[Wikidata-bugs] [Maniphest] [Commented On] T175561: Check distinct values (unique value) constraint on qualifiers and references

Wed, 27 Sep 2017 05:53:26 -0700

Lucas_Werkmeister_WMDE added a comment.

Two semantics questions:

  • Is it a constraint violation if the same value is used in a statement and elsewhere in a qualifier? Or should values only be distinct between all main snaks / all qualifiers / all references? (My current WIP implementation only checks uniqueness within one “kind” of snak – main snak, qualifier, or reference.)
  • Is it a constraint violation if the exact same reference (same hash, same RDF node) is used several times (on the same entity or on different entities) and includes a “distinct values” property?

TASK DETAIL
https://phabricator.wikimedia.org/T175561

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To: Lucas_Werkmeister_WMDE
Cc: gerritbot, Lucas_Werkmeister_WMDE, Aklapper, Lordiis, GoranSMilovanovic, Adik2382, Th3d3v1ls, Ramalepe, Liugev6, QZanden, Lewizho99, Maathavan, Agabi10, Izno, Wikidata-bugs, aude, Mbch331
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