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From "Dag H. Wanvik (JIRA)" <derby-...@db.apache.org>
Subject [jira] Commented: (DERBY-1356) Positioned update/delete when positioned after last or before first causes NullPointerException
Date Fri, 02 Jun 2006 23:50:30 GMT
    [ http://issues.apache.org/jira/browse/DERBY-1356?page=comments#action_12414540 ] 

Dag H. Wanvik commented on DERBY-1356:
--------------------------------------

This is a simple patch which adds handling of the two exceptional
cases indicated in the title of this issue.  I have verified that the
added test reveals the error before the fix code is added.

I recommend it for commit.

> Positioned update/delete when positioned after last or before first causes NullPointerException
> -----------------------------------------------------------------------------------------------
>
>          Key: DERBY-1356
>          URL: http://issues.apache.org/jira/browse/DERBY-1356
>      Project: Derby
>         Type: Bug

>   Components: JDBC
>     Versions: 10.2.0.0
>     Reporter: Fernanda Pizzorno
>     Assignee: Fernanda Pizzorno
>     Priority: Minor
>      Fix For: 10.2.0.0
>  Attachments: derby-1356.diff, derby-1356.stat
>
> ij version 10.2
> ij> connect 'jdbc:derby:SURTest;create=true';
> ij> autocommit off;
> ij> create table t1 (c1 int primary key, c2 int);
> 0 rows inserted/updated/deleted
> ij> insert into t1 values (1, 1), (2, 2), (3, 3), (4, 4), (5, 5), (6, 6), (7, 7),
(8, 8), (9, 9), (10, 10);
> 10 rows inserted/updated/deleted
> ij> get scroll insensitive cursor sc1 as 'SELECT * FROM t1 FOR UPDATE';
> ij> after last sc1;
> No current row
> ij> update t1 set c2 = c1 + 20 where current of sc1;
> ERROR XJ001: Java exception: ': java.lang.NullPointerException'.
> ij> before first sc1;
> No current row
> ij> update t1 set c2 = c1 + 20 where current of sc1;
> ERROR XJ001: Java exception: ': java.lang.NullPointerException'.
> ij> after last sc1;
> No current row
> ij> delete from t1 where current of sc1;
> ERROR XJ001: Java exception: ': java.lang.NullPointerException'.
> ij> before first sc1;
> No current row
> ij> delete from t1 where current of sc1;
> ERROR XJ001: Java exception: ': java.lang.NullPointerException'.
> ij> close sc1;

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