/*
* JBoss, Home of Professional Open Source
* 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.aop.advice;
import org.jboss.aop.Advisor;
import org.jboss.aop.ClassAdvisor;
import org.jboss.aop.GeneratedClassAdvisor;
import org.jboss.aop.joinpoint.FieldJoinpoint;
import org.jboss.aop.joinpoint.Joinpoint;
/**
* Comment
*
* @author <a href="mailto:bill@jboss.org">Bill Burke</a>
* @version $Revision: 62494 $
*/
public class AdviceFactory implements InterceptorFactory
{
private String advice;
private AspectDefinition aspect;
private AdviceType type;
/**
* Creates a factory that generates advice interceptors.
* Use this constructor if you want to record an advice of the
* (@link {@link AdviceType#AROUND default type}.
*
* @param aspect definition of the aspect that contains the advice method
* @param adviceName name of the advice method
*/
public AdviceFactory(AspectDefinition aspect, String adviceName)
{
this(aspect, adviceName, AdviceType.AROUND);
}
/**
* Creates a factory that generates advice interceptors.
* Use this constructor if you want specify the advice type.
*
* @param aspect definition of the aspect that contains the advice method
* @param adviceName name of the advice method
* @param type the type of the advice
*/
public AdviceFactory(AspectDefinition aspect, String adviceName, AdviceType type)
{
this.aspect = aspect;
this.advice = adviceName;
this.type = type;
}
/**
* Returns the definition of the aspect that contains this advice method.
*/
public AspectDefinition getAspect()
{
return aspect;
}
/**
* Returns the name of the advice method.
*/
public String getAdvice()
{
return advice;
}
/**
* Returns the type of the advice.
*/
public AdviceType getType()
{
return type;
}
public boolean isDeployed()
{
return aspect.isDeployed();
}
public Interceptor create(Advisor advisor, Joinpoint joinpoint)
{
if (aspect.getScope() == Scope.PER_VM)
{
try
{
return PerVmAdvice.generateOptimized(joinpoint, advisor.getManager(), advice, aspect);
}
catch (Exception e)
{
throw new RuntimeException(e); //To change body of catch statement use Options | File Templates.
}
}
else if (aspect.getScope() == Scope.PER_CLASS)
{
try
{
return PerClassAdvice.generate(joinpoint, advisor, advice, aspect);
}
catch (Exception e)
{
throw new RuntimeException(e); //To change body of catch statement use Options | File Templates.
}
}
else if (aspect.getScope() == Scope.PER_INSTANCE)
{
return new PerInstanceAdvice(advice, aspect, advisor);
}
else if (aspect.getScope() == Scope.PER_JOINPOINT)
{
try
{
return PerJoinpointAdvice.createInterceptor(advisor, joinpoint, aspect, advice);
}
catch (Exception e)
{
throw new RuntimeException(e); //To change body of catch statement use Options | File Templates.
}
}
else if (aspect.getScope() == Scope.PER_CLASS_JOINPOINT)
{
Object instance = null;
if (advisor instanceof GeneratedClassAdvisor)
{
//Generated advisors handle PER_CLASS_JOINPOINT slightly differently
instance = ((GeneratedClassAdvisor)advisor).getPerClassJoinpointAspect(aspect, joinpoint);
if (instance == null)
{
((GeneratedClassAdvisor)advisor).addPerClassJoinpointAspect(aspect, joinpoint);
instance = ((GeneratedClassAdvisor)advisor).getPerClassJoinpointAspect(aspect, joinpoint);
}
}
else if (joinpoint instanceof FieldJoinpoint)
{
FieldJoinpoint field = (FieldJoinpoint) joinpoint;
ClassAdvisor classAdvisor = (ClassAdvisor) advisor;
instance = classAdvisor.getFieldAspect(field, aspect);
}
else
{
instance = aspect.getFactory().createPerJoinpoint(advisor, joinpoint);
}
try
{
return PerVmAdvice.generateInterceptor(joinpoint, instance, advice);
}
catch (Exception e)
{
throw new RuntimeException(e);
}
}
else
{
//if (aspect.getScope() == null) System.err.println("scope is null: " + aspect.getName() + "." + advice);
}
return null;
}
public String getName()
{
return aspect.getName() + "." + advice;
}
public boolean equals(Object obj)
{
if (this == obj) return true;
if (!(obj instanceof AdviceFactory)) return false;
AspectDefinition otherAspect = ((AdviceFactory)obj).getAspect();
if (!this.aspect.getName().equals(otherAspect.getName())) return false;
if (!this.aspect.getFactory().getName().equals(otherAspect.getFactory().getName()))return false;
if (!this.advice.equals(((AdviceFactory)obj).advice))return false;
return true;
}
}