rdf - Java + Jena + Rdf : 正しい sparql クエリの作成に助けが必要

Question

次のような RDF ファイルがあります ( test.rdf):

<?xml version="1.0"?>
<rdf:RDF xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns:vocab="http://www.datiopen.it/rdf/resource/vocab/" xmlns:owl="http://www.w3.org/2002/07/owl#" xmlns:db="http://www.datiopen.it/rdf/resource/" xmlns:xsd="http://www.w3.org/2001/XMLSchema#" xmlns:rdfs="http://www.w3.org/2000/01/rdf-schema#" xmlns:map="http://www.datiopen.it/rdf/resource/#" xmlns:dcterms="http://purl.org/dc/terms/" xml:base="http://www.datiopen.it/rdf/resource/" >
<rdf:Description rdf:about="http://www.w3.org/2000/01/rdf-schema#label">
<rdf:type rdf:resource="http://www.w3.org/1999/02/22-rdf-syntax-ns#Property"/>
</rdf:Description>
<rdf:Description rdf:about="vocab/view_tbeni_architettonici">
<rdfs:label>Trentino-Alto Adige - Beni architettonici ed artistici</rdfs:label>
<rdf:type rdf:resource="http://www.w3.org/2000/01/rdf-schema#Class"/>
</rdf:Description>
<rdf:Description rdf:about="vocab/view_tbeni_architettonici_do_serialuid">
<rdfs:label>Serial Id</rdfs:label>
<rdf:type rdf:resource="http://www.w3.org/1999/02/22-rdf-syntax-ns#Property"/>
</rdf:Description>
<rdf:Description rdf:about="vocab/view_tbeni_architettonici_gid">
<rdfs:label>gid</rdfs:label>
<rdf:type rdf:resource="http://www.w3.org/1999/02/22-rdf-syntax-ns#Property"/>
</rdf:Description>
<rdf:Description rdf:about="vocab/view_tbeni_architettonici_comune">
<rdfs:label>Comune</rdfs:label>
<rdf:type rdf:resource="http://www.w3.org/1999/02/22-rdf-syntax-ns#Property"/>
</rdf:Description>
<rdf:Description rdf:about="vocab/view_tbeni_architettonici_provincia">
<rdfs:label>Provincia</rdfs:label>
<rdf:type rdf:resource="http://www.w3.org/1999/02/22-rdf-syntax-ns#Property"/>
</rdf:Description>
<rdf:Description rdf:about="vocab/view_tbeni_architettonici_regione">
<rdfs:label>Regione</rdfs:label>
<rdf:type rdf:resource="http://www.w3.org/1999/02/22-rdf-syntax-ns#Property"/>
</rdf:Description>
<rdf:Description rdf:about="vocab/view_tbeni_architettonici_loc_no">
<rdfs:label>Localit&#224;</rdfs:label>
<rdf:type rdf:resource="http://www.w3.org/1999/02/22-rdf-syntax-ns#Property"/>
</rdf:Description>
<rdf:Description rdf:about="vocab/view_tbeni_architettonici_imm_no">
<rdfs:label>Nome</rdfs:label>
<rdf:type rdf:resource="http://www.w3.org/1999/02/22-rdf-syntax-ns#Property"/>
</rdf:Description>
<rdf:Description rdf:about="vocab/view_tbeni_architettonici_via_no">
<rdfs:label>Indirizzo</rdfs:label>
<rdf:type rdf:resource="http://www.w3.org/1999/02/22-rdf-syntax-ns#Property"/>
</rdf:Description>
<rdf:Description rdf:about="vocab/view_tbeni_architettonici_immuso_no">
<rdfs:label>Uso</rdfs:label>
<rdf:type rdf:resource="http://www.w3.org/1999/02/22-rdf-syntax-ns#Property"/>
</rdf:Description>
<rdf:Description rdf:about="vocab/view_tbeni_architettonici_immtpl_no">
<rdfs:label>Tipo</rdfs:label>
<rdf:type rdf:resource="http://www.w3.org/1999/02/22-rdf-syntax-ns#Property"/>
</rdf:Description>
<rdf:Description rdf:about="vocab/view_tbeni_architettonici_data_agg">
<rdfs:label>Data aggiornamento</rdfs:label>
<rdf:type rdf:resource="http://www.w3.org/1999/02/22-rdf-syntax-ns#Property"/>
</rdf:Description>
<rdf:Description rdf:about="vocab/view_tbeni_architettonici_tp_tutela">
<rdfs:label>Tipo tutela</rdfs:label>
<rdf:type rdf:resource="http://www.w3.org/1999/02/22-rdf-syntax-ns#Property"/>
</rdf:Description>
<rdf:Description rdf:about="vocab/view_tbeni_architettonici_imm_cd">
<rdfs:label>Codice immobile</rdfs:label>
<rdf:type rdf:resource="http://www.w3.org/1999/02/22-rdf-syntax-ns#Property"/>
</rdf:Description>
<rdf:Description rdf:about="vocab/view_tbeni_architettonici_prov_cd">
<rdfs:label>Codice provincia</rdfs:label>
<rdf:type rdf:resource="http://www.w3.org/1999/02/22-rdf-syntax-ns#Property"/>
</rdf:Description>
<rdf:Description rdf:about="vocab/view_tbeni_architettonici_cmp_cd">
<rdfs:label>Codice CMP</rdfs:label>
<rdf:type rdf:resource="http://www.w3.org/1999/02/22-rdf-syntax-ns#Property"/>
</rdf:Description>
<rdf:Description rdf:about="vocab/view_tbeni_architettonici_com_cd">
<rdfs:label>Codice comune</rdfs:label>
<rdf:type rdf:resource="http://www.w3.org/1999/02/22-rdf-syntax-ns#Property"/>
</rdf:Description>
<rdf:Description rdf:about="vocab/view_tbeni_architettonici_fraz_cd">
<rdfs:label>Codice Frazione</rdfs:label>
<rdf:type rdf:resource="http://www.w3.org/1999/02/22-rdf-syntax-ns#Property"/>
</rdf:Description>
<rdf:Description rdf:about="vocab/view_tbeni_architettonici_immtpl_cd">
<rdfs:label>Codice tipo immobile</rdfs:label>
<rdf:type rdf:resource="http://www.w3.org/1999/02/22-rdf-syntax-ns#Property"/>
</rdf:Description>
<rdf:Description rdf:about="vocab/view_tbeni_architettonici_immuso_cd">
<rdfs:label>Codice uso immobile</rdfs:label>
<rdf:type rdf:resource="http://www.w3.org/1999/02/22-rdf-syntax-ns#Property"/>
</rdf:Description>
<rdf:Description rdf:about="vocab/view_tbeni_architettonici_imm_prt_cd">
<rdfs:label>codice immobile PRT</rdfs:label>
<rdf:type rdf:resource="http://www.w3.org/1999/02/22-rdf-syntax-ns#Property"/>
</rdf:Description>
<rdf:Description rdf:about="vocab/view_tbeni_architettonici_prt">
<rdfs:label>PRT</rdfs:label>
<rdf:type rdf:resource="http://www.w3.org/1999/02/22-rdf-syntax-ns#Property"/>
</rdf:Description>
<rdf:Description rdf:about="vocab/view_tbeni_architettonici_cd_tutela">
<rdfs:label>Codice tutela</rdfs:label>
<rdf:type rdf:resource="http://www.w3.org/1999/02/22-rdf-syntax-ns#Property"/>
</rdf:Description>
<rdf:Description rdf:about="vocab/view_tbeni_architettonici_categoria">
<rdfs:label>Categoria</rdfs:label>
<rdf:type rdf:resource="http://www.w3.org/1999/02/22-rdf-syntax-ns#Property"/>
</rdf:Description>
<rdf:Description rdf:about="vocab/view_tbeni_architettonici_selez">
<rdfs:label>Selezione</rdfs:label>
<rdf:type rdf:resource="http://www.w3.org/1999/02/22-rdf-syntax-ns#Property"/>
</rdf:Description>
<rdf:Description rdf:about="vocab/view_tbeni_architettonici_label_2ad">
<rdfs:label>Etichetta_2AD</rdfs:label>
<rdf:type rdf:resource="http://www.w3.org/1999/02/22-rdf-syntax-ns#Property"/>
</rdf:Description>
<rdf:Description rdf:about="vocab/view_tbeni_architettonici_label">
<rdfs:label>Etichetta</rdfs:label>
<rdf:type rdf:resource="http://www.w3.org/1999/02/22-rdf-syntax-ns#Property"/>
</rdf:Description>
<rdf:Description rdf:about="vocab/view_tbeni_architettonici_glatitude">
<rdfs:label>DO_Y</rdfs:label>
<rdf:type rdf:resource="http://www.w3.org/1999/02/22-rdf-syntax-ns#Property"/>
</rdf:Description>
<rdf:Description rdf:about="vocab/view_tbeni_architettonici_glongitude">
<rdfs:label>DO_X</rdfs:label>
<rdf:type rdf:resource="http://www.w3.org/1999/02/22-rdf-syntax-ns#Property"/>
</rdf:Description>

<rdf:Description rdf:about="view_tbeni_architettonici/1">
<rdfs:label>view_tbeni_architettonici #1</rdfs:label>
<vocab:view_tbeni_architettonici_do_serialuid rdf:datatype="http://www.w3.org/2001/XMLSchema#integer">1</vocab:view_tbeni_architettonici_do_serialuid>
<dcterms:coverage rdf:resource="http://spcdata.digitpa.gov.it/Comune/H517" />
<vocab:view_tbeni_architettonici_loc_no></vocab:view_tbeni_architettonici_loc_no>
<vocab:view_tbeni_architettonici_imm_no>Chiesa di S. Antonio abate</vocab:view_tbeni_architettonici_imm_no>
<vocab:view_tbeni_architettonici_via_no></vocab:view_tbeni_architettonici_via_no>
<vocab:view_tbeni_architettonici_immuso_no>CHIESA</vocab:view_tbeni_architettonici_immuso_no>
<vocab:view_tbeni_architettonici_immtpl_no>CHIESA</vocab:view_tbeni_architettonici_immtpl_no>
<vocab:view_tbeni_architettonici_data_agg>10/04/2001</vocab:view_tbeni_architettonici_data_agg>
<vocab:view_tbeni_architettonici_tp_tutela>DICHIARATO DI INTERESSE CULTURALE AI SENSI DEL D.LGS. 22/01/2004 N. 42</vocab:view_tbeni_architettonici_tp_tutela>
<vocab:view_tbeni_architettonici_imm_cd>155.0004</vocab:view_tbeni_architettonici_imm_cd>
<vocab:view_tbeni_architettonici_prov_cd>22</vocab:view_tbeni_architettonici_prov_cd>
<vocab:view_tbeni_architettonici_cmp_cd>6</vocab:view_tbeni_architettonici_cmp_cd>
<vocab:view_tbeni_architettonici_com_cd>155</vocab:view_tbeni_architettonici_com_cd>
<vocab:view_tbeni_architettonici_fraz_cd>0</vocab:view_tbeni_architettonici_fraz_cd>
<vocab:view_tbeni_architettonici_immtpl_cd>18</vocab:view_tbeni_architettonici_immtpl_cd>
<vocab:view_tbeni_architettonici_immuso_cd>7</vocab:view_tbeni_architettonici_immuso_cd>
<vocab:view_tbeni_architettonici_imm_prt_cd>2</vocab:view_tbeni_architettonici_imm_prt_cd>
<vocab:view_tbeni_architettonici_prt>ECCLESIASTICA</vocab:view_tbeni_architettonici_prt>
<vocab:view_tbeni_architettonici_cd_tutela>1.00000000000</vocab:view_tbeni_architettonici_cd_tutela>
<vocab:view_tbeni_architettonici_categoria>Beni religiosi</vocab:view_tbeni_architettonici_categoria>
<vocab:view_tbeni_architettonici_selez>1</vocab:view_tbeni_architettonici_selez>
<vocab:view_tbeni_architettonici_label_2ad>T244</vocab:view_tbeni_architettonici_label_2ad>
<vocab:view_tbeni_architettonici_label>T245</vocab:view_tbeni_architettonici_label>
<vocab:view_tbeni_architettonici_glatitude>46.3958455087868</vocab:view_tbeni_architettonici_glatitude>
<vocab:view_tbeni_architettonici_glongitude>11.1224323995498</vocab:view_tbeni_architettonici_glongitude>
<rdf:type rdf:resource="vocab/view_tbeni_architettonici"/>
</rdf:Description>
<rdf:Description rdf:about="view_tbeni_architettonici/2">
<rdfs:label>view_tbeni_architettonici #2</rdfs:label>
<vocab:view_tbeni_architettonici_do_serialuid rdf:datatype="http://www.w3.org/2001/XMLSchema#integer">2</vocab:view_tbeni_architettonici_do_serialuid>
<dcterms:coverage rdf:resource="http://spcdata.digitpa.gov.it/Comune/H517" />
<vocab:view_tbeni_architettonici_loc_no></vocab:view_tbeni_architettonici_loc_no>
<vocab:view_tbeni_architettonici_imm_no>Maso S. Bartolomeo</vocab:view_tbeni_architettonici_imm_no>
<vocab:view_tbeni_architettonici_via_no></vocab:view_tbeni_architettonici_via_no>
<vocab:view_tbeni_architettonici_immuso_no>ABITAZIONE</vocab:view_tbeni_architettonici_immuso_no>
<vocab:view_tbeni_architettonici_immtpl_no>MASO</vocab:view_tbeni_architettonici_immtpl_no>
<vocab:view_tbeni_architettonici_data_agg>10/04/2001</vocab:view_tbeni_architettonici_data_agg>
<vocab:view_tbeni_architettonici_tp_tutela>DICHIARATO DI INTERESSE CULTURALE AI SENSI DEL D.LGS. 22/01/2004 N. 42</vocab:view_tbeni_architettonici_tp_tutela>
<vocab:view_tbeni_architettonici_imm_cd>155.0001</vocab:view_tbeni_architettonici_imm_cd>
<vocab:view_tbeni_architettonici_prov_cd>22</vocab:view_tbeni_architettonici_prov_cd>
<vocab:view_tbeni_architettonici_cmp_cd>6</vocab:view_tbeni_architettonici_cmp_cd>
<vocab:view_tbeni_architettonici_com_cd>155</vocab:view_tbeni_architettonici_com_cd>
<vocab:view_tbeni_architettonici_fraz_cd>0</vocab:view_tbeni_architettonici_fraz_cd>
<vocab:view_tbeni_architettonici_immtpl_cd>26</vocab:view_tbeni_architettonici_immtpl_cd>
<vocab:view_tbeni_architettonici_immuso_cd>1</vocab:view_tbeni_architettonici_immuso_cd>
<vocab:view_tbeni_architettonici_imm_prt_cd>3</vocab:view_tbeni_architettonici_imm_prt_cd>
<vocab:view_tbeni_architettonici_prt>PRIVATA</vocab:view_tbeni_architettonici_prt>
<vocab:view_tbeni_architettonici_cd_tutela>1.00000000000</vocab:view_tbeni_architettonici_cd_tutela>
<vocab:view_tbeni_architettonici_categoria>Manufatti insediativi</vocab:view_tbeni_architettonici_categoria>
<vocab:view_tbeni_architettonici_selez>0</vocab:view_tbeni_architettonici_selez>
<vocab:view_tbeni_architettonici_label_2ad></vocab:view_tbeni_architettonici_label_2ad>
<vocab:view_tbeni_architettonici_label></vocab:view_tbeni_architettonici_label>
<vocab:view_tbeni_architettonici_glatitude>46.39434215468</vocab:view_tbeni_architettonici_glatitude>
<vocab:view_tbeni_architettonici_glongitude>11.1090853812521</vocab:view_tbeni_architettonici_glongitude>
<rdf:type rdf:resource="vocab/view_tbeni_architettonici"/>
</rdf:Description>
.....
.....
.....
<rdf:Description rdf:about="view_tbeni_architettonici/1835">
<rdfs:label>view_tbeni_architettonici #1835</rdfs:label>
<vocab:view_tbeni_architettonici_do_serialuid rdf:datatype="http://www.w3.org/2001/XMLSchema#integer">1835</vocab:view_tbeni_architettonici_do_serialuid>
<dcterms:coverage rdf:resource="http://spcdata.digitpa.gov.it/Comune/H506" />
<vocab:view_tbeni_architettonici_loc_no></vocab:view_tbeni_architettonici_loc_no>
<vocab:view_tbeni_architettonici_imm_no>Eremo e Chiesa di S. Biagio</vocab:view_tbeni_architettonici_imm_no>
<vocab:view_tbeni_architettonici_via_no></vocab:view_tbeni_architettonici_via_no>
<vocab:view_tbeni_architettonici_immuso_no></vocab:view_tbeni_architettonici_immuso_no>
<vocab:view_tbeni_architettonici_immtpl_no>EREMO</vocab:view_tbeni_architettonici_immtpl_no>
<vocab:view_tbeni_architettonici_data_agg>10/04/2001</vocab:view_tbeni_architettonici_data_agg>
<vocab:view_tbeni_architettonici_tp_tutela>DICHIARATO DI INTERESSE CULTURALE AI SENSI DEL D.LGS. 22/01/2004 N. 42</vocab:view_tbeni_architettonici_tp_tutela>
<vocab:view_tbeni_architettonici_imm_cd>154.0001</vocab:view_tbeni_architettonici_imm_cd>
<vocab:view_tbeni_architettonici_prov_cd>22</vocab:view_tbeni_architettonici_prov_cd>
<vocab:view_tbeni_architettonici_cmp_cd>6</vocab:view_tbeni_architettonici_cmp_cd>
<vocab:view_tbeni_architettonici_com_cd>154</vocab:view_tbeni_architettonici_com_cd>
<vocab:view_tbeni_architettonici_fraz_cd>0</vocab:view_tbeni_architettonici_fraz_cd>
<vocab:view_tbeni_architettonici_immtpl_cd>68</vocab:view_tbeni_architettonici_immtpl_cd>
<vocab:view_tbeni_architettonici_immuso_cd>0</vocab:view_tbeni_architettonici_immuso_cd>
<vocab:view_tbeni_architettonici_imm_prt_cd>3</vocab:view_tbeni_architettonici_imm_prt_cd>
<vocab:view_tbeni_architettonici_prt>PRIVATA</vocab:view_tbeni_architettonici_prt>
<vocab:view_tbeni_architettonici_cd_tutela>1.00000000000</vocab:view_tbeni_architettonici_cd_tutela>
<vocab:view_tbeni_architettonici_categoria>Beni religiosi</vocab:view_tbeni_architettonici_categoria>
<vocab:view_tbeni_architettonici_selez>1</vocab:view_tbeni_architettonici_selez>
<vocab:view_tbeni_architettonici_label_2ad>T243</vocab:view_tbeni_architettonici_label_2ad>
<vocab:view_tbeni_architettonici_label>T244</vocab:view_tbeni_architettonici_label>
<vocab:view_tbeni_architettonici_glatitude>46.3921621030441</vocab:view_tbeni_architettonici_glatitude>
<vocab:view_tbeni_architettonici_glongitude>11.0775100584678</vocab:view_tbeni_architettonici_glongitude>
<rdf:type rdf:resource="vocab/view_tbeni_architettonici"/>
</rdf:Description>

</rdf:RDF>

特定の範囲内の緯度/経度座標を持つ行を抽出するにはどうすればよいですか? Java と Jena を使用して、次のスキーマコードに従ってクエリを作成します。

Model m = FileManager.get().loadModel( Config.OntoBasePath +  "test.rdf" );

String queryString =    
"PREFIX db: <http://www.datiopen.it/CatalogSparql/resource/>            " +
"PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#>                   " +
"PREFIX owl: <http://www.w3.org/2002/07/owl#>                           " +
"PREFIX map: <http://www.datiopen.it/CatalogSparql/resource/#>          " +
"PREFIX xsd: <http://www.w3.org/2001/XMLSchema#>                        " +
"PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>              " +
"PREFIX vocab: <http://www.datiopen.it/CatalogSparql/resource/vocab/>   " +
"select ?subject  ?lat  ?lon                                            " +
"where {                                                                " +
"?subject rdfs:label  ?label   .                                        " +
"?subject vocab:view_tbeni_architettonici_glatitude ?lat .              " +
"?subject vocab:view_tbeni_architettonici_glongitude ?lon .             " +
"FILTER( xsd:float(?lat)  - 46.39584550 <= 0.05 && 46.39584550   - xsd:float(?lat)  <= 0.05     " + 
"     && xsd:float(?long) - 11.12243239 <= 0.05 && 11.12243239 - xsd:float(?long) <= 0.05  )    " +
"}   " ;

Query query = QueryFactory.create(queryString);
// Execute the query and obtain results
QueryExecution qe = QueryExecutionFactory.create(query, m);
try {
    ResultSet results = qe.execSelect();
    while (results.hasNext()) {
        QuerySolution qs = results.nextSolution();
        Literal name = qs.getLiteral("x");
        System.out.println(name);
    }
} catch (Exception e){
    e.printStackTrace();
} finally {
    qe.close();
}

しかし、期待した結果を得ることができません。私は常に空の結果セットを取得します。誰かが正しいクエリを書くのを手伝ってくれますか?

score 1 · Accepted Answer

vocabプレフィックスは、データとクエリで同じであるように見えますが、そうではありません。データには、次のものがあります。

xmlns:vocab="http://www.datiopen.it/rdf/resource/vocab/"

しかし、あなたのクエリでは

PREFIX vocab: <http://www.datiopen.it/CatalogSparql/resource/vocab/>

実際には、このような接頭辞がいくつかあります。あなたのデータ (Turtle に変換されます)

@prefix db:      <http://www.datiopen.it/rdf/resource/> .
@prefix rdfs:    <http://www.w3.org/2000/01/rdf-schema#> .
@prefix owl:     <http://www.w3.org/2002/07/owl#> .
@prefix xsd:     <http://www.w3.org/2001/XMLSchema#> .
@prefix map:     <http://www.datiopen.it/rdf/resource/#> .
@prefix vocab:   <http://www.datiopen.it/rdf/resource/vocab/> .
@prefix rdf:     <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
@prefix dcterms:  <http://purl.org/dc/terms/> .

クエリには次のものがあります。

PREFIX db: <http://www.datiopen.it/CatalogSparql/resource/>             
PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#>                    
PREFIX owl: <http://www.w3.org/2002/07/owl#>                            
PREFIX xsd: <http://www.w3.org/2001/XMLSchema#>                         
PREFIX map: <http://www.datiopen.it/CatalogSparql/resource/#>           
PREFIX vocab: <http://www.datiopen.it/CatalogSparql/resource/vocab/>
PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>

接頭辞db、map、およびvocabが一致しないため、実際には、データの内容とはかなり異なるものを照会しています。

rdf - Java + Jena + Rdf : 正しい sparql クエリの作成に助けが必要

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