I have been testing some queries to a complex feature service using app-schema and am getting the following exception report for one query:
<ows:ExceptionReport version="1.0.0"
xsi:schemaLocation="http://www.opengis.net/ows http://xxxx.geosciml.org/xxxxxxxx/schemas/ows/1.0.0/owsExceptionReport.xsd"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:ows="http://www.opengis.net/ows">
<ows:Exception exceptionCode="NoApplicableCode">
<ows:ExceptionText>java.lang.ClassCastException: org.geotools.feature.NameImpl cannot be cast to org.opengis.feature.type.AttributeDescriptor
org.geotools.feature.NameImpl cannot be cast to org.opengis.feature.type.AttributeDescriptor</ows:ExceptionText>
</ows:Exception>
</ows:ExceptionReport>
Details as below:
Tested versions v2.3.1 and nightly build of 2013-05-09
The source data is in PostGIS with the tables created by the scripts in https://www.seegrid.csiro.au/subversion/GeoSciML/cgi-reference-dataset/tags/2013-05-15/data/database/cgi-reference-postgis.sql
The GeoServer app-schema configuration files are as in the data directory https://www.seegrid.csiro.au/subversion/GeoSciML/cgi-reference-dataset/tags/2013-05-15/services/geoserver/postgis/data
app-schema joining has been switched on.
The query which fails with the above exception is:
Query 1 (fails)
---
<?xml version="1.0" encoding="UTF-8"?>
<wfs:GetFeature xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.opengis.net/wfs http://schemas.opengis.net/wfs/1.1.0/wfs.xsd"
xmlns:gsml="http://xmlns.geosciml.org/GeoSciML-Core/3.1"
xmlns:gsmlgu="http://xmlns.geosciml.org/GeologicUnit/3.1" xmlns:ogc="http://www.opengis.net/ogc"
xmlns:wfs="http://www.opengis.net/wfs"
xmlns:gml="http://www.opengis.net/gml/3.2" service="WFS"
version="1.1.0"
maxFeatures="100"
outputFormat="gml32">
<wfs:Query typeName="gsml:MappedFeature">
<ogc:Filter>
<ogc:PropertyIsEqualTo>
<ogc:PropertyName>gsml:specification/gsmlgu:GeologicUnit/gsml:relatedFeature/gsmlga:GeologicHistory/gsml:relatedFeature/gsmlga:GeologicEvent/gsmlga:olderNamedAge/@xlink:href</ogc:PropertyName>
<ogc:Literal>http://resource.geosciml.org/classifier/ics/ischart/Devonian</ogc:Literal>
</ogc:PropertyIsEqualTo>
</ogc:Filter>
</wfs:Query>
</wfs:GetFeature>
---
A similar query but which queries some element rather than attribute content below works correctly to retrieve the matching features.
Query 2 (succeeds)
---
<?xml version="1.0" encoding="UTF-8"?>
<wfs:GetFeature xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.opengis.net/wfs http://schemas.opengis.net/wfs/1.1.0/wfs.xsd"
xmlns:gsml="http://xmlns.geosciml.org/GeoSciML-Core/3.1"
xmlns:gsmlgu="http://xmlns.geosciml.org/GeologicUnit/3.1" xmlns:ogc="http://www.opengis.net/ogc"
xmlns:wfs="http://www.opengis.net/wfs"
xmlns:gml="http://www.opengis.net/gml/3.2" service="WFS"
version="1.1.0"
maxFeatures="100"
outputFormat="gml32">
<wfs:Query typeName="gsml:MappedFeature">
<ogc:Filter>
<ogc:PropertyIsEqualTo>
<ogc:PropertyName>gsml:specification/gsmlgu:GeologicUnit/gsml:relatedFeature/gsmlga:GeologicHistory/gsml:relatedFeature/gsmlga:GeologicEvent/gsmlga:eventEnvironment/swe:Category/swe:label</ogc:PropertyName>
<ogc:Literal>terrestrial setting</ogc:Literal>
</ogc:PropertyIsEqualTo>
</ogc:Filter>
</wfs:Query>
</wfs:GetFeature>
---
Another query very similar to Query 1 that queries the contents of the same xlink:href attribute but queries on gsmlgu:GeologicUnit features rather than the parent gsml:MappedFeature features of Query 1 succeeds in retrieving the matching features:
Query 3 (succeeds)
---
<?xml version="1.0" encoding="UTF-8"?>
<wfs:GetFeature xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.opengis.net/wfs http://schemas.opengis.net/wfs/1.1.0/wfs.xsd"
xmlns:gsmlgu="http://xmlns.geosciml.org/GeologicUnit/3.1" xmlns:ogc="http://www.opengis.net/ogc"
xmlns:wfs="http://www.opengis.net/wfs"
xmlns:gml="http://www.opengis.net/gml/3.2" service="WFS"
version="1.1.0"
maxFeatures="100"
outputFormat="gml32">
<wfs:Query typeName="gsmlgu:GeologicUnit">
<ogc:Filter>
<ogc:PropertyIsEqualTo>
<ogc:PropertyName>gsml:relatedFeature/gsmlga:GeologicHistory/gsml:relatedFeature/gsmlga:GeologicEvent/gsmlga:olderNamedAge/@xlink:href</ogc:PropertyName>
<ogc:Literal>http://resource.geosciml.org/classifier/ics/ischart/Devonian</ogc:Literal>
</ogc:PropertyIsEqualTo>
</ogc:Filter>
</wfs:Query>
</wfs:GetFeature>
---
Any ideas? Should I report a bug?
Marcus Sen
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