NME when using label service and rdfs:label predicate with the same variable
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	• Jonas
	Jul 14 2017, 6:38 PM

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Aklapper

• Jonas

Lucas_Werkmeister_WMDE

Mbch331

PokestarFan

Smalyshev

Description

It should be possible to use rdfs:label and label:service without conflicts

Example:

SELECT ?item ?itemLabel ?instance_of ?instance_ofLabel WHERE {
  ?item wdt:P31 wd:Q146.
  SERVICE wikibase:label { bd:serviceParam wikibase:language "en". }

  ?item wdt:P31 ?instance_of.
  ?instance_of rdfs:label ?instance_ofLabel.
  FILTER((LANG(?instance_ofLabel)) = "en")
}

Details

Related Changes in Gerrit:

	Subject	Repo	Branch	Lines +/-
	Fix NME on bind variable both by LabelService and some other clause	wikidata/query/rdf	master	+130 -12

Customize query in gerrit

Related Objects
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		Status	Subtype	Assigned	Task
		Resolved		Igorkim78	T235759 [TRACKING] WDQS / Blazegraph optimization / bug fixes
		Resolved		• debt	T170704 NME when using label service and rdfs:label predicate with the same variable

Event Timeline

• Jonas created this task.Jul 14 2017, 6:38 PM

Restricted Application added a project: Discovery-ARCHIVED. · View Herald TranscriptJul 14 2017, 6:38 PM

Restricted Application added a subscriber: Aklapper. · View Herald Transcript

Could you describe a bit more what is wrong now?

I tried to run the query and I get the following error:

java.util.concurrent.ExecutionException: java.util.concurrent.ExecutionException: org.openrdf.query.QueryEvaluationException: com.bigdata.rdf.internal.NotMaterializedException: TermId(14703282L)

Smalyshev renamed this task from label:service and rdfs:label should not conflict to NME when using label service and rdfs:label predicate with the same variable.Jul 14 2017, 7:17 PM

Smalyshev triaged this task as Medium priority.

Smalyshev moved this task from Incoming to Current work on the Wikidata-Query-Service board.Jul 17 2017, 9:19 PM

Looks like the same issue as T159723: bound variable + SERVICE = NME.

Restricted Application added a subscriber: PokestarFan. · View Herald TranscriptJul 22 2017, 12:02 AM

Smalyshev moved this task from Current work to Blazegraph on the Wikidata-Query-Service board.Jul 22 2017, 12:03 AM

Smalyshev merged a task: T172925: Label service in subquery and outer query causes NotMaterializedException.Aug 29 2017, 12:00 AM

Smalyshev added a subscriber: Lucas_Werkmeister_WMDE.

Change 533117 had a related patch set uploaded (by Igor Kim; owner: Igor Kim):
[wikidata/query/rdf@master] Fix NME on bind variable both by LabelService and some other clause

https://gerrit.wikimedia.org/r/533117

gerritbot added a project: Patch-For-Review.Aug 28 2019, 11:40 PM

Smalyshev added a project: Discovery-Wikidata-Query-Service-Sprint.Aug 29 2019, 9:40 PM

Smalyshev moved this task from Backlog to Needs review on the Discovery-Wikidata-Query-Service-Sprint board.

Change 533117 merged by jenkins-bot:
[wikidata/query/rdf@master] Fix NME on bind variable both by LabelService and some other clause

https://gerrit.wikimedia.org/r/533117

Smalyshev moved this task from Needs review to Done on the Discovery-Wikidata-Query-Service-Sprint board.Aug 29 2019, 9:44 PM

Maintenance_bot removed a project: Patch-For-Review.Aug 29 2019, 10:10 PM

• debt closed this task as Resolved.Sep 5 2019, 6:43 PM

• debt claimed this task.

Gehel added a parent task: T235759: [TRACKING] WDQS / Blazegraph optimization / bug fixes.Oct 17 2019, 12:42 PM