<?php
/**
 * Zend Framework (http://framework.zend.com/)
 *
 * @link      http://github.com/zendframework/zf2 for the canonical source repository
 * @copyright Copyright (c) 2005-2013 Zend Technologies USA Inc. (http://www.zend.com)
 * @license   http://framework.zend.com/license/new-bsd New BSD License
 */

namespace Zend\Cache\Storage;

interface TaggableInterface
{
    /**
     * Set tags to an item by given key.
     * An empty array will remove all tags.
     *
     * @param string   $key
     * @param string[] $tags
     * @return bool
     */
    public function setTags($key, array $tags);

    /**
     * Get tags of an item by given key
     *
     * @param string $key
     * @return string[]|FALSE
     */
    public function getTags($key);

    /**
     * Remove items matching given tags.
     *
     * If $disjunction only one of the given tags must match
     * else all given tags must match.
     *
     * @param string[] $tags
     * @param  bool  $disjunction
     * @return bool
     */
    public function clearByTags(array $tags, $disjunction = false);
}
