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<?php |
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/** |
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* @package Spark |
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* @author Flipbox Factory <[email protected]> |
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* @copyright 2010-2016 Flipbox Digital Limited |
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* @license https://github.com/FlipboxFactory/Craft3-Spark/blob/master/LICENSE |
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* @link https://github.com/FlipboxFactory/Craft3-Spark |
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* @since Class available since Release 1.1.0 |
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*/ |
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namespace flipbox\spark\services; |
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use Craft; |
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use craft\base\Element; |
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use craft\base\ElementInterface; |
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use craft\elements\db\ElementQueryInterface; |
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use flipbox\spark\exceptions\ElementNotFoundException; |
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use flipbox\spark\exceptions\InvalidElementException; |
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use flipbox\spark\helpers\ElementHelper; |
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use flipbox\spark\helpers\QueryHelper; |
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use flipbox\spark\helpers\SiteHelper; |
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use yii\base\Component as BaseComponent; |
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abstract class ElementAccessor extends BaseComponent |
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{ |
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/** |
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* @var [ElementInterface[]] |
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*/ |
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protected $_cacheAll; |
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/** |
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* @var [ElementInterface[]] |
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*/ |
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protected $_cacheById = []; |
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/** |
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* The element instance that this class interacts with |
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*/ |
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const ELEMENT_CLASS_INSTANCE = ElementInterface::class; |
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/** |
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* The element this class interacts with |
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*/ |
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const ELEMENT_CLASS = ''; |
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/******************************************* |
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* CREATE |
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*******************************************/ |
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/** |
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* @return string |
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*/ |
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public function getElementClass() |
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{ |
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return static::ELEMENT_CLASS; |
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} |
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/** |
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* @param array $config |
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* @param string $scenario |
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* @return Element|ElementInterface |
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*/ |
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public function create(array $config = [], $scenario = ElementHelper::DEFAULT_SCENARIO) |
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{ |
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// Set the class the element should be |
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$config['class'] = static::ELEMENT_CLASS; |
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// Create new model |
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return ElementHelper::create( |
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$config, |
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static::ELEMENT_CLASS_INSTANCE, |
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$scenario |
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); |
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} |
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/** |
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* @param $identifier |
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* @param int|null $siteId |
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* @return Element|ElementInterface|null |
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*/ |
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public function find($identifier, int $siteId = null) |
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{ |
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if ($identifier instanceof self::ELEMENT_CLASS_INSTANCE) { |
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$this->addToCache($identifier); |
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return $identifier; |
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} elseif (is_numeric($identifier)) { |
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return $this->findById($identifier, $siteId); |
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} elseif (is_array($identifier)) { |
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return $this->getQuery($identifier) |
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->siteId($siteId) |
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->one(); |
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} |
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return null; |
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} |
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/** |
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* @param $id |
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* @param int|null $siteId |
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* @return Element|ElementInterface|null |
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*/ |
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public function findById($id, int $siteId = null) |
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{ |
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// Check cache |
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if (!$element = $this->findCacheById($id, $siteId)) { |
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// Find new element |
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if ($element = $this->freshFindById($id, $siteId)) { |
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// Cache it |
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$this->addToCache($element); |
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} else { |
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// Cache nothing |
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$this->_cacheById[$id] = $element; |
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} |
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} |
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return $element; |
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} |
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/******************************************* |
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* GET |
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*******************************************/ |
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/** |
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* @param $identifier |
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* @param int|null $siteId |
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* @return Element|ElementInterface |
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* @throws InvalidElementException |
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*/ |
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public function get($identifier, int $siteId = null) |
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{ |
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// Find |
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if (!$elemeny = $this->find($identifier, $siteId)) { |
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$this->notFoundException(); |
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} |
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return $elemeny; |
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} |
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/** |
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* @param $id |
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* @param int|null $siteId |
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* @return Element|ElementInterface |
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* @throws ElementNotFoundException |
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*/ |
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public function getById($id, int $siteId = null) |
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{ |
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// Find by ID |
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if (!$element = $this->findById($id, $siteId)) { |
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$this->notFoundByIdException($id); |
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} |
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return $element; |
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} |
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/******************************************* |
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* FRESH FIND |
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*******************************************/ |
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/** |
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* @param $id |
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* @param int|null $siteId |
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* @return Element|ElementInterface|null |
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*/ |
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public function freshFindById($id, int $siteId = null) |
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{ |
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return Craft::$app->getElements()->getElementById($id, static::ELEMENT_CLASS, $siteId); |
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} |
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/** |
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* @param $id |
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* @param int|null $siteId |
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* @return Element|ElementInterface |
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* @throws ElementNotFoundException |
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*/ |
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public function freshGetById($id, int $siteId = null) |
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{ |
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if (!$element = $this->freshFindById($id, $siteId)) { |
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$this->notFoundByIdException($id); |
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} |
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return $element; |
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} |
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/******************************************* |
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* QUERY |
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*******************************************/ |
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/** |
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* Get query |
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* |
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* @param $criteria |
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* @return ElementQueryInterface |
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*/ |
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public function getQuery($criteria = []) |
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{ |
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/** @var Element $elementClass */ |
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$elementClass = static::ELEMENT_CLASS; |
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/** @var ElementQueryInterface $query */ |
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$query = $elementClass::find(); |
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// Configure it |
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QueryHelper::configure( |
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$query, |
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$criteria |
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); |
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return $query; |
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} |
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/******************************************* |
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* CACHE |
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*******************************************/ |
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/** |
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* @param $identifier |
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* @param int|null $siteId |
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* @return Element|ElementInterface|null |
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*/ |
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public function findCache($identifier, int $siteId = null) |
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{ |
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if (is_numeric($identifier)) { |
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return $this->findCacheById($identifier, $siteId); |
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} |
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return null; |
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} |
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/** |
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* @param ElementInterface $element |
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* @return $this |
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*/ |
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public function addToCache(ElementInterface $element) |
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{ |
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$this->cacheById($element); |
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return $this; |
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} |
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/** |
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* Find an existing cache by ID |
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* |
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* @param $id |
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* @param int|null $siteId |
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* @return Element|ElementInterface|null |
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*/ |
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public function findCacheById($id, int $siteId = null) |
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{ |
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// Resolve siteId |
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$siteId = SiteHelper::resolveSiteId($siteId); |
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// Check if already in addToCache |
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if ($this->isCachedById($id, $siteId)) { |
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return $this->_cacheById[$siteId][$id]; |
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} |
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return null; |
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} |
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/** |
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* Identify whether in cached by ID |
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* |
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* @param $id |
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* @param int|null $siteId |
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* @return bool |
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*/ |
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protected function isCachedById($id, int $siteId = null) |
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{ |
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// Resolve siteId |
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$siteId = SiteHelper::resolveSiteId($siteId); |
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if (!isset($this->_cacheById[$siteId])) { |
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$this->_cacheById[$siteId] = []; |
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} |
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return array_key_exists($id, $this->_cacheById[$siteId]); |
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} |
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/** |
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* @param ElementInterface $element |
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* @return $this |
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*/ |
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protected function cacheById(ElementInterface $element) |
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{ |
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/** @var Element $element */ |
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$id = $element->id; |
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$siteId = $element->siteId; |
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// Check if already in cache |
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if (!$this->isCachedById($id, $siteId)) { |
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// Cache it |
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$this->_cacheById[$siteId][$id] = $element; |
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} |
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return $this; |
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} |
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/******************************************* |
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* EXCEPTIONS |
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*******************************************/ |
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/** |
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* @throws ElementNotFoundException |
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*/ |
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protected function notFoundException() |
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{ |
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throw new ElementNotFoundException( |
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sprintf( |
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"Element does not exist." |
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) |
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); |
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} |
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/** |
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* @param null $id |
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* @throws ElementNotFoundException |
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*/ |
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protected function notFoundByIdException($id = null) |
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{ |
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throw new ElementNotFoundException( |
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sprintf( |
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'Element does not exist with the id "%s".', |
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(string)$id |
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) |
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); |
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} |
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} |
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