db-derby-dev mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From Myrna van Lunteren <m.v.lunte...@gmail.com>
Subject Re: [jira] Commented: (DERBY-276) ResultSet.relative(int row) cannot be called when the cursor is not positioned on a row.
Date Mon, 13 Jun 2005 18:26:52 GMT
The patch applied when I svn updated to the revision in the patch...
And the 2 tests pass...
 But I was wondering - should there be a test case for the NPE situation in 
one of the scrollCursors tests?
 Myrna

 On 6/13/05, Bernt M. Johnsen (JIRA) <derby-dev@db.apache.org> wrote: 
> 
> [ 
> http://issues.apache.org/jira/browse/DERBY-276?page=comments#action_12313430]
> 
> Bernt M. Johnsen commented on DERBY-276:
> ----------------------------------------
> 
> The mailed patch has a minor issue. It gives NPE when relative(0) is 
> acalled on an emtpy resultset.
> 
> > ResultSet.relative(int row) cannot be called when the cursor is not 
> positioned on a row.
> > 
> ----------------------------------------------------------------------------------------
> >
> > Key: DERBY-276
> > URL: http://issues.apache.org/jira/browse/DERBY-276
> > Project: Derby
> > Type: Improvement
> > Components: JDBC
> > Reporter: Bernt M. Johnsen
> > Assignee: Bernt M. Johnsen
> > Priority: Minor
> 
> >
> > If the cursor is not positioned on a row, calling ResultSet.relative() 
> causes the following exception:
> > Exception in thread "main" ERROR X0X87: ResultSet.relative(int row) 
> cannot be called when the cursor is not positioned on a row.
> > at org.apache.derby.iapi.error.StandardException.newException(
> StandardException.java:301)
> > at 
> org.apache.derby.impl.sql.execute.ScrollInsensitiveResultSet.getRelativeRow
> (ScrollInsensitiveResultSet.java:336)
> > at org.apache.derby.impl.jdbc.EmbedResultSet.movePosition(
> EmbedResultSet.java:366)
> > at org.apache.derby.impl.jdbc.EmbedResultSet.relative(
> EmbedResultSet.java:1840)
> > However, The 1.4.2 Javadoc says:
> > Note: Calling the method relative(1) is identical to calling the method 
> next() and calling the method relative(-1) is identical to calling the 
> method previous(). (This is confirmed by the JDBC 3.0 spec, ch. 14.2.2)
> > Since next() is valid, so should rs.relative(1) (and all other 
> arguments, since a too large value will position the
> > cursor after the last row, and a too low value will position it before 
> the first).
> 
> --
> This message is automatically generated by JIRA.
> -
> If you think it was sent incorrectly contact one of the administrators:
> http://issues.apache.org/jira/secure/Administrators.jspa
> -
> For more information on JIRA, see:
> http://www.atlassian.com/software/jira
> 
>

Mime
View raw message