[OpenLayers-Users] Possible bug with Protocol.WFS

[Tim Schaub]

Tim Schaub wrote:
> Andreas Hocevar wrote:
>> Hi,
>>
>> Brian Stempin wrote:
>>> I've been working with a few people on #openlayers to help me out with 
>>> a WFS issue.  I'm posting this to the list because I may have found a 
>>> bug in the process.
>>>
>>>
>>>                     protocol:new OpenLayers.Protocol.WFS({
>>>                         version: "1.1.0",
>>>                         //url: "test.xml",
>>>                         // modified by bstempi
>>>                         url: "/geoserver/wms",
>>>                         featureType: "v_stats_20090101_000000",
>>>                         featureNS: "http://192.168.0.20/geoserver/wms",
>>>                         geometryName: "the_geom"
>>>                     })
>>>                 });
>>>
>>>
>>> I found that the above code will work if you add srsName: 
>>> "EPSG:900913" to the WFS options.
>>>
>>> Is this a feature/bug/magic, or me being silly?
>> You mean it works if you add that to the protocol options, right? That's 
>> the way it is done. The BBOX strategy will use map coordinates 
>> (EPSG:900913), and the protocol would think they are in the default SRS 
>> for the feature type if you don't tell it what the SRS is.
>>
> 
> Right.  Sorry I stopped short of making it work for your WFS (as an 
> aside, though GeoServer is lenient with your /geoserver/wms url above, 
> it might be less misleading to use /geoserver/ows or /geoserver/wfs - no 
> real difference if you are sending the SERVICE parameter, but it is less 
> confusing to the reader).
> 
> One way you could have determined what was wrong was to examine the 
> outgoing GetFeature request.  In Firebug, you should see the POST 
> request being issued.  Looking at the body of the request, I imagine 
> you'll see an element representing the bounding box with an srsName 
> attribute of "EPSG:4326".  It is a shortcoming of the protocol that it 
> doesn't try to guess the srsName from the layer projection.  I'll ticket 
> this.

Scratch that.  The protocol doesn't know about the layer.  Hmmmm.

> 
> In the meantime, you should set srsName explicitly in the protocol 
> options if it differs from "EPSG:4326".  The reason it is settable 
> (instead of always derived from the layer projection) is that some 
> servers may require an srsName that cannot be derived from the layer 
> projection (as things currently stand).
> 
> Thanks for the patience.
> 
> Tim
> 
>> Regards,
>> Andreas.
>>
> 
> 


-- 
Tim Schaub
OpenGeo - http://opengeo.org
Expert service straight from the developers.