org.apache.jetspeed.util.interceptors
Class MethodReplayInterceptor

java.lang.Object
  org.apache.jetspeed.util.interceptors.MethodReplayInterceptor

All Implemented Interfaces:

org.aopalliance.aop.Advice, org.aopalliance.intercept.Interceptor, org.aopalliance.intercept.MethodInterceptor

public class MethodReplayInterceptor
extends Object
implements org.aopalliance.intercept.MethodInterceptor

Generic aspect that will attempt to replay a method invocation if one of a set of specified exceptions is thrown from its execution.

Author:

a336317

Field Summary

private org.apache.commons.logging.Log	log Log reference
private TransactionalMethodReplayDecisionMaker	replayDecisionMaker Object which decides whether or not a method invocation should be replayed
private int	retryCount How many times we should attempt to retry the method invocation if it fails
private int	retryInterval How long we should wait before retrying - specified in milliseconds *
private static long	serialVersionUID Serialization version identifier

Constructor Summary

MethodReplayInterceptor()

Method Summary

int	getRetryCount()
int	getRetryInterval()
Object	invoke(org.aopalliance.intercept.MethodInvocation invocation) Encloses super.invoke() in a try/catch block, where the catch block contains additional retry logic.
private boolean	isReplayable(org.aopalliance.intercept.MethodInvocation invocation, Exception exp) Determine if we should attempt to replay the method given that the previous invocation returned the passed exception.
void	setReplayDecisionMaker(TransactionalMethodReplayDecisionMaker replayDecisionMaker)
void	setRetryCount(int retryCount)
void	setRetryInterval(int retryInterval)

Methods inherited from class java.lang.Object

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

Field Detail

log

private org.apache.commons.logging.Log log

Log reference

serialVersionUID

private static final long serialVersionUID

Serialization version identifier

See Also:

Constant Field Values

retryCount

private int retryCount

How many times we should attempt to retry the method invocation if it fails

retryInterval

private int retryInterval

How long we should wait before retrying - specified in milliseconds *

replayDecisionMaker

private TransactionalMethodReplayDecisionMaker replayDecisionMaker

Object which decides whether or not a method invocation should be replayed

Constructor Detail

MethodReplayInterceptor

public MethodReplayInterceptor()

Method Detail

invoke

public Object invoke(org.aopalliance.intercept.MethodInvocation invocation)
              throws Throwable

Encloses super.invoke() in a try/catch block, where the catch block contains additional retry logic.

Specified by:

invoke in interface org.aopalliance.intercept.MethodInterceptor

Throws:

Throwable

getRetryCount

public int getRetryCount()

setRetryCount

public void setRetryCount(int retryCount)

getRetryInterval

public int getRetryInterval()

setRetryInterval

public void setRetryInterval(int retryInterval)

isReplayable

private boolean isReplayable(org.aopalliance.intercept.MethodInvocation invocation,
                             Exception exp)

Determine if we should attempt to replay the method given that the previous invocation returned the passed exception.

Parameters:

exp -

Returns:

True if we should replay the method.

setReplayDecisionMaker

public void setReplayDecisionMaker(TransactionalMethodReplayDecisionMaker replayDecisionMaker)