<?php
/**
 * Instance creator
 *
 * $Id$
 *
 * @author gERD Schaufelberger <gerd@php-tools.net>
 * @license PHP License
 * @package Wombat
 * @subpackage base
 */

/**
 * Instance creator
 *
 * Functor to encapsulate new operator
 *
 * @version 0.3.0
 * @package Wombat
 * @subpackage base
 */
class WBClass_Creator_WBRequest extends WBClass_Creator
{

    /**
     * keep instances of current request object
     *
     * @var array
     */
    static protected $instances    =   array();

   /**
    * return request object
    *
    * There is only a single request object per type.
    *
    * @param array $parameter
    * @return object
    */
    public function instantiate($parameter = array())
    {
        // select module
        if (!isset($parameter['module']) || empty($parameter['module'])) {
            $parameter['module']    =   'Http';
        }

        $clazz  =   'WBRequest_' . WBParam::get('wb/request/module', $parameter['module']);
        if (isset(self::$instances[$clazz])) {
            return self::$instances[$clazz];
        }

        WBClass::load($clazz);
        self::$instances[$clazz]    =   new $clazz();
        return self::$instances[$clazz];
    }
}
?>