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- <?php
- namespace Elgg\Cache;
- /**
- * Implements the caching API but doesn't actually do any caching.
- *
- * Pass an instance of this class as a cache value to turn off caching.
- *
- * WARNING: API IN FLUX. DO NOT USE DIRECTLY.
- *
- * @package Elgg
- * @subpackage Cache
- * @since 1.10.0
- *
- * @access private
- */
- final class NullPool implements Pool {
- /** @inheritDoc */
- public function get($key, callable $callback) {
- return call_user_func($callback);
- }
-
- /** @inheritDoc */
- public function invalidate($key) {
- // values are always expired, so nothing to do
- }
- /** @inheritDoc */
- public function put($key, $value) {
- // values are always expired, so nothing to do
- }
- }
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