/**************************************************************************************
* Copyright (c) Jonas Bon�r, Alexandre Vasseur. All rights reserved. *
* http://aspectwerkz.codehaus.org *
* ---------------------------------------------------------------------------------- *
* The software in this package is published under the terms of the LGPL license *
* a copy of which has been included with this distribution in the license.txt file. *
**************************************************************************************/
package org.codehaus.aspectwerkz.joinpoint.management;
import org.codehaus.aspectwerkz.IndexTuple;
import org.codehaus.aspectwerkz.System;
import org.codehaus.aspectwerkz.aspect.management.AspectManager;
/**
* Handles the execution of the before advices.
*
* @author <a href="mailto:jboner@codehaus.org">Jonas Bon�r</a>
*/
public class BeforeAdviceExecutor {
/**
* The advices indexes.
*/
private final IndexTuple[] m_adviceIndexes;
/**
* The aspect system.
*/
private final System m_system;
/**
* The aspect manager.
*/
private final AspectManager m_aspectManager;
/**
* Creates a new advice executor.
*
* @param adviceIndexes
* @param system
*/
public BeforeAdviceExecutor(final IndexTuple[] adviceIndexes, final System system) {
m_adviceIndexes = adviceIndexes;
m_system = system;
m_aspectManager = m_system.getAspectManager();
}
/**
* Executes its advices one by one. After the last advice has been executed, the original method is invoked.
*
* @param joinPoint the current join point
* @return null
*/
public Object proceed(final JoinPointBase joinPoint) throws Throwable {
if (!joinPoint.isInCflow()) {
return null;
}
for (int i = 0, j = m_adviceIndexes.length; i < j; i++) {
IndexTuple index = m_adviceIndexes[i];
int aspectIndex = index.getAspectIndex();
int methodIndex = index.getMethodIndex();
m_aspectManager.getAspectContainer(aspectIndex).invokeAdvice(methodIndex, joinPoint);
}
return null;
}
/**
* Checks if the executor has any advices.
*
* @return true if it has advices
*/
public boolean hasAdvices() {
return m_adviceIndexes.length != 0;
}
}