org.apache.zookeeper

Interface AsyncCallback.VoidCallback

All Superinterfaces:

AsyncCallback

Enclosing interface:

AsyncCallback

@InterfaceAudience.Public
public static interface AsyncCallback.VoidCallback
extends AsyncCallback

This callback doesn't retrieve anything from the node. It is useful for some APIs that doesn't want anything sent back, e.g. ZooKeeper#sync(String, VoidCallback, Object).

Nested Class Summary

Nested classes/interfaces inherited from interface org.apache.zookeeper.AsyncCallback

AsyncCallback.ACLCallback, AsyncCallback.AllChildrenNumberCallback, AsyncCallback.Children2Callback, AsyncCallback.ChildrenCallback, AsyncCallback.Create2Callback, AsyncCallback.DataCallback, AsyncCallback.EphemeralsCallback, AsyncCallback.MultiCallback, AsyncCallback.StatCallback, AsyncCallback.StringCallback, AsyncCallback.VoidCallback

Method Summary

Modifier and Type	Method and Description
void	processResult(int rc, String path, Object ctx) Process the result of the asynchronous call.

Method Detail

processResult

void processResult(int rc,
                   String path,
                   Object ctx)

Process the result of the asynchronous call.

On success, rc is KeeperException.Code.OK.

On failure, rc is set to the corresponding failure code in KeeperException.

• KeeperException.Code.NONODE - The node on given path doesn't exist for some API calls.
• KeeperException.Code.BADVERSION - The given version doesn't match the node's version for some API calls.
• KeeperException.Code.NOTEMPTY - the node has children and some API calls cannot succeed, e.g. ZooKeeper#delete(String, int, VoidCallback, Object).

Parameters:

rc - The return code or the result of the call.

path - The path that we passed to asynchronous calls.

ctx - Whatever context object that we passed to asynchronous calls.

See Also:

ZooKeeper#delete(String, int, VoidCallback, Object), ZooKeeper#removeAllWatches(String, Watcher.WatcherType, boolean, VoidCallback, Object), ZooKeeper#removeWatches(String, Watcher, Watcher.WatcherType, boolean, VoidCallback, Object), ZooKeeper#sync(String, VoidCallback, Object)