[Qgis-developer] FOSS4G code sprint idea: improving SLD export and GeoServer compatibility

[Andrea Aime]

Hi,
at FOSS4G Bonn we'll have a bunch of QGis and GeoServer developers
participating at the code sprint, I would like to leverage the co-precence
and propose a "cross-project"
work idea, that is, to improve the chance that a style exported from QGis
can be
successfully imported and rendered in GeoServer.

On one side, I have had reports from GeoServer users showing documents that
were not valid XML (un-balanced tags)
or not schema compliant, like CSSProperty values containing a Filter
instead of an Expression... I don't know
if these issues are still present in the latest version of QGis, as you
imagine users tend to use a large variety of software versions,
some of which pretty old, but I see some open ticket in the QGis tracker
regarding the SLD export, so there might
be some work to do there.

On the other side, GeoServer has a preference for SLD 1.0, and SE 1.1
support definitely needs improvement,
at the same time and it could learn to use some of the QGis own extensions.
For example, the other day I've seen on stackexchange a export with a
"diamond" WellKnownName that is not part
of SE, but which would be trivial to add support for in GeoServer.

There are also other functionalities, like compositing, that are present in
both projects, but not in SE, having a way to export
them would also be good.

So I'd like to see if there is any QGis developer that would like to work
side by side
with me to bring the two projects a little bit closer in this respect.
I'll be at the code sprint after the conference, Saturday and Sunday.
Having someone contributing projects with some complex symbology to test
against would
also be a great way to keep the exercise interesting.

Anyone interested? :-)

Cheers
Andrea

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Ing. Andrea Aime
@geowolf
Technical Lead

GeoSolutions S.A.S.
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