author | devjani.ray@oracle.com <devjani.ray@oracle.com> |
Wed, 30 Oct 2013 16:53:48 -0400 | |
branch | s11-update |
changeset 2805 | 4888f6212f94 |
parent 827 | components/visual-panels/core/src/java/vpanels/panel/com/oracle/solaris/vp/panel/common/MXBeanTracker.java@0944d8c0158b |
permissions | -rw-r--r-- |
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/* |
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* CDDL HEADER START |
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* |
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* The contents of this file are subject to the terms of the |
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* Common Development and Distribution License (the "License"). |
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* You may not use this file except in compliance with the License. |
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* |
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* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE |
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* or http://www.opensolaris.org/os/licensing. |
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* See the License for the specific language governing permissions |
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* and limitations under the License. |
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* |
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* When distributing Covered Code, include this CDDL HEADER in each |
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* file and include the License file at usr/src/OPENSOLARIS.LICENSE. |
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* If applicable, add the following below this CDDL HEADER, with the |
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* fields enclosed by brackets "[]" replaced with your own identifying |
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* information: Portions Copyright [yyyy] [name of copyright owner] |
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* |
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* CDDL HEADER END |
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*/ |
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|
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/* |
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* Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved. |
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*/ |
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package com.oracle.solaris.vp.panel.common; |
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import java.beans.PropertyChangeEvent; |
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import java.io.IOException; |
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import java.util.logging.*; |
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import com.oracle.solaris.rad.client.ADRName; |
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import com.oracle.solaris.rad.client.RadException; |
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import com.oracle.solaris.rad.connect.Connection; |
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import com.oracle.solaris.vp.util.misc.ObjectUtil; |
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import com.oracle.solaris.vp.util.misc.event.PropertyChangeListeners; |
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|
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/** |
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* The {@code BeanTracker} is a {@link ConnectionTracker} that automatically |
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* creates and re-creates an {@link #getBean Bean} after changes in the {@link |
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* #setServerConnection ServerConnection} or {@link #setObjectName |
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* ObjectName}. |
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* </p> |
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* A property change notification is sent out when the tracked {@code Bean} |
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* changes. |
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*/ |
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public class BeanTracker<T> extends ConnectionTracker { |
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// |
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// Static data |
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// |
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/** |
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* The name of the property that changes with {@link #setBean}. |
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*/ |
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public static final String PROPERTY_BEAN = "bean"; |
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// |
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// Instance data |
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// |
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private Class<T> clazz; |
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private T bean; |
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// |
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// Constructors |
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// |
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|
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public BeanTracker(ADRName aName, Class<T> clazz) |
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{ |
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super(aName); |
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try { |
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setClass(clazz); |
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|
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// Impossible because ServerConnection not yet set |
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} catch (TrackerException impossible) { |
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} |
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} |
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|
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public BeanTracker(ADRName aName, Class<T> clazz, |
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ClientContext context) throws TrackerException { |
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|
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this(aName, clazz); |
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setClientContext(context); |
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} |
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// |
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// ConnectionTracker methods |
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// |
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|
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@Override |
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public void setServerConnection(Connection conn) |
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throws TrackerException { |
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|
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if (getServerConnection() != conn) { |
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super.setServerConnection(conn); |
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setBean(); |
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} |
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} |
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@Override |
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public void setObjectName(ADRName aName) |
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throws TrackerException { |
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|
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if (!ObjectUtil.equals(getObjectName(), aName)) { |
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super.setObjectName(aName); |
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setBean(); |
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} |
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} |
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// |
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// BeanTracker methods |
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// |
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protected T createBean() throws RadException, IOException { |
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T bean = null; |
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Connection conn = getServerConnection(); |
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ADRName aname = getObjectName(); |
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if (conn != null && aname != null && clazz != null) { |
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bean = conn.getObject(aname); |
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} |
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return bean; |
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} |
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public T getBean() { |
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return bean; |
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} |
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public Class<T> getBeanClass() { |
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return clazz; |
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} |
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public void setBean(T bean) { |
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if (this.bean != bean) { |
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PropertyChangeEvent e = new PropertyChangeEvent( |
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this, PROPERTY_BEAN, this.bean, bean); |
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this.bean = bean; |
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getPropertyChangeListeners().propertyChange(e); |
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} |
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} |
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// |
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// Private methods |
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// |
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private void setClass(Class<T> clazz) |
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throws TrackerException { |
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this.clazz = clazz; |
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setBean(); |
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} |
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private void setBean() throws TrackerException { |
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T bean = null; |
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String message = null; |
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Throwable cause = null; |
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try { |
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bean = createBean(); |
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} catch (RadException e) { |
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cause = e; |
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message = "Error getting object information for: " |
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+ getObjectName(); |
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} catch (IOException e) { |
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cause = e; |
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message = "Error contacting server while " |
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+ "creating proxy for: " + clazz.getSimpleName(); |
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} |
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169 |
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setBean(bean); |
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|
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if (cause != null) { |
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Logger.getLogger(getClass().getName()).log( |
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Level.SEVERE, message, cause); |
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throw new TrackerException(cause); |
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} |
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} |
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} |