public class CountingCallback extends Callback.Nested
A callback wrapper that succeeds the wrapped callback when the count is reached, or on first failure.
This callback is particularly useful when an async operation is split into multiple parts, for example when an original byte buffer that needs to be written, along with a callback, is split into multiple byte buffers, since it allows the original callback to be wrapped and notified only when the last part has been processed.
Example:
public void process(EndPoint endPoint, ByteBuffer buffer, Callback callback)
{
ByteBuffer[] buffers = split(buffer);
CountCallback countCallback = new CountCallback(callback, buffers.length);
endPoint.write(countCallback, buffers);
}
Callback.Adapter, Callback.Nested, Callback.NonBlocking| Constructor and Description |
|---|
CountingCallback(Callback callback,
int count) |
| Modifier and Type | Method and Description |
|---|---|
void |
failed(Throwable failure)
Callback invoked when the operation fails.
|
void |
succeeded()
Callback invoked when the operation completes.
|
String |
toString() |
isNonBlockingpublic CountingCallback(Callback callback, int count)
public void succeeded()
CallbackCallback invoked when the operation completes.
succeeded in interface Callbacksucceeded in class Callback.NestedCallback.failed(Throwable)public void failed(Throwable failure)
CallbackCallback invoked when the operation fails.
failed in interface Callbackfailed in class Callback.Nestedfailure - the reason for the operation failureCopyright © 1995–2017 Webtide. All rights reserved.