/**
* Get a value from the XCache object cache
*
- * @param $key String: cache key
+ * @param string $key cache key
+ * @param $casToken mixed: cas token
* @return mixed
*/
- public function get( $key ) {
+ public function get( $key, &$casToken = null ) {
$val = xcache_get( $key );
if ( is_string( $val ) ) {
} else {
$val = unserialize( $val );
}
+ } elseif ( is_null( $val ) ) {
+ return false;
}
return $val;
/**
* Store a value in the XCache object cache
*
- * @param $key String: cache key
+ * @param string $key cache key
* @param $value Mixed: object to store
- * @param $expire Int: expiration time
+ * @param int $expire expiration time
* @return bool
*/
public function set( $key, $value, $expire = 0 ) {
return true;
}
+ /**
+ * @param $casToken mixed
+ * @param $key string
+ * @param $value mixed
+ * @param $exptime int
+ * @return bool
+ */
+ public function cas( $casToken, $key, $value, $exptime = 0 ) {
+ // Can't find any documentation on xcache cas
+ throw new MWException( "CAS is not implemented in " . __CLASS__ );
+ }
+
/**
* Remove a value from the XCache object cache
*
- * @param $key String: cache key
- * @param $time Int: not used in this implementation
+ * @param string $key cache key
+ * @param int $time not used in this implementation
* @return bool
*/
public function delete( $key, $time = 0 ) {
return true;
}
+ /**
+ * Merge an item.
+ * XCache does not seem to support any way of performing CAS - this however will
+ * provide a way to perform CAS-like functionality.
+ *
+ * @param $key string
+ * @param $callback closure Callback method to be executed
+ * @param int $exptime Either an interval in seconds or a unix timestamp for expiry
+ * @param int $attempts The amount of times to attempt a merge in case of failure
+ * @return bool success
+ */
+ public function merge( $key, closure $callback, $exptime = 0, $attempts = 10 ) {
+ return $this->mergeViaLock( $key, $callback, $exptime, $attempts );
+ }
+
public function incr( $key, $value = 1 ) {
return xcache_inc( $key, $value );
}