3 * An general object factory
5 * @author Roland Haeder <webmaster@ship-simu.org>
7 * @copyright Copyright(c) 2007, 2008 Roland Haeder, this is free software
8 * @license GNU GPL 3.0 or any newer version
9 * @link http://www.ship-simu.org
11 * This program is free software: you can redistribute it and/or modify
12 * it under the terms of the GNU General Public License as published by
13 * the Free Software Foundation, either version 3 of the License, or
14 * (at your option) any later version.
16 * This program is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 * GNU General Public License for more details.
21 * You should have received a copy of the GNU General Public License
22 * along with this program. If not, see <http://www.gnu.org/licenses/>.
24 class ObjectFactory extends BaseFactory {
26 * Protected constructor
28 * @param $class Name of the real class (not BaseFactory)
31 protected function __construct () {
32 // Call parent constructor
33 parent::__construct(__CLASS__);
35 // Set object description
36 $this->setObjectDescription("Simple generic object factory");
40 * Creates a new object given by the name or throws an exception if
41 * the class was not found. No parameters for the object are currently
44 * @param $className Name of the class we shall construct
45 * @return $objectInstance An instance of the requested object
46 * @throws ClassNotFoundException If the requested class was not found
47 * @throws EmptyVariableException If a variable is empty unexpectly
49 public final static function createObjectByName ($className) {
50 // First get an instance of this factory
51 $factoryInstance = new ObjectFactory();
53 // Is the class name valid and is the class there?
54 if (empty($className)) {
55 // Throw an exception here
56 throw new EmptyVariableException(array($factoryInstance, 'className'), self::EXCEPTION_UNEXPECTED_EMPTY_STRING);
57 } elseif (!class_exists($className)) {
58 // Then throw an exception
59 throw new ClassNotFoundException($className, self::EXCEPTION_CLASS_NOT_FOUND);
62 // Then Prepare the eval() command
63 $eval = sprintf("\$objectInstance = %s::create%s();",
71 // Return the prepared instance
72 return $objectInstance;