Subject Re: [IBO] Refresh / Buffer HowTo ?
Author Frank
Thanks for your prompt reply.

Do you have any code snippet of the
InvalidateRowNum method ?

The Helpfile is not really helpful and I dont know
where to get the aRowNum parameter or how to use it... :-(

--- In, Helen Borrie <helebor@t...> wrote:
> At 02:01 PM 20/07/2005 +0000, you wrote:
> >I have a TIB_Query where I edit and append records.
> >Additionaly there is a TIBO_Query with the same SQL set
> >to provide a QuickReport form with data.
> >
> >After finish append/editing the user click on a button causing
> >to add a filter to TIBO_Query and show a new form where the user
> >see the QuickReport Preview.
> >
> >Unfortunately I can't see any updates in the QR-Preview -
> >they occur only after restart of the app.
> >
> >Seems that the TIBO_Query does not update/reread it's buffers
> >after changing the filters - or the TIB_Query does not write
> >the changes in time before I set the filter ...
> >
> >So I guess I still have a problem about how to refresh/reread
> >data.
> >
> >Could please be somebody so kind to give me some general
> >guideline of this kind of problem ?
> >
> >I tried around experementing with Post/Commit/Refresh/FetchAll etc.
> >but except of the FetchAll and ExecSQL command I did not find
> >out how to re-read data to the buffer without a significant
> >performance loss ...
> Try using InvalidateRowNum. To do this, you will need to establish
a way
> to correlate the row numbers between the two datasets so that, when
the row
> in the first query changes, you can map to the corresponding row
number in
> the IBOQuery.
> The ideal is to use the native IBO InvalidateBookmark.
Unfortunately, the
> ib_query and iboquery bookmark types are not compatible. Jason has
> an InvalidateBookmark method to the TIBOQuery, so my instinct tells
> there ought to be a way to map a TIB_Bookmark in the ib_query to a
> TBookmark in the iboquery. Current problem is, I don't know what it
is. :-(
> Helen