/*

  * Copyright 1999-2001,2004 The Apache Software Foundation.

  * 

  * 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

  * limitations under the License.

  */ 

 package org.apache.commons.workflow;

 import java.util.EventObject;

 /**

  * A <strong>ScopeEvent</strong> provides notification to a

  * <code>ScopeListener</code> that a specified event has occurred for

  * the specified scope.

  *

  * @version $Revision: 155475 $ $Date: 2005-02-26 13:31:11 +0000 (Sat, 26 Feb 2005) $

  * @author Craig R. McClanahan

  */

 public class ScopeEvent extends EventObject {

     // ----------------------------------------------------------- Constructors

     /**

      * Construct a new immutable ScopeEvent.

      *

      * @param scope Scope in which this event occurred

      * @param key Bean key on which this event occurred

      * @param value Bean value on which this event occurred

      */

     public ScopeEvent(Scope scope, String key, Object value) {

         super(scope);

         this.scope = scope;

         this.key = key;

         this.value = value;

     }

     // ------------------------------------------------------------- Properties

     /**

      * The bean key upon which this event occurred.

      */

     protected String key = null;

     public String getKey() {

         return (this.key);

     }

     /**

      * The <code>Scope</code> upon which this event occurred.

      */

     protected Scope scope = null;

     public Scope getScope() {

         return (this.scope);

     }

     /**

      * The bean value upon which this event occurred.  For

      * <code>beanReplaced</code> events, this will be the previous value.

      */

     protected Object value = null;

     public Object getValue() {

         return (this.value);

     }

 }