/**
* Retrieve an entity by its identifier.
*
* @param mixed $id
* @return mixed
* @throws \Exception
*/
public function find($id)
{
if ($entity = $this->manager->getById($id, $this->metadata->getClass())) {
return $entity;
}
return $this->where([$this->metadata->getIdentifier() => $id])->first();
}
/**
* Map targets to entities
*
* @param array $entities
* @param array $targets
*/
protected function map($entities, $targets)
{
$identifier = $this->targetMetadata->getIdentifier();
foreach ($targets as $target) {
$id = $this->targetMetadata->getValue($target, $this->keyTo, true);
foreach ($entities as $entity) {
if ($id == $this->metadata->getValue($entity, $this->keyFrom, true)) {
$value = $this->metadata->getValue($entity, $this->name);
if (is_array($value)) {
$value[$this->targetMetadata->getValue($target, $identifier)] = $target;
} else {
$value = $target;
}
$this->metadata->setValue($entity, $this->name, $value);
}
}
}
}
/**
* Loads an entity or creates a new one if it does not already exist.
*
* @param Metadata $metadata
* @param array $data
* @return object
*/
public function load(Metadata $metadata, array $data)
{
$id = $data[$metadata->getIdentifier()];
$class = $metadata->getClass();
if (isset($this->entities[$class][$id])) {
$entity = $this->entities[$class][$id];
} else {
$entity = $metadata->newInstance();
$metadata->setValues($entity, $data, true, true);
$this->identifiers[spl_object_hash($entity)] = $id;
$this->entities[$class][$id] = $entity;
}
$this->manager->dispatchEvent(Events::postLoad, $entity, $metadata);
return $entity;
}
/**
* Dispatches an event to all registered listeners.
*
* @param string $name
* @param mixed $entity
* @param Metadata $metadata
* @return bool
*/
public function dispatchEvent($name, $entity, Metadata $metadata)
{
$prefix = $metadata->getEventPrefix();
$event = new $this->eventClass($entity, $metadata, $this);
if ($events = $metadata->getEvents() and isset($events[$name])) {
foreach ($events[$name] as $callback) {
call_user_func_array([$entity, $callback], [$event]);
}
}
$this->connection->getEventDispatcher()->dispatch(($prefix ? $prefix . '.' : '') . $name, $event);
}
