public static function loadMetadataClass($className, $packageName = '')
    {
        if (class_exists($className, false)) {
            return true;
        }
        if (isset(self::$_classNameCache[$packageName . $className])) {
            return true;
        }
        $filePath = self::getLibFileWithPath($className, $packageName);
        if ($filePath) {
            include_once($filePath);
            self::$_classNameCache[$packageName . $className] = 1;
            return true;
        }
        return false;
    }
public static function loadMetadataClass($className, $packageName = '')
    {
        if (class_exists($className, false)) {
            return true;
        }
        if (isset(self::$_classNameCache[$packageName . $className])) {
            return true;
        }
        $filePath = self::getLibFileWithPath($className, $packageName);
        if ($filePath) {
            include_once($filePath);
            self::$_classNameCache[$packageName . $className] = 1;
            return true;
        }
        return false;
    }
public static function loadMetadataClass ( $ className , $ packageName = '' ) { if ( class_exists ( $ className , false ) ) { return true ; } if ( isset ( self :: $ _classNameCache [ $ packageName . $ className ] ) ) { return true ; } $ filePath = self :: getLibFileWithPath ( $ className , $ packageName ) ; if ( $ filePath ) { include_once ( $ filePath ) ; self :: $ _classNameCache [ $ packageName . $ className ] = 1 ; return true ; } return false ; }
Load class of MetaObject

@param type $className
@param type $packageName
@return boolean
Load class of MetaObject