[mapserver-users] problem with INTERSECTS query from OpenLayers to mapserver

[Fawcett, David (MNIT)]

Sally,

To make it easier for people to help you figure this out, I would suggest including the request string produced by OpenLayers and your mapfile text.

David.

From: mapserver-users-bounces at lists.osgeo.org [mailto:mapserver-users-bounces at lists.osgeo.org] On Behalf Of Sally Buechel
Sent: Friday, September 13, 2013 1:54 PM
To: mapserver-users at lists.osgeo.org
Subject: [mapserver-users] problem with INTERSECTS query from OpenLayers to mapserver

Am hoping someone can help or at least point me in the right direction regarding a problem I'm having trying to send a spatial filter produced in OpenLayers to mapserver.  What I'm trying to do is so basic, I'm sure that many have done this, yet I've been unsuccessful.  I thought this would be easy.  With much searching I have found similar questions, but nothing actually answering or showing a working example of this.

I'm using mapserver 6.2.1 and the current OpenLayers.js.  I can run the wfs.map file using shp2img and get a valid response from mapserver, I can run non-spatial filters using my OpenLayers WFS call to mapserver.  The POST request sent to mapserver with the spatial query looks fine, but I simply get  the not very helpful "premature end of script headers : mapserv" in response.  The spatial input is a hand-drawn polygon in OpenLayers and the intersection at the mapserver end is a postgis table containing a polygon field.  The table is large, but a spatial restriction should always yield a manageable number of records.  Without a spatial restriction in the filter, I've noticed that mapserver tried to load all the data, so have currently restricted it to 100 records for testing/debugging.  I'm assuming once I get the spatial filter that this will restrict the number of records retrieved on the server side.  I have some assumptions, but as I said I've not been able to find a working example of this online, maybe because its too simple and everyone but me has it working?

Should what I'm trying to do work or am I just beating my head against the wall?  It doesn't seem that this should be so hard...

Sally


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