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<?php |
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/** |
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* @copyright Copyright (c) Flipbox Digital Limited |
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* @license https://github.com/flipbox/spark/blob/master/LICENSE |
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* @link https://github.com/flipbox/spark |
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*/ |
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namespace flipbox\spark\services\traits; |
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use flipbox\spark\exceptions\ObjectNotFoundException; |
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use flipbox\spark\exceptions\RecordNotFoundException; |
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use flipbox\spark\objects\ObjectWithId; |
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use flipbox\spark\records\Record; |
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use flipbox\spark\records\RecordWithId; |
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use yii\base\Object as BaseObject; |
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/** |
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* @author Flipbox Factory <[email protected]> |
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* @since 2.0.0 |
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* |
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* @method RecordWithId|null findRecordByCondition($condition, string $toScenario = null) |
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*/ |
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trait ObjectById |
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{ |
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use Object; |
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/** |
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* @var BaseObject[] |
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*/ |
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protected $cacheById = []; |
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/** |
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* @param Record $record |
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* @param string|null $toScenario |
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* @return BaseObject |
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*/ |
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abstract protected function findByRecord(Record $record, string $toScenario = null): BaseObject; |
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/******************************************* |
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* FIND/GET BY ID |
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*******************************************/ |
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/** |
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* @param int $id |
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* @param string|null $toScenario |
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* @return BaseObject|null |
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*/ |
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public function findById(int $id, string $toScenario = null) |
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{ |
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// Check cache |
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if (!$object = $this->findCacheById($id)) { |
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// Find record in db |
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if ($record = $this->findRecordByCondition( |
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['id' => $id] |
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) |
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) { |
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// Perhaps in cache |
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$object = $this->findByRecord($record, $toScenario); |
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} else { |
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$this->cacheById[$id] = null; |
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return null; |
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} |
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} |
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return $object; |
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} |
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/** |
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* @param int $id |
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* @param string|null $toScenario |
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* @return BaseObject |
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* @throws ObjectNotFoundException |
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*/ |
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public function getById(int $id, string $toScenario = null): BaseObject |
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{ |
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// Find by ID |
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if (!$object = $this->findById($id, $toScenario)) { |
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$this->notFoundByIdException($id); |
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} |
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return $object; |
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} |
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/** |
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* @param int $id |
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* @param string|null $toScenario |
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* @return BaseObject|null |
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*/ |
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public function freshFindById(int $id, string $toScenario = null) |
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{ |
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// Find record in db |
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if (!$record = $this->findRecordById($id)) { |
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return null; |
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} |
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return $this->createFromRecord($record, $toScenario); |
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} |
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/** |
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* @param int $id |
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* @param string|null $toScenario |
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* @return BaseObject |
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* @throws ObjectNotFoundException |
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*/ |
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public function freshGetById(int $id, string $toScenario = null): BaseObject |
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{ |
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if (!$object = $this->freshFindById($id, $toScenario)) { |
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$this->notFoundByIdException($id); |
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} |
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return $object; |
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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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* Find an existing cache by ID |
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* |
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* @param $id |
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* @return BaseObject|null |
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*/ |
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public function findCacheById(int $id) |
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{ |
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// Check if already in addToCache |
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if ($this->isCachedById($id)) { |
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return $this->cacheById[$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 cache by ID |
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* |
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* @param $id |
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* @return bool |
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*/ |
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protected function isCachedById(int $id) |
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{ |
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return array_key_exists($id, $this->cacheById); |
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} |
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/** |
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* @param ObjectWithId $object |
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* @return $this |
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*/ |
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protected function cacheById(ObjectWithId $object) |
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{ |
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// Check if already in cache |
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if (!$id = $this->isCachedById($object->id)) { |
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// Cache it |
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$this->cacheById[$id] = $object; |
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} |
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return $this; |
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} |
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/******************************************* |
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* RECORD BY ID |
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*******************************************/ |
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/** |
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* @param int $id |
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* @param string|null $toScenario |
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* @return RecordWithId|null |
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*/ |
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public function findRecordById(int $id, string $toScenario = null) |
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{ |
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return $this->findRecordByCondition( |
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[ |
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'id' => $id |
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], |
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$toScenario |
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); |
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} |
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/** |
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* @param int $id |
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* @param string|null $toScenario |
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* @throws RecordNotFoundException |
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* @return RecordWithId|null |
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*/ |
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public function getRecordById(int $id, string $toScenario = null) |
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{ |
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if (!$record = $this->findRecordById($id, $toScenario)) { |
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$this->notFoundRecordByIdException($id); |
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} |
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return $record; |
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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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* @param int|null $id |
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* @throws ObjectNotFoundException |
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*/ |
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protected function notFoundByIdException(int $id = null) |
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{ |
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throw new ObjectNotFoundException( |
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sprintf( |
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'Object does not exist with the id "%s".', |
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(string)$id |
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) |
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); |
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} |
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/** |
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* @param int|null $id |
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* @throws RecordNotFoundException |
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*/ |
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protected function notFoundRecordByIdException(int $id = null) |
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{ |
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throw new RecordNotFoundException( |
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sprintf( |
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'Record does not exist with the id "%s".', |
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(string)$id |
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) |
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); |
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} |
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} |
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This check looks for methods that are used by a trait but not required by it.
To illustrate, let’s look at the following code example
The trait
Idable
provides a methodequalsId
that in turn relies on the methodgetId()
. If this method does not exist on a class mixing in this trait, the method will fail.Adding the
getId()
as an abstract method to the trait will make sure it is available.