001/* 002 * Copyright 2002-2012 the original author or authors. 003 * 004 * Licensed under the Apache License, Version 2.0 (the "License"); 005 * you may not use this file except in compliance with the License. 006 * You may obtain a copy of the License at 007 * 008 * https://www.apache.org/licenses/LICENSE-2.0 009 * 010 * Unless required by applicable law or agreed to in writing, software 011 * distributed under the License is distributed on an "AS IS" BASIS, 012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 013 * See the License for the specific language governing permissions and 014 * limitations under the License. 015 */ 016 017package org.springframework.jmx.export; 018 019import javax.management.NotificationListener; 020 021import org.springframework.beans.factory.InitializingBean; 022import org.springframework.jmx.support.NotificationListenerHolder; 023import org.springframework.util.Assert; 024 025/** 026 * Helper class that aggregates a {@link javax.management.NotificationListener}, 027 * a {@link javax.management.NotificationFilter}, and an arbitrary handback 028 * object. 029 * 030 * <p>Also provides support for associating the encapsulated 031 * {@link javax.management.NotificationListener} with any number of 032 * MBeans from which it wishes to receive 033 * {@link javax.management.Notification Notifications} via the 034 * {@link #setMappedObjectNames mappedObjectNames} property. 035 * 036 * <p>Note: This class supports Spring bean names as 037 * {@link #setMappedObjectNames "mappedObjectNames"} as well, as alternative 038 * to specifying JMX object names. Note that only beans exported by the 039 * same {@link MBeanExporter} are supported for such bean names. 040 * 041 * @author Rob Harrop 042 * @author Juergen Hoeller 043 * @since 2.0 044 * @see MBeanExporter#setNotificationListeners 045 */ 046public class NotificationListenerBean extends NotificationListenerHolder implements InitializingBean { 047 048 /** 049 * Create a new instance of the {@link NotificationListenerBean} class. 050 */ 051 public NotificationListenerBean() { 052 } 053 054 /** 055 * Create a new instance of the {@link NotificationListenerBean} class. 056 * @param notificationListener the encapsulated listener 057 */ 058 public NotificationListenerBean(NotificationListener notificationListener) { 059 Assert.notNull(notificationListener, "NotificationListener must not be null"); 060 setNotificationListener(notificationListener); 061 } 062 063 064 @Override 065 public void afterPropertiesSet() { 066 if (getNotificationListener() == null) { 067 throw new IllegalArgumentException("Property 'notificationListener' is required"); 068 } 069 } 070 071 void replaceObjectName(Object originalName, Object newName) { 072 if (this.mappedObjectNames != null && this.mappedObjectNames.contains(originalName)) { 073 this.mappedObjectNames.remove(originalName); 074 this.mappedObjectNames.add(newName); 075 } 076 } 077 078}