Subject: | rr:subjectMap rr:class without an rr:objectMap gives error |
rr:subjectMap rr:class without an rr:objectMap gives error.
"Can't use an undefined value as a HASH reference at /usr/local/share/perl5/RDF/RDB2RDF/Simple.pm line 225."
But that's allowed: http://www.w3.org/TR/r2rml/#typing.
There's an easy workaround: instead of rr:class <foo>, use
rr:objectMap [rr:predicate rdf:type; rr:object <foo>]
so I've set severity as low