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<?php |
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namespace Analogue\ORM\System\Proxies; |
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use ArrayAccess; |
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use Countable; |
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use JsonSerializable; |
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use IteratorAggregate; |
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use Illuminate\Contracts\Support\Jsonable; |
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use Illuminate\Contracts\Support\Arrayable; |
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use Analogue\ORM\EntityCollection; |
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/** |
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* Class CollectionProxy |
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* |
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* @mixin EntityCollection |
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*/ |
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class CollectionProxy extends Proxy implements ArrayAccess, Arrayable, Countable, IteratorAggregate, Jsonable, JsonSerializable |
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{ |
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/** |
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* Underlying Lazyloaded collection |
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* @var EntityCollection |
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*/ |
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protected $loadedCollection; |
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/** |
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* Added Items Collection |
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* @var EntityCollection |
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*/ |
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protected $addedItems; |
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/** |
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* @param mixed $parentEntity |
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* @param string $relation relationship method handled by the proxy. |
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*/ |
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public function __construct($parentEntity, $relation) |
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{ |
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$this->addedItems = new EntityCollection; |
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parent::__construct($parentEntity, $relation); |
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} |
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/** |
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* Add an entity to the proxy collection, weither it's loaded or not |
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* |
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* @param mixed $entity |
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* @return self|void |
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*/ |
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public function add($entity) |
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{ |
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if ($this->isLoaded()) { |
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return $this->loadedCollection->add($entity); |
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} else { |
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$this->addedItems->add($entity); |
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} |
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} |
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/** |
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* Check if Proxy collection has been lazy-loaded |
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* |
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* @return boolean |
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*/ |
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public function isLoaded() |
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{ |
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return !is_null($this->loadedCollection); |
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} |
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/** |
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* Return the underlying collection |
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* |
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* @return EntityCollection |
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*/ |
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public function getUnderlyingCollection() |
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{ |
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return $this->loadedCollection; |
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} |
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/** |
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* Return Items that has been added prior to lazy-loading |
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* |
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* @return EntityCollection |
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*/ |
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public function getAddedItems() |
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{ |
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return $this->addedItems; |
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} |
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/** |
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* Load the underlying relation |
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* |
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* @return void |
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*/ |
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protected function loadOnce() |
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{ |
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if ($this->isLoaded()) { |
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return; |
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} |
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$this->loadedCollection = $this->load(); |
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foreach ($this->addedItems as $entity) { |
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$this->loadedCollection->add($entity); |
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} |
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$this->addedItems = null; |
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} |
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/** |
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* Count the number of items in the collection. |
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* |
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* @return int |
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*/ |
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public function count() |
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{ |
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$this->loadOnce(); |
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return $this->getUnderlyingCollection()->count(); |
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} |
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/** |
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* Determine if an item exists at an offset. |
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* |
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* @param mixed $key |
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* @return bool |
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*/ |
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public function offsetExists($key) |
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{ |
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$this->loadOnce(); |
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return $this->getUnderlyingCollection()->offsetExists($key); |
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} |
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/** |
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* Get an item at a given offset. |
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* |
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* @param mixed $key |
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* @return mixed |
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*/ |
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public function offsetGet($key) |
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{ |
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$this->loadOnce(); |
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return $this->getUnderlyingCollection()->offsetGet($key); |
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} |
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/** |
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* Set the item at a given offset. |
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* |
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* @param mixed $key |
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* @param mixed $value |
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*/ |
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public function offsetSet($key, $value) |
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{ |
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$this->loadOnce(); |
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$this->getUnderlyingCollection()->offsetSet($key, $value); |
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} |
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/** |
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* Unset the item at a given offset. |
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* |
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* @param string $key |
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*/ |
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public function offsetUnset($key) |
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{ |
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$this->loadOnce(); |
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$this->getUnderlyingCollection()->offsetUnset($key); |
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} |
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/** |
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* Get the collection of items as a plain array. |
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* |
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* @return array |
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*/ |
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public function toArray() |
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{ |
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$this->loadOnce(); |
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return $this->getUnderlyingCollection()->toArray(); |
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} |
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/** |
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* Convert the object into something JSON serializable. |
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* |
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* @return array |
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*/ |
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public function jsonSerialize() |
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{ |
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$this->loadOnce(); |
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return $this->getUnderlyingCollection()->jsonSerialize(); |
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} |
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/** |
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* Get the collection of items as JSON. |
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* |
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* @param int $options |
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* @return string |
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*/ |
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public function toJson($options = 0) |
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{ |
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$this->loadOnce(); |
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return $this->getUnderlyingCollection()->toJson(); |
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} |
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/** |
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* Get an iterator for the items. |
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* |
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* @return \ArrayIterator |
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*/ |
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public function getIterator() |
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{ |
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$this->loadOnce(); |
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return $this->getUnderlyingCollection()->getIterator(); |
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} |
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/** |
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* @param $method |
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* @param $parameters |
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* @return mixed |
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*/ |
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public function __call($method, $parameters) |
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{ |
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if (!$this->isLoaded()) { |
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$this->loadOnce(); |
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} |
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return call_user_func_array([$this->loadedCollection, $method], $parameters); |
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} |
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} |
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analogueorm /
analogue
