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<?php |
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/* |
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* This file is part of the moss-storage package |
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* |
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* (c) Michal Wachowski <[email protected]> |
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* |
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* For the full copyright and license information, please view the LICENSE |
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* file that was distributed with this source code. |
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*/ |
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namespace Moss\Storage\Query\Accessor; |
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use Moss\Storage\Model\ModelInterface; |
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/** |
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* Property accessor |
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* Grants access to entity properties |
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* |
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* @package Moss\Storage |
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*/ |
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final class Accessor implements AccessorInterface |
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{ |
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private $buffer = []; |
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/** |
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* Assigns passed identifier to primary key |
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* Possible only when entity has one primary key |
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* |
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* @param ModelInterface $model |
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* @param mixed $entity |
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* @param int|string $identifier |
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* |
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* @return void |
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*/ |
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public function identifyEntity(ModelInterface $model, &$entity, $identifier) |
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{ |
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$primaryKeys = $model->primaryFields(); |
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if (count($primaryKeys) !== 1) { |
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return; |
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} |
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$field = reset($primaryKeys)->name(); |
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$this->setPropertyValue($entity, $field, $identifier); |
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} |
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/** |
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* Returns property value |
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* |
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* @param array|object $entity |
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* @param string $field |
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* @param mixed $default |
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* |
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* @return mixed |
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* @throws AccessorException |
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*/ |
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public function getPropertyValue($entity, $field, $default = null) |
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{ |
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$this->assertEntity($entity); |
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if (is_array($entity) || $entity instanceof \ArrayAccess) { |
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return isset($entity[$field]) ? $entity[$field] : $default; |
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} |
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$ref = $this->getReflection($entity); |
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if (!$ref->hasProperty($field)) { |
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return isset($entity->{$field}) ? $entity->{$field} : $default; |
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} |
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return $this->getProperty($ref, $field)->getValue($entity); |
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} |
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/** |
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* Sets property value |
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* |
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* @param array|object $entity |
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* @param string $field |
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* @param mixed $value |
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* |
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* @throws AccessorException |
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*/ |
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public function setPropertyValue(&$entity, $field, $value) |
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{ |
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$this->assertEntity($entity); |
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if (is_array($entity) || $entity instanceof \ArrayAccess) { |
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$entity[$field] = $value; |
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return; |
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} |
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$ref = $this->getReflection($entity); |
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if (!$ref->hasProperty($field)) { |
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$entity->{$field} = $value; |
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return; |
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} |
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$this->getProperty($ref, $field)->setValue($entity, $value); |
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} |
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/** |
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* Asserts if entity is array or object |
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* |
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* @param mixed $entity |
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* |
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* @throws AccessorException |
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*/ |
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private function assertEntity($entity) |
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{ |
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if (!is_array($entity) && !is_object($entity)) { |
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throw new AccessorException('Unable to access entity properties, missing instance'); |
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} |
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} |
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/** |
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* Returns object reflection instance |
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* |
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* @param object $object |
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* |
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* @return \ReflectionClass |
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*/ |
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private function getReflection($object) |
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{ |
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$key = get_class($object); |
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if (!array_key_exists($key, $this->buffer)) { |
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$this->buffer[$key] = new \ReflectionClass($object); |
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} |
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return $this->buffer[$key]; |
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} |
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/** |
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* Returns object property instance |
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* |
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* @param \ReflectionClass $ref |
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* @param string $property |
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* |
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* @return \ReflectionProperty |
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*/ |
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private function getProperty(\ReflectionClass $ref, $property) |
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{ |
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$prop = $ref->getProperty($property); |
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$prop->setAccessible(true); |
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return $prop; |
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} |
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/** |
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* Adds value to array property |
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* If property is not an array - will be converted into one preserving existing value as first element |
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* |
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* @param mixed $entity |
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* @param string $field |
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* @param mixed $value |
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* |
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* @throws AccessorException |
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*/ |
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public function addPropertyValue(&$entity, $field, $value) |
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{ |
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$container = $this->getPropertyValue($entity, $field, $entity); |
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if (!is_array($container)) { |
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$container = empty($container) ? [] : [$container]; |
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} |
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$container[] = $value; |
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$this->setPropertyValue($entity, $field, $container); |
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} |
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} |
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