Skip site navigation (1) Skip section navigation (2)

Re: bug in the jdbc driver for postgress 7.0 (ResultSet.java)

From: Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us>
To: Travis Bauer <trbauer(at)indiana(dot)edu>
Cc: pgsql-bugs(at)postgresql(dot)org
Subject: Re: bug in the jdbc driver for postgress 7.0 (ResultSet.java)
Date: 2000-05-25 03:34:04
Message-ID: 200005250334.XAA29745@candle.pha.pa.us (view raw or flat)
Thread:
Lists: 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(at)candle(dot)pha(dot)pa(dot)us               |  (610) 853-3000
  +  If your life is a hard drive,     |  830 Blythe Avenue
  +  Christ can be your backup.        |  Drexel Hill, Pennsylvania 19026

In response to

pgsql-bugs by date

Next:From: Travis BauerDate: 2000-05-25 16:51:10
Subject: jdbc2 bug in absolute (ResultSet.java)
Previous:From: Travis BauerDate: 2000-05-25 02:50:20
Subject: bug in the jdbc driver for postgress 7.0 (ResultSet.java)

Privacy Policy | About PostgreSQL
Copyright © 1996-2014 The PostgreSQL Global Development Group