/***
    * Redistribution and use of this software and associated documentation
    * ("Software"), with or without modification, are permitted provided
    * that the following conditions are met:
    *
    * 1. Redistributions of source code must retain copyright
    *    statements and notices.  Redistributions must also contain a
    *    copy of this document.
    *
   * 2. Redistributions in binary form must reproduce the
   *    above copyright notice, this list of conditions and the
   *    following disclaimer in the documentation and/or other
   *    materials provided with the distribution.
   *
   * 3. The name "Exolab" must not be used to endorse or promote
   *    products derived from this Software without prior written
   *    permission of Exoffice Technologies.  For written permission,
   *    please contact info@exolab.org.
   *
   * 4. Products derived from this Software may not be called "Exolab"
   *    nor may "Exolab" appear in their names without prior written
   *    permission of Exoffice Technologies. Exolab is a registered
   *    trademark of Exoffice Technologies.
   *
   * 5. Due credit should be given to the Exolab Project
   *    (http://www.exolab.org/).
   *
   * THIS SOFTWARE IS PROVIDED BY EXOFFICE TECHNOLOGIES AND CONTRIBUTORS
   * ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT
   * NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
   * FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL
   * EXOFFICE TECHNOLOGIES OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
   * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
   * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
   * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
   * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
   * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
   * OF THE POSSIBILITY OF SUCH DAMAGE.
   *
   * Copyright 2000,2003 (C) Exoffice Technologies Inc. All Rights Reserved.
   *
   * $Id: OfflineConnection.java,v 1.3 2003/08/17 01:32:27 tanderson Exp $
   *
   * Date         Author  Changes
   * $Date	    jimm    Created
   */
  
  
  package org.exolab.jms.tools.admin;
  
  import java.awt.Component;
  import java.sql.Connection;
  import java.util.Enumeration;
  import java.util.Hashtable;
  
  import javax.naming.Context;
  import javax.naming.InitialContext;
  import javax.swing.JFileChooser;
  import javax.swing.JOptionPane;
  import javax.transaction.TransactionManager;
  
  import org.exolab.jms.authentication.User;
  import org.exolab.jms.client.JmsDestination;
  import org.exolab.jms.client.JmsQueue;
  import org.exolab.jms.client.JmsTopic;
  import org.exolab.jms.config.Configuration;
  import org.exolab.jms.config.ConfigurationManager;
  import org.exolab.jms.config.DatabaseConfiguration;
  import org.exolab.jms.persistence.DatabaseService;
  import org.exolab.jms.persistence.PersistenceException;
  
  
  /***
   * Connect directly to the Persistent store to retrieve information and perfrom
   * updates.
   *
   * <P> Note: If the OpenJMSServer is active, this connection will fail, since
   * it requires and exclusive lock on the database to avoid database corruption.
   * Similarly, if this connection is active the OpenJMSServer cannot be started
   * for the same reasons.
   *
   * @version     $Revision: 1.3 $ $Date: 2003/08/17 01:32:27 $
   * @author      <a href="mailto:mourikis@exolab.org">Jim Mourikis</a>
   * @see		AbstractAdminConnection
   * @see		AdminMgr
   */
  public class OfflineConnection extends AbstractAdminConnection {
  
      // The parent Gui
      private Component _parent;
  
      // The deafult JNDI context.
      private Context _context = null;
  
      /***
       * Connect to the RMIAdmin Server if in online mode, or open
       * the database and update the data directly in offline mode.
       *
      * @param online Indicates if we are connecting in online or offline mode.
      * @param parent The component parent.
      * @throws IllegalStateException if {@link ConfigurationManager} has not
      * been initialised
      * @throws OfflineConnectionException When the database cannot be opened
      */
     public OfflineConnection(Component parent)
         throws OfflineConnectionException {
         try {
             if (_instance == null) {
                 _parent = parent;
 
                 Configuration config = ConfigurationManager.getConfig();
 
                 DatabaseConfiguration dbconfig =
                     config.getDatabaseConfiguration();
 
                 // determine the database type and instantiate the appropriate
                 // database adapter
                 if (dbconfig.getRdbmsDatabaseConfiguration() != null) {
                     DatabaseService.instance().getAdapter();
                     _instance = this;
                 } else {
                     JFileChooser chooser = new JFileChooser(".");
                     chooser.setDialogTitle
                         ("Select OpenJMS Database to connect to");
                     chooser.setFileFilter(new DatabaseFilter());
                     int returnVal = chooser.showOpenDialog(parent);
 
                     if (returnVal == JFileChooser.APPROVE_OPTION) {
                         DatabaseService.instance().getAdapter();
                         _instance = this;
                     }
                 }
             } else {
                 throw new org.exolab.jms.tools.admin.OfflineConnectionException("Already connected");
             }
         } catch (Exception err) {
             throw new org.exolab.jms.tools.admin.OfflineConnectionException
                 ("Database Error: " + err.getMessage());
         }
     }
 
     // implementation of AbstractAdminConnection.close
     public void close() {
         DatabaseService.getAdapter().close();
         _instance = null;
     }
 
     // implementation of AbstractAdminConnection.addDurableConsumer
     public boolean addDurableConsumer(String topic, String name) {
         boolean result = false;
         Connection connection = null;
 
         try {
             connection = DatabaseService.getConnection();
             DatabaseService.getAdapter().addDurableConsumer(connection, topic,
                 name);
             connection.commit();
             result = true;
 
         } catch (PersistenceException exception) {
             try {
                 connection.rollback();
             } catch (Exception nested) {
                 // ignore
             }
         } catch (Exception exception) {
             // ignore for the moment
         } finally {
             if (connection != null) {
                 try {
                     connection.close();
                 } catch (Exception nested) {
                     // ignore
                 }
             }
         }
 
         return result;
     }
 
     // implementation of AbstractAdminConnection.removeDurableConsumer
     public boolean removeDurableConsumer(String name) {
         boolean result = false;
         Connection connection = null;
 
         try {
             connection = DatabaseService.getConnection();
 
             DatabaseService.getAdapter().removeDurableConsumer(connection, name);
             connection.commit();
             result = true;
 
         } catch (PersistenceException exception) {
             try {
                 connection.rollback();
             } catch (Exception nested) {
                 // ignore
             }
         } catch (Exception exception) {
             // ignore for the moment
         } finally {
             if (connection != null) {
                 try {
                     connection.close();
                 } catch (Exception nested) {
                     // ignore
                 }
             }
         }
 
         return result;
     }
 
     // implementation of AbstractAdminConnection.unregisterConsumer
     public boolean unregisterConsumer(String name) {
         return false;
     }
 
     // implementation of AbstractAdminConnection.isConnected
     public boolean isConnected(String name) {
         return false;
     }
 
     // implementation of AbstractAdminConnection.getAllDestinations
     public Enumeration getAllDestinations() {
         Enumeration result = null;
         Connection connection = null;
 
         try {
             connection = DatabaseService.getConnection();
 
             result = DatabaseService.getAdapter().getAllDestinations(
                 connection);
             connection.commit();
         } catch (PersistenceException exception) {
             try {
                 connection.rollback();
             } catch (Exception nested) {
                 // ignore
             }
         } catch (Exception exception) {
             // ignore for the moment
         } finally {
             if (connection != null) {
                 try {
                     connection.close();
                 } catch (Exception nested) {
                     // ignore
                 }
             }
         }
 
         return result;
     }
 
     // implementation of AbstractAdminConnection.addDestination
     public boolean addDestination(String destination, boolean isQueue) {
         Connection connection = null;
         boolean success = false;
 
         try {
             connection = DatabaseService.getConnection();
 
             DatabaseService.getAdapter().addDestination(connection,
                 destination, isQueue);
             if (_context == null) {
                 // connect to the JNDI server and get a reference to
                 // root context
                 Hashtable props = new Hashtable();
                 props.put(Context.INITIAL_CONTEXT_FACTORY,
                     "org.exolab.jms.jndi.intravm.IntravmJndiServer");
                 _context = new InitialContext(props);
             }
 
             Object ob = (isQueue ? (Object) (new JmsQueue(destination)) :
                 (Object) (new JmsTopic(destination)));
 
             if (ob instanceof JmsQueue) {
                 ((JmsDestination) ob).setPersistent(true);
             }
 
             _context.rebind(destination, ob);
             connection.commit();
             success = true;
         } catch (PersistenceException exception) {
             System.err.println("Failed to add destination " + destination +
                 " b/c " + exception.toString());
             try {
                 connection.rollback();
             } catch (Exception nested) {
                 // ignore
             }
         } catch (javax.naming.NamingException err) {
             System.err.println("Failed to add " + destination +
                 " in JNDI context");
             try {
                 connection.rollback();
             } catch (Exception nested) {
                 // ignore
             }
         } catch (Exception exception) {
             // ignore for the moment
         } finally {
             if (connection != null) {
                 try {
                     connection.close();
                 } catch (Exception nested) {
                     // ignore
                 }
             }
         }
 
         return success;
     }
 
     // implementation of AbstractAdminConnection.getDurableConsumerMessageCount
     public int getDurableConsumerMessageCount(String topic, String name) {
         int count = -1;
         Connection connection = null;
 
         try {
             connection = DatabaseService.getConnection();
 
             count = DatabaseService.getAdapter().getDurableConsumerMessageCount(
                 connection, topic, name);
             connection.commit();
         } catch (PersistenceException exception) {
             System.err.println("Failed to get message count for " + topic +
                 " b/c " + exception.toString());
             try {
                 connection.rollback();
             } catch (Exception nested) {
                 // ignore
             }
         } catch (Exception exception) {
             // ignore for the moment
         } finally {
             if (connection != null) {
                 try {
                     connection.close();
                 } catch (Exception nested) {
                     // ignore
                 }
             }
         }
 
         return count;
     }
 
     // implementation of AbstractAdminConnection.getQueueMessageCount
     public int getQueueMessageCount(String queue) {
         int count = -1;
         Connection connection = null;
 
         try {
             connection = DatabaseService.getConnection();
 
             count = DatabaseService.getAdapter().getQueueMessageCount(
                 connection, queue);
             connection.commit();
         } catch (PersistenceException exception) {
             System.err.println("Failed to get message count for " + queue +
                 " b/c " + exception.toString());
             try {
                 connection.rollback();
             } catch (Exception nested) {
                 // ignore
             }
         } catch (Exception exception) {
             // ignore for the moment
         } finally {
             if (connection != null) {
                 try {
                     connection.close();
                 } catch (Exception nested) {
                     // ignore
                 }
             }
         }
 
         return count;
     }
 
     // implementation of AbstractAdminConnection.durableConsumerExists
     public boolean durableConsumerExists(String name) {
         boolean result = false;
         Connection connection = null;
 
         try {
             connection = DatabaseService.getConnection();
 
             result = DatabaseService.getAdapter().durableConsumerExists(
                 connection, name);
             connection.commit();
         } catch (PersistenceException exception) {
             System.err.println("Failed on consumer exists for " + name +
                 " b/c " + exception.toString());
             try {
                 connection.rollback();
             } catch (Exception nested) {
                 // ignore
             }
         } catch (Exception exception) {
             // ignore for the moment
         } finally {
             if (connection != null) {
                 try {
                     connection.close();
                 } catch (Exception nested) {
                     // ignore
                 }
             }
         }
 
         return result;
     }
 
     // implementation of AbstractAdminConnection.getDurableConsumers
     public Enumeration getDurableConsumers(String topic) {
         Enumeration result = null;
         Connection connection = null;
 
         try {
             connection = DatabaseService.getConnection();
 
             result = DatabaseService.getAdapter().getDurableConsumers(
                 connection, topic);
             connection.commit();
         } catch (PersistenceException exception) {
             System.err.println("Failed on getDurableConsumers for " + topic +
                 " b/c " + exception.toString());
             try {
                 connection.rollback();
             } catch (Exception nested) {
                 // ignore
             }
         } catch (Exception exception) {
             // ignore for the moment
         } finally {
             if (connection != null) {
                 try {
                     connection.close();
                 } catch (Exception nested) {
                     // ignore
                 }
             }
         }
 
         return result;
     }
 
     // implementation of AbstractAdminConnection.removeDestination
     public boolean removeDestination(String destination) {
         boolean result = false;
         Connection connection = null;
 
         try {
             connection = DatabaseService.getConnection();
 
             DatabaseService.getAdapter().removeDestination(connection,
                 destination);
             if (_context == null) {
                 // connect to the JNDI server and get a reference to
                 // root context
                 Hashtable props = new Hashtable();
                 props.put(Context.INITIAL_CONTEXT_FACTORY,
                     "org.exolab.jms.jndi.intravm.IntravmJndiServer");
                 _context = new InitialContext(props);
             }
             _context.unbind(destination);
             connection.commit();
             result = true;
         } catch (PersistenceException exception) {
             System.err.println("Failed on getDurableConsumers for " +
                 destination + " b/c " + exception.toString());
             try {
                 connection.rollback();
             } catch (Exception nested) {
                 // ignore
             }
         } catch (javax.naming.NamingException err) {
             System.err.println("Failed to removeDestination " + destination +
                 " b/c" + err.toString());
             try {
                 connection.rollback();
             } catch (Exception nested) {
                 // ignore
             }
         } catch (Exception exception) {
             // ignore for the moment
         } finally {
             if (connection != null) {
                 try {
                     connection.close();
                 } catch (Exception nested) {
                     // ignore
                 }
             }
         }
 
         return result;
     }
 
     // implementation of AbstractAdminConnection.purgeMessages
     public int purgeMessages() {
         return DatabaseService.getAdapter().purgeMessages();
     }
 
     // implementation of AbstractAdminConnection.stopServer
     public void stopServer() {
         JOptionPane.showMessageDialog
             (_parent, "Not available in offline mode",
                 "Shutdown Error", JOptionPane.ERROR_MESSAGE);
     }
 
     // implementation of AbstractAdminConnection.addUser
     public boolean addUser(String username, String password) {
         Connection connection = null;
         boolean success = false;
 
         try {
             connection = DatabaseService.getConnection();
 
             DatabaseService.getAdapter().addUser(connection,
                 new User(username, password));
             connection.commit();
             success = true;
         } catch (PersistenceException exception) {
             System.err.println("Failed to add user " + username +
                 exception.toString());
             try {
                 connection.rollback();
             } catch (Exception nested) {
                 // ignore
             }
         } catch (Exception exception) {
             // ignore for the moment
         } finally {
             if (connection != null) {
                 try {
                     connection.close();
                 } catch (Exception nested) {
                     // ignore
                 }
             }
         }
 
         return success;
     }
 
     // implementation of AbstractAdminConnection.changePassord
     public boolean changePassword(String username, String password) {
         Connection connection = null;
         boolean success = false;
 
         try {
             connection = DatabaseService.getConnection();
 
             DatabaseService.getAdapter().updateUser(connection,
                 new User(username, password));
             connection.commit();
             success = true;
         } catch (PersistenceException exception) {
             System.err.println("Failed to add user " + username +
                 exception.toString());
             try {
                 connection.rollback();
             } catch (Exception nested) {
                 // ignore
             }
         } catch (Exception exception) {
             // ignore for the moment
         } finally {
             if (connection != null) {
                 try {
                     connection.close();
                 } catch (Exception nested) {
                     // ignore
                 }
             }
         }
 
         return success;
     }
 
     // implementation of AbstractAdminConnection.removeUser
     public boolean removeUser(String username) {
         boolean result = false;
         Connection connection = null;
 
         try {
             connection = DatabaseService.getConnection();
 
             DatabaseService.getAdapter().removeUser(connection,
                 new User(username, null));
             connection.commit();
             result = true;
         } catch (PersistenceException exception) {
             System.err.println("Failed on remove user for " +
                 username + exception.toString());
             try {
                 connection.rollback();
             } catch (Exception nested) {
                 // ignore
             }
         } catch (Exception exception) {
             // ignore for the moment
         } finally {
             if (connection != null) {
                 try {
                     connection.close();
                 } catch (Exception nested) {
                     // ignore
                 }
             }
         }
 
         return result;
     }
 
     // implementation of AbstractAdminConnection.getAllUsers
     public Enumeration getAllUsers() {
         Enumeration result = null;
         Connection connection = null;
 
         try {
             connection = DatabaseService.getConnection();
 
             result = DatabaseService.getAdapter().getAllUsers(
                 connection);
             connection.commit();
         } catch (PersistenceException exception) {
             System.err.println("Failed on getAllUsers "
                 + exception.toString());
             try {
                 connection.rollback();
             } catch (Exception nested) {
                 // ignore
             }
         } catch (Exception exception) {
             // ignore for the moment
         } finally {
             if (connection != null) {
                 try {
                     connection.close();
                 } catch (Exception nested) {
                     // ignore
                 }
             }
         }
 
         return result;
     }
 } //-- OfflineConnection