<?
abstract class Object_Factory {
	private static $CACHE = array();
	public static $CACHE_ENABLED = true;
	
	public static function Build() {
		$params = func_get_args();
		$classname = strtolower($params[0]);
		
		## 	Activation du cache pour DB_Object 
		if (self::$CACHE_ENABLED && sizeof($params) == 2 && is_subclass_of($classname, 'DB_Object') && (int) $params[1] > 0) {
			if (!isset(self::$CACHE[$classname][$params[1]])) {
				self::$CACHE[$classname][$params[1]] = new $classname($params[1]);
			}
			return self::$CACHE[$classname][$params[1]];
		} else {
			unset($params[0]);
			foreach ($params as $k => $v) {
				if (is_string($v)) {
					$params[$k] = "'".addslashes($v)."'";
				}
			}
			if (defined('EXTENDED_CLASS_PATH') && @include_once(EXTENDED_CLASS_PATH.$classname.'.ext.class.php')) {
				$classname = 'extended_'.$classname;
			}
			return eval('return new '.$classname.'('.join(", ", $params).');');
		}
	}
	
	public static function BuildList($classname, $values) {
		$List_Of_Objects = array();
		if (($array_values = self::unserialize($values)) && sizeof($array_values) > 0) {
			foreach ($array_values as $v) {
				if ((int) $v > 0) {
					$List_Of_Objects[(int) $v] = Factory::Build($classname, (int) $v);
				}
			}
		}
		return $List_Of_Objects;
	}
	
	public static function SerializeList($v) {
		if (is_array($v) && sizeof($v) > 0) {
			return join(ARRAY_DB_DELIMITER, array_keys($v));
		} else {
			return '';
		}
	}
	
	public static function serialize($v) {
		if (is_array($v) && sizeof($v) > 0) {
			return join(ARRAY_DB_DELIMITER, array_keys($v));
		} else if (is_object($v)) {
			return join(ARRAY_DB_DELIMITER, $v->get_keys());
		} else {
			return '';
		}
	}
	
	public static function unserialize($values) {
		if (is_string($values)) {
			$array_values = explode(ARRAY_DB_DELIMITER, $values);
		} else if (is_array($values)) {
			$array_values = $values;
		} else {
			$array_values = false;
		}
		return $array_values;
	}
	
	public static function Search($classname, $where) {
		$OBJET = self::Build($classname);
		
		switch (func_num_args()) {
			case 2:
				return $OBJET->Search(func_get_arg(1));
			break;
			
			case 3:
				return $OBJET->Search(func_get_arg(1), func_get_arg(2));
			break;
			
			case 4:
				return $OBJET->Search(func_get_arg(1), func_get_arg(2), func_get_arg(3));
			break;
			
			case 5:
				return $OBJET->Search(func_get_arg(1), func_get_arg(2), func_get_arg(3), func_get_arg(4));
			break;
		}
	}
}
?>