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Java TupleQuery類代碼示例

本文整理匯總了Java中org.openrdf.query.TupleQuery類的典型用法代碼示例。如果您正苦於以下問題：Java TupleQuery類的具體用法？Java TupleQuery怎麽用？Java TupleQuery使用的例子？那麽, 這裏精選的類代碼示例或許可以為您提供幫助。


TupleQuery類屬於org.openrdf.query包，在下文中一共展示了TupleQuery類的15個代碼示例，這些例子默認根據受歡迎程度排序。您可以為喜歡或者感覺有用的代碼點讚，您的評價將有助於係統推薦出更棒的Java代碼示例。

示例1: before

import org.openrdf.query.TupleQuery; //導入依賴的package包/類
@Before
public void before()
		throws RepositoryException, IOException, RDFParseException,
		       MalformedQueryException, QueryResultParseException,
			   QueryResultHandlerException {
	repo = new SailRepository(new MemoryStore());
	repo.initialize();
	conn = repo.getConnection();
	vf = conn.getValueFactory();
	conn.add(getResource(data), "file://", RDFFormat.TURTLE);
	SPARQLResultsXMLParserFactory factory =
			new SPARQLResultsXMLParserFactory();
	parser = factory.getParser();
	parser.setValueFactory(vf);
	List<Rule> rules;
	rules = Rules.fromOntology(getResource(data));
	QueryRewriter rewriter = new QueryRewriter(conn, rules);
	query = (TupleQuery) rewriter.rewrite(QueryLanguage.SPARQL, queryString);
	nonInfQuery = conn.prepareTupleQuery(QueryLanguage.SPARQL, queryString);
	System.out.println("== QUERY (" + this.name + ") ==");
	System.out.println(nonInfQuery);
	System.out.println("== REWRITTEN QUERY (" + this.name + ") ==");
	System.out.println(query);
}
開發者ID:lszeremeta，項目名稱:neo4j-sparql-extension-yars，代碼行數:25，代碼來源:SPARQLInferenceTest.java

示例2: getDistinctObj

import org.openrdf.query.TupleQuery; //導入依賴的package包/類
/**
 * Get total number of distinct objects for a predicate
 * @param pred Predicate
 * @param m model
 * @return triples
 */
public static long getDistinctObj(String pred, String endpoint) throws Exception {
	String strQuery = "SELECT  (COUNT(DISTINCT ?o) AS ?objs) " + // 
			"WHERE " +
			"{" +
       		"?s <" + pred + "> ?o " +
       		"} " ;
	SPARQLRepository repo = new SPARQLRepository(endpoint);
	repo.initialize();
	RepositoryConnection conn = repo.getConnection();
	try {
		TupleQuery query = conn.prepareTupleQuery(QueryLanguage.SPARQL, strQuery); 
		TupleQueryResult rs = query.evaluate();
		return Long.parseLong(rs.next().getValue("objs").stringValue());
	} finally {
		conn.close();
		repo.shutDown();
	}
}
開發者ID:dice-group，項目名稱:CostFed，代碼行數:25，代碼來源:SemagrowSummariesGenerator.java

示例3: getDistinctSbj

import org.openrdf.query.TupleQuery; //導入依賴的package包/類
/**
 * Get total number of distinct objects for a predicate
 * @param pred Predicate
 * @param m model
 * @return triples
 */
public static long getDistinctSbj(String pred, String endpoint) throws Exception {
	String strQuery = "SELECT  (COUNT(DISTINCT ?s) AS ?subjs) " + // 
			"WHERE " +
			"{" +
       		"?s <" + pred + "> ?o " +
       		"} " ;
	SPARQLRepository repo = new SPARQLRepository(endpoint);
	repo.initialize();
	RepositoryConnection conn = repo.getConnection();
	try {
		TupleQuery query = conn.prepareTupleQuery(QueryLanguage.SPARQL, strQuery); 
		TupleQueryResult rs = query.evaluate();
		return Long.parseLong(rs.next().getValue("subjs").stringValue());
	} finally {
		conn.close();
		repo.shutDown();
	}
}
開發者ID:dice-group，項目名稱:CostFed，代碼行數:25，代碼來源:SemagrowSummariesGenerator.java

示例4: getSubjectCount

import org.openrdf.query.TupleQuery; //導入依賴的package包/類
/**
 * Get total number of distinct subjects of a dataset
 * @return count 
 */
public static long getSubjectCount(String endpoint) throws Exception {
	String strQuery = "SELECT  (COUNT(DISTINCT ?s) AS ?sbjts) " + // 
			"WHERE " +
			"{" +
       		"?s ?p ?o " +
       		"} " ;
	SPARQLRepository repo = new SPARQLRepository(endpoint);
	repo.initialize();
	RepositoryConnection conn = repo.getConnection();
	try {
		TupleQuery query = conn.prepareTupleQuery(QueryLanguage.SPARQL, strQuery); 
		TupleQueryResult rs = query.evaluate();
		return Long.parseLong(rs.next().getValue("sbjts").stringValue());
	} finally {
		conn.close();
		repo.shutDown();
	}
}
開發者ID:dice-group，項目名稱:CostFed，代碼行數:23，代碼來源:SemagrowSummariesGenerator.java

示例5: getObjectCount

import org.openrdf.query.TupleQuery; //導入依賴的package包/類
/**
 * Get total number of distinct objects of a dataset
 * @return count
 */
public static long getObjectCount(String endpoint) throws Exception {
	String strQuery = "SELECT  (COUNT(DISTINCT ?o) AS ?objts) " + // 
			"WHERE " +
			"{" +
       		"?s ?p ?o " +
       		"} " ;
	SPARQLRepository repo = new SPARQLRepository(endpoint);
	repo.initialize();
	RepositoryConnection conn = repo.getConnection();
	try {
		TupleQuery query = conn.prepareTupleQuery(QueryLanguage.SPARQL, strQuery); 
		TupleQueryResult rs = query.evaluate();
		return Long.parseLong(rs.next().getValue("objts").stringValue());
	} finally {
		conn.close();
		repo.shutDown();
	}
}
開發者ID:dice-group，項目名稱:CostFed，代碼行數:23，代碼來源:SemagrowSummariesGenerator.java

示例6: getTripleCount

import org.openrdf.query.TupleQuery; //導入依賴的package包/類
/**
 * Get total number of triple for a predicate
 * @param pred Predicate
 * @param m model
 * @return triples
 */
public static Long getTripleCount(String pred, String endpoint) throws Exception {
	String strQuery = "SELECT  (COUNT(?s) AS ?triples) " + // 
			"WHERE " +
			"{" +
       		"?s <"+pred+"> ?o " +
       		"} " ;
	SPARQLRepository repo = new SPARQLRepository(endpoint);
	repo.initialize();
	RepositoryConnection conn = repo.getConnection();
	try {
		TupleQuery query = conn.prepareTupleQuery(QueryLanguage.SPARQL, strQuery); 
		TupleQueryResult rs = query.evaluate();
		return Long.parseLong(rs.next().getValue("triples").stringValue());
	} finally {
		conn.close();
		repo.shutDown();
	}
}
開發者ID:dice-group，項目名稱:CostFed，代碼行數:25，代碼來源:SemagrowSummariesGenerator.java

示例7: getPredicates

import org.openrdf.query.TupleQuery; //導入依賴的package包/類
/**
 * Get Predicate List
 * @param endPointUrl SPARQL endPoint Url
 * @param graph Named graph
 * @return  predLst Predicates List
 */
private static List<String> getPredicates(String endPointUrl, String graph) throws Exception
{
	List<String>  predLst = new ArrayList<String>();
	String strQuery = getPredQuery(graph);
	SPARQLRepository repo = new SPARQLRepository(endPointUrl);
	repo.initialize();
	RepositoryConnection conn = repo.getConnection();
	try {
		TupleQuery query = conn.prepareTupleQuery(QueryLanguage.SPARQL, strQuery); 
		TupleQueryResult res = query.evaluate();
		while (res.hasNext()) 
		{
			String pred = res.next().getValue("p").toString();
			predLst.add(pred);	  		
		}
	} finally {
		conn.close();
		repo.shutDown();
	}
	return predLst;
}
開發者ID:dice-group，項目名稱:CostFed，代碼行數:28，代碼來源:SemagrowSummariesGenerator.java

示例8: runSPARQL

import org.openrdf.query.TupleQuery; //導入依賴的package包/類
/**
 * Execute a SELECT SPARQL query against the graph
 * 
 * @param qs
 *            SELECT SPARQL query
 * @return list of solutions, each containing a hashmap of bindings
 */
public List runSPARQL(String qs) {
	try {
		RepositoryConnection con = therepository.getConnection();
		try {
			TupleQuery query = con.prepareTupleQuery(org.openrdf.query.QueryLanguage.SPARQL, qs);
			TupleQueryResult qres = query.evaluate();
			ArrayList reslist = new ArrayList();
			while (qres.hasNext()) {
				BindingSet b = qres.next();
				Set names = b.getBindingNames();
				HashMap hm = new HashMap();
				for (Object n : names) {
					hm.put((String) n, b.getValue((String) n));
				}
				reslist.add(hm);
			}
			return reslist;
		} finally {
			con.close();
		}
	} catch (Exception e) {
		e.printStackTrace();
	}
	return null;
}
開發者ID:dvcama，項目名稱:resource-to-sparqlresult，代碼行數:33，代碼來源:SimpleGraph.java

示例9: doTupleQuery

import org.openrdf.query.TupleQuery; //導入依賴的package包/類
public static List<HashMap<String, Value>> doTupleQuery(RepositoryConnection con, String query) {

		List<HashMap<String, Value>> results = new ArrayList<HashMap<String, Value>>();
		try {
			TupleQuery resultsTable = con.prepareTupleQuery(QueryLanguage.SPARQL, query);
			TupleQueryResult bindings = resultsTable.evaluate();
			for (@SuppressWarnings("unused")
			int row = 0; bindings.hasNext(); row++) {
				HashMap<String, Value> riga = new HashMap<String, Value>();
				BindingSet pairs = bindings.next();
				List<String> names = bindings.getBindingNames();
				for (int i = 0; i < names.size(); i++) {
					String name = names.get(i);
					Value value = pairs.getValue(name);
					
					riga.put(name, value != null && value.stringValue().equals("") ? null : value);
				}
				results.add(riga);
			}
 		} catch (Exception e) {
			e.printStackTrace();
		}
		return results;
	}
開發者ID:regestaexe，項目名稱:bygle-ldp，代碼行數:25，代碼來源:QueryRDF.java

示例10: init

import org.openrdf.query.TupleQuery; //導入依賴的package包/類
private void init(RepositoryConnection conn, String queryName) throws IOException, OpenRDFException {
	trails = new ArrayList<>();
	File queryFile = NanolyticsUtils.getProvViewFile(queryName);
	varNames = new ArrayList<>();
	String queryString = NanolyticsUtils.getQuery(queryFile, varNames);
	varNames = ImmutableList.copyOf(varNames);
	TupleQuery query = conn.prepareTupleQuery(QueryLanguage.SPARQL, queryString);
	TupleQueryResult result = query.evaluate();
	while (result.hasNext()) {
		BindingSet bs = result.next();
		List<URI> uris = new ArrayList<>();
		for (String n : varNames) {
			if (bs.hasBinding(n)) {
				Value v = bs.getBinding(n).getValue();
				if (!(v instanceof URI)) {
					throw new RuntimeException("Not a URI: " + v);
				}
				uris.add((URI) v);
			} else {
				uris.add(null);
			}
		}
		trails.add(new ProvTrail(uris));
	}
	trails = ImmutableList.copyOf(trails);
}
開發者ID:tkuhn，項目名稱:nanolytics，代碼行數:27，代碼來源:ProvNetwork.java

示例11: init

import org.openrdf.query.TupleQuery; //導入依賴的package包/類
private void init(RepositoryConnection conn, String queryName) throws IOException, OpenRDFException {
	metrics = new HashMap<String,Object>();
	File queryFile = NanolyticsUtils.getProvMetricFile(queryName);
	varNames = new ArrayList<>();
	String queryString = NanolyticsUtils.getQuery(queryFile, varNames);
	varNames = ImmutableList.copyOf(varNames);
	TupleQuery query = conn.prepareTupleQuery(QueryLanguage.SPARQL, queryString);
	TupleQueryResult result = query.evaluate();
	if (!result.hasNext()) {
		throw new RuntimeException("Metric calculation failed");
	}
	BindingSet bs = result.next();
	if (result.hasNext()) {
		throw new RuntimeException("Metric calculation led to multiple results");
	}
	for (String n : varNames) {
		if (bs.hasBinding(n)) {
			metrics.put(n, bs.getBinding(n).getValue());
		}
	}
}
開發者ID:tkuhn，項目名稱:nanolytics，代碼行數:22，代碼來源:ProvMetric.java

示例12: testWithoutSubquery

import org.openrdf.query.TupleQuery; //導入依賴的package包/類
/**
 * This test works. The expected result is 6 rows ranging from "Model1Class 1" through "Model1Class 6".
 *
 * @throws RepositoryException
 * @throws QueryEvaluationException
 * @throws TupleQueryResultHandlerException
 *
 * @throws MalformedQueryException
 */
public void testWithoutSubquery() throws RepositoryException, QueryEvaluationException, TupleQueryResultHandlerException, MalformedQueryException {
    final String query = "SELECT ?i ?i_label ?i_class ?i_v1"
            + "WHERE {"
            + "?i <http://www.w3.org/2000/01/rdf-schema#label> ?i_label ."
            + "?i a ?i_class ."
            + "?i_class <http://www.w3.org/2000/01/rdf-schema#subClassOf>* <http://dragon-research.com/cham/model/model1#Model1Class> ."
            + "OPTIONAL { ?i <http://dragon-research.com/cham/model/model1#name> ?i_v1 } ."
            + "}"
            + "ORDER BY ?i_label";

    final RepositoryConnection conn = repository.getConnection();
    final TupleQuery tupleQuery = conn.prepareTupleQuery(QueryLanguage.SPARQL, query);
    RdfCloudTripleStoreConnectionTest.CountTupleHandler countTupleHandler = new RdfCloudTripleStoreConnectionTest.CountTupleHandler();
    tupleQuery.evaluate(countTupleHandler);
    assertEquals(6, countTupleHandler.getCount());
    conn.close();
}
開發者ID:apache，項目名稱:incubator-rya，代碼行數:27，代碼來源:ArbitraryLengthQueryTest.java

示例13: testEvaluate

import org.openrdf.query.TupleQuery; //導入依賴的package包/類
public void testEvaluate() throws Exception {
    RepositoryConnection conn = repository.getConnection();
    URI loadPerc = vf.createURI(litdupsNS, "loadPerc");
    URI uri1 = vf.createURI(litdupsNS, "uri1");
    conn.add(cpu, loadPerc, uri1);
    conn.commit();

    String query = "select * where {" +
            "?x <" + loadPerc.stringValue() + "> ?o1." +
            "}";
    TupleQuery tupleQuery = conn.prepareTupleQuery(QueryLanguage.SPARQL, query);
    CountTupleHandler cth = new CountTupleHandler();
    tupleQuery.evaluate(cth);
    assertEquals(cth.getCount(), 1);
    conn.close();
}
開發者ID:apache，項目名稱:incubator-rya，代碼行數:17，代碼來源:RdfCloudTripleStoreConnectionTest.java

示例14: testPOObjRange

import org.openrdf.query.TupleQuery; //導入依賴的package包/類
public void testPOObjRange() throws Exception {
    RepositoryConnection conn = repository.getConnection();
    URI loadPerc = vf.createURI(litdupsNS, "loadPerc");
    Literal six = vf.createLiteral("6");
    Literal sev = vf.createLiteral("7");
    Literal ten = vf.createLiteral("10");
    conn.add(cpu, loadPerc, six);
    conn.add(cpu, loadPerc, sev);
    conn.add(cpu, loadPerc, ten);
    conn.commit();

    String query = "PREFIX org.apache: <" + NAMESPACE + ">\n" +
            "select * where {" +
            "?x <" + loadPerc.stringValue() + "> ?o.\n" +
            "FILTER(org.apache:range(?o, '6', '8'))." +
            "}";
    TupleQuery tupleQuery = conn.prepareTupleQuery(QueryLanguage.SPARQL, query);
    CountTupleHandler cth = new CountTupleHandler();
    tupleQuery.evaluate(cth);
    conn.close();
    assertEquals(2, cth.getCount());
}
開發者ID:apache，項目名稱:incubator-rya，代碼行數:23，代碼來源:RdfCloudTripleStoreConnectionTest.java

示例15: testPOPredRange

import org.openrdf.query.TupleQuery; //導入依賴的package包/類
public void testPOPredRange() throws Exception {
    RepositoryConnection conn = repository.getConnection();
    URI loadPerc = vf.createURI(litdupsNS, "loadPerc1");
    URI loadPerc2 = vf.createURI(litdupsNS, "loadPerc2");
    URI loadPerc3 = vf.createURI(litdupsNS, "loadPerc3");
    URI loadPerc4 = vf.createURI(litdupsNS, "loadPerc4");
    Literal six = vf.createLiteral("6");
    Literal sev = vf.createLiteral("7");
    Literal ten = vf.createLiteral("10");
    conn.add(cpu, loadPerc, six);
    conn.add(cpu, loadPerc2, sev);
    conn.add(cpu, loadPerc4, ten);
    conn.commit();

    String query = "PREFIX org.apache: <" + NAMESPACE + ">\n" +
            "select * where {" +
            "?x ?p ?o.\n" +
            "FILTER(org.apache:range(?p, <" + loadPerc.stringValue() + ">, <" + loadPerc3.stringValue() + ">))." +
            "}";
    TupleQuery tupleQuery = conn.prepareTupleQuery(QueryLanguage.SPARQL, query);
    CountTupleHandler cth = new CountTupleHandler();
    tupleQuery.evaluate(cth);
    conn.close();
    assertEquals(cth.getCount(), 2);
}
開發者ID:apache，項目名稱:incubator-rya，代碼行數:26，代碼來源:RdfCloudTripleStoreConnectionTest.java


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