It's a limitation in older versions of MapServer where specific backend optimizations were scattered about the WMS/WFS code. Most of those optimizations address the most common use cases - I guess this wasn't one of them. It's surprising that at worst the extent of the supplied geometry isn't passed (I see a comment in the WFS code about this). The specific filter intersection test is applied on the MapServer side - the results are correct, performance can suffer though.
This is being addresses in MapServer 7.0 where more complete filter translation functions are being supported (RFC 91). Steve From: mapserver-users-boun...@lists.osgeo.org [mailto:mapserver-users-boun...@lists.osgeo.org] On Behalf Of steve.tout...@inspq.qc.ca Sent: Monday, January 26, 2015 8:55 AM To: mapserver-users@lists.osgeo.org Subject: [mapserver-users] Mapserver doesn't send good filter to postgis Sorry my first post was with an inapprpriate title...... I'm using mapserver 6.4.1 and postgis 2.1 using OpenLayers 2.13.1 I draw a small polygon that I use for a within spatial filter of a WFS getfeature request. The problem is that mapserver is not sending this polygon to postgis, it is sending the extent of the mapfile as filter... The wfs POST Request (created and send by OpenLayers client) <ogc:Filter xmlns:ogc="http://www.opengis.net/ogc";><ogc:Within><ogc:PropertyName>msGeometry</ogc:PropertyName><gml:Polygon xmlns:gml="http://www.opengis.net/gml"; srsName="urn:ogc:def:crs:EPSG::3857"><gml:exterior><gml:LinearRing><gml:posList>-8081644.2511244 5835062.56996 -8081707.5505384 5834980.1612889 -8081638.2794815 5834913.2788892 -8081533.1785677 5834988.5215889 -8081644.2511244 5835062.56996</gml:posList></gml:LinearRing></gml:exterior></gml:Polygon></ogc:Within></ogc:Filter> In Mapserver log, I see FLTLayerApplyPlainFilterToLayer(): ([shape] within fromText('POLYGON ((-8081644.2511243997141719 5835062.5699599999934435, -8081707.5505384001880884 5834980.1612889003008604, -8081638.2794815003871918 5834913.2788891997188330, -8081533.1785677000880241 5834988.5215889001265168, -8081644.2511243997141719 5835062.5699599999934435))')) Then a few lines later, I see that it is not sending the polygon received as filter select ....... where geom_p && ST_GeomFromText('POLYGON((-9239517 5465442,-9239517 9349764,-5565974 9349764,-5565974 5465442,-9239517 5465442))',3857); See the polygon definition is different, postgis receive the extent defined in the mapfile EXTENT -9239517 5465442 -5565974 9349764 And, in postgis log I see this query, See the select ....... where geom_p && ST_GeomFromText('POLYGON((-9239517 5465442,-9239517 9349764,-5565974 9349764,-5565974 5465442,-9239517 5465442))',3857); Why Mapserver is not sending the polygon received as filter to postgis? Thanks! Steve Toutant, M. Sc. Analyste en géomatique Secteur environnement Direction de la santé environnementale et de la toxicologie Institut national de santé publique du Québec Tél.: 418 646-6777 poste 30015 Téléc.: 418 644-4593 steve.tout...@inspq.qc.ca<mailto:steve.tout...@inspq.qc.ca> http://www.inspq.qc.ca<http://www.inspq.qc.ca/> http://www.monclimatmasante.qc.ca<http://www.monclimatmasante.qc.ca/> Pour me rejoindre par courrier Service de l'infrastructure et du réseau Direction des technologies de l'information Ministère de la Sécurité Publique 2525 boul. Laurier, 2e étage Tour Laurentides Québec, G1V 2L2
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