www.gusucode.com > 24Beta 虚拟主机版 1.0.0 Beta源码程序 > 24Beta 虚拟主机版 1.0.0 Beta源码程序/24Beta-1.0.0-vhost/library/framework/collections/CTypedList.php
<?php /** * This file contains CTypedList class. * * @author Qiang Xue <qiang.xue@gmail.com> * @link http://www.yiiframework.com/ * @copyright Copyright © 2008-2009 Yii Software LLC * @license http://www.yiiframework.com/license/ */ /** * CTypedList represents a list whose items are of the certain type. * * CTypedList extends {@link CList} by making sure that the elements to be * added to the list is of certain class type. * * @author Qiang Xue <qiang.xue@gmail.com> * @version $Id: CTypedList.php 433 2008-12-30 22:59:17Z qiang.xue $ * @package system.collections * @since 1.0 */ class CTypedList extends CList { private $_type; /** * Constructor. * @param string class type */ public function __construct($type) { $this->_type=$type; } /** * Inserts an item at the specified position. * This method overrides the parent implementation by * checking the item to be inserted is of certain type. * @param integer the specified position. * @param mixed new item * @throws CException If the index specified exceeds the bound, * the list is read-only or the element is not of the expected type. */ public function insertAt($index,$item) { if($item instanceof $this->_type) parent::insertAt($index,$item); else throw new CException(Yii::t('yii','CTypedList<{type}> can only hold objects of {type} class.', array('{type}'=>$this->_type))); } }