/*
 * Copyright 2002-2016 the original author or authors.
 *
 * 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
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package org.springframework.cache.interceptor;

import java.io.Serializable;
import java.lang.reflect.Method;
import java.util.ArrayList;
import java.util.Collection;

import org.springframework.lang.Nullable;
import org.springframework.util.Assert;

Composite CacheOperationSource implementation that iterates over a given array of CacheOperationSource instances.
Author:Costin Leau
Since:3.1
/** * Composite {@link CacheOperationSource} implementation that iterates * over a given array of {@code CacheOperationSource} instances. * * @author Costin Leau * @since 3.1 */
@SuppressWarnings("serial") public class CompositeCacheOperationSource implements CacheOperationSource, Serializable { private final CacheOperationSource[] cacheOperationSources;
Create a new CompositeCacheOperationSource for the given sources.
Params:
  • cacheOperationSources – the CacheOperationSource instances to combine
/** * Create a new CompositeCacheOperationSource for the given sources. * @param cacheOperationSources the CacheOperationSource instances to combine */
public CompositeCacheOperationSource(CacheOperationSource... cacheOperationSources) { Assert.notEmpty(cacheOperationSources, "cacheOperationSources array must not be empty"); this.cacheOperationSources = cacheOperationSources; }
Return the CacheOperationSource instances that this CompositeCacheOperationSource combines.
/** * Return the {@code CacheOperationSource} instances that this * {@code CompositeCacheOperationSource} combines. */
public final CacheOperationSource[] getCacheOperationSources() { return this.cacheOperationSources; } @Override @Nullable public Collection<CacheOperation> getCacheOperations(Method method, @Nullable Class<?> targetClass) { Collection<CacheOperation> ops = null; for (CacheOperationSource source : this.cacheOperationSources) { Collection<CacheOperation> cacheOperations = source.getCacheOperations(method, targetClass); if (cacheOperations != null) { if (ops == null) { ops = new ArrayList<>(); } ops.addAll(cacheOperations); } } return ops; } }