cakephp/src/Datasource/ResultSetDecorator.php

<?php
/**
 * CakePHP(tm) : Rapid Development Framework (http://cakephp.org)
 * Copyright (c) Cake Software Foundation, Inc. (http://cakefoundation.org)
 *
 * Licensed under The MIT License
 * For full copyright and license information, please see the LICENSE.txt
 * Redistributions of files must retain the above copyright notice.
 *
 * @copyright     Copyright (c) Cake Software Foundation, Inc. (http://cakefoundation.org)
 * @link          http://cakephp.org CakePHP(tm) Project
 * @since         3.0.0
 * @license       http://www.opensource.org/licenses/mit-license.php MIT License
 */
namespace Cake\Datasource;

use Cake\Datasource\ResultSetInterface;
use Cake\Collection\Collection;

/**
 * Generic ResultSet decorator. This will make any traversable object appear to
 * be a database result
 *
 * @return void
 */
class ResultSetDecorator extends Collection implements ResultSetInterface {

/**
 * Make this object countable.
 *
 * Part of the Countable interface. Calling this method
 * will convert the underlying traversable object into an array and
 * get the count of the underlying data.
 *
 * @return int
 */
	public function count() {
		if ($this->getInnerIterator() instanceof Countable) {
			return $this->getInnerIterator()->count();
		}

		return count($this->toArray());
	}

/**
 * Serialize a resultset.
 *
 * Part of Serializable interface.
 *
 * @return string Serialized object
 */
	public function serialize() {
		return serialize($this->toArray());
	}

/**
 * Unserialize a resultset.
 *
 * Part of Serializable interface.
 *
 * @param string $serialized Serialized object
 * @return void
 */
	public function unserialize($serialized) {
		parent::__construct(unserialize($serialized));
	}

}