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/*
* Copyright 2002-2014 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.cache.aspectj;
import java.lang.reflect.Method;
import org.aspectj.lang.annotation.SuppressAjWarnings;
import org.aspectj.lang.reflect.MethodSignature;
import org.springframework.beans.factory.DisposableBean;
import org.springframework.cache.interceptor.CacheAspectSupport;
import org.springframework.cache.interceptor.CacheOperationInvoker;
import org.springframework.cache.interceptor.CacheOperationSource;
/**
* Abstract superaspect for AspectJ cache aspects. Concrete subaspects will implement the
* {@link #cacheMethodExecution} pointcut using a strategy such as Java 5 annotations.
*
* <p>Suitable for use inside or outside the Spring IoC container. Set the
* {@link #setCacheManager cacheManager} property appropriately, allowing use of any cache
* implementation supported by Spring.
*
* <p><b>NB:</b> If a method implements an interface that is itself cache annotated, the
* relevant Spring cache definition will <i>not</i> be resolved.
*
* @author Costin Leau
* @author Stephane Nicoll
* @since 3.1
*/
public abstract aspect AbstractCacheAspect extends CacheAspectSupport implements DisposableBean {
protected AbstractCacheAspect() {
}
/**
* Construct object using the given caching metadata retrieval strategy.
* @param cos {@link CacheOperationSource} implementation, retrieving Spring cache
* metadata for each joinpoint.
*/
protected AbstractCacheAspect(CacheOperationSource... cos) {
setCacheOperationSources(cos);
}
@Override
public void destroy() {
clearMetadataCache(); // An aspect is basically a singleton
}
@SuppressAjWarnings("adviceDidNotMatch")
Object around(final Object cachedObject) : cacheMethodExecution(cachedObject) {
MethodSignature methodSignature = (MethodSignature) thisJoinPoint.getSignature();
Method method = methodSignature.getMethod();
CacheOperationInvoker aspectJInvoker = new CacheOperationInvoker() {
public Object invoke() {
return proceed(cachedObject);
}
};
return execute(aspectJInvoker, thisJoinPoint.getTarget(), method, thisJoinPoint.getArgs());
}
/**
* Concrete subaspects must implement this pointcut, to identify cached methods.
*/
protected abstract pointcut cacheMethodExecution(Object cachedObject);
}
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