Cascading WFS 1.1.0 with Filter WAS: [mapserver-users] Mapserver WMS client and WMS 1.3.0

[Rahkonen Jukka]

Hi,

Next thing to know is what Mapserver is sending for the remote server. I believe that it is at least adding a BBOX filter to each request.
Do you run also the remore server? Then you can probably find the requests from the log file.

-Jukka Rahkonen-

> -----Alkuperäinen viesti-----
> Lähettäjä: Michal Šrédl [mailto:michal.sredl at gmail.com] 
> Lähetetty: 17. marraskuuta 2011 14:35
> Vastaanottaja: Rahkonen Jukka
> Aihe: Re: [mapserver-users] Mapserver WMS client and WMS 1.3.0
> 
> Hi Jukka,
> 
> thanks. Before I do more experiments, just a note: it does work in the
> browser, as url:
> 
> http://localhost//cgi-bin/ows?REQUEST=GetFeature&VERSION=1.1.0
> &SERVICE=WFS&TYPENAME=typ&FILTER=<ogc:Filter
> xmlns:ogc="http://www.opengis.net/ogc"><ogc:PropertyIsEqualTo>
> <ogc:PropertyName>SLT</ogc:PropertyName><ogc:Literal>1A</ogc:L
iteral></ogc:PropertyIsEqualTo></ogc:Filter>
> 
> It does not work in mapfile, neither as
> 
> "wfs_version" "1.1.0"
> "wfs_filter" '<ogc:Filter
> xmlns:ogc="http://www.opengis.net/ogc"><ogc:PropertyIsEqualTo>
> <ogc:PropertyName>SLT</ogc:PropertyName><ogc:Literal>1A</ogc:L
iteral></ogc:PropertyIsEqualTo></ogc:Filter>'
> 
> nor without the <Filter> tag or namespaces.
> 
> Michal
> 
> 
> 2011/11/17 Rahkonen Jukka <Jukka.Rahkonen at mmmtike.fi>:
> > Hi,
> >
> > You I do remember but someone really had a WMS 1.3.0 question.
> >
> > I have had no time for testing cascading WFS 1.1.0 yet. I 
> should make Mapserver to send WFS requests through a logging 
> proxy first for getting some reasonable results. From 
> previous experience I am a bit sceptical but I cannot say 
> much before having a try. Typical things which can go wrong are
> > - All WFS servers do not necassarily support correctly 
> filters which are sent url-encoded inside http GET requests 
> even they can support them with http POST. I do not know 
> which method Mapserver is using.
> > - Some WFS servers would rather see PropertyNames given 
> with namespaces
> > - With WFS 1.1.0 geometries used in spatial filters should 
> follow the official axis order of the corresponding srsName.
> > - It would be best to give always all the gml geometries 
> explicitly the srsName.  Otherwise nobody can really 
> guarantee what srsName the WFS 1.1.0 server is using as 
> default. As far as I remember Mapserver builds filters 
> without srsName.
> >
> > There are better possibilities for success with cascading 
> WFS 1.0.0 servers but I won't say that it is impossible with 
> WFS 1.1.0.  What is essential is to make as simple trial as 
> possible and capture the requests Mapserver is sending.  If 
> you play a week or two with different filters and different 
> WFS servers the result to expect is a bunch of bug reports.
> >
> > -Jukka Rahkonen-
> >
> > Michal Šrédl wrote:
> >
> >
> >> Hi Jukka, all,
> >>
> >> I was asking about applying WFS 1.1.0 FES filter (while 
> cascading, but
> >> this is not the issue). I don't get any error message, rather the
> >> filter seems not to be applied. Documentation
> >> (http://mapserver.org/ogc/filter_encoding.html#use-of-filter-e
> > ncoding-in-mapserver)
> >> mentions FES 1.0.0, so the question is whether WFS 1.1.0 
> filtering is
> >> supported.
> >>
> >> The original email can be found here:
> >> http://lists.osgeo.org/pipermail/mapserver-users/2011-November
> > /070726.html
> >>
> >> Thanks a lot,
> >>
> >> Michal
> >>
> >> 2011/11/17 Rahkonen Jukka <Jukka.Rahkonen at mmmtike.fi>:
> >> > Hi,
> >> >
> >> > Somebody was asking about cascading an external WMS 1.3.0
> >> server. I remember that the one who asked the questiod had
> >> captured a rather self-explaining error message like this one
> >> from our Mapserver 6.0
> >> > msBuildWMSLayerURL(): WMS connection error. MapServer
> >> supports only WMS 1.0.0 to 1.1.1 (please verify the VERSION
> >> parameter in the connection string).
> >> >
> >> > Perhaps it would be still worth adding a line about
> >> supported versions into the Limitations/TODO in document
> >> http://mapserver.org/ogc/wms_client.html
> >> >
> >> > -Jukka Rahkonen-
> >> > _______________________________________________
> >> > mapserver-users mailing list
> >> > mapserver-users at lists.osgeo.org
> >> > http://lists.osgeo.org/mailman/listinfo/mapserver-users
> >> >
> >>
>