CacheEventListenerRegistry.java

/**
 * 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;

import net.sf.ehcache.event.CacheEventListener;

public class CacheEventListenerRegistry {

    private List<CacheEventListener> eventListeners;

    public CacheEventListenerRegistry() {
    }

    public CacheEventListenerRegistry(List<CacheEventListener> eventListeners) {
        this.eventListeners = eventListeners;
    }

    public void addCacheEventListener(CacheEventListener listener) {
        getEventListeners().add(listener);
    }

    public synchronized List<CacheEventListener> getEventListeners() {
        if (eventListeners == null) {
            eventListeners = new ArrayList<CacheEventListener>();
        }
        return eventListeners;
    }

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