|Subject:||skip triples if any of S,P,O is null|
If a column value (or any of the columns in a rr:template) is null, an r2rml processor should skip the involved triple. If the rr:subjectMap column is null, it should skip all triples in that rr:TriplesMap There are several tests that require NULL values to be ignored, e.g., this one: The test result is here: But I repeated the test, and it fails (returns a row for Alice, which it shouldn’t). I fixed it in this pull request: It's together with an extension rrx:languageColumn (approved by Richard Cyganiak). It's my first time using Bitbucket, sorry for mixing two commits in one pull request.