org.apache.qpid.client.failover

Class FailoverNoopSupport<T,E extends Exception>

java.lang.Object

org.apache.qpid.client.failover.FailoverNoopSupport<T,E>

All Implemented Interfaces:

FailoverSupport<T,E>

public class FailoverNoopSupport<T,E extends Exception>
extends Object
implements FailoverSupport<T,E>

FailoverNoopSupport is a FailoverSupport implementation that does not really provide any failover support at all. It wraps a FailoverProtectedOperation but should that operation throw FailoverException this support class simply re-raises that exception as an IllegalStateException. This support wrapper should only be used where the caller can be certain that the failover protected operation cannot acutally throw a failover exception, for example, because the caller already holds a lock preventing that condition from arising.

CRC Card

Responsibilities	Collaborations
Perform a fail-over protected operation raising providing no handling of fail-over conditions.

Constructor Summary

Constructors

Constructor and Description
FailoverNoopSupport(FailoverProtectedOperation<T,E> operation, AMQConnection con) Creates an automatic retrying fail-over handler for the specified operation.

Method Summary

Methods

Modifier and Type	Method and Description
T	execute() Delegates to another continuation which is to be provided with fail-over handling.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

FailoverNoopSupport

public FailoverNoopSupport(FailoverProtectedOperation<T,E> operation,
                   AMQConnection con)

Creates an automatic retrying fail-over handler for the specified operation.

Parameters:

operation - The fail-over protected operation to wrap in this handler.

Method Detail

execute

public T execute()
          throws E extends Exception

Delegates to another continuation which is to be provided with fail-over handling.

Specified by:

execute in interface FailoverSupport<T,E extends Exception>

Returns:

The return value from the delegated to continuation.

Throws:

E - Any exception that the delegated to continuation may raise.

E extends Exception