org.springmodules.cache.interceptor.caching.CachingAttributeSourceAdvisor.java Source code

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Here is the source code for org.springmodules.cache.interceptor.caching.CachingAttributeSourceAdvisor.java

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/* 
 * Created on Sep 22, 2004
 *
 * 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.
 *
 * Copyright @2004 the original author or authors.
 */

package org.springmodules.cache.interceptor.caching;

import java.lang.reflect.Method;

import org.springframework.aop.framework.AopConfigException;
import org.springframework.aop.support.StaticMethodMatcherPointcutAdvisor;

/**
 * <p>
 * Advisor driven by a <code>{@link CachingAttributeSource}</code> that tells
 * <code>{@link MetadataCachingInterceptor}</code> which methods should be
 * intercepted.
 * </p>
 * 
 * @author Alex Ruiz
 */
public class CachingAttributeSourceAdvisor extends StaticMethodMatcherPointcutAdvisor {

    private static final long serialVersionUID = 3832897771492356663L;

    /**
     * Retrieves instances of <code>{@link Cached}</code> for intercepted
     * methods.
     */
    private CachingAttributeSource cachingAttributeSource;

    public CachingAttributeSourceAdvisor(MetadataCachingInterceptor i) {
        super(i);
        CachingAttributeSource source = i.getCachingAttributeSource();
        if (source == null)
            throw new AopConfigException("<" + i.getClass().getName() + "> has no <"
                    + CachingAttributeSource.class.getName() + "> configured");
        cachingAttributeSource = source;
    }

    public final boolean matches(Method method, Class targetClass) {
        Cached attribute = cachingAttributeSource.attribute(method, targetClass);
        return (attribute != null);
    }
}