Re: t:dataTable, t:dataScroller and large datasets

[Catalin Kormos]

Looks to me like there a few things that need to be changed when sorting is involved also. For now I found the following, it works for me now, but its possible that i'm wrong, please correct me if I am:
 - the dataset size needs to be fetched independently from the actual data
 - the  t:dataTable should preserve the sorting and the dataModel.

The first one I needed, because I was asking for the row count before the table is rendered, and the second one its not realy clear to me why is needed, I mean why the "preserveDataModel" should be "true", it works only like this.

Any thoughts?

PS: i'm refering to this wiki page: http://wiki.apache.org/myfaces/WorkingWithLargeTables

Catalin Kormos <[EMAIL PROTECTED]> wrote:

Thanks Simon for yo ur reply.

It sounds trivial, but i can't get it to work. I can't seem to find the place where to store the sorted column's name and the sorting type, ascent/descent. Looks like every time the data is fetched out before the sorting options are established, or the first sorting change doesn't have any affect, like, I do click on a column, but the sorting doesn't take place, then i use the data scroller to move to another page to see that the sorting did happen.... I would greatly appreciate an advice.

Thanks,
Catalin

Simon Kitching <[EMAIL PROTECTED]> wrote:

Catalin Kormos wrote:
> Hi there,
>
> Did any of you guys successfuly managed to use this approach also with
> to allow sorting the pages data by columns?
& gt;
> It doesn't look triv ial to me...just let me know if it is realy. If not
> i would realy appreciate a wiki page covering this also.

It is trivial. Sorting with the "paging" approach suggested in the wiki
works just like sorting with a complete in-memory list.

As long as the method that is invoked to return the specified dataset
returns the requested data block in the requested order, it all "just
works".

Regards,

Simon

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