<?php

/**

* Copyright 2017 OpenStack Foundation

* Licensed under the Apache License, Version 2.0 (the "License");

* you may not use this file except in compliance with the License.

* You may obtain a copy of the License at

* http://www.apache.org/licenses/LICENSE-2.0

* Unless required by applicable law or agreed to in writing, software

* distributed under the License is distributed on an "AS IS" BASIS,

* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

* See the License for the specific language governing permissions and

* limitations under the License.

**/

interface ITagManager

{

/**

* @param String $tag_val

* @return ITag

*/

public function addTag($tag_val);

/**

* @param String $tag_val

* @param Int $tag_id

* @return ITag

*/

public function updateTag($tag_val, $tag_id);

/**

* @param Int[] $tag_ids

* @return Bool

*/

public function deleteTags($tag_ids);

/**

* @param String $merge_tag

* @param ITag[] $tags

* @return ITag

*/

public function mergeTags($merge_tag, $tags);

/**

* @param String $tag_val

* @param Int $tag_id

* @return Bool

*/

public function splitTag($tag_val, $tag_id);

}