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/*
* Copyright 2002-2013 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.beans.factory.aspectj;
import org.aspectj.lang.annotation.SuppressAjWarnings;
import org.aspectj.lang.annotation.control.CodeGenerationHint;
/**
* Abstract base aspect that can perform Dependency
* Injection on objects, however they may be created.
*
* @author Ramnivas Laddad
* @since 2.5.2
*/
public abstract aspect AbstractDependencyInjectionAspect {
/**
* Select construction join points for objects to inject dependencies
*/
public abstract pointcut beanConstruction(Object bean);
/**
* Select deserialization join points for objects to inject dependencies
*/
public abstract pointcut beanDeserialization(Object bean);
/**
* Select join points in a configurable bean
*/
public abstract pointcut inConfigurableBean();
/**
* Select join points in beans to be configured prior to construction?
* By default, use post-construction injection matching the default in the Configurable annotation.
*/
public pointcut preConstructionConfiguration() : if(false);
/**
* Select the most-specific initialization join point
* (most concrete class) for the initialization of an instance.
*/
@CodeGenerationHint(ifNameSuffix="6f1")
public pointcut mostSpecificSubTypeConstruction() :
if(thisJoinPoint.getSignature().getDeclaringType() == thisJoinPoint.getThis().getClass());
/**
* Select least specific super type that is marked for DI (so that injection occurs only once with pre-construction inejection
*/
public abstract pointcut leastSpecificSuperTypeConstruction();
/**
* Configure the bean
*/
public abstract void configureBean(Object bean);
private pointcut preConstructionCondition() :
leastSpecificSuperTypeConstruction() && preConstructionConfiguration();
private pointcut postConstructionCondition() :
mostSpecificSubTypeConstruction() && !preConstructionConfiguration();
/**
* Pre-construction configuration.
*/
@SuppressAjWarnings("adviceDidNotMatch")
before(Object bean) :
beanConstruction(bean) && preConstructionCondition() && inConfigurableBean() {
configureBean(bean);
}
/**
* Post-construction configuration.
*/
@SuppressAjWarnings("adviceDidNotMatch")
after(Object bean) returning :
beanConstruction(bean) && postConstructionCondition() && inConfigurableBean() {
configureBean(bean);
}
/**
* Post-deserialization configuration.
*/
@SuppressAjWarnings("adviceDidNotMatch")
after(Object bean) returning :
beanDeserialization(bean) && inConfigurableBean() {
configureBean(bean);
}
}
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