1 /* 2 * Copyright 1999-2001,2004 The Apache Software Foundation. 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package org.apache.commons.workflow; 18 19 20 import java.util.EventListener; 21 22 23 /** 24 * A <strong>ScopeListener</strong> registers its interest in receiving 25 * <code>ScopeEvent</code> notifications when the occur on a particular 26 * <code>Scope</code> of interest. 27 * 28 * @version $Revision: 155475 $ $Date: 2005-02-26 13:31:11 +0000 (Sat, 26 Feb 2005) $ 29 * @author Craig R. McClanahan 30 */ 31 32 public interface ScopeListener extends EventListener { 33 34 35 // --------------------------------------------------------- Public Methods 36 37 38 /** 39 * Invoked when a new bean was added to this <code>scope</code>. 40 * 41 * @param event The <code>ScopeEvent</code> that has occurred 42 */ 43 public void beanAdded(ScopeEvent event); 44 45 46 /** 47 * Invoked when an existing bean was removed in this <code>scope</code>. 48 * 49 * @param event The <code>ScopeEvent</code> that has occurred 50 */ 51 public void beanRemoved(ScopeEvent event); 52 53 54 /** 55 * Invoked when an existing bean was replaced in this <code>scope</code>. 56 * 57 * @param event The <code>ScopeEvent</code> that has occurred 58 */ 59 public void beanReplaced(ScopeEvent event); 60 61 62 /** 63 * Invoked when the entire Scope is cleared. 64 * 65 * @param event The <code>ScopeEvent</code> that has occurred 66 */ 67 public void scopeCleared(ScopeEvent event); 68 69 70 } 71 72