    001// Copyright 2014 The Apache Software Foundation
    002//
    003// Licensed under the Apache License, Version 2.0 (the "License");
    004// you may not use this file except in compliance with the License.
    005// You may obtain a copy of the License at
    006//
    007// http://www.apache.org/licenses/LICENSE-2.0
    008//
    009// Unless required by applicable law or agreed to in writing, software
    010// distributed under the License is distributed on an "AS IS" BASIS,
    011// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    012// See the License for the specific language governing permissions and
    013// limitations under the License.
    014package org.apache.tapestry5.jcache.module;
    015
    016import java.lang.annotation.Annotation;
    017import java.lang.reflect.Method;
    018
    019import javax.cache.annotation.CacheKeyGenerator;
    020import javax.cache.annotation.CachePut;
    021import javax.cache.annotation.CacheRemove;
    022import javax.cache.annotation.CacheRemoveAll;
    023import javax.cache.annotation.CacheResolverFactory;
    024import javax.cache.annotation.CacheResult;
    025
    026import org.apache.tapestry5.ioc.MethodAdviceReceiver;
    027import org.apache.tapestry5.ioc.ObjectLocator;
    028import org.apache.tapestry5.ioc.ServiceBinder;
    029import org.apache.tapestry5.ioc.annotations.Match;
    030import org.apache.tapestry5.jcache.internal.CacheLookupUtil;
    031import org.apache.tapestry5.jcache.internal.CacheMethodAdvice;
    032import org.apache.tapestry5.jcache.internal.CachePutMethodAdvice;
    033import org.apache.tapestry5.jcache.internal.CacheRemoveAllMethodAdvice;
    034import org.apache.tapestry5.jcache.internal.CacheRemoveMethodAdvice;
    035import org.apache.tapestry5.jcache.internal.CacheResultMethodAdvice;
    036import org.jsr107.ri.annotations.CacheContextSource;
    037import org.jsr107.ri.annotations.DefaultCacheKeyGenerator;
    038import org.jsr107.ri.annotations.DefaultCacheResolverFactory;
    039
    040/**
    041 * Tapestry-IoC module that
    042 */
    043public final class JCacheModule
    044{
    045
    046    private JCacheModule()
    047    {
    048    }
    049
    050    /**
    051     * Declares some services.
    052     *
    053     * @param binder
    054     *            a {@link ServiceBinder}.
    055     */
    056    public static void bind(ServiceBinder binder)
    057    {
    058        binder.bind(CacheKeyGenerator.class, DefaultCacheKeyGenerator.class);
    059        binder.bind(CacheResolverFactory.class, DefaultCacheResolverFactory.class);
    060        binder.bind(CacheContextSource.class, CacheLookupUtil.class);
    061    }
    062
    063    /**
    064     * Applies the advice to the services.
    065     *
    066     * @param receiver
    067     *            a {@link MethodAdviceReceiver}.
    068     * @param objectLocator
    069     *            an {@link ObjectLocator}.
    070     */
    071    @Match("*")
    072    public static void advise(MethodAdviceReceiver receiver, ObjectLocator objectLocator)
    073    {
    074        advise(CachePut.class, objectLocator.autobuild(CachePutMethodAdvice.class), receiver);
    075        advise(CacheRemoveAll.class, objectLocator.autobuild(CacheRemoveAllMethodAdvice.class),
    076                receiver);
    077        advise(CacheRemove.class, objectLocator.autobuild(CacheRemoveMethodAdvice.class), receiver);
    078        advise(CacheResult.class, objectLocator.autobuild(CacheResultMethodAdvice.class), receiver);
    079    }
    080
    081    private static void advise(Class<? extends Annotation> annotationClass,
    082            CacheMethodAdvice advice, MethodAdviceReceiver methodAdviceReceiver)
    083    {
    084        if (methodAdviceReceiver.getClassAnnotationProvider().getAnnotation(annotationClass) != null)
    085        {
    086            methodAdviceReceiver.adviseAllMethods(advice);
    087        }
    088        else
    089        {
    090            for (Method method : methodAdviceReceiver.getInterface().getMethods())
    091            {
    092                if (methodAdviceReceiver.getMethodAnnotation(method, annotationClass) != null)
    093                {
    094                    methodAdviceReceiver.adviseMethod(method, advice);
    095                }
    096            }
    097        }
    098    }
    099
    100}