I want to create a RDF view model on a table with a database column GEOWKT_LATLONG. This column is of type CLOB.
I use the prefix
@prefix orageo: <http://xmlns.oracle.com/rdf/geo/> .
@prefix rr: <http://www.w3.org/ns/r2rml#>.
and the mapping is
rr:predicateObjectMap [
rr:predicate geosparql:hasGeometry;
rr:objectMap [ rr:column "GEOWKT_LATLONG"; rr:datatype orageo:WKTLiteral ]
]
when I run the statement "sem_apis.create_rdfview_model", I get the following error message:
Error report -
ORA-13199: Incompatible types:
Database Column (GEOWKT_LATLONG) typecode = 112 ((UNSUPPORTED DBMS_TYPES TYPECODE: 112)(0,0))
R2RML mapping specified type = <http://xmlns.oracle.com/rdf/geo/WKTLiteral>
ideal RDF datatype: UNKNOWN
[
ORA-06512: in "MDSYS.SDO_RDF_INTERNAL", regel 13806
]
ORA-06512: in "MDSYS.SDO_RDF", regel 3776
ORA-06512: in "MDSYS.SDO_RDF", regel 3849
ORA-06512: in "MDSYS.RDF_APIS", regel 1276
ORA-06512: in regel 2
13199. 00000 - "%s"
*Cause: This is an internal error.
*Action: Contact Oracle Support Services.
Is there someone to help me to solve this problem.