Added check on descriptions in obda and r2rml
Added pretty and ugly r2rml
Merge branch 'feature/r2rml' of github.com:ontop/ontop into feature/r2rml
Merge branch 'develop' into feature/r2rml
Fixed OBDAMappingTransformer when we have a predicate object map with a
variable instead of a function.
Changed R2RMlWriter to consider also the ontology
Added comments to the test
put the r2rml features into a separated module
rename package it.unibz.krdb.obda.sesame.r2rml to it.unibz.krdb.obda.r2rml
make the ontology optional in the r2rml converter
Merge branch 'feature/r2rml' into develop
fix bug with null when ontology is not needed
Merge branch 'develop' into feature/r2rml