Hi all
I have two layers that I query together via WMS, and I'd like to order
features between them as in the "z-ordering across layers" example in
the doc.
I style the layers in YSLD.
In my first style, i have a bunch of FeatureTypeStyles, and only the
last one has a "x-sortBy" property.
In my second style, all FeatureTypeStyles have a "x-sortBy" property and
a "x-sortByGroup" property.
The problem is that as soon as I add the "x-sortByGroup" property in the
first layer's style, WMS rendering breaks with this stack trace :
java.lang.NullPointerException
at
org.geotools.renderer.lite.ZGroupLayerFactory.ensureSortProperties(ZGroupLayerFactory.java:175)
at
org.geotools.renderer.lite.ZGroupLayerFactory.buildNewFeatureLayer(ZGroupLayerFactory.java:159)
at
org.geotools.renderer.lite.ZGroupLayerFactory.addToSplitLayers(ZGroupLayerFactory.java:144)
at
org.geotools.renderer.lite.ZGroupLayerFactory.arrangeOnZGroups(ZGroupLayerFactory.java:121)
at
org.geotools.renderer.lite.ZGroupLayerFactory.filter(ZGroupLayerFactory.java:85)
at
org.geotools.renderer.lite.StreamingRenderer.paint(StreamingRenderer.java:803)
at
org.geoserver.wms.map.RenderedImageMapOutputFormat.produceMap(RenderedImageMapOutputFormat.java:569)
[...]
(I don't know if further trace is relevant, I think the problem is in
ens ensureSortProperties)
What's wrong with this style ?
PS : how come I can't find any YSLD example anymore ? The YSLD reference
does not mention the vendor options like x-sortBy anymore, is this
format being abandonned ?
Thanks a lot !
Best regards
--
Arnaud
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