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freetds - Re: problem creating new connection with FreeTDS_JDBC

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Subject: FreeTDS Development Group

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  • From: Bob Kline <bkline AT rksystems.com>
  • To: TDS Development Group <freetds AT franklin.oit.unc.edu>
  • Subject: Re: problem creating new connection with FreeTDS_JDBC
  • Date: Tue, 11 Jul 2000 18:53:44 -0400 (EDT)


On Tue, 11 Jul 2000, Ian Struble wrote:

>
>
> > On Tue, 11 Jul 2000, Ian Struble wrote:
> >
> > > Class.forName("com.internetcds.jdbc.tds.Driver");
> > > con =
> > >
> DriverManager.getConnection("jdbc:freetds:sqlserver://sql.foo.com/Testing",
> > > "test_user", "test_password");
> > >
> > > And here is a little bit of the stack trace:
> > >
> > > Exception- java.lang.NullPointerException
> > > java.sql.SQLException
> > > at
> > >
> com.internetcds.jdbc.tds.Constructors.newConnection(Constructors.java:305)
> > > at com.internetcds.jdbc.tds.Driver.connect(Driver.java:257)
> > > at java.sql.DriverManager.getConnection(Unknown Source)
> >
> > That stack trace is from a re-thrown exception. Try sticking in an
> > e.printStackTrace() in the catch statements just below line 305 in
> > Constructors.java and see what you get.
>
> Thanks Bob. I threw it in and then also tried trowing it in a couple other
> places. The only new information was from putting it above line 305(a new
> exception is thrown on line 305 so below won't do much :^). This is what
> I've got now:
>
> java.lang.NullPointerException
> at
> com.internetcds.jdbc.tds.Constructors.newConnection(Constructors.java:296)
> at com.internetcds.jdbc.tds.Driver.connect(Driver.java:257)
> at java.sql.DriverManager.getConnection(Unknown Source)
> at java.sql.DriverManager.getConnection(Unknown Source)
> at BasicServlet.doGet(BasicServlet.java:49)
>
> And here is what line 296 is:
> public static java.sql.Connection newConnection
> // ... snip ...
> return (java.sql.Connection)connectionCtor.newInstance(params);
> // line 296 ^^^^^^^^^^^^

Hmm... The connectionCtor is null. Are you using the same version of
the JDK on your two systems?

--
Bob Kline
mailto:bkline AT rksystems.com
http://www.rksystems.com





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