openjmsqueue.java

OpenJMS是一个开源的Java Message Service API 1.0.2 规范的实现,它包含有以下特性： *. 它既支持点到点（point-to-point）（PTP）模型和发布/订

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 *
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 * ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT
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 * EXOFFICE TECHNOLOGIES OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
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 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
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 *
 * Copyright 2001,2003 (C) Exoffice Technologies Inc. All Rights Reserved.
 *
 * $Id: OpenJMSQueue.java,v 1.1 2004/11/26 01:51:15 tanderson Exp $
 *
 * Date         Author  Changes
 * $Date	    jimm    Created
 */


package org.exolab.jms.tools.admin;

import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

import javax.swing.JMenuItem;
import javax.swing.JOptionPane;
import javax.swing.JPopupMenu;
import javax.swing.JTree;


/**
 * Extends the OpenJMSDestination node and defines a queue specific node
 *
 * @version     $Revision: 1.1 $ $Date: 2004/11/26 01:51:15 $
 * @author      <a href="mailto:[e-mail]">Jim Mourikis</a>
 * @see         OpenJMSObject
 * @see         AdminMgr
 */
public class OpenJMSQueue
    extends OpenJMSObject {

    /**
     * Construct a node with the specified queue name and the a reference
     * to the parent node in the tree.
     *
     * @param name This queue name
     * @param tree The parent tree that this node will belong too
     *
     */
    public OpenJMSQueue(String name, JTree tree) {
        super(name, tree);
    }

    /**
     * Create the menu for all queue and set up the Action events for
     * each menu item. Since menus are shared, the callbacks called are
     * static. Once a menu is slected, the slected node can be determined
     * from the parent object.
     *
     */
    protected void createCommands() {
        _commands = new JPopupMenu();
        JMenuItem m = new JMenuItem("Delete Queue");
        m.addActionListener(new ActionListener() {

            public void actionPerformed(ActionEvent evt) {
                deleteQueue();
            }
        }
        );
        _commands.add(m);
    }

    /**
     * No operation
     */
    public void update() {
    }

    /**
     * Delete the selected queue object. Display a confirmation dialog
     * and wait for its return. If the user has confirmed the action, first
     * delete it from the database and if that is successful remove the node
     * from the tree.
     *
     * <P>Note: deleting a queue/topic also deletes all consumers of this
     * queue/topic.
     *
     */
    static private void deleteQueue() {
        OpenJMSQueue This = (OpenJMSQueue) getInstanceSelected();
        QueryDialog.instance().display
            ("Are you sure you want to delete \nselected Queue: "
            + This._name);
        if (org.exolab.jms.tools.admin.QueryDialog.instance().isConfirmed()) {
            if (AbstractAdminConnection.instance().removeDestination(
                This._name)) {
                This.removeFromParent();
                This.refresh();
            } else {
                JOptionPane.showMessageDialog
                    (_tree, "Failed to destroy Queue",
                        "Destroy Queue Error", JOptionPane.ERROR_MESSAGE);
            }
        }
    }

} //-- OpenJMSQueue