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<?php | |
/** | |
* @file | |
* Contains \Drupal\Core\Cache\CacheableDependencyInterface. | |
*/ | |
namespace Drupal\Core\Cache; | |
/** | |
* Defines an interface for objects which may be used by other cached objects. | |
* | |
* All cacheability metadata exposed in this interface is bubbled to parent | |
* objects when they are cached: if a child object needs to be varied by certain | |
* cache contexts, invalidated by certain cache tags, expire after a certain | |
* maximum age, then so should any parent object. | |
* | |
* @ingroup cache | |
*/ | |
interface CacheableDependencyInterface { | |
/** | |
* The cache contexts associated with this object. | |
* | |
* These identify a specific variation/representation of the object. | |
* | |
* Cache contexts are tokens: placeholders that are converted to cache keys by | |
* the @cache_contexts_manager service. The replacement value depends on the | |
* request context (the current URL, language, and so on). They're converted | |
* before storing an object in cache. | |
* | |
* @return string[] | |
* An array of cache context tokens, used to generate a cache ID. | |
* | |
* @see \Drupal\Core\Cache\Context\CacheContextsManager::convertTokensToKeys() | |
*/ | |
public function getCacheContexts(); | |
/** | |
* The cache tags associated with this object. | |
* | |
* When this object is modified, these cache tags will be invalidated. | |
* | |
* @return string[] | |
* A set of cache tags. | |
*/ | |
public function getCacheTags(); | |
/** | |
* The maximum age for which this object may be cached. | |
* | |
* @return int | |
* The maximum time in seconds that this object may be cached. | |
*/ | |
public function getCacheMaxAge(); | |
} |