/*
* Copyright 2002-2008 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.config;
import org.springframework.beans.MutablePropertyValues;
import org.springframework.beans.factory.config.BeanDefinition;
import org.springframework.beans.factory.config.BeanReference;
import org.springframework.beans.factory.parsing.AbstractComponentDefinition;
import org.springframework.util.Assert;
/**
* {@link org.springframework.beans.factory.parsing.ComponentDefinition}
* that bridges the gap between the advisor bean definition configured
* by the <code><aop:advisor></code> tag and the component definition
* infrastructure.
*
* @author Rob Harrop
* @author Juergen Hoeller
* @since 2.0
*/
public class AdvisorComponentDefinition extends AbstractComponentDefinition {
private final String advisorBeanName;
private final BeanDefinition advisorDefinition;
private String description;
private BeanReference[] beanReferences;
private BeanDefinition[] beanDefinitions;
public AdvisorComponentDefinition(String advisorBeanName, BeanDefinition advisorDefinition) {
this(advisorBeanName, advisorDefinition, null);
}
public AdvisorComponentDefinition(
String advisorBeanName, BeanDefinition advisorDefinition, BeanDefinition pointcutDefinition) {
Assert.notNull(advisorBeanName, "'advisorBeanName' must not be null");
Assert.notNull(advisorDefinition, "'advisorDefinition' must not be null");
this.advisorBeanName = advisorBeanName;
this.advisorDefinition = advisorDefinition;
unwrapDefinitions(advisorDefinition, pointcutDefinition);
}
private void unwrapDefinitions(BeanDefinition advisorDefinition, BeanDefinition pointcutDefinition) {
MutablePropertyValues pvs = advisorDefinition.getPropertyValues();
BeanReference adviceReference = (BeanReference) pvs.getPropertyValue("adviceBeanName").getValue();
if (pointcutDefinition != null) {
this.beanReferences = new BeanReference[] {adviceReference};
this.beanDefinitions = new BeanDefinition[] {advisorDefinition, pointcutDefinition};
this.description = buildDescription(adviceReference, pointcutDefinition);
}
else {
BeanReference pointcutReference = (BeanReference) pvs.getPropertyValue("pointcut").getValue();
this.beanReferences = new BeanReference[] {adviceReference, pointcutReference};
this.beanDefinitions = new BeanDefinition[] {advisorDefinition};
this.description = buildDescription(adviceReference, pointcutReference);
}
}
private String buildDescription(BeanReference adviceReference, BeanDefinition pointcutDefinition) {
return new StringBuilder("Advisor <advice(ref)='").
append(adviceReference.getBeanName()).append("', pointcut(expression)=[").
append(pointcutDefinition.getPropertyValues().getPropertyValue("expression").getValue()).
append("]>").toString();
}
private String buildDescription(BeanReference adviceReference, BeanReference pointcutReference) {
return new StringBuilder("Advisor <advice(ref)='").
append(adviceReference.getBeanName()).append("', pointcut(ref)='").
append(pointcutReference.getBeanName()).append("'>").toString();
}
public String getName() {
return this.advisorBeanName;
}
@Override
public String getDescription() {
return this.description;
}
@Override
public BeanDefinition[] getBeanDefinitions() {
return this.beanDefinitions;
}
@Override
public BeanReference[] getBeanReferences() {
return this.beanReferences;
}
public Object getSource() {
return this.advisorDefinition.getSource();
}
}
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