/*
* Copyright 2002-2009 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.annotation;
import java.util.ArrayList;
import java.util.List;
import java.util.regex.Pattern;
import org.springframework.aop.Advisor;
import org.springframework.aop.aspectj.autoproxy.AspectJAwareAdvisorAutoProxyCreator;
import org.springframework.beans.factory.ListableBeanFactory;
import org.springframework.beans.factory.config.ConfigurableListableBeanFactory;
import org.springframework.util.Assert;
/**
* {@link AspectJAwareAdvisorAutoProxyCreator} subclass that processes all AspectJ
* annotation aspects in the current application context, as well as Spring Advisors.
*
* <p>Any AspectJ annotated classes will automatically be recognized, and their
* advice applied if Spring AOP's proxy-based model is capable of applying it.
* This covers method execution joinpoints.
*
* <p>If the <aop:include> element is used, only @AspectJ beans with names matched by
* an include pattern will be considered as defining aspects to use for Spring auto-proxying.
*
* <p>Processing of Spring Advisors follows the rules established in
* {@link org.springframework.aop.framework.autoproxy.AbstractAdvisorAutoProxyCreator}.
*
* @author Rod Johnson
* @author Juergen Hoeller
* @since 2.0
* @see org.springframework.aop.aspectj.annotation.AspectJAdvisorFactory
*/
public class AnnotationAwareAspectJAutoProxyCreator extends AspectJAwareAdvisorAutoProxyCreator {
private List<Pattern> includePatterns;
private AspectJAdvisorFactory aspectJAdvisorFactory = new ReflectiveAspectJAdvisorFactory();
private BeanFactoryAspectJAdvisorsBuilder aspectJAdvisorsBuilder;
/**
* Set a list of regex patterns, matching eligible @AspectJ bean names.
* <p>Default is to consider all @AspectJ beans as eligible.
*/
public void setIncludePatterns(List<String> patterns) {
this.includePatterns = new ArrayList<Pattern>(patterns.size());
for (String patternText : patterns) {
this.includePatterns.add(Pattern.compile(patternText));
}
}
public void setAspectJAdvisorFactory(AspectJAdvisorFactory aspectJAdvisorFactory) {
Assert.notNull(this.aspectJAdvisorFactory, "AspectJAdvisorFactory must not be null");
this.aspectJAdvisorFactory = aspectJAdvisorFactory;
}
@Override
protected void initBeanFactory(ConfigurableListableBeanFactory beanFactory) {
super.initBeanFactory(beanFactory);
this.aspectJAdvisorsBuilder =
new BeanFactoryAspectJAdvisorsBuilderAdapter(beanFactory, this.aspectJAdvisorFactory);
}
@Override
protected List<Advisor> findCandidateAdvisors() {
// Add all the Spring advisors found according to superclass rules.
List<Advisor> advisors = super.findCandidateAdvisors();
// Build Advisors for all AspectJ aspects in the bean factory.
advisors.addAll(this.aspectJAdvisorsBuilder.buildAspectJAdvisors());
return advisors;
}
@Override
protected boolean isInfrastructureClass(Class beanClass) {
// Previously we setProxyTargetClass(true) in the constructor, but that has too
// broad an impact. Instead we now override isInfrastructureClass to avoid proxying
// aspects. I'm not entirely happy with that as there is no good reason not
// to advise aspects, except that it causes advice invocation to go through a
// proxy, and if the aspect implements e.g the Ordered interface it will be
// proxied by that interface and fail at runtime as the advice method is not
// defined on the interface. We could potentially relax the restriction about
// not advising aspects in the future.
return (super.isInfrastructureClass(beanClass) || this.aspectJAdvisorFactory.isAspect(beanClass));
}
/**
* Check whether the given aspect bean is eligible for auto-proxying.
* <p>If no <aop:include> elements were used then "includePatterns" will be
* <code>null</code> and all beans are included. If "includePatterns" is non-null,
* then one of the patterns must match.
*/
protected boolean isEligibleAspectBean(String beanName) {
if (this.includePatterns == null) {
return true;
}
else {
for (Pattern pattern : this.includePatterns) {
if (pattern.matcher(beanName).matches()) {
return true;
}
}
return false;
}
}
/**
* Subclass of BeanFactoryAspectJAdvisorsBuilderAdapter that delegates to
* surrounding AnnotationAwareAspectJAutoProxyCreator facilities.
*/
private class BeanFactoryAspectJAdvisorsBuilderAdapter extends BeanFactoryAspectJAdvisorsBuilder {
public BeanFactoryAspectJAdvisorsBuilderAdapter(
ListableBeanFactory beanFactory, AspectJAdvisorFactory advisorFactory) {
super(beanFactory, advisorFactory);
}
@Override
protected boolean isEligibleBean(String beanName) {
return AnnotationAwareAspectJAutoProxyCreator.this.isEligibleAspectBean(beanName);
}
}
}
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