ArcSDE and SLD WMS (attribute queries)

[Bart van den Eijnden (OSGIS)]

Hi John,

thanks for the info. I did get attribute queries to work, but what I can't
get to work is a combination of a spatial filter and an attribute filter
(combined with an ogc:And).

Did anyone ever try that successfully?

Best regards,
Bart

Bart,

The Government of BC has an application which uses non-spatial filters
in SLD documents to Mapserver, with an SDE back-end:
http://openmaps.gov.bc.ca/imfows13/imf.jsp?site=idt
Find Imagery --> Air Photos --> Search For Air Photos
Zoom in to the resultant features, activate the "Centres" tool, and draw
a box around a number of Air Photo centre points.  This will show three
separate SDE layers styled using an SLD with a filter (non-spatial), two
of which have alternate symbolization and thus a more complex filter
clause in the SLD.

Incidentally, the other imagery types (Orthophotos, Satellite Imagery,
etc) are primarily backed by shapefiles, so are not relevant to this
discussion.

I did run into timeout problems getting the SLD to work when there were
> > 200 or so individual features that needed to be identified with the
filter.  I had been using a single PropertyIsEqualTo clause for each
feature which I was able to change to a handful of PropertyIsBetween
clauses due to the convenient sequential numbering of the ID values
which I was filtering.  This change allows the SLD filter to work quite
well.

Regards,

John Fletcher
Latitude Geographics Group Ltd.
jfletcher at latitudegeo.com www.latitudegeo.com
Head Office: 204 Market Square Victoria, BC Canada V8W 3C6
Tel: (250) 381-8130 Fax: (250) 381-8132 

Geocortex Internet Mapping (www.geocortex.net) - Helping people succeed
with web-based geography

--
Bart van den Eijnden
OSGIS, Open Source GIS
http://www.osgis.nl