spring NotificationListenerBean 源码
spring NotificationListenerBean 代码
文件路径：/spring-context/src/main/java/org/springframework/jmx/export/NotificationListenerBean.java
/*
* Copyright 2002-2017 the original author or authors.
*
* 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
*
* https://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.springframework.jmx.export;
import javax.management.NotificationListener;
import org.springframework.beans.factory.InitializingBean;
import org.springframework.jmx.support.NotificationListenerHolder;
import org.springframework.util.Assert;
/**
* Helper class that aggregates a {@link javax.management.NotificationListener},
* a {@link javax.management.NotificationFilter}, and an arbitrary handback object.
*
* <p>Also provides support for associating the encapsulated
* {@link javax.management.NotificationListener} with any number of
* MBeans from which it wishes to receive
* {@link javax.management.Notification Notifications} via the
* {@link #setMappedObjectNames mappedObjectNames} property.
*
* <p>Note: This class supports Spring bean names as
* {@link #setMappedObjectNames "mappedObjectNames"} as well, as alternative
* to specifying JMX object names. Note that only beans exported by the
* same {@link MBeanExporter} are supported for such bean names.
*
* @author Rob Harrop
* @author Juergen Hoeller
* @since 2.0
* @see MBeanExporter#setNotificationListeners
*/
public class NotificationListenerBean extends NotificationListenerHolder implements InitializingBean {
/**
* Create a new instance of the {@link NotificationListenerBean} class.
*/
public NotificationListenerBean() {
}
/**
* Create a new instance of the {@link NotificationListenerBean} class.
* @param notificationListener the encapsulated listener
*/
public NotificationListenerBean(NotificationListener notificationListener) {
Assert.notNull(notificationListener, "NotificationListener must not be null");
setNotificationListener(notificationListener);
}
@Override
public void afterPropertiesSet() {
if (getNotificationListener() == null) {
throw new IllegalArgumentException("Property 'notificationListener' is required");
}
}
void replaceObjectName(Object originalName, Object newName) {
if (this.mappedObjectNames != null && this.mappedObjectNames.contains(originalName)) {
this.mappedObjectNames.remove(originalName);
this.mappedObjectNames.add(newName);
}
}
}
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