| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You 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.tomcat.util.modeler; |
| |
| import java.util.concurrent.locks.Lock; |
| import java.util.concurrent.locks.ReadWriteLock; |
| import java.util.concurrent.locks.ReentrantReadWriteLock; |
| |
| import javax.management.MBeanNotificationInfo; |
| |
| /** |
| * <p>Internal configuration information for a <code>Notification</code> |
| * descriptor.</p> |
| * |
| * @author Craig R. McClanahan |
| */ |
| public class NotificationInfo extends FeatureInfo { |
| |
| static final long serialVersionUID = -6319885418912650856L; |
| |
| // ----------------------------------------------------- Instance Variables |
| |
| |
| /** |
| * The <code>ModelMBeanNotificationInfo</code> object that corresponds |
| * to this <code>NotificationInfo</code> instance. |
| */ |
| transient MBeanNotificationInfo info = null; |
| protected String notifTypes[] = new String[0]; |
| protected final ReadWriteLock notifTypesLock = new ReentrantReadWriteLock(); |
| |
| // ------------------------------------------------------------- Properties |
| |
| |
| /** |
| * Override the <code>description</code> property setter. |
| * |
| * @param description The new description |
| */ |
| @Override |
| public void setDescription(String description) { |
| super.setDescription(description); |
| this.info = null; |
| } |
| |
| |
| /** |
| * Override the <code>name</code> property setter. |
| * |
| * @param name The new name |
| */ |
| @Override |
| public void setName(String name) { |
| super.setName(name); |
| this.info = null; |
| } |
| |
| |
| /** |
| * The set of notification types for this MBean. |
| */ |
| public String[] getNotifTypes() { |
| Lock readLock = notifTypesLock.readLock(); |
| readLock.lock(); |
| try { |
| return this.notifTypes; |
| } finally { |
| readLock.unlock(); |
| } |
| } |
| |
| |
| // --------------------------------------------------------- Public Methods |
| |
| |
| /** |
| * Add a new notification type to the set managed by an MBean. |
| * |
| * @param notifType The new notification type |
| */ |
| public void addNotifType(String notifType) { |
| |
| Lock writeLock = notifTypesLock.writeLock(); |
| writeLock.lock(); |
| try { |
| |
| String results[] = new String[notifTypes.length + 1]; |
| System.arraycopy(notifTypes, 0, results, 0, notifTypes.length); |
| results[notifTypes.length] = notifType; |
| notifTypes = results; |
| this.info = null; |
| } finally { |
| writeLock.unlock(); |
| } |
| } |
| |
| |
| /** |
| * Create and return a <code>ModelMBeanNotificationInfo</code> object that |
| * corresponds to the attribute described by this instance. |
| */ |
| public MBeanNotificationInfo createNotificationInfo() { |
| |
| // Return our cached information (if any) |
| if (info != null) |
| return info; |
| |
| // Create and return a new information object |
| info = new MBeanNotificationInfo |
| (getNotifTypes(), getName(), getDescription()); |
| //Descriptor descriptor = info.getDescriptor(); |
| //addFields(descriptor); |
| //info.setDescriptor(descriptor); |
| return info; |
| |
| } |
| |
| |
| /** |
| * Return a string representation of this notification descriptor. |
| */ |
| @Override |
| public String toString() { |
| |
| StringBuilder sb = new StringBuilder("NotificationInfo["); |
| sb.append("name="); |
| sb.append(name); |
| sb.append(", description="); |
| sb.append(description); |
| sb.append(", notifTypes="); |
| Lock readLock = notifTypesLock.readLock(); |
| readLock.lock(); |
| try { |
| sb.append(notifTypes.length); |
| } finally { |
| readLock.unlock(); |
| } |
| sb.append("]"); |
| return (sb.toString()); |
| } |
| } |