001/*
002 * Copyright 2002-2018 the original author or authors.
003 *
004 * Licensed under the Apache License, Version 2.0 (the "License");
005 * you may not use this file except in compliance with the License.
006 * You may obtain a copy of the License at
007 *
008 *      https://www.apache.org/licenses/LICENSE-2.0
009 *
010 * Unless required by applicable law or agreed to in writing, software
011 * distributed under the License is distributed on an "AS IS" BASIS,
012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013 * See the License for the specific language governing permissions and
014 * limitations under the License.
015 */
016
017package org.springframework.cache.jcache.interceptor;
018
019import java.io.Serializable;
020import java.lang.reflect.Method;
021import java.util.function.Supplier;
022
023import org.aopalliance.intercept.MethodInterceptor;
024import org.aopalliance.intercept.MethodInvocation;
025
026import org.springframework.cache.interceptor.CacheErrorHandler;
027import org.springframework.cache.interceptor.CacheOperationInvoker;
028import org.springframework.cache.interceptor.SimpleCacheErrorHandler;
029import org.springframework.lang.Nullable;
030import org.springframework.util.function.SingletonSupplier;
031
032/**
033 * AOP Alliance MethodInterceptor for declarative cache
034 * management using JSR-107 caching annotations.
035 *
036 * <p>Derives from the {@link JCacheAspectSupport} class which
037 * contains the integration with Spring's underlying caching API.
038 * JCacheInterceptor simply calls the relevant superclass method.
039 *
040 * <p>JCacheInterceptors are thread-safe.
041 *
042 * @author Stephane Nicoll
043 * @author Juergen Hoeller
044 * @since 4.1
045 * @see org.springframework.cache.interceptor.CacheInterceptor
046 */
047@SuppressWarnings("serial")
048public class JCacheInterceptor extends JCacheAspectSupport implements MethodInterceptor, Serializable {
049
050        /**
051         * Construct a new {@code JCacheInterceptor} with the default error handler.
052         */
053        public JCacheInterceptor() {
054        }
055
056        /**
057         * Construct a new {@code JCacheInterceptor} with the given error handler.
058         * @param errorHandler a supplier for the error handler to use,
059         * applying the default error handler if the supplier is not resolvable
060         * @since 5.1
061         */
062        public JCacheInterceptor(@Nullable Supplier<CacheErrorHandler> errorHandler) {
063                this.errorHandler = new SingletonSupplier<>(errorHandler, SimpleCacheErrorHandler::new);
064        }
065
066
067        @Override
068        @Nullable
069        public Object invoke(final MethodInvocation invocation) throws Throwable {
070                Method method = invocation.getMethod();
071
072                CacheOperationInvoker aopAllianceInvoker = () -> {
073                        try {
074                                return invocation.proceed();
075                        }
076                        catch (Throwable ex) {
077                                throw new CacheOperationInvoker.ThrowableWrapper(ex);
078                        }
079                };
080
081                try {
082                        return execute(aopAllianceInvoker, invocation.getThis(), method, invocation.getArguments());
083                }
084                catch (CacheOperationInvoker.ThrowableWrapper th) {
085                        throw th.getOriginal();
086                }
087        }
088
089}