ObjectManager.php

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<?php
/***************************************************************
*  Copyright notice
*
*  (c) 2009 Jochen Rau <jochen.rau@typoplanet.de>
*  All rights reserved
*
*  This class is a backport of the corresponding class of FLOW3.
*  All credits go to the v5 team.
*
*  This script is part of the TYPO3 project. The TYPO3 project is
*  free software; you can redistribute it and/or modify
*  it under the terms of the GNU General Public License as published by
*  the Free Software Foundation; either version 2 of the License, or
*  (at your option) any later version.
*
*  The GNU General Public License can be found at
*  http://www.gnu.org/copyleft/gpl.html.
*
*  This script is distributed in the hope that it will be useful,
*  but WITHOUT ANY WARRANTY; without even the implied warranty of
*  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
*  GNU General Public License for more details.
*
*  This copyright notice MUST APPEAR in all copies of the script!
***************************************************************/

/**
 * Implementation of the default Extbase Object Manager
 *
 * @package Extbase
 * @subpackage Object
 */
class Tx_Extbase_Object_ObjectManager implements Tx_Extbase_Object_ObjectManagerInterface {

    /**
     * @var Tx_Extbase_Object_Container_Container
     */
    protected $objectContainer;

    /**
     * Constructs a new Object Manager
     */
    public function __construct() {
        $this->objectContainer = t3lib_div::makeInstance('Tx_Extbase_Object_Container_Container'); // Singleton
    }

    /**
     * Returns a fresh or existing instance of the object specified by $objectName.
     *
     * Important:
     *
     * If possible, instances of Prototype objects should always be created with the
     * Object Manager's create() method and Singleton objects should rather be
     * injected by some type of Dependency Injection.
     *
     * @param string $objectName The name of the object to return an instance of
     * @return object The object instance
     * @api
     */
    public function get($objectName) {
        $arguments = func_get_args();
        array_shift($arguments);
        return $this->objectContainer->getInstance($objectName, $arguments);
    }

    /**
     * Creates a fresh instance of the object specified by $objectName.
     *
     * This factory method can only create objects of the scope prototype.
     * Singleton objects must be either injected by some type of Dependency Injection or
     * if that is not possible, be retrieved by the get() method of the
     * Object Manager
     *
     * @param string $objectName The name of the object to create
     * @return object The new object instance
     * @throws Tx_Extbase_Object_Exception_WrongScropeException if the created object is not of scope prototype
     * @api
     */
    public function create($objectName) {
        $arguments = func_get_args();
        array_shift($arguments);
        $instance = $this->objectContainer->getInstance($objectName, $arguments);

        if ($instance instanceof t3lib_Singleton) {
            throw new Tx_Extbase_Object_Exception_WrongScope('Object "' . $objectName . '" is of not of scope prototype, but only prototype is supported by create()', 1265203124);
        }

        return $instance;
    }
}

?>