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* Copyright 2005, JBoss Inc., and individual contributors as indicated
* by the @authors tag. See the copyright.txt in the distribution for a
* full listing of individual contributors.
*
* This is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* This software is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*/
package org.jboss.test.aop.jdk15.dynamic.common;
import org.jboss.aop.joinpoint.FieldInvocation;
import org.jboss.aop.joinpoint.FieldReadInvocation;
import org.jboss.aop.joinpoint.FieldWriteInvocation;
import org.jboss.aop.joinpoint.Invocation;
import org.jboss.aop.joinpoint.ConstructorInvocation;
import org.jboss.aop.joinpoint.MethodInvocation;
import org.jboss.aop.advice.Interceptor;
/**
* Instance interceptor. Is used by dynamic test cases
* for interception of joinpoints. This interception
* is achieved through the dynamic addition of this interceptor
* to the interceptor chain of a ClassInstanceAdvisor.
* @author Flavia Rainone
*/
public class InstanceInterceptor implements Interceptor
{
private static InterceptionsCount interceptionsCount = new InterceptionsCount();
/**
* Returns the total number of times that any instance
* of this class intercepted a joinpoint, since the
* last time that resetCounts was called.
*/
public static InterceptionsCount getInterceptionsCount()
{
return interceptionsCount;
}
/**
* Resets the counting of interceptions to zero.
*/
public static void resetCounts()
{
interceptionsCount = new InterceptionsCount();
}
/**
* Returns the name of this interceptor.
*/
public String getName() { return "InstanceInterceptor"; }
/**
* Intercepts the joinpoint represented by <code>invocation</code>.
*/
public Object invoke(Invocation invocation) throws Throwable
{
interceptionsCount.total++;
if (invocation instanceof ConstructorInvocation)
{
interceptionsCount.constructor++;
}
else if (invocation instanceof FieldInvocation)
{
if (invocation instanceof FieldReadInvocation)
{
// never track runner access, because this field is accessed inside finalize method,
// which we don't know whether is executed
if (!((FieldReadInvocation) invocation).getField().getName().equals("runner"))
{
interceptionsCount.fieldRead++;
}
else
{
interceptionsCount.total--;
}
}
else if (invocation instanceof FieldWriteInvocation)
{
// never track runner reads, just for the sake of uniformity (runner reads aren't tracked)
if (!((FieldWriteInvocation) invocation).getField().getName().equals("runner"))
{
interceptionsCount.fieldWrite++;
}
else
{
interceptionsCount.total--;
}
}
else
{
throw new RuntimeException("Unexpected invocation type invalidates test correction.");
}
}
else if (invocation instanceof MethodInvocation)
{
// never track finalize executions, because we don't know whether they are executed
if (!((MethodInvocation) invocation).getMethod().getName().equals("finalize"))
{
interceptionsCount.method++;
}
else
{
interceptionsCount.total--;
}
}
return invocation.invokeNext();
}
}
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