Hi,
currently you cannot specify the viewParams attribute in a WFS GetFeature
request embedded in a WPS Execute statement.
This is because parsing of WFS requests is done through geotools bindings
that are not aware of the viewParams attribute.
Having viewParams support is a nice improvement, in my opinion, since it
opens new scenarios for WPS processes involving sqlviews driven feature
types.
I tried an approach to get this done, and it's working, but I would like to
get more opinions on the "cleanest" way to do this kind of things.
Basically, what I tried to do is to replace the XSDDelegate responsible for
WFS requests parsing used in GeoTools with a custom one, using GeoServer
GetFeatureTypeBinding implementation (that is able to parse GeoServer
vendor params).
This is the related snippet in GS WPSConfiguration:
protected void configureContext(MutablePicoContainer container) {
super.configureContext(container);
...
Object wfsDelegate =
container.getComponentInstanceOfType(WFSParserDelegate.class);
container.unregisterComponentByInstance(wfsDelegate);
container.registerComponentInstance(new XSDParserDelegate(new
WFSConfiguration() {
@Override
protected void configureBindings(MutablePicoContainer
container) {
super.configureBindings(container);
container.registerComponentImplementation(WFS.GetFeatureType,
GetFeatureTypeBinding.class);
}
}));
}
Can you think of a simpler / cleaner approach?
Maybe we can create a GS WFSDelegate that is using full GS WFSConfiguration
objects, instead of the GT ones.
Any other idea?
--
Regards,
Mauro Bartolomeoli
==
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==
Dott. Mauro Bartolomeoli
@mauro_bart
Technical Lead
GeoSolutions S.A.S.
Via di Montramito 3/A
55054 Massarosa (LU)
Italy
phone: +39 0584 962313
fax: +39 0584 1660272
http://www.geo-solutions.it
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