Subversion-Projekte lars-tiefland.prado

<?php
/**
 * DaoManager class file.
 *
 * @author Wei Zhuo <weizhuo[at]gmail[dot]com>
 * @link http://www.pradosoft.com/
 * @copyright Copyright &copy; 2005-2006 PradoSoft
 * @license http://www.pradosoft.com/license/
 * @version $Id: DaoManager.php 1578 2006-12-17 22:20:50Z wei $
 * @package Demos
 */

Prado::using('System.Data.SqlMap.TSqlMapConfig');

/**
 * DaoManager class.
 *
 * A Registry for Dao and an implementation of that type.
 *
 * @author Wei Zhuo <weizhuo[at]gmail[dot]com>
 * @version $Id: DaoManager.php 1578 2006-12-17 22:20:50Z wei $
 * @package Demos
 * @since 3.1
 */
class DaoManager extends TSqlMapConfig
{
        /**
         * @var array registered list of dao
         */
        private $_dao=array();

        /**
         * Initializes the module.
         * This method is required by IModule and is invoked by application.
         * It loads dao information from the module configuration.
         * @param TXmlElement module configuration
         */
        public function init($xml)
        {
                parent::init($xml);
                foreach($xml->getElementsByTagName("dao") as $node)
                {
                        $this->_dao[$node->getAttribute('id')] =
                                array('class' => $node->getAttribute('class'));
                }
        }

        /**
         * @return array list of registered Daos
         */
        public function getDaos()
        {
                return $this->_dao;
        }

        /**
         * Returns an implementation of a Dao type, implements the Registery
         * pattern. Multiple calls returns the same Dao instance.
         * @param string Dao type to find.
         * @return object instance of the Dao implementation.
         */
        public function getDao($class)
        {
                if(isset($this->_dao[$class]))
                {
                        if(!isset($this->_dao[$class]['instance']))
                        {
                                $dao = Prado::createComponent($this->_dao[$class]['class']);
                                $dao->setSqlMap($this->getClient());
                                $this->_dao[$class]['instance'] = $dao;
                        }
                        return $this->_dao[$class]['instance'];
                }
                else
                        throw new TimeTrackerException('daomanager_undefined_dao', $class);
        }
}

?>