Re: where are the query output tuples stored

On Mon, Mar 14, 2011 at 2:39 PM, Qiqi YU <vonclemay@gmail.com> wrote:
> Hi Dave,
>
> Thanks for your fast reply. As I went through the code of function
> ctlSQLResult::DisplayData(bool single), there seems to be no calling
> of wxGrid Control to display data?  My understanding is that the
> displayData function would set up the frame of the outputs (i.e. all
> the column attributes name and row number). But where is the output
> data being inserted into the output table?

It's not - you've got it backwards. The grid control calls
sqlResultTable::GetValue() whenever it wants to render a cell. That
function returns the text to display.

> Also the thing is I need to create to new tuples to the output panel
> (appended to the existing output table). Which part of the codes
> should I modify in order to achieve this?

You'd need to modify sqlResultTable::GetValue() to give it the ability
to return the additional data, and sqlResultTable::GetNumberRows() to
return the right number of rows. It will be somewhat difficult though
as the code is designed to be able to show partial resultsets - that
is it may start returning rows for the grid to display before the
entire recordset has been transferred from the server.

--
Dave Page
Blog: http://pgsnake.blogspot.com
Twitter: @pgsnake

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