yes that is normal, if there is no matching subgraph in the graph SPARQL wont retrieve data.
make the following pattern optional in the query to retrieve the "missing" statements: ?author swrc:affiliation ?affiliation. On Mon, Nov 25, 2019 at 5:30 PM Yusniel Hidalgo Delgado <yhdelg...@uci.cu.invalid> wrote: > Hello all, > > I am trying to load an RDF graph to Jena Fuseki (the latest release). The > load process is completed without any warn or error, however, when I try to > query the loaded RDF, some triples are missed. Here are the test RDF graph, > the SPARQL query, and the result. I can't understand what is going on. Any > help? > > RDF graph: > > <?xml version="1.0"?> > <rdf:RDF > xmlns:vocab="http://localhost:2020/vocab/"; > xmlns:dc="http://purl.org/dc/elements/1.1/"; > xmlns:map="http://localhost:2020/#"; > xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"; > xmlns:bibo="http://purl.org/ontology/bibo/"; > xmlns:foaf="http://xmlns.com/foaf/0.1/"; > xmlns:db="http://localhost:2020/"; > xmlns:owl="http://www.w3.org/2002/07/owl#"; > xmlns:dcterms="http://purl.org/dc/terms/"; > xmlns:xsd="http://www.w3.org/2001/XMLSchema#"; > xmlns:fabio="http://purl.org/spar/fabio/"; > xmlns:dbpedia-owl="http://dbpedia.org/ontology/"; > xmlns:rdfs="http://www.w3.org/2000/01/rdf-schema#"; > xmlns:swrc="http://swrc.ontoware.org/ontology#"; > xml:base="http://localhost:2020/"; > > <rdf:Description rdf:about="article/1532"> > <swrc:journal rdf:resource="journal/4"/> > <fabio:hasPublicationYear rdf:datatype=" > http://www.w3.org/2001/XMLSchema#integer";>2008</fabio:hasPublicationYear> > <bibo:uri>http://www.medisur.sld.cu/index.php/medisur/article/view/353</bibo:uri> > > <fabio:abstract>Some text here.</fabio:abstract> > <dc:source>Medisur; Vol 6, No 1 (2008); 22-27</dc:source> > <dc:title>Efectividad del misoprostol para el aborto en el primer > trimestre del embarazo en adolescentes.</dc:title> > <dc:identifier>oai:ojs.localhost:article/353</dc:identifier> > <dc:date > rdf:datatype="http://www.w3.org/2001/XMLSchema#date";>2008-04-02</dc:date> > > <rdfs:label>Efectividad del misoprostol para el aborto en el primer > trimestre del embarazo en adolescentes.</rdfs:label> > <rdf:type rdf:resource="http://purl.org/spar/fabio/JournalArticle"/> > <dc:creator rdf:resource="author/3037"/> > <dc:creator rdf:resource="author/3038"/> > <dc:creator rdf:resource="author/3039"/> > <dc:creator rdf:resource="author/3040"/> > <dc:creator rdf:resource="author/3041"/> > <dc:creator rdf:resource="author/3042"/> > <fabio:InCollection rdf:resource="set/36"/> > </rdf:Description> > <rdf:Description rdf:about="author/3037"> > <foaf:name>Práxedes Rojas Quintana</foaf:name> > <rdfs:label>Práxedes Rojas Quintana</rdfs:label> > <rdf:type rdf:resource="http://xmlns.com/foaf/0.1/Person"/> > </rdf:Description> > <rdf:Description rdf:about="author/3038"> > <foaf:name>Pedro Ayo Naranjo</foaf:name> > <rdfs:label>Pedro Ayo Naranjo</rdfs:label> > <rdf:type rdf:resource="http://xmlns.com/foaf/0.1/Person"/> > </rdf:Description> > <rdf:Description rdf:about="author/3039"> > <foaf:name>Alberto Jorge Fernández</foaf:name> > <rdfs:label>Alberto Jorge Fernández</rdfs:label> > <rdf:type rdf:resource="http://xmlns.com/foaf/0.1/Person"/> > </rdf:Description> > <rdf:Description rdf:about="author/3040"> > <foaf:name>Israel Sotolongo Castro</foaf:name> > <rdfs:label>Israel Sotolongo Castro</rdfs:label> > <rdf:type rdf:resource="http://xmlns.com/foaf/0.1/Person"/> > </rdf:Description> > <rdf:Description rdf:about="author/3041"> > <foaf:name>Joan Hernández Cabrera</foaf:name> > <rdfs:label>Joan Hernández Cabrera</rdfs:label> > <rdf:type rdf:resource="http://xmlns.com/foaf/0.1/Person"/> > </rdf:Description> > <rdf:Description rdf:about="author/3042"> > <swrc:affiliation>Hospital provincial universitario “Dr. Gustavo > Aldereguía Lima”. Cienfuegos.</swrc:affiliation> > <foaf:name>Annia Najarro</foaf:name> > <rdfs:label>Annia Najarro</rdfs:label> > <rdf:type rdf:resource="http://xmlns.com/foaf/0.1/Person"/> > </rdf:Description> > <rdf:Description rdf:about="set/36"> > <foaf:name>Artículos Originales</foaf:name> > <rdfs:label>Artículos Originales</rdfs:label> > <rdf:type rdf:resource="http://purl.org/spar/fabio/ItemCollection"/> > </rdf:Description> > </rdf:RDF> > > SPARQL query: > > prefix dc: <http://purl.org/dc/elements/1.1/> > prefix : <http://localhost/metharto/> > prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> > prefix ns: <http://localhost/metharto/#> > prefix ns: <http://localhost/metharto/#> > prefix foaf: <http://xmlns.com/foaf/0.1/> > prefix bibo: <http://purl.org/ontology/bibo/> > prefix xsd: <http://www.w3.org/2001/XMLSchema#> > prefix rr: <http://www.w3.org/ns/r2rml#> > prefix map: <http://localhost/metharto/#> > prefix map: <http://localhost/metharto/#> > prefix swrc: <http://swrc.ontoware.org/ontology#> > prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> > prefix fabio: <http://purl.org/spar/fabio/> > prefix vocab: <http://localhost/metharto/vocab/> > SELECT ?s ?author ?title ?name ?affiliation ?abstract ?uri ?year WHERE { > ?s a fabio:JournalArticle. > ?s dc:title ?title. > ?s fabio:abstract ?abstract. > ?s bibo:uri ?uri. > ?s fabio:hasPublicationYear ?year. > ?s dc:creator ?author. > ?author foaf:name ?name. > ?author swrc:affiliation ?affiliation. > filter(regex(?title, "Efectividad del misoprostol para el aborto","i")) > } > limit 100 > > Query result: > > { > "head": { > "vars": [ "s" , "author" , "title" , "name" , "affiliation" , "abstract" , > "uri" , "year" ] > } , > "results": { > "bindings": [ > { > "s": { "type": "uri" , "value": "http://localhost:2020/article/1532"; } , > "author": { "type": "uri" , "value": "http://localhost:2020/author/3042"; > } , > "title": { "type": "literal" , "value": "Efectividad del misoprostol para > el aborto en el primer trimestre del embarazo en adolescentes." } , > "name": { "type": "literal" , "value": "Annia Najarro" } , > "affiliation": { "type": "literal" , "value": "Hospital provincial > universitario \u201CDr. Gustavo Aldereguía Lima\u201D. Cienfuegos." } , > "abstract": { "type": "literal" , "value": "Some text here." } , > "uri": { "type": "literal" , "value": " > http://www.medisur.sld.cu/index.php/medisur/article/view/353"; } , > "year": { "type": "literal" , "datatype": " > http://www.w3.org/2001/XMLSchema#integer"; , "value": "2008" } > } > ] > } > } > > It seems that the authors without affiliation triple aren't in the RDF > graph. It is normal this behavior? > > Best regards. > Yusniel Hidalgo. > > 1519-2019: Aniversario 500 de la Villa de San Cristóbal de La Habana > > Por La Habana, lo más grande. #Habana500 #UCIxHabana500 > > -- --- Marco Neumann KONA
