/*

  * 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.commons.pipeline.event;

 import java.util.EventObject;

 /**

  * This event is used to signal the availability of the specified key. This is

  * usually used for inter-branch synchronization using the

  * {@link org.apache.commons.pipeline.stage.RaiseKeyAvailableEventStage RaiseKeyAvailableEventStage}

  * and/or the {@link org.apache.commons.pipeline.stage.KeyWaitBufferStage KeyWaitBufferStage}.

  */

 public class KeyAvailableEvent<T> extends EventObject {

     /**

          * 

          */

         private static final long serialVersionUID = -7704631412431162164L;

     private T key;

     /** Creates a new instance of KeyAvailableEvent */

     public KeyAvailableEvent(Object source, T key) {

         super(source);

         this.key = key;

     }

     /**

      * Returns the key.

      */

     public T getKey() {

         return this.key;

     }

 }