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Interface Continuation

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

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 3524 2007-01-09 14:09:27Z jeffh $

Author:

Alan Mislove, Andreas Haeberlen

Nested Class Summary

static class	Continuation.ErrorContinuation 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 This class provides a continuation which is designed to be used from an external thread.
static class	Continuation.ExternalContinuationRunnable 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 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 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(java.lang.Exception result) Called when an execption occured as a result of the previous command.
void	receiveResult(java.lang.Object result) Called when a previously requested result is now availble.

Method Detail

receiveResult

void receiveResult(java.lang.Object result)

Called when a previously requested result is now availble.

Parameters:

result - The result of the command.

receiveException

void receiveException(java.lang.Exception result)

Called when an execption occured as a result of the previous command.

Parameters:

result - The exception which was caused.