org.openswing.swing.server
Class ConnectionManager

java.lang.Object
  extended byorg.openswing.swing.server.ConnectionManager

public class ConnectionManager
extends java.lang.Object

Title: OpenSwing Framework

Description: Database Connection Factory: it creates a ConnectionSource object as manager of database connections.

This is a sngleton class: developers can directly refer this class to access to the database from the rest of the application (server side).

Copyright: Copyright (C) 2006 Mauro Carniel

This file is part of OpenSwing Framework. This library is free software; you can redistribute it and/or modify it under the terms of the (LGPL) Lesser General Public License as published by the Free Software Foundation; GNU LESSER GENERAL PUBLIC LICENSE Version 2.1, February 1999 This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library General Public License for more details. You should have received a copy of the GNU Library General Public License along with this library; if not, write to the Free Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. The author may be contacted at: maurocarniel@tin.it


Constructor Summary
ConnectionManager()
           
 
Method Summary
static java.sql.Connection getConnection(javax.servlet.ServletContext context)
           
static void initConnectionSource(javax.servlet.http.HttpServlet servlet, java.lang.String connectionSourceClassName)
          Method called by the server controller (class Controller).
static boolean isConnectionSourceCreated()
           
static void releaseConnection(java.sql.Connection conn, javax.servlet.ServletContext context)
          Release a database connection
 
Methods inherited from class java.lang.Object
equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Constructor Detail

ConnectionManager

public ConnectionManager()
Method Detail

isConnectionSourceCreated

public static boolean isConnectionSourceCreated()
Returns:
true if the connection source has been correcly created, false otherwise

getConnection

public static java.sql.Connection getConnection(javax.servlet.ServletContext context)
                                         throws java.lang.Exception
Parameters:
context - servlet context; used to retrieve database connection settings
Returns:
new database connection
Throws:
java.lang.Exception

releaseConnection

public static void releaseConnection(java.sql.Connection conn,
                                     javax.servlet.ServletContext context)
Release a database connection

Parameters:
conn - database connection to release
context - servlet context; used to retrieve database connection settings

initConnectionSource

public static void initConnectionSource(javax.servlet.http.HttpServlet servlet,
                                        java.lang.String connectionSourceClassName)
Method called by the server controller (class Controller).

Parameters:
connectionSourceClassName - database connection manager class name