public function getPattern()
{
switch ($action = $this->getAction()) {
case 'add':
case 'append':
case 'update':
case 'insert':
return "/{$action}_(.*)_to_(.*)_table/";
break;
case 'delete':
case 'remove':
case 'alter':
return "/{$action}_(.*)_from_(.*)_table/";
break;
default:
return "/{$action}_(.*)_table/";
break;
}
}