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Camel Cache support based on ehCache

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/**
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You 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
 * limitations under the License.
 */
package org.apache.camel.component.cache;

import java.util.ArrayList;
import java.util.List;

public class CacheLoaderRegistry {

    private List registeredCacheLoaders;

    public CacheLoaderRegistry() {
    }

    public CacheLoaderRegistry(List registeredCacheLoaders) {
        this.registeredCacheLoaders = registeredCacheLoaders;
    }

    public void addCacheLoader(CacheLoaderWrapper cacheLoader) {
        getCacheLoaders().add(cacheLoader);
    }

    public synchronized List getCacheLoaders() {
        if (registeredCacheLoaders == null) {
            registeredCacheLoaders = new ArrayList();
        }
        return registeredCacheLoaders;
    }

    public int size() {
        return registeredCacheLoaders.size();
    }
}