UNOFFICIAL

Hi Geoserver users,

We have several layers built using the app-schema extension that are 
gmlsf:ComplianceLevel = 0, so are simple features, but geoserver incorrectly 
evaluating them to be complex-valued properties for some functionality.
This means that the WFS KML and shapefile outputFormats are not available or 
throwing the below exception, and DescribeFeatureType is behaving like a 
complex service and not returning the list of fields - so impacting the general 
QGIS and ESRI wfs layer imports.

<ServiceExceptionReport xmlns=http://www.opengis.net/ogc 
xmlns:xsi=http://www.w3.org/2001/XMLSchema-instance version="1.2.0" 
xsi:schemaLocation=http://www.opengis.net/ogc 
http://schemas.opengis.net/wfs/1.0.0/OGC-exception.xsd<http://www.opengis.net/ogc%20http:/schemas.opengis.net/wfs/1.0.0/OGC-exception.xsd>>
<ServiceException> java.lang.ClassCastException: class 
org.geoserver.wfs.TypeInfoCollectionWrapper$Complex cannot be cast to class 
org.geotools.data.simple.SimpleFeatureCollection 
(org.geoserver.wfs.TypeInfoCollectionWrapper$Complex and 
org.geotools.data.simple.SimpleFeatureCollection are in unnamed module of 
loader org.apache.catalina.loader.ParallelWebappClassLoader @21694e53) class 
org.geoserver.wfs.TypeInfoCollectionWrapper$Complex cannot be cast to class 
org.geotools.data.simple.SimpleFeatureCollection 
(org.geoserver.wfs.TypeInfoCollectionWrapper$Complex and 
org.geotools.data.simple.SimpleFeatureCollection are in unnamed module of 
loader org.apache.catalina.loader.ParallelWebappClassLoader @21694e53) 
</ServiceException>
</ServiceExceptionReport>


It also looks like the OGC API Features queryables requests are also unsupported

Error: response status is 500

{
  "type": "NoApplicableCode",
  "title": "Could not find acceptable representation"
}

These are a couple of the light view SF-0 schemas we are using
https://schemas.opengis.net/gsml/4.1/geosciml-lite.xsd
https://schemas.geoscience.gov.au/MineralTenementML/1.0/mineraltenementml.xsd

Could this be a bug, or have all layers built using the app-schema extension 
has always interpreted the layers as complex - so new functionality?

Kind regards,
Ursula

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