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<?php |
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/** |
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* Created by PhpStorm. |
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* User: PBX_g33k |
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* Date: 24-May-16 |
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* Time: 00:07 |
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*/ |
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namespace Pbxg33k\Traits; |
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/** |
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* Class HydratableTrait |
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* |
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* This trait allows you to hydrate a class/object by passing an array or stdObj and let it hydrate itself by |
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* calling either of the following methods: |
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* - hydrateClass($rawData) |
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* |
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* @author Oguzhan Uysal <[email protected]> |
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* @package Pbxg33k\Traits |
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*/ |
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trait HydratableTrait |
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{ |
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use PropertyTrait; |
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use ReflectionTrait; |
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/** |
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* List of types which are not used as objects |
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* |
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* @var array |
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*/ |
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public static $nonObjectTypes = ['string', 'int', 'integer', 'bool', 'boolean', 'array', 'float', 'mixed', 'null']; |
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/** |
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* List of classes which will take string arguments in constructor |
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* |
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* @var array |
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*/ |
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protected $giveDataInConstructor = ['\DateTime']; |
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/** |
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* Object constructor arguments to be passed when creating an object during conversion |
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* |
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* @var mixed |
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*/ |
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protected $objectConstructorArguments; |
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/** |
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* Converts a stdClass to models loaded in current context |
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* |
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* This method iterates over the passed $class |
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* For each key, it looks for a setter and type. |
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* If the value is an object, it initializes the object and assignes the initialized object. |
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* |
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* @param object|array $class class |
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* |
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* @return object |
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*/ |
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public function hydrateClass($class) |
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{ |
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$reflection = new \ReflectionClass($this); |
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// Iterate over $class for properties |
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foreach ($class as $itemKey => $itemValue) { |
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// Check if key exists in $this |
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// Convert key to a propertyname in $this |
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$this->hydrateProperty($itemKey, $itemValue, $reflection); |
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} |
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return $this; |
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} |
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/** |
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* Hydrates property with value. |
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* Value can be anything. If the property is supposed to be a Class of anykind we will try to instantiate it |
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* and assign the class to the property |
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* |
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* @param $key |
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* @param $value |
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* @param \ReflectionClass $reflection |
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* |
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* @throws \Exception |
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*/ |
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protected function hydrateProperty($key, $value, \ReflectionClass $reflection) |
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{ |
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$propertyName = $this->resolvePropertyName($key); |
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// Check if property exists and assign a ReflectionProperty class to $reflectionProperty |
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if (property_exists($this, $propertyName) && $reflectionProperty = $reflection->getProperty($propertyName)) { |
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// Get the expected property class from the property's DocBlock |
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if ($propertyClassName = ReflectionTrait::getClassFromDocComment($reflectionProperty->getDocComment(), true, $reflection)) { |
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// Set argument for constructor (if any), in case we're dealing with an object (IE: DateTime) |
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$this->objectConstructorArguments = (in_array($propertyClassName, $this->giveDataInConstructor)) ? $value : null; |
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if (!$this->isInstantiatable($propertyClassName)) { |
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return; |
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} |
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if (!in_array($propertyClassName, self::$nonObjectTypes)) { |
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$value = new $propertyClassName($this->objectConstructorArguments); |
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$this->checkObjectForErrors($value, true); |
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if (method_exists($value, 'hydrateClass') && $this->isHydratableValue($value)) { |
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$value->hydrateClass($value); |
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} |
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} |
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$this->setPropertyValue($propertyName, $value, true); |
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} |
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} |
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} |
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/** |
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* Resolves and returns propertyname |
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* |
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* @param $key |
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* |
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* @return mixed|string |
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*/ |
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private function resolvePropertyName($key) |
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{ |
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$propertyName = lcfirst(str_replace(' ', '', ucwords(str_replace('_', ' ', $key)))); |
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return (property_exists($this, $propertyName)) ? $propertyName : |
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(property_exists($this, lcfirst($propertyName)) ? lcfirst($propertyName) : |
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preg_replace_callback('/([A-Z])/', function($match) { |
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return strtolower('_' . $match[1]); |
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}, lcfirst($propertyName)) |
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); |
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} |
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/** |
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* Checks if the value can be hydrated for iteration |
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* |
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* @param $value |
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* |
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* @return bool |
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*/ |
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private function isHydratableValue($value) |
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{ |
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return (is_array($value) || is_object($value)); |
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} |
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/** |
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* Checks if Classname resolved from docblock can be instantiated |
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* |
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* @param $className |
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* |
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* @return bool |
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*/ |
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private function isInstantiatable($className) |
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{ |
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return (!interface_exists($className)); |
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} |
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/** |
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* Checks (and fixes) objects against known errors |
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* |
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* @param Object &$object |
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* @param bool $fix Fix errors |
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* |
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* @return void |
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* |
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* @throws \Exception |
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*/ |
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private function checkObjectForErrors(&$object, $fix = false) |
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{ |
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if (!is_object($object)) { |
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throw new \Exception('Non-object passed'); |
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} elseif ($object instanceof \DateTime) { |
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// The constructor (passed from the API) is NULL, indicating an empty value |
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// PHP DateTime's default value is now() |
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if ($this->objectConstructorArguments == null) { |
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$object = null; |
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} elseif (!$object->getTimestamp() && $fix) { |
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$object->setTimestamp(0); |
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} |
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} |
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} |
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} |
PBXg33k /
php-traits
