AW: [Qgis-developer] WFS-T
Ziegler Stefan
Stefan.Ziegler at bd.so.ch
Fri Jul 30 09:15:50 EDT 2010
Hi Marco
this sounds very cool! I will test it with GeoServer.
regards
Stefan
----- Originalnachricht -----
Von: "Marco Hugentobler" <marco.hugentobler at sourcepole.ch>
Gesendet: Fre, 30.7.2010 15:12
An: qgis-developer at lists.osgeo.org ; qgis-user at lists.osgeo.org
Betreff: [Qgis-developer] WFS-T
Hi all
Recently, I've been busy implementing support for WFS editing (WFS-T). The
version in svn trunk now supports the transactional operations 'insert',
'update' and 'delete'. Feature locking is currently not supported.
The use of WFS editing is similar to other datasources: make layer editable,
do changes, commit or revert. On commit, the WFS provider sends the XML
messages for insert/ update/ delete.
There is however an additional difficulty: sometimes the datastore behind the
WFS has restrictions on inserting new features (e.g. database constraints). So
when receiving errors on insertion of features to the WFS, it is important to
carefully read the error message from the server. Unfortunately, these
messages are sometimes not really informative.
I've tested the client with a geoserver instance and a tinyows instance (but
with disabled schema check for tinyows). Unfortunately, servers to test WFS-T
are very rare. If you use another product (or encounter a bug with those two
mentioned servers) and have a public accessible instance, let me know.
Finally, I'd like to thank NaviGo (www.gonavigo.ca) for funding the
development of the WFS-T extension. With the support of the GPS live tracking
and WFS-T, NaviGo provides great help in bringing QGIS to the state-of-the-art
in collecting data.
Regards,
Marco
--
Dr. Marco Hugentobler
Sourcepole - Linux & Open Source Solutions
Webereistr. 66, CH-8134 Adliswil, Switzerland
marco.hugentobler at sourcepole.ch http://www.sourcepole.ch
Technical Advisor QGIS Project Steering Committee
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