/**
* Initializes and returns a new subclassesd object
* @param class String of class name to inialize instance with
* which must be a subclass of DataCenterDBRow
* @param category String of category name to set
* @param type String of type name to set
* @param values Array of field => value pairs to set
*/
public static function newFromClass($class, $category, $type, array $values = array())
{
if (!DataCenterDB::isRowClass($class)) {
throw new MWException($class . ' is not an compatable with DataCenterDBRow');
}
if (!DataCenterDB::isType($category, $type)) {
throw new MWException($category . '/' . $type . ' is not a valid type');
}
$rowObject = new $class($category, $type);
if (count($values) > 0) {
$rowObject->set($values);
}
return $rowObject;
}