本文整理了Java中org.eclipse.rdf4j.repository.RepositoryConnection.hasStatement方法的一些代码示例，展示了RepositoryConnection.hasStatement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。RepositoryConnection.hasStatement方法的具体详情如下：
包路径：org.eclipse.rdf4j.repository.RepositoryConnection
类名称：RepositoryConnection
方法名：hasStatement

RepositoryConnection.hasStatement介绍

[英]Checks whether the repository contains statements with a specific subject, predicate and/or object, optionally in the specified contexts.
[中]检查存储库是否包含具有特定主语、谓语和/或宾语的语句（可选地在指定的上下文中）。

代码示例

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

@Override
public boolean mayHaveStatement(RepositoryConnection conn, Resource subj, IRI pred, Value obj,
    Resource... contexts)
{
  return conn.hasStatement(subj, pred, obj, includeInferred, contexts);
}

代码示例来源：origin: eclipse/rdf4j

@Override
public boolean mayHaveStatement(RepositoryConnection conn, Resource subj, IRI pred, Value obj,
    Resource... contexts)
{
  return conn.hasStatement(subj, pred, obj, includeInferred, contexts);
}

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

private boolean isRepositoryConfigContext(RepositoryConnection con, Resource context)
  throws RepositoryException
{
  logger.debug("Is {} a repository config context?", context);
  return con.hasStatement(context, RDF.TYPE, REPOSITORY_CONTEXT, true, (Resource)null);
}

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

@Override
public boolean requiresEvaluation(Repository addedStatements, Repository removedStatements) {
  boolean requiresEvalutation;
  try (RepositoryConnection addedStatementsConnection = addedStatements.getConnection()) {
    requiresEvalutation = addedStatementsConnection.hasStatement(null, path, null, false);
  }
  try (RepositoryConnection removedStatementsConnection = removedStatements.getConnection()) {
    requiresEvalutation |= removedStatementsConnection.hasStatement(null, path, null, false);
  }
  return requiresEvalutation;
}

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

@Override
public boolean requiresEvaluation(Repository addedStatements, Repository removedStatements) {
  boolean requiresEvalutation;
  try (RepositoryConnection addedStatementsConnection = addedStatements.getConnection()) {
    requiresEvalutation = addedStatementsConnection.hasStatement(null, path, null, false);
  }
  try (RepositoryConnection removedStatementsConnection = removedStatements.getConnection()) {
    requiresEvalutation |= removedStatementsConnection.hasStatement(null, path, null, false);
  }
  return requiresEvalutation;
}

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

@Override
public boolean requiresEvaluation(Repository addedStatements, Repository removedStatements) {
  boolean requiresEvalutation;
  try (RepositoryConnection addedStatementsConnection = addedStatements.getConnection()) {
    requiresEvalutation = addedStatementsConnection.hasStatement(null, RDF.TYPE, targetClass, false);
  }
  return super.requiresEvaluation(addedStatements, removedStatements) || requiresEvalutation;
}

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

@Override
public boolean requiresEvaluation(Repository addedStatements, Repository removedStatements) {
  boolean requiresEvalutation;
  try (RepositoryConnection addedStatementsConnection = addedStatements.getConnection()) {
    requiresEvalutation = addedStatementsConnection.hasStatement(null, RDF.TYPE, targetClass, false);
  }
  return super.requiresEvaluation(addedStatements, removedStatements) || requiresEvalutation;
}

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

@Override
public boolean hasStatement(Resource subj, IRI pred, Value obj, boolean includeInferred,
    Resource... contexts)
  throws RepositoryException
{
  if (isDelegatingRead()) {
    return getDelegate().hasStatement(subj, pred, obj, includeInferred, contexts);
  }
  return super.hasStatement(subj, pred, obj, includeInferred, contexts);
}

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
{
  if (isDelegatingRead()) {
    return getDelegate().hasStatement(subj, pred, obj, includeInferred, contexts);
  }
  return super.hasStatement(subj, pred, obj, includeInferred, contexts);
}

代码示例来源：origin: eclipse/rdf4j

@Override
public boolean hasStatement(Statement st, boolean includeInferred, Resource... contexts)
  throws RepositoryException
{
  if (isDelegatingRead()) {
    return getDelegate().hasStatement(st, includeInferred, contexts);
  }
  return super.hasStatement(st, includeInferred, contexts);
}

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

@Override
public boolean hasStatement(Statement st, boolean includeInferred, Resource... contexts)
  throws RepositoryException
{
  if (isDelegatingRead()) {
    return getDelegate().hasStatement(st, includeInferred, contexts);
  }
  return super.hasStatement(st, includeInferred, contexts);
}

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

@Test
public void testDropNamed()
    throws Exception {
  logger.debug("executing testDropNamed");
  String update = "DROP NAMED";
  Update operation = con.prepareUpdate(QueryLanguage.SPARQL, update);
  operation.execute();
  assertFalse(con.hasStatement(null, null, null, false, graph1));
  assertFalse(con.hasStatement(null, null, null, false, graph2));
  assertTrue(con.hasStatement(null, null, null, false));
}

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

@Test
public void testClearNamed()
    throws Exception {
  logger.debug("executing testClearNamed");
  String update = "CLEAR NAMED";
  Update operation = con.prepareUpdate(QueryLanguage.SPARQL, update);
  operation.execute();
  assertFalse(con.hasStatement(null, null, null, false, graph1));
  assertFalse(con.hasStatement(null, null, null, false, graph2));
  assertTrue(con.hasStatement(null, null, null, false));
}

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

@Test
public void testInsertEmptyWhere()
    throws Exception {
  logger.debug("executing test testInsertEmptyWhere");
  StringBuilder update = new StringBuilder();
  update.append(getNamespaceDeclarations());
  update.append("INSERT { <" + bob + "> rdfs:label \"Bob\" . } WHERE { }");
  Update operation = con.prepareUpdate(QueryLanguage.SPARQL, update.toString());
  assertFalse(con.hasStatement(bob, RDFS.LABEL, f.createLiteral("Bob"), true));
  operation.execute();
  assertTrue(con.hasStatement(bob, RDFS.LABEL, f.createLiteral("Bob"), true));
}

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

@Test
public void testHasStatementWithoutBNodes() throws Exception {
  testCon.add(name, name, nameBob);
  assertTrue("Repository should contain newly added statement", testCon
      .hasStatement(name, name, nameBob, false));
}

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

@Test
public void testAddGzipInputStreamNTriples() throws Exception {
  // add file default-graph.nt.gz to repository, no context
  File nt = Util.resourceAsTempFile(TEST_DIR_PREFIX + "default-graph.nt");
  addInputFile(createTempGzipFileFrom(nt), RDFFormat.NTRIPLES);
  assertTrue("Repository should contain newly added statements", testCon
      .hasStatement(null, publisher, nameBob, false));
  assertTrue("Repository should contain newly added statements", testCon
      .hasStatement(null, publisher, nameAlice, false));
}

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

@Test
public void testHasStatementWithBNodes() throws Exception {
  testCon.add(bob, name, nameBob);
  assertTrue("Repository should contain newly added statement", testCon
      .hasStatement(bob, name, nameBob, false));
}

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

@Test
public void testDropAll()
    throws Exception {
  logger.debug("executing testDropAll");
  String update = "DROP ALL";
  Update operation = con.prepareUpdate(QueryLanguage.SPARQL, update);
  operation.execute();
  assertFalse(con.hasStatement(null, null, null, false));
}

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

@Test
public void testRollback()
    throws Exception {
  testCon.setAutoCommit(false);
  testCon.add(alice, name, nameAlice);
  assertTrue("Uncommitted updates should be visible to own connection", testCon.hasStatement(alice, name,
      nameAlice, false));
  testCon.rollback();
  assertFalse("Repository should not contain statement after rollback", testCon.hasStatement(alice, name,
      nameAlice, false));
  testCon.setAutoCommit(true);
}

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

@Test
public void testSubClassInference()
    throws Exception {
  testCon.setAutoCommit(false);
  testCon.add(woman, RDFS.SUBCLASSOF, person);
  testCon.add(man, RDFS.SUBCLASSOF, person);
  testCon.add(alice, RDF.TYPE, woman);
  testCon.setAutoCommit(true);
  assertTrue(testCon.hasStatement(alice, RDF.TYPE, person, true));
}