Hi,
judging from the source code there is a Resource in the SELECT
projection part of a SPIN query. I have not encountered such a
situation, so I have no immediate idea off the top of my head. You may
need to debug this further - you have the source code and can insert
debugging code if needed to see what kind of Resource this is.
Holger
On 7/03/2017 4:41, Goblank wrote:
Hi All,
I am facing issues in converting certain queries from SPARQL to SPIN
in TBC, the back to SPARQL using the SPIN API.
This is the error I that gets thrown.
ERROR [main:SPINQueryFinder@110] - Could not parse SPIN query
java.lang.ClassCastException:
org.apache.jena.rdf.model.impl.ResourceImpl cannot be cast to
org.topbraid.spin.model.print.Printable
at
org.topbraid.spin.model.impl.SelectImpl.printSPINRDF(SelectImpl.java:118)
at org.topbraid.spin.model.impl.QueryImpl.print(QueryImpl.java:117)
at org.topbraid.spin.model.impl.SubQueryImpl.print(SubQueryImpl.java:46)
at
org.topbraid.spin.model.impl.ElementListImpl.print(ElementListImpl.java:139)
at
org.topbraid.spin.model.impl.AbstractSPINResourceImpl.printNestedElementList(AbstractSPINResourceImpl.java:132)
at org.topbraid.spin.model.impl.QueryImpl.printWhere(QueryImpl.java:224)
at
org.topbraid.spin.model.impl.ConstructImpl.printSPINRDF(ConstructImpl.java:55)
at org.topbraid.spin.model.impl.QueryImpl.print(QueryImpl.java:117)
at
org.topbraid.spin.arq.ARQFactory.createCommandString(ARQFactory.java:140)
at
org.topbraid.spin.util.SPINQueryFinder.createCommandWrapper(SPINQueryFinder.java:140)
at org.topbraid.spin.util.SPINQueryFinder.add(SPINQueryFinder.java:101)
at
org.topbraid.spin.util.SPINQueryFinder.getClass2QueryMap(SPINQueryFinder.java:182)
... rest is invoking code ...
Unfortunately I do not have permission to share the original query,
and am trying to create an anonymized query where I can re-create the
problem. However, was wondering if this channel was aware of specific
scenarios where this might happen
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