MethodCacheAfterAdvice.java

package com.jrails.modules.spring.cache.aop;

import java.lang.reflect.Method;
import java.util.List;

import net.sf.ehcache.Cache;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.springframework.aop.AfterReturningAdvice;
import org.springframework.beans.factory.InitializingBean;
import org.springframework.util.Assert;

/**
 *
 * @author arden
 */
public class MethodCacheAfterAdvice implements AfterReturningAdvice, InitializingBean
{
    private static final Log logger = LogFactory.getLog(MethodCacheAfterAdvice.class);

    private Cache cache;

    public void setCache(Cache cache) {
        this.cache = cache;
    }

    public MethodCacheAfterAdvice() {
        super();
    }

    public void afterReturning(Object arg0, Method arg1, Object[] arg2, Object arg3) throws Throwable {
        String className = arg3.getClass().getName();
        List list = cache.getKeys();
        for(int i = 0;i<list.size();i++){
            String cacheKey = String.valueOf(list.get(i));
            if(cacheKey.startsWith(className)){
                cache.remove(cacheKey);
                logger.debug("remove cache " + cacheKey);
            }
        }
    }

    public void afterPropertiesSet() throws Exception {
        Assert.notNull(cache, "Need a cache. Please use setCache(Cache) create it.");
    }

}