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Interface Continuation<R,E extends java.lang.Exception>

All Known Implementing Classes:

Continuation.ErrorContinuation, Continuation.ExternalContinuation, Continuation.ListenerContinuation, Continuation.NamedContinuation, Continuation.SimpleContinuation, Continuation.StandardContinuation, ContinuationMessage, FetchHandleMessage, FetchMessage, GCInsertMessage, GCLookupHandlesMessage, GCRefreshMessage, InsertMessage, LookupHandlesMessage, LookupMessage, MyMsg, PastRegrTest.TestCommand, PastRegrTest.TestExceptionCommand, RawPastRegrTest.TestCommand, RawPastRegrTest.TestExceptionCommand, ReplicationManagerImpl.ReplicationManagerDeleter

public interface Continuation<R,E extends java.lang.Exception>

Asynchronously receives the result to a given method call, using the command pattern. Implementations of this class contain the remainder of a computation which included an asynchronous method call. When the result to the call becomes available, the receiveResult method on this command is called.

Version:

$Id: Continuation.java 4654 2009-01-08 16:33:07Z jeffh $

Author:

Alan Mislove, Andreas Haeberlen

Nested Class Summary

static class	Continuation.ErrorContinuation<R,E extends java.lang.Exception> This class is a Continuation provided for simplicity which passes any results up to the parent Continuation which it is constructed with.
static class	Continuation.ExternalContinuation<R,E extends java.lang.Exception> This class provides a continuation which is designed to be used from an external thread.
static class	Continuation.ExternalContinuationRunnable<R,E extends java.lang.Exception> This class is used when you want to run some task on the selector thread and wait for it to return its result in a Continuation.
static class	Continuation.ExternalRunnable This class is used when you want to run some task on the selector thread and wait for it to return its result.
static class	Continuation.ListenerContinuation<R,E extends java.lang.Exception> This class is a Continuation provided for simplicity which listens for any errors and ignores any success values.
static class	Continuation.MultiContinuation This class represents a Continuation which is used when multiple results are expected, which can come back at different times.
static class	Continuation.NamedContinuation Continuation class which takes a provided string as it's name, and returns that String when toString() is called.
static class	Continuation.SimpleContinuation This class is a Continuation provided for simplicity which passes both results and exceptions to the receiveResult() method.
static class	Continuation.StandardContinuation<R,E extends java.lang.Exception> This class is a Continuation provided for simplicity which passes any errors up to the parent Continuation which it is constructed with.

Method Summary

void	receiveException(E exception) Called when an exception occurred as a result of the previous command.
void	receiveResult(R result) Called when a previously requested result is now available.

Method Detail

receiveResult

void receiveResult(R result)

Called when a previously requested result is now available.

Parameters:

result - The result of the command.

receiveException

void receiveException(E exception)

Called when an exception occurred as a result of the previous command.

Parameters:

result - The exception which was caused.