org.jpos.tpl
Class ConnectionPool

java.lang.Object
  org.jpos.tpl.ConnectionPool

All Implemented Interfaces:

java.lang.Runnable, Configurable, LogSource

public class ConnectionPool
extends java.lang.Object
implements java.lang.Runnable, LogSource, Configurable

A class for preallocating, recycling, and managing JDBC connections.

Taken from Core Servlets and JavaServer Pages from Prentice Hall and Sun Microsystems Press, http://www.coreservlets.com/. © 2000 Marty Hall; may be freely used or adapted.

Version:

$Revision: 2594 $ $Date: 2008-01-22 08:41:31 -0800 (Tue, 22 Jan 2008) $

Author:

Rajal Shah

Constructor Summary

ConnectionPool()
no args constructor

ConnectionPool(java.lang.String driver, java.lang.String url, java.lang.String username, java.lang.String password, int initialConnections, int maxConnections, boolean waitIfBusy)
To invoke the Connection Pool object directly without jPOS.

Method Summary

void	closeAllConnections() Close all the connections.
void	free(java.sql.Connection connection)
java.sql.Connection	getConnection()
static ConnectionPool	getConnectionPool(java.lang.String name)
Logger	getLogger()
java.lang.String	getRealm()
int	getTotalConnections()
void	run()
void	setConfiguration(Configuration cfg)
void	setLogger(Logger logger, java.lang.String realm)
java.lang.String	toString()
int	totalConnections()

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

ConnectionPool

public ConnectionPool()

no args constructor

ConnectionPool

public ConnectionPool(java.lang.String driver,
                      java.lang.String url,
                      java.lang.String username,
                      java.lang.String password,
                      int initialConnections,
                      int maxConnections,
                      boolean waitIfBusy)
               throws java.sql.SQLException

To invoke the Connection Pool object directly without jPOS.

Throws:

java.sql.SQLException

Method Detail

setConfiguration

public void setConfiguration(Configuration cfg)
                      throws ConfigurationException

Specified by:

setConfiguration in interface Configurable

Parameters:

cfg - Configuration object

Throws:

ConfigurationException

getConnection

public java.sql.Connection getConnection()
                                  throws java.sql.SQLException

Throws:

java.sql.SQLException

run

public void run()

Specified by:

run in interface java.lang.Runnable

free

public void free(java.sql.Connection connection)

totalConnections

public int totalConnections()

getTotalConnections

public int getTotalConnections()

closeAllConnections

public void closeAllConnections()

Close all the connections. Use with caution: be sure no connections are in use before calling. Note that you are not required to call this when done with a ConnectionPool, since connections are guaranteed to be closed when garbage collected. But this method gives more control regarding when the connections are closed.

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

setLogger

public void setLogger(Logger logger,
                      java.lang.String realm)

Specified by:

setLogger in interface LogSource

getRealm

public java.lang.String getRealm()

Specified by:

getRealm in interface LogSource

getLogger

public Logger getLogger()

Specified by:

getLogger in interface LogSource

getConnectionPool

public static ConnectionPool getConnectionPool(java.lang.String name)
                                        throws NameRegistrar.NotFoundException

Returns:

ISOMUX instance with given name.

Throws:

NameRegistrar.NotFoundException;

NameRegistrar.NotFoundException

See Also:

NameRegistrar