114 lines
3.0 KiB
PHP
114 lines
3.0 KiB
PHP
<?php
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/**
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* Zend Framework (http://framework.zend.com/)
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*
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* @link http://github.com/zendframework/zf2 for the canonical source repository
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* @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
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* @license http://framework.zend.com/license/new-bsd New BSD License
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*/
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namespace Zend\Hydrator\Strategy;
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class ClosureStrategy implements StrategyInterface
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{
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/**
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* Function, used in extract method, default:
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*
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* <code>
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* function ($value) {
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* return $value;
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* };
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* </code>
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*
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* @var callable
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*/
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protected $extractFunc = null;
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/**
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* Function, used in hydrate method, default:
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*
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* <code>
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* function ($value) {
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* return $value;
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* };
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* </code>
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*
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* @var callable
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*/
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protected $hydrateFunc = null;
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/**
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* You can describe how your values will extract and hydrate, like this:
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*
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* <code>
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* $hydrator->addStrategy('category', new ClosureStrategy(
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* function (Category $value) {
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* return (int) $value->id;
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* },
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* function ($value) {
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* return new Category((int) $value);
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* }
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* ));
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* </code>
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*
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* @param callable $extractFunc - anonymous function, that extract values
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* from object
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* @param callable $hydrateFunc - anonymous function, that hydrate values
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* into object
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*/
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public function __construct($extractFunc = null, $hydrateFunc = null)
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{
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if (isset($extractFunc)) {
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if (!is_callable($extractFunc)) {
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throw new \Exception('$extractFunc must be callable');
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}
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$this->extractFunc = $extractFunc;
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} else {
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$this->extractFunc = function ($value) {
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return $value;
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};
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}
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if (isset($hydrateFunc)) {
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if (!is_callable($hydrateFunc)) {
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throw new \Exception('$hydrateFunc must be callable');
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}
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$this->hydrateFunc = $hydrateFunc;
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} else {
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$this->hydrateFunc = function ($value) {
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return $value;
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};
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}
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}
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/**
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* Converts the given value so that it can be extracted by the hydrator.
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*
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* @param mixed $value The original value.
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* @param array $object The object is optionally provided as context.
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* @return mixed Returns the value that should be extracted.
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*/
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public function extract($value, $object = null)
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{
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$func = $this->extractFunc;
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return $func($value, $object);
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}
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/**
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* Converts the given value so that it can be hydrated by the hydrator.
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*
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* @param mixed $value The original value.
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* @param array $data The whole data is optionally provided as context.
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* @return mixed Returns the value that should be hydrated.
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*/
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public function hydrate($value, $data = null)
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{
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$func = $this->hydrateFunc;
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return $func($value, $data);
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}
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}
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