Re: dataSource.getConnection jt400

    You need something to manage the pooled connections.  That's what
AS400JDBCConnectionPool does.  My suggestion, and I realize it seems
somewhat circular, but that's the way they set it up, is to create a
DataSource wrapper around the AS400JDBCConnectionPool.  So your
app code would get your DataSource and still just call

Connection connection = dataSource.getConnection();

    So there's another layer.  In *your* DataSource, you would implement
getConnection() something like this ( with better recovery ):

public java.sql.Connection getConnection()
{
   try
   {
      return myAS400JDBCConnectionPool.getConnection();
   }
   catch( ConnectionPoolException cpe )
   { // do something  }
}  // end getConnection

    The circularity is that AS400JDBCConnectionPool wants a
ConnectionPoolDataSource, which gets PooledConnections, which the pool
manager manages.  Hip bone connected to the thigh bone.


                                                         Joe Sam

Joe Sam Shirah -        http://www.conceptgo.com
conceptGO         -        Consulting/Development/Outsourcing
Java Filter Forum:       http://www.ibm.com/developerworks/java/
Just the JDBC FAQs: http://www.jguru.com/faq/JDBC
Going International?    http://www.jguru.com/faq/I18N
Que Java400?             http://www.jguru.com/faq/Java400


----- Original Message -----
From: "Patrick L Archibald" <Patrick.Archibald@xxxxxxxxxxxxx>
To: "Java Programming on and around the iSeries / AS400"
<java400-l@xxxxxxxxxxxx>
Sent: Tuesday, July 29, 2003 5:56 PM
Subject: Re: dataSource.getConnection jt400


> Hey Joe Sam
>
> There lies the problem. I don't want to get the connection from an
> AS400JDBCConnectionPool. I want to get the connection from the
> DataSource so I can use the dataSource.getConnection() method in all of
> my beans  whether it is on the 400 or the PC.  From what it looks like I
> can't do it.  At least not with a pooled connection on the PC side.  Do
> you concur?
>
> Thanx again, PLA
>
>
> Joe Sam Shirah wrote:
>
> >>The getConnection() method on
> >>the AS400JDBCConnectionPoolDataSource
> >>still does not return a pooled connection.
> >>
> >>
> >
> >    Correct.  I probably wasn't very clear.  Use getConnection() from
> >*AS400JDBCConnectionPool*.  So, you need to implement a DataSource
> >that creates an AS400JDBCConnectionPool and gets everything from it.
> >Take a look at the documentation for AS400JDBCConnectionPool.  Hope that
> >clears things up somewhat.
> >
> >
> >                                                         Joe Sam
> >
> >Joe Sam Shirah -        http://www.conceptgo.com
> >conceptGO         -        Consulting/Development/Outsourcing
> >Java Filter Forum:       http://www.ibm.com/developerworks/java/
> >Just the JDBC FAQs: http://www.jguru.com/faq/JDBC
> >Going International?    http://www.jguru.com/faq/I18N
> >Que Java400?             http://www.jguru.com/faq/Java400
> >
> >
> >
> >----- Original Message -----
> >From: "Patrick L Archibald" <Patrick.Archibald@xxxxxxxxxxxxx>
> >To: "Java Programming on and around the iSeries / AS400"
> ><java400-l@xxxxxxxxxxxx>
> >Sent: Tuesday, July 29, 2003 5:09 PM
> >Subject: Re: dataSource.getConnection jt400
> >
> >
> >
> >
> >>Hey Joe Sam
> >>
> >>I downloaded jtopen.jar 4.0.  The getConnection() method on the
> >>AS400JDBCConnectionPoolDataSource still does not return a pooled
> >>connection.
> >>
> >>I wonder if I could extend AS400JDBCConnectionPoolDataSource and get it
> >>to work?
> >>
> >>Thanx, PLA
> >>
> >>
> >>Joe Sam Shirah wrote:
> >>
> >>
> >>
> >>>   Take a look at AS400JDBCConnectionPool in JTOpen 4.x and try
> >>>using that.  Your getConnection() problem stems from the fact that
> >>>AS400JDBCConnectionPoolDataSource descends from
> >>>AS400JDBCDataSource and does not override the getConnection()
> >>>methods there.
> >>>
> >>>   The source has been changed considerably in
> >>>AS400JDBCConnectionPoolDataSource and
> >>>AS400JDBCPooledConnection.  You probably have an earlier version
> >>>on the AS/400; That's the only reason I can think of why it worked
there.
> >>>
> >>>   Let us know how it goes.
> >>>
> >>>
> >>>                                                        Joe Sam
> >>>
> >>>Joe Sam Shirah -        http://www.conceptgo.com
> >>>conceptGO         -        Consulting/Development/Outsourcing
> >>>Java Filter Forum:       http://www.ibm.com/developerworks/java/
> >>>Just the JDBC FAQs: http://www.jguru.com/faq/JDBC
> >>>Going International?    http://www.jguru.com/faq/I18N
> >>>Que Java400?             http://www.jguru.com/faq/Java400
> >>>
> >>>
> >>>----- Original Message -----
> >>>From: "Patrick L Archibald" <Patrick.Archibald@xxxxxxxxxxxxx>
> >>>To: "Java Programming on and around the iSeries / AS400"
> >>><java400-l@xxxxxxxxxxxx>
> >>>Sent: Tuesday, July 29, 2003 1:07 PM
> >>>Subject: Re: dataSource.getConnection jt400
> >>>
> >>>
> >>>
> >>>
> >>>
> >>>
> >>>>Hey Joe Sam
> >>>>
> >>>>You're right on target. I have a class I call ObjectServer that looks
up
> >>>>the OS on creation, creates the DataSource accordingly and returns it
> >>>>via ObjectServer.getDataSource().   The only problem I'm having is the
> >>>>the AS400JDBCConnectionPoolDataSource.getConnection() doesn't appear
to
> >>>>return a pooled connnection. I have to do the following to get a
pooled
> >>>>connection from the AS400JDBCConnectionPoolDataSource.
> >>>>
> >>>>AS400JDBCConnectionPoolDataSource dataSource = new
> >>>>AS400JDBCConnectionPoolDataSource("myserver.com");
> >>>>dataSource.setUser("myUser");
> >>>>dataSource.setPassword("myPassword");
> >>>>AS400JDBCPooledConnection pooledConnection =
(AS400JDBCPooledConnection)
> >>>>dataSource.getPooledConnection();
> >>>>Connection connection = pooledConnection.getConnection();
> >>>>
> >>>>Am I missing something?
> >>>>
> >>>>Thanks for the help!
> >>>>
> >>>>PLA
> >>>>
> >>>>
> >>>>