java - how to return a detail information of URL/author from cidoc crm rdf file using sparql -


thank answer unfortunately not getting result in console, here attaching code, please guide making mistake. 

 filemanager.get().addlocatorclassloader(test.class.getclassloader());           model model=filemanager.get().loadmodel("h:/eclipseworkplace/museumdatabaserecommendation/src/data3.rdf"); string spr="prefix rdf:  <http://www.w3.org/1999/02/22-rdf-syntax-ns#>\n"+          "prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#>\n"+         "prefix crm:  <urn:x-stackoverflow:example#>\n"+         "\n"+         "select * where{\n"+         "   [ crm:e21_person/rdfs:label ?creator\n"+         "   ; crm:p108i_was_produced_by [ crm:p126_employed [ rdfs:label ?material ]\n"+         "                               ; crm:p4_has_time-span [ crm:p82_at_some_time_within ?timespan ]\n"+         "                               ]\n"+         "   ; crm:p3_has_note [ crm:p102_has_title\n"+         "                     ; rdfs:label ?title\n"+         "                     ]\n"+         "   ]\n"+         "  filter( ?creator = \"brett whiteley\" ).\n"+         "}";  query query = queryfactory.create(spr); //s2 = query above queryexecution qexe = queryexecutionfactory.create(  query,model ); //queryexecution qexe = queryexecutionfactory.sparqlservice( "http://dbpedia.org/sparql", query ); resultset results = qexe.execselect(); resultsetformatter.out(system.out, results, query);

my current output is

----------------------------------------- | creator | material | timespan | title | ========================================= -----------------------------------------

thanks time.

input data

in order facilitate readability, restructured model turtle syntax others read.

@prefix rdfs:  <http://www.w3.org/2000/01/rdf-schema#> . @prefix rdf:   <http://www.w3.org/1999/02/22-rdf-syntax-ns#> . @prefix crm:   <http://www.cidoc-crm.org/cidoc-crm/> .  <http://phdprototype.tk/collectionimage   /4d0bff17-5810-4644-a550-d35ee090d4a8.png>                                  "painting" ;         rdfs:label                 "brett whiteley" ;         crm:e21_person             [           <e39_actor> ;                                      rdfs:label  "brett whiteley"                                    ] ;         crm:e62_string             "painting\n" ;         crm:p108i_was_produced_by  [                     crm:e12_production ;                                      crm:p126_employed     [           crm:e57_material ;                                                              rdfs:label  "oil"                                                            ] ;                                      crm:p4_has_time-span  [                            crm:e52_time-span ;                                                              crm:p82_at_some_time_within  "\n      1976\n    "                                                            ]                                    ] ;         crm:p3_has_note            [           crm:p102_has_title ;                                      rdfs:label  "interior time past"                                    ] ;         crm:p7_took_place_at       [                          crm:e53_place ;                                      crm:e44_place_appellation  "    \n    5d\n    "                                    ] ;         crm:p91_has_unit           [           crm:e58_measurement_unit ;                                      rdfs:label  "182.0 h * 200.0 w cm"                                    ] .

there issues data. example, painting has rdf:type plain literal "painting", extremely bad. denoted a "painting" property-object pair. can execute query on data, may wish restructure ontology uses terms rdf:type properly.

query

for sample data provided, following query extract looking for:

prefix rdf:  <http://www.w3.org/1999/02/22-rdf-syntax-ns#> prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> prefix crm:  <http://www.cidoc-crm.org/cidoc-crm/>  select * where{    [ crm:e21_person/rdfs:label ?creator    ; crm:p108i_was_produced_by [ crm:p126_employed [ rdfs:label ?material ]                                ; crm:p4_has_time-span [ crm:p82_at_some_time_within ?timespan ]                                ]    ; crm:p3_has_note [ crm:p102_has_title                      ; rdfs:label ?title                      ]    ]   filter( ?creator = "brett whiteley" ). }

will result in:

---------------------------------------------------------------------------------- | creator          | material | timespan             | title                     | ================================================================================== | "brett whiteley" | "oil"    | "\n      1976\n    " | "interior time past" | ----------------------------------------------------------------------------------

note highly tailored particular sample data. need adjust query match structures allowed. (hypothetical) example, timespan instance may have crm:p82_at_some_time_span property, or may have crm:exampleproperty relates values. in case, you'd need modify query use property path match this.

example code

public static final string querystring = "prefix rdf:  <http://www.w3.org/1999/02/22-rdf-syntax-ns#>\n"+          "prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#>\n"+         "prefix crm:  <http://www.cidoc-crm.org/cidoc-crm/>\n"+         "\n"+         "select * where{\n"+         "   [ crm:e21_person/rdfs:label ?creator\n"+         "   ; crm:p108i_was_produced_by [ crm:p126_employed [ rdfs:label ?material ]\n"+         "                               ; crm:p4_has_time-span [ crm:p82_at_some_time_within ?timespan ]\n"+         "                               ]\n"+         "   ; crm:p3_has_note [ crm:p102_has_title\n"+         "                     ; rdfs:label ?title\n"+         "                     ]\n"+         "   ]\n"+         "  filter( ?creator = \"brett whiteley\" ).\n"+         "}"; public static final query query = queryfactory.create(querystring);  @test public void test() throws exception {      final model model = modelfactory.createdefaultmodel();     try( final inputstream in = this.getclass().getresourceasstream("/so.rdf") ) {         model.read(in, null, "rdf/xml");     }     model.write(system.out, "ttl");     system.out.println("=================================================================");     system.out.println(querystring);     system.out.println("=================================================================");     try( final queryexecution exec = queryexecutionfactory.create(query, model) ) {         resultsetformatter.out(system.out, exec.execselect(), query);     }  }

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