Re: bug in the jdbc driver for postgress 7.0 (ResultSet.java) - Mailing list pgsql-bugs

From Bruce Momjian
Subject Re: bug in the jdbc driver for postgress 7.0 (ResultSet.java)
Date
Msg-id 200005250334.XAA29745@candle.pha.pa.us
Whole thread Raw
In response to bug in the jdbc driver for postgress 7.0 (ResultSet.java)  (Travis Bauer <trbauer@indiana.edu>)
List pgsql-bugs
This fix will appear in 7.01, and is in tonight's snapshot.  Please let
us know if that does not fix it.


> I think I've found a bug in how the jdbc driver (JDBC2) numbers the rows
> in a result set.  According to Sun's documentation for the ResultSet
> interface, the rows in a result set should be numbered starting with
> 1.  However, the ResultSet.java's first() routine set's current_row to
> 0. The odd thing is that beforeFirst() also sets current_row to 0, it
> just does not load this_row.  The bug manifests itself as such:
>
> given ResultSet rs containing two rows:
>
> rs.last();
> System.out.println("Last id is: "+rs.getRow());
> rs.first();
> System.out.println("First id is: "+rs.getRow());
>
> produces the output:
>
> Last id is: 1
> First id is: 0
>
> I think the easiest fix would be to change getRow() so that it returns
> current_row+1, and change beforeFirst so that it sets current_row to
> -1.  I'm not sure what other changes need to be made, but since the JDBC
> driver does not allow one to refer directly to row numbers, I can't think
> of any other changes offhand.
>
> Or am I all wet and this is not a bug?  Please respond to me directly, as
> I'm not a member of this list.
>
> ----------------------------------------------------------------
> Travis Bauer | CS Grad Student | IU |www.cs.indiana.edu/~trbauer
> ----------------------------------------------------------------
>
>


--
  Bruce Momjian                        |  http://www.op.net/~candle
  pgman@candle.pha.pa.us               |  (610) 853-3000
  +  If your life is a hard drive,     |  830 Blythe Avenue
  +  Christ can be your backup.        |  Drexel Hill, Pennsylvania 19026

pgsql-bugs by date:

Previous
From: Travis Bauer
Date:
Subject: bug in the jdbc driver for postgress 7.0 (ResultSet.java)
Next
From: Travis Bauer
Date:
Subject: jdbc2 bug in absolute (ResultSet.java)