* ElggCache interface improved

* ElggStaticVariableCache introduced as a placeholder for more advanced caching.

git-svn-id: https://code.elgg.org/elgg/trunk@2384 36083f99-b078-4883-b0ff-0f9b5a30f544

1 files changed, 22 insertions, 0 deletions

diff --git a/engine/lib/api.php b/engine/lib/api.php
index 4ca9e208c..198f3efb0 100644
--- a/engine/lib/api.php
+++ b/engine/lib/api.php
@@ -237,6 +237,28 @@
 		}
 		
 		/**
+		 * Invalidate a given key.
+		 *
+		 * @param string $key
+		 * @return bool
+		 */
+		public function delete($key)
+		{
+			global $CONFIG;
+			
+			$key = sanitise_string($key);
+			
+			return delete_data("DELETE from {$CONFIG->dbprefix}hmac_cache where hmac='$key'");
+		}
+		
+		/**
+		 * Clear out all the contents of the cache.
+		 * 
+		 * Not currently implemented in this cache type.
+		 */
+		public function clear() { return true; }
+		
+		/**
 		 * Clean out old stuff.
 		 *
 		 */