>I thought this OGC filtering stuff was already implemented for WFS
server isn't it?
Yes, that's what I meant with data provider filtering vs. QGIS
filtering. WFS server uses QgsExpression (QGIS side filtering) while WMS
takes the filter and sets the subset to the provider (db side filtering).
So it could be done by switching to QgsExpression depending on the
filter format (pull requests welcome). Data provider syntax still needs
to be supported because this kind of filtering is more powerfull and
more performant.
Regards,
Marco
On 09.01.2014 17:41, Alessandro Pasotti wrote:
2014/1/9 Marco Hugentobler <[email protected]
<mailto:[email protected]>>
Hi Alessandro
>Since OGC FILTER parsing is already implemented in QGIS, would it
be possible make the WMS understand OGG FILTER encoding in
addition to the custom syntax?
The problem is that the filter has the subset syntax of the data
provider. So it would need translation OGC syntax -> provider
syntax (or the possibility to choose between db server side
filtering or QGIS side filtering with unified syntax).
I thought this OGC filtering stuff was already implemented for WFS
server isn't it?
--
Alessandro Pasotti
w3: www.itopen.it <http://www.itopen.it>
--
Dr. Marco Hugentobler
Sourcepole - Linux & Open Source Solutions
Weberstrasse 5, CH-8004 Zürich, Switzerland
[email protected] http://www.sourcepole.ch
Technical Advisor QGIS Project Steering Committee
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