components/visual-panels/core/src/java/vpanels/panel/com/oracle/solaris/vp/panel/common/BeanTracker.java
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/components/visual-panels/core/src/java/vpanels/panel/com/oracle/solaris/vp/panel/common/BeanTracker.java Wed Oct 30 16:53:48 2013 -0400
@@ -0,0 +1,178 @@
+/*
+ * CDDL HEADER START
+ *
+ * The contents of this file are subject to the terms of the
+ * Common Development and Distribution License (the "License").
+ * You may not use this file except in compliance with the License.
+ *
+ * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
+ * or http://www.opensolaris.org/os/licensing.
+ * See the License for the specific language governing permissions
+ * and limitations under the License.
+ *
+ * When distributing Covered Code, include this CDDL HEADER in each
+ * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
+ * If applicable, add the following below this CDDL HEADER, with the
+ * fields enclosed by brackets "[]" replaced with your own identifying
+ * information: Portions Copyright [yyyy] [name of copyright owner]
+ *
+ * CDDL HEADER END
+ */
+
+/*
+ * Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved.
+ */
+
+package com.oracle.solaris.vp.panel.common;
+
+import java.beans.PropertyChangeEvent;
+import java.io.IOException;
+import java.util.logging.*;
+import com.oracle.solaris.rad.client.ADRName;
+import com.oracle.solaris.rad.client.RadException;
+import com.oracle.solaris.rad.connect.Connection;
+import com.oracle.solaris.vp.util.misc.ObjectUtil;
+import com.oracle.solaris.vp.util.misc.event.PropertyChangeListeners;
+
+/**
+ * The {@code BeanTracker} is a {@link ConnectionTracker} that automatically
+ * creates and re-creates an {@link #getBean Bean} after changes in the {@link
+ * #setServerConnection ServerConnection} or {@link #setObjectName
+ * ObjectName}.
+ * </p>
+ * A property change notification is sent out when the tracked {@code Bean}
+ * changes.
+ */
+public class BeanTracker<T> extends ConnectionTracker {
+ //
+ // Static data
+ //
+
+ /**
+ * The name of the property that changes with {@link #setBean}.
+ */
+ public static final String PROPERTY_BEAN = "bean";
+
+ //
+ // Instance data
+ //
+
+ private Class<T> clazz;
+ private T bean;
+
+ //
+ // Constructors
+ //
+
+ public BeanTracker(ADRName aName, Class<T> clazz)
+ {
+ super(aName);
+ try {
+ setClass(clazz);
+
+ // Impossible because ServerConnection not yet set
+ } catch (TrackerException impossible) {
+ }
+ }
+
+ public BeanTracker(ADRName aName, Class<T> clazz,
+ ClientContext context) throws TrackerException {
+
+ this(aName, clazz);
+ setClientContext(context);
+ }
+
+ //
+ // ConnectionTracker methods
+ //
+
+ @Override
+ public void setServerConnection(Connection conn)
+ throws TrackerException {
+
+ if (getServerConnection() != conn) {
+ super.setServerConnection(conn);
+ setBean();
+ }
+ }
+
+ @Override
+ public void setObjectName(ADRName aName)
+ throws TrackerException {
+
+ if (!ObjectUtil.equals(getObjectName(), aName)) {
+ super.setObjectName(aName);
+ setBean();
+ }
+ }
+
+ //
+ // BeanTracker methods
+ //
+
+ protected T createBean() throws RadException, IOException {
+
+ T bean = null;
+ Connection conn = getServerConnection();
+ ADRName aname = getObjectName();
+ if (conn != null && aname != null && clazz != null) {
+ bean = conn.getObject(aname);
+ }
+
+ return bean;
+ }
+
+ public T getBean() {
+ return bean;
+ }
+
+ public Class<T> getBeanClass() {
+ return clazz;
+ }
+
+ public void setBean(T bean) {
+ if (this.bean != bean) {
+ PropertyChangeEvent e = new PropertyChangeEvent(
+ this, PROPERTY_BEAN, this.bean, bean);
+ this.bean = bean;
+ getPropertyChangeListeners().propertyChange(e);
+ }
+ }
+
+ //
+ // Private methods
+ //
+
+ private void setClass(Class<T> clazz)
+ throws TrackerException {
+
+ this.clazz = clazz;
+ setBean();
+ }
+
+ private void setBean() throws TrackerException {
+ T bean = null;
+ String message = null;
+ Throwable cause = null;
+
+ try {
+ bean = createBean();
+ } catch (RadException e) {
+ cause = e;
+ message = "Error getting object information for: "
+ + getObjectName();
+ } catch (IOException e) {
+ cause = e;
+ message = "Error contacting server while "
+ + "creating proxy for: " + clazz.getSimpleName();
+ }
+
+ setBean(bean);
+
+ if (cause != null) {
+ Logger.getLogger(getClass().getName()).log(
+ Level.SEVERE, message, cause);
+ throw new TrackerException(cause);
+ }
+ }
+}