SpatialIndex.getSpatialIndexItems fails on blank nodes

[Aklakan]

Version

5.3.0-SNAPSHOT

What happened?

The method should ignore data.
Wikidata may use blank nodes to indicate absent values - transforming this to geosparql vocab directly may cause introduction of these blank nodes as geometries.

Relevant output and stacktrace

2025-01-17 10:24:11] SpatialIndex INFO  building spatial index for graph https://data.coypu.org/wikidata/business/ ...
[2025-01-17 10:24:11] SpatialIndex INFO  Feature-hasGeometry-Geometry statements found.
[2025-01-17 10:24:11] Fuseki     WARN  [66] RC = 500 : _:0d6264590683c987ba32109649e59982
org.apache.jena.rdf.model.LiteralRequiredException: _:0d6264590683c987ba32109649e59982
        at org.apache.jena.rdf.model.impl.ResourceImpl.asLiteral(ResourceImpl.java:133) ~[jena-fuseki-server-5.0.0-SNAPSHOT.jar:5.0.0-SNAPSHOT]
        at org.apache.jena.geosparql.spatial.SpatialIndex.getGeometryLiteralIndexItems(SpatialIndex.java:631) ~[jena-fmod-geosparql-0.0.0-SNAPSHOT.jar:?]
        at org.apache.jena.geosparql.spatial.SpatialIndex.getSpatialIndexItems(SpatialIndex.java:596) ~[jena-fmod-geosparql-0.0.0-SNAPSHOT.jar:?]
        at org.apache.jena.geosparql.spatial.SpatialIndex.buildSpatialIndexTree(SpatialIndex.java:356) ~[jena-fmod-geosparql-0.0.0-SNAPSHOT.jar:?]
        at org.apache.jena.geosparql.spatial.SpatialIndex.buildSpatialIndex(SpatialIndex.java:452) ~[jena-fmod-geosparql-0.0.0-SNAPSHOT.jar:?]
        at org.apache.jena.fuseki.mod.geosparql.SpatialIndexComputeService.doPost(SpatialIndexComputeService.java:127) ~[jena-fmod-geosparql-0.0.0-SNAPSHOT.jar:?]
        at org.apache.jena.fuseki.servlets.ActionREST.doPost$(ActionREST.java:96) ~[jena-fuseki-server-5.0.0-SNAPSHOT.jar:5.0.0-SNAPSHOT]
        at org.apache.jena.fuseki.servlets.ActionREST.execute(ActionREST.java:45) ~[jena-fuseki-server-5.0.0-SNAPSHOT.jar:5.0.0-SNAPSHOT]
        at org.apache.jena.fuseki.servlets.ActionService.executeLifecycle(ActionService.java:58) ~[jena-fuseki-server-5.0.0-SNAPSHOT.jar:5.0.0-SNAPSHOT]
        at org.apache.jena.fuseki.servlets.ActionREST.execAny(ActionREST.java:159) ~[jena-fuseki-server-5.0.0-SNAPSHOT.jar:5.0.0-SNAPSHOT]
        at org.apache.jena.fuseki.servlets.ActionProcessor.execPost(ActionProcessor.java:50) ~[jena-fuseki-server-5.0.0-SNAPSHOT.jar:5.0.0-SNAPSHOT]
        at org.apache.jena.fuseki.servlets.ActionProcessor.process(ActionProcessor.java:34) ~[jena-fuseki-server-5.0.0-SNAPSHOT.jar:5.0.0-SNAPSHOT]

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