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Thread: Exception on call to isValid() method

Exception on call to isValid() method

From
Jeff Lanzarotta
Date:
Hello,

I am receiving the following exception when I call the isValid() method on a database Connection object.


Exception in thread "AWT-EventQueue-0" java.lang.AbstractMethodError: org.postgresql.jdbc3.Jdbc3Connection.isValid(I)Z


Any idea why this Exception would be thrown?

FYI: Before calling isValid() I do make sure that the the Connection object is not null.

Regards,

Jeff

Re: Exception on call to isValid() method

From
Kris Jurka
Date:

On Mon, 5 Mar 2007, Jeff Lanzarotta wrote:

> I am receiving the following exception when I call the isValid() method
> on a database Connection object.
>
> Exception in thread "AWT-EventQueue-0" java.lang.AbstractMethodError:
> org.postgresql.jdbc3.Jdbc3Connection.isValid(I)Z
>
> Any idea why this Exception would be thrown?

isValid is a JDBC4 method and you have a JDBC3 driver.

Kris Jurka

Re: Exception on call to isValid() method

From
Jeff Lanzarotta
Date:
OK, thanks. I will look for a JDBC4 driver...

----- Original Message ----
From: Kris Jurka <books@ejurka.com>
To: Jeff Lanzarotta <delux256-postgresql@yahoo.com>
Cc: PostgreSQL JDBC List <pgsql-jdbc@postgresql.org>
Sent: Monday, March 5, 2007 12:21:21 PM
Subject: Re: [JDBC] Exception on call to isValid() method



On Mon, 5 Mar 2007, Jeff Lanzarotta wrote:

> I am receiving the following exception when I call the isValid() method
> on a database Connection object.
>
> Exception in thread "AWT-EventQueue-0" java.lang.AbstractMethodError:
> org.postgresql.jdbc3.Jdbc3Connection.isValid(I)Z
>
> Any idea why this Exception would be thrown?

isValid is a JDBC4 method and you have a JDBC3 driver.

Kris Jurka

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Re: Exception on call to isValid() method

From
Jeff Lanzarotta
Date:
OK, found the JDBC4 driver. Now I get,

org.postgresql.util.PSQLException: Method org.postgresql.jdbc4.Jdbc4Connection.isValid(int) is not yet implemented.
    at org.postgresql.Driver.notImplemented(Driver.java:728)
    at org.postgresql.jdbc4.AbstractJdbc4Connection.isValid(AbstractJdbc4Connection.java:53)
    at org.postgresql.jdbc4.Jdbc4Connection.isValid(Jdbc4Connection.java:21)

isValid() is an abstract method. So, am I to assume that the driver itself does not have isValid() implemented?


----- Original Message ----
From: Jeff Lanzarotta <delux256-postgresql@yahoo.com>
To: PostgreSQL JDBC List <pgsql-jdbc@postgresql.org>
Sent: Monday, March 5, 2007 12:54:29 PM
Subject: Re: [JDBC] Exception on call to isValid() method

OK, thanks. I will look for a JDBC4 driver...

----- Original Message ----
From: Kris Jurka <books@ejurka.com>
To: Jeff Lanzarotta <delux256-postgresql@yahoo.com>
Cc: PostgreSQL JDBC List <pgsql-jdbc@postgresql.org>
Sent: Monday, March 5, 2007 12:21:21 PM
Subject: Re: [JDBC] Exception on call to isValid() method



On Mon, 5 Mar 2007, Jeff Lanzarotta wrote:

> I am receiving the following exception when I call the isValid() method
> on a database Connection object.
>
> Exception in thread "AWT-EventQueue-0" java.lang.AbstractMethodError:
> org.postgresql.jdbc3.Jdbc3Connection.isValid(I)Z
>
> Any idea why this Exception would be thrown?

isValid is a JDBC4 method and you have a JDBC3 driver.

Kris Jurka

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