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
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Via di Montramito 3/A
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Italy
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