Spring Framework example source code file (RetryAspect.java)

This example Spring Framework source code file (RetryAspect.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

Java - Spring Framework tags/keywords

around, around, aspect, object, object, pointcut, retryableexception, retryableexception, retryaspect, throwable, unreliablebean, unreliablebean

The Spring Framework RetryAspect.java source code

/*
 * Copyright 2002-2007 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.springframework.aop.aspectj.autoproxy;

import org.aspectj.lang.ProceedingJoinPoint;
import org.aspectj.lang.annotation.Around;
import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.annotation.Pointcut;

/**
 * @author Rob Harrop
 * @author Juergen Hoeller
 */
@Aspect
public class RetryAspect {

	private int beginCalls;

	private int commitCalls;

	private int rollbackCalls;


	@Pointcut("execution(public * UnreliableBean.*(..))")
	public void execOfPublicMethod() {
	}

	/**
	 * Retry Advice
	 */
	@Around("execOfPublicMethod()")
	public Object retry(ProceedingJoinPoint jp) throws Throwable {
		boolean retry = true;
		Object o = null;
		while (retry) {
			try {
				retry = false;
				this.beginCalls++;
				try {
					o = jp.proceed();
					this.commitCalls++;
				}
				catch (RetryableException e) {
					this.rollbackCalls++;
					throw e;
				}
			}
			catch (RetryableException re) {
				retry = true;
			}
		}
		return o;
	}


	public int getBeginCalls() {
		return this.beginCalls;
	}

	public int getCommitCalls() {
		return this.commitCalls;
	}

	public int getRollbackCalls() {
		return this.rollbackCalls;
	}

}