RefinableCacheableDependencyInterface.php

<?php

namespace Drupal\Core\Cache;


/**
 * Allows to add cacheability metadata to an object for the current runtime.
 *
 * This must be used when changing an object in a way that affects its
 * cacheability. For example, when changing the active translation of an entity
 * based on the current content language then a cache context for that must be
 * added.
 */
interface RefinableCacheableDependencyInterface extends CacheableDependencyInterface {
    
    /**
     * Adds cache contexts.
     *
     * @param string[] $cache_contexts
     *   The cache contexts to be added.
     *
     * @return $this
     */
    public function addCacheContexts(array $cache_contexts);
    
    /**
     * Adds cache tags.
     *
     * @param string[] $cache_tags
     *   The cache tags to be added.
     *
     * @return $this
     */
    public function addCacheTags(array $cache_tags);
    
    /**
     * Merges the maximum age (in seconds) with the existing maximum age.
     *
     * The max age will be set to the given value if it is lower than the existing
     * value.
     *
     * @param int $max_age
     *   The max age to associate.
     *
     * @return $this
     *
     * @throws \InvalidArgumentException
     *   Thrown if a non-integer value is supplied.
     */
    public function mergeCacheMaxAge($max_age);
    
    /**
     * Adds a dependency on an object: merges its cacheability metadata.
     *
     * @param \Drupal\Core\Cache\CacheableDependencyInterface|object $other_object
     *   The dependency. If the object implements CacheableDependencyInterface,
     *   then its cacheability metadata will be used. Otherwise, the passed in
     *   object must be assumed to be uncacheable, so max-age 0 is set.
     *
     * @return $this
     *
     * @see \Drupal\Core\Cache\CacheableMetadata::createFromObject()
     */
    public function addCacheableDependency($other_object);

}