Hi Maciej, Thanks for noticing the error in the ticket provided. I did a search on "*Linked Data Fragments endpoint returns IllegalStateException*" and found the correct ticket:
*https://phabricator.wikimedia.org/T270476 <https://phabricator.wikimedia.org/T270476>* (looks like the last two digits got chomped in Guillaume's message) I don't see the ticket assigned/triaged at the moment so I'll try to make sure it gets looked at in our next planning cycle. Sorry for the delay. Ryan On Tue, Jan 12, 2021 at 8:29 AM Maciej Gawinecki <mgawine...@gmail.com> wrote: > Hi Guillaume, > > Thanks for reporting the issue in the bug tracker. Is the link you have > provided, https://phabricator.wikimedia.org/T2704, correct? > > The last activity in that ticket was in 2014... > > Thanks, > Maciej Gawinecki > > czw., 17 gru 2020 o 16:05 Maciej Gawinecki <mgawine...@gmail.com> > napisał(a): > >> Hi, >> >> I am trying to get alternative names of given names in WikiData with the >> following simple query: >> >> PREFIX ps: <http://www.wikidata.org/prop/direct/> >> PREFIX wd: <http://www.wikidata.org/entity/> >> PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#> >> CONSTRUCT {?s rdfs:label ?o} >> WHERE { ?s ps:P31 wd:Q202444. ?s rdfs:label ?o} >> LIMIT 1000 >> >> Initially, the query was much more complex, but I was getting time-outs >> on the public WikiData SPARQL endpoint. I decided to use Linked Data >> Fragments to offload some filtering from the server to the client. >> >> comunica-sparql "https://query.wikidata.org/bigdata/ldf"; -f query > >> given_names.n3 >> >> (where "query" is a file with the SPARQL query shown above). >> Unfortunately, the client tries to get output from the 3rd page, I am >> getting the following error: >> >> Could not retrieve >> https://query.wikidata.org/bigdata/ldf?subject=http%3A%2F%2Fwww.wikidata.org%2Fentity%2FQ21147790&predicate=http%3A%2F%2Fwww.w3.org%2F2000%2F01%2Frdf-schema%23label&page=3 >> (500: unknown error) >> >> Following the link in fact returns HTTP 500 error with >> >> Error details >> java.lang.IllegalStateException >> >> The link points to the 3rd page. It works if you try to go the second >> page: >> https://query.wikidata.org/bigdata/ldf?subject=http%3A%2F%2Fwww.wikidata.org%2Fentity%2FQ21147790&predicate=http%3A%2F%2Fwww.w3.org%2F2000%2F01%2Frdf-schema%23label&page=2 >> >> Is this a bug or a limitation of a service? >> >> With kind regards, >> Maciej Gawinecki >> > _______________________________________________ > Wikidata mailing list > Wikidata@lists.wikimedia.org > https://lists.wikimedia.org/mailman/listinfo/wikidata >
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