[Qgis-developer] Reverse Changeset 13499

[Jürgen E. Fischer]

Hi,

On Wed, 19. May 2010 at 12:17:15 +1200, Chris Crook wrote:
> Yes .. It is wrong!  But the point of the estimated metadata isn't to get it
> right.  The point is that with very large tables, getting it right takes much
> too long - taking minutes to open layers (even if its only the first time
> with a lazy implementation) is very painful!

But only if you set a where clause.  In which case the feature count is likely
to be much different from the full feature count.

Or do you have tables with mixed geometry types, that are always accessed with
a where clause to get a unique geometry type?

I now also changed filling the metadata page in vector properties only if the
user wants to see it.

Another place where the feature count is used is to show progress in
symbology-ng, although that doesn't seem to make much sense, unless you are at
full layer extent.

 
Jürgen

-- 
Jürgen E. Fischer         norBIT GmbH               Tel. +49-4931-918175-20
Dipl.-Inf. (FH)           Rheinstraße 13            Fax. +49-4931-918175-50
Software Engineer         D-26506 Norden               http://www.norbit.de

-- 
norBIT Gesellschaft fuer Unternehmensberatung und Informationssysteme mbH
Rheinstrasse 13, 26506 Norden
GF: Jelto Buurman, HR: Amtsgericht Emden, HRB 5502