org.apache.hadoop.hbase.zookeeper.WatcherWrapper.java Source code

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Here is the source code for org.apache.hadoop.hbase.zookeeper.WatcherWrapper.java

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/**
 * Copyright 2009 The Apache Software Foundation
 *
 * 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.hadoop.hbase.zookeeper;

import org.apache.zookeeper.WatchedEvent;
import org.apache.zookeeper.Watcher;

/**
 * Place-holder Watcher.
 * Does nothing currently.
 */
public class WatcherWrapper implements Watcher {
    private final Watcher otherWatcher;

    /**
     * Construct with a Watcher to pass events to.
     * @param otherWatcher Watcher to pass events to.
     */
    public WatcherWrapper(Watcher otherWatcher) {
        this.otherWatcher = otherWatcher;
    }

    /**
     * @param event WatchedEvent from ZooKeeper.
     */
    public void process(WatchedEvent event) {
        if (otherWatcher != null) {
            otherWatcher.process(event);
        }
    }

}