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.interceptor; 018 019import java.util.Collection; 020 021import org.springframework.cache.Cache; 022import org.springframework.cache.CacheManager; 023import org.springframework.lang.Nullable; 024 025/** 026 * A simple {@link CacheResolver} that resolves the {@link Cache} instance(s) 027 * based on a configurable {@link CacheManager} and the name of the 028 * cache(s) as provided by {@link BasicOperation#getCacheNames() getCacheNames()}. 029 * 030 * @author Stephane Nicoll 031 * @author Juergen Hoeller 032 * @since 4.1 033 * @see BasicOperation#getCacheNames() 034 */ 035public class SimpleCacheResolver extends AbstractCacheResolver { 036 037 /** 038 * Construct a new {@code SimpleCacheResolver}. 039 * @see #setCacheManager 040 */ 041 public SimpleCacheResolver() { 042 } 043 044 /** 045 * Construct a new {@code SimpleCacheResolver} for the given {@link CacheManager}. 046 * @param cacheManager the CacheManager to use 047 */ 048 public SimpleCacheResolver(CacheManager cacheManager) { 049 super(cacheManager); 050 } 051 052 053 @Override 054 protected Collection<String> getCacheNames(CacheOperationInvocationContext<?> context) { 055 return context.getOperation().getCacheNames(); 056 } 057 058 059 /** 060 * Return a {@code SimpleCacheResolver} for the given {@link CacheManager}. 061 * @param cacheManager the CacheManager (potentially {@code null}) 062 * @return the SimpleCacheResolver ({@code null} if the CacheManager was {@code null}) 063 * @since 5.1 064 */ 065 @Nullable 066 static SimpleCacheResolver of(@Nullable CacheManager cacheManager) { 067 return (cacheManager != null ? new SimpleCacheResolver(cacheManager) : null); 068 } 069 070}