[Mapbender-dev] Re: wfs gazetteer with umn mapserver wfs

[Michael Schulz]

Hi Devs,

after some detours and especially after some valuable hints from
Christoph on irc I came to this workaround, for the described problem,
when using UMN as WFS-Server and getting no results from WFS-Gazatteer
requests, because there is an obscure namespace problem with UMN-WFS
(it breaks down to: umn gives a featuretype name in the getcaps
without ns, this is stored in the mapbender db, when parsing
getfeature request, that stored value is used to go through the
getfeature result xml, that unfortunately now uses a namespace "ms:",
so mapbender code won't find any features).

My workaround is to ignore namespaces when searching for the result
features, by using the xpath function local-name(). This can be
applied in class_gml_factory around line 20, instead of:

  $gmlFeatureMembers = $gmlDoc->xpath("//" . $featureType->name);

you could write:

  $admin = new administration();
  $gmlFeatureMembers = $gmlDoc->xpath("//*[local-name()='".
$admin->sepNameSpace($featureType->name)."']" );

This ignores the namespace, but certainly leaves the xml untouched.
I've tested it with UMN and Geoserver. If someone wants to give it a
try, I'll be happy for any feedback.

Cheers, Michael


2009/7/14 Michael Schulz <mschulz at webgis.de>:
> Hi,
>
> I have a strange problem when using umn mapserver as a wfs-server for
> a gazetteer search. The problem is that the featuretype is announced
> in get getCaps as
>
> <Name>meinFeatureType</Name>.
>
>  When actually searching and issueing the getfeature request, the
> result is returned with featuremembers with the default ms namespace:
>
> <gml:featureMember><ms:meinFeatureType
> fid="meinFeatureType.007">...</gml:featureMember>.
>
> The problem is now that in the gml classes, the returned gml is
> accessed with the xpath function searching for the featuretype name as
> recieved from the getCapabilities response and since this name has no
> namespace it won't find the featuremembers...
>
> Is this a mapserver wfs misconfiguration on my side (i tried with
> wms_namespace_prefix ...) or a mapserver wfs bug or a mapbender bug?
> When using geoserver the featuretype namespace is also returned in the
> getcapabilities response.
>
> Thanks for your hints ... Michael
>
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-- 
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Aufwind durch Wissen!

Qualifizierte Open Source Schulungen bei der
http://www.foss-akademie.de/
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

-----------------------------------------------------------
Michael Schulz
mschulz at webgis.de

in medias res
Gesellschaft für Informationstechnologie mbH

+++ Bitte beachten Sie unsere neue Adresse und Durchwahl +++

Schwimmbadstraße 2
D-79100  Freiburg i. Br.

Tel:  +49 (0)761 705798-102
Tel:  +49 (0)761 705798-0
Fax: +49 (0)761 705798-09

+++ Bitte beachten Sie unsere neue Adresse und Durchwahl +++

http://www.webgis.de / http://www.zopecms.de
--------------------------------------------------------------
Geschäftsführer: Stefan Giese, Dr. Christof Lindenbeck
Eingetragen im Handelsregister HRB 5930 beim Amtsgericht Freiburg