org.eclipse.rdf4j.query.BooleanQuery.evaluate()方法的使用及代码示例

x33g5p2x  于2022-01-17 转载在 其他  
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本文整理了Java中org.eclipse.rdf4j.query.BooleanQuery.evaluate()方法的一些代码示例，展示了BooleanQuery.evaluate()的具体用法。这些代码示例主要来源于Github/Stackoverflow/Maven等平台，是从一些精选项目中提取出来的代码，具有较强的参考意义，能在一定程度帮忙到你。BooleanQuery.evaluate()方法的具体详情如下：
包路径：org.eclipse.rdf4j.query.BooleanQuery
类名称：BooleanQuery
方法名：evaluate

BooleanQuery.evaluate介绍

暂无

代码示例

代码示例来源：origin: org.eclipse.rdf4j/rdf4j-repository-dataset

public boolean evaluate()
    throws QueryEvaluationException
  {
    con.loadDataset(sailQuery.getActiveDataset());
    return ((BooleanQuery)sailQuery).evaluate();
  }
}

代码示例来源：origin: de.tudarmstadt.ukp.inception.rdf4j/rdf4j-repository-dataset

public boolean evaluate()
    throws QueryEvaluationException
  {
    con.loadDataset(sailQuery.getActiveDataset());
    return ((BooleanQuery)sailQuery).evaluate();
  }
}

代码示例来源：origin: org.eclipse.rdf4j/rdf4j-http-server-spring

/**
 * Evaluate a {@link BooleanQuery} in this transaction and return the result.
 * 
 * @param bQuery
 *        a {@link BooleanQuery} prepared on this transaction.
 * @return the query result as a boolean
 * @throws InterruptedException
 *         if the transaction thread is interrupted
 * @throws ExecutionException
 *         if an error occurs while executing the operation.
 */
boolean evaluate(BooleanQuery bQuery)
  throws InterruptedException, ExecutionException
{
  Future<Boolean> result = submit(() -> bQuery.evaluate());
  return getFromFuture(result);
}

代码示例来源：origin: org.eclipse.rdf4j/rdf4j-client

public boolean hasStatement(Resource subj, IRI pred, Value obj, boolean includeInferred,
    Resource... contexts)
  throws RepositoryException
{
  try {
    BooleanQuery query = prepareBooleanQuery(SPARQL, SOMETHING, "");
    setBindings(query, subj, pred, obj, contexts);
    return query.evaluate();
  }
  catch (MalformedQueryException e) {
    throw new RepositoryException(e);
  }
  catch (QueryEvaluationException e) {
    throw new RepositoryException(e);
  }
}

代码示例来源：origin: org.eclipse.rdf4j/rdf4j-repository-sparql

public boolean hasStatement(Resource subj, IRI pred, Value obj, boolean includeInferred,
    Resource... contexts)
  throws RepositoryException
{
  try {
    BooleanQuery query = prepareBooleanQuery(SPARQL, SOMETHING, "");
    setBindings(query, subj, pred, obj, contexts);
    return query.evaluate();
  }
  catch (MalformedQueryException e) {
    throw new RepositoryException(e);
  }
  catch (QueryEvaluationException e) {
    throw new RepositoryException(e);
  }
}

代码示例来源：origin: eclipse/rdf4j

@Override
public boolean hasStatement(Resource subj, IRI pred, Value obj, boolean includeInferred,
    Resource... contexts)
  throws RepositoryException
{
  try {
    BooleanQuery query = prepareBooleanQuery(SPARQL, SOMETHING, "");
    setBindings(query, subj, pred, obj, contexts);
    return query.evaluate();
  }
  catch (MalformedQueryException e) {
    throw new RepositoryException(e);
  }
  catch (QueryEvaluationException e) {
    throw new RepositoryException(e);
  }
}

代码示例来源：origin: org.eclipse.rdf4j/rdf4j-client

public boolean isEmpty()
  throws RepositoryException
{
  try {
    BooleanQuery query;
    if (isQuadMode()) {
      query = prepareBooleanQuery(SPARQL, SOMETHING_WITH_GRAPH);
    }
    else {
      query = prepareBooleanQuery(SPARQL, SOMETHING);
    }
    return !query.evaluate();
  }
  catch (MalformedQueryException e) {
    throw new RepositoryException(e);
  }
  catch (QueryEvaluationException e) {
    throw new RepositoryException(e);
  }
}

代码示例来源：origin: eclipse/rdf4j

@Override
public boolean isEmpty()
  throws RepositoryException
{
  try {
    BooleanQuery query;
    if (isQuadMode()) {
      query = prepareBooleanQuery(SPARQL, SOMETHING_WITH_GRAPH);
    }
    else {
      query = prepareBooleanQuery(SPARQL, SOMETHING);
    }
    return !query.evaluate();
  }
  catch (MalformedQueryException e) {
    throw new RepositoryException(e);
  }
  catch (QueryEvaluationException e) {
    throw new RepositoryException(e);
  }
}

代码示例来源：origin: org.eclipse.rdf4j/rdf4j-repository-sparql

public boolean isEmpty()
  throws RepositoryException
{
  try {
    BooleanQuery query;
    if (isQuadMode()) {
      query = prepareBooleanQuery(SPARQL, SOMETHING_WITH_GRAPH);
    }
    else {
      query = prepareBooleanQuery(SPARQL, SOMETHING);
    }
    return !query.evaluate();
  }
  catch (MalformedQueryException e) {
    throw new RepositoryException(e);
  }
  catch (QueryEvaluationException e) {
    throw new RepositoryException(e);
  }
}

代码示例来源：origin: org.eclipse.rdf4j/rdf4j-repository-sparql

/**
 * Evaluate the provided sparqlQueryString at the initialized {@link Repository} of this
 * {@link FederatedService}. Insert bindings, send ask query and return final result
 */
@Override
public boolean ask(Service service, BindingSet bindings, String baseUri)
  throws QueryEvaluationException
{
  try {
    String sparqlQueryString = service.getAskQueryString();
    BooleanQuery query = getConnection().prepareBooleanQuery(QueryLanguage.SPARQL, sparqlQueryString,
        baseUri);
    Iterator<Binding> bIter = bindings.iterator();
    while (bIter.hasNext()) {
      Binding b = bIter.next();
      if (service.getServiceVars().contains(b.getName()))
        query.setBinding(b.getName(), b.getValue());
    }
    return query.evaluate();
  }
  catch (MalformedQueryException e) {
    throw new QueryEvaluationException(e);
  }
  catch (RepositoryException e) {
    throw new QueryEvaluationException(
        "Repository for endpoint " + rep.toString() + " could not be initialized.", e);
  }
}

代码示例来源：origin: org.eclipse.rdf4j/rdf4j-client

/**
 * Evaluate the provided sparqlQueryString at the initialized {@link Repository} of this
 * {@link FederatedService}. Insert bindings, send ask query and return final result
 */
@Override
public boolean ask(Service service, BindingSet bindings, String baseUri)
  throws QueryEvaluationException
{
  try {
    String sparqlQueryString = service.getAskQueryString();
    BooleanQuery query = getConnection().prepareBooleanQuery(QueryLanguage.SPARQL, sparqlQueryString,
        baseUri);
    Iterator<Binding> bIter = bindings.iterator();
    while (bIter.hasNext()) {
      Binding b = bIter.next();
      if (service.getServiceVars().contains(b.getName()))
        query.setBinding(b.getName(), b.getValue());
    }
    return query.evaluate();
  }
  catch (MalformedQueryException e) {
    throw new QueryEvaluationException(e);
  }
  catch (RepositoryException e) {
    throw new QueryEvaluationException(
        "Repository for endpoint " + rep.toString() + " could not be initialized.", e);
  }
}

代码示例来源：origin: eclipse/rdf4j

/**
 * Evaluate the provided sparqlQueryString at the initialized {@link Repository} of this
 * {@link FederatedService}. Insert bindings, send ask query and return final result
 */
@Override
public boolean ask(Service service, BindingSet bindings, String baseUri)
  throws QueryEvaluationException
{
  try {
    String sparqlQueryString = service.getAskQueryString();
    BooleanQuery query = getConnection().prepareBooleanQuery(QueryLanguage.SPARQL, sparqlQueryString,
        baseUri);
    Iterator<Binding> bIter = bindings.iterator();
    while (bIter.hasNext()) {
      Binding b = bIter.next();
      if (service.getServiceVars().contains(b.getName()))
        query.setBinding(b.getName(), b.getValue());
    }
    return query.evaluate();
  }
  catch (MalformedQueryException e) {
    throw new QueryEvaluationException(e);
  }
  catch (RepositoryException e) {
    throw new QueryEvaluationException(
        "Repository for endpoint " + rep.toString() + " could not be initialized.", e);
  }
}

代码示例来源：origin: franzinc/agraph-java-client

@Test
public void testSimpleBooleanQuery()
    throws Exception {
  testCon.add(alice, name, nameAlice, context2);
  testCon.add(alice, mbox, mboxAlice, context2);
  testCon.add(context2, publisher, nameAlice);
  testCon.add(bob, name, nameBob, context1);
  testCon.add(bob, mbox, mboxBob, context1);
  testCon.add(context1, publisher, nameBob);
  StringBuilder queryBuilder = new StringBuilder();
  queryBuilder.append("PREFIX foaf: <" + FOAF_NS + "> ");
  queryBuilder.append("ASK ");
  queryBuilder.append("{ ?p foaf:name ?name }");
  boolean exists = testCon.prepareBooleanQuery(QueryLanguage.SPARQL, queryBuilder.toString()).evaluate();
  assertTrue(exists);
}

代码示例来源：origin: joshsh/sesametools

private Boolean executeAskQuery(final URI endpoint, final String query) {
  
  final SPARQLRepository repo = new SPARQLRepository(endpoint.toString());
  try {
    repo.initialize();
    try (RepositoryConnection con = repo.getConnection()) {
      return con.prepareBooleanQuery(QueryLanguage.SPARQL, query).evaluate();
    } catch (Exception e) {
      Assert.fail(e.getMessage());
    }
  } catch (Exception e) {
    Assert.fail(e.getMessage());
  } finally {
    repo.shutDown();
  }
  return null;
}

代码示例来源：origin: franzinc/agraph-java-client

@Test
public void testPreparedBooleanQuery()
    throws Exception {
  testCon.add(alice, name, nameAlice, context2);
  testCon.add(alice, mbox, mboxAlice, context2);
  testCon.add(context2, publisher, nameAlice);
  testCon.add(bob, name, nameBob, context1);
  testCon.add(bob, mbox, mboxBob, context1);
  testCon.add(context1, publisher, nameBob);
  StringBuilder queryBuilder = new StringBuilder();
  queryBuilder.append("PREFIX foaf: <" + FOAF_NS + "> ");
  queryBuilder.append("ASK ");
  queryBuilder.append("{ ?p foaf:name ?name }");
  BooleanQuery query = testCon.prepareBooleanQuery(QueryLanguage.SPARQL, queryBuilder.toString());
  query.setBinding("name", nameBob);
  assertTrue(query.evaluate());
}

代码示例来源：origin: de.tudarmstadt.ukp.inception.rdf4j/rdf4j-spin

BooleanQuery queryOp = qp.prepare(askQuery);
addBindings(queryOp, arguments, args);
Value result = BooleanLiteral.valueOf(queryOp.evaluate());
iter = new SingletonIteration<List<Value>, QueryEvaluationException>(
    Collections.singletonList(result));

代码示例来源：origin: ontop/ontop

boolean queryResult = ((BooleanQuery)query).evaluate();
boolean expectedResult = readExpectedBooleanQueryResult();
assertEquals(expectedResult, queryResult);

代码示例来源：origin: de.tudarmstadt.ukp.inception.rdf4j/rdf4j-spin

@Override
  public Value evaluate(ValueFactory valueFactory, Value... args)
    throws ValueExprEvaluationException
  {
    QueryPreparer qp = getCurrentQueryPreparer();
    if (args.length == 0 || !(args[0] instanceof Resource)) {
      throw new ValueExprEvaluationException("First argument must be a resource");
    }
    if ((args.length % 2) == 0) {
      throw new ValueExprEvaluationException("Old number of arguments required");
    }
    try {
      ParsedBooleanQuery askQuery = parser.parseAskQuery((Resource)args[0], qp.getTripleSource());
      BooleanQuery queryOp = qp.prepare(askQuery);
      addBindings(queryOp, args);
      return BooleanLiteral.valueOf(queryOp.evaluate());
    }
    catch (ValueExprEvaluationException e) {
      throw e;
    }
    catch (RDF4JException e) {
      throw new ValueExprEvaluationException(e);
    }
  }
}

代码示例来源：origin: de.tudarmstadt.ukp.inception.rdf4j/rdf4j-sail-spin

BooleanQuery queryOp = queryPreparer.prepare(askQuery);
addBindings(subj, constraint, askQuery, queryOp, tripleSource, parser);
if (queryOp.evaluate()) {
  violation = parser.parseConstraintViolation(constraint, tripleSource);

代码示例来源：origin: franzinc/agraph-java-client

@Test
@Category(TestSuites.Prepush.class)
public void updateViaBooleanQuery() throws Exception {
  IRI s = f.createIRI("http://example/book1");
  IRI p = f.createIRI("http://purl.org/dc/elements/1.1/title");
  Literal o_wrong = f.createLiteral("Fundamentals of Compiler Desing");
  Literal o_right = f.createLiteral("Fundamentals of Compiler Design");
  IRI g = f.createIRI("http://example/bookStore");
  con.add(s, p, o_wrong, g);
  // Perform a sequence of SPARQL UPDATE queries in one request to correct the title
  String queryString = "PREFIX dc: <http://purl.org/dc/elements/1.1/> \n"
      + "DELETE DATA { GRAPH <http://example/bookStore> { <http://example/book1>  dc:title  \"Fundamentals of Compiler Desing\" } } ; \n"
      + "\n"
      + "PREFIX dc: <http://purl.org/dc/elements/1.1/> \n"
      + "INSERT DATA { GRAPH <http://example/bookStore> { <http://example/book1>  dc:title  \"Fundamentals of Compiler Design\" } }";
  // SPARQL Update queries can also be executed using a BooleanQuery (for side effect)
  // Useful for older versions of Sesame that don't have a prepareUpdate method.
  con.prepareBooleanQuery(QueryLanguage.SPARQL, queryString).evaluate();
  Assert.assertTrue("Title should be correct", con.hasStatement(s, p, o_right, false, g));
  Assert.assertFalse("Incorrect title should be gone", con.hasStatement(s, p, o_wrong, false, g));
}

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