuid']) {
$skip = true;
break;
}
}
if ($skip) {
continue;
}
$sources[] = $this->dependencies[$source_uuid];
}
$paths = $this->getAllParentTrails($sources);
foreach ($paths as $path) {
$found = false;
foreach ($path as $index => $item) {
if (array_key_exists('has_relationship', $this->dependencies[$item]) && $this->dependencies[$item]['has_relationship']) {
$found = true;
$required_if[] = array_slice($path, 0, $index + 1);
break;
}
}
if (!$found) {
if (count($path) === 1) {
$required_if[] = $path;
} else {
for ($i = 1; $i < count($path); $i++) {
$required_if[] = array_slice($path, 0, $i);
}
}
}
}
// Add it to the dependency.
$required_if_entities = array();
foreach ($required_if as $path) {
$required_if_entities[] = end($path);
}
$dependency['required_if'] = array_unique($required_if_entities);
}
// Reset the dependency dependencies cache.
drupal_static_reset('publisher_dependency_dependencies');
// Finally, perform the topological sort on the dependencies.
$this->topologicalSortDependencies();
}
}
/**
* Given an entity reference definition, gets the original entity ID.
*
* @param array $definition The entity reference definition.
* @param Entity $current_entity The current entity (optional).
*
* @return bool|Entity|null
* @throws InvalidReferenceDefinitionException
*/
public static function entityFromReferenceDefinition(array $definition, Entity $current_entity = null)
{
// Verify the reference definition.
if (($message = HandlerBase::verifyReferenceDefinition($definition)) !== true) {
throw new InvalidReferenceDefinitionException($message);
}
// Make sure the current entity ID and the reference definition ID are different.
if ($current_entity && $definition['uuid'] == $current_entity->uuid()) {
return null;
}
// Try to load the entity.
$entity = Entity::loadByUUID($definition['uuid'], $definition['entity_type']);
if (!$entity) {
// Check to see if there is a relationship for the entity.
if ($current_entity) {
$count = db_select('publisher_pending_relationships', 'r')->condition('source_type', $current_entity->type())->condition('source_uuid', $current_entity->uuid())->condition('destination_type', $definition['entity_type'])->condition('destination_uuid', $definition['uuid'])->countQuery()->execute()->fetchField();
if ($count > 0) {
return false;
}
}
throw new InvalidReferenceDefinitionException(t('The @type @uuid does not exist.', array('@type' => $definition['entity_type'], '@uuid' => $definition['uuid'])));
}
return $entity;
}