001 /* 002 * Licensed to the Apache Software Foundation (ASF) under one 003 * or more contributor license agreements. See the NOTICE file 004 * distributed with this work for additional information 005 * regarding copyright ownership. The ASF licenses this file 006 * to you under the Apache License, Version 2.0 (the 007 * "License"); you may not use this file except in compliance 008 * with the License. You may obtain a copy of the License at 009 * 010 * http://www.apache.org/licenses/LICENSE-2.0 011 * 012 * Unless required by applicable law or agreed to in writing, 013 * software distributed under the License is distributed on an 014 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 015 * KIND, either express or implied. See the License for the 016 * specific language governing permissions and limitations 017 * under the License. 018 */ 019 020 // 021 // This source code implements specifications defined by the Java 022 // Community Process. In order to remain compliant with the specification 023 // DO NOT add / change / or delete method signatures! 024 // 025 026 package javax.enterprise.deploy.model; 027 028 import java.beans.PropertyChangeEvent; 029 030 /** 031 * An Event class describing DDBeans being added to or removed from a J2EE 032 * application, or updated in place. 033 * 034 * @version $Rev: 467553 $ $Date: 2006-10-25 06:01:51 +0200 (Mi, 25. Okt 2006) $ 035 */ 036 public class XpathEvent { 037 /** 038 * Adding a DDBean 039 */ 040 public static final Object BEAN_ADDED = new Object(); 041 /** 042 * Removing a DDBean 043 */ 044 public static final Object BEAN_REMOVED = new Object(); 045 /** 046 * Changing a DDBean 047 */ 048 public static final Object BEAN_CHANGED = new Object(); 049 050 private PropertyChangeEvent pce; 051 private DDBean bean; 052 private Object type; 053 054 /** 055 * A description of a change in the DDBean tree. 056 * 057 * @param bean The DDBean being added, removed, or updated. 058 * @param type Indicates whether this is an add, remove, or update event. 059 */ 060 public XpathEvent(DDBean bean, Object type) { 061 this.bean = bean; 062 this.type = type; 063 } 064 065 /** 066 * Gets the underlying property change event, with new and 067 * old values. This is typically used for change events. 068 * It is not in the public API, but is included in the 069 * downloadable JSR-88 classes. 070 */ 071 public PropertyChangeEvent getChangeEvent() { 072 return pce; 073 } 074 075 /** 076 * Sets the underlying property change event, with new and 077 * old values. This is typically used for change events. 078 * It is not in the public API, but is included in the 079 * downloadable JSR-88 classes. 080 * 081 * @param pce The property change event that triggered this XpathEvent. 082 */ 083 public void setChangeEvent(PropertyChangeEvent pce) { 084 this.pce = pce; 085 } 086 087 /** 088 * The bean being added/removed/changed. 089 * 090 * @return The bean being added/removed/changed. 091 */ 092 public DDBean getBean() { 093 return bean; 094 } 095 096 /** 097 * Is this an add event? 098 * 099 * @return <code>true</code> if this is an add event. 100 */ 101 public boolean isAddEvent() { 102 return BEAN_ADDED == type; 103 } 104 105 /** 106 * Is this a remove event? 107 * 108 * @return <code>true</code> if this is a remove event. 109 */ 110 public boolean isRemoveEvent() { 111 return BEAN_REMOVED == type; 112 } 113 114 /** 115 * Is this a change event? 116 * 117 * @return <code>true</code> if this is a change event. 118 */ 119 public boolean isChangeEvent() { 120 return BEAN_CHANGED == type; 121 } 122 }