How to use

getQueryEngine

method

in

org.apache.rya.accumulo.AccumuloRyaDAO

public RyaStatement findStatement(final RyaStatement ryaStatement) throws RyaDAOException {
  RyaStatement resultRyaStatement = null;
  CloseableIteration<RyaStatement, RyaDAOException> iter = null;
  try {
    iter = accumuloRyaDao.getQueryEngine().query(ryaStatement, accumuloRyaDao.getConf());
    if (iter.hasNext()) {
      resultRyaStatement = iter.next();
    }
  } finally {
    if (iter != null) {
      iter.close();
    }
  }
  return resultRyaStatement;
}

public RyaStatement findStatement(final RyaStatement ryaStatement) throws RyaDAOException {
  RyaStatement resultRyaStatement = null;
  CloseableIteration<RyaStatement, RyaDAOException> iter = null;
  try {
    iter = accumuloRyaDao.getQueryEngine().query(ryaStatement, accumuloRyaDao.getConf());
    if (iter.hasNext()) {
      resultRyaStatement = iter.next();
    }
  } finally {
    if (iter != null) {
      iter.close();
    }
  }
  return resultRyaStatement;
}

/**
 * Gets the metadata key from the table.
 * @param ryaStatement the {@link RyaStatement} for the metadata key to query.
 * @param dao the {@link AccumuloRyaDAO}.
 * @return the string value of the object from the metadata key.
 * @throws RyaDAOException
 */
private static String getMetadata(final RyaStatement ryaStatement, final AccumuloRyaDAO dao) throws RyaDAOException {
  String metadata = null;
  final AccumuloRdfConfiguration config = dao.getConf();
  final CloseableIteration<RyaStatement, RyaDAOException> iter = dao.getQueryEngine().query(ryaStatement, config);
  if (iter.hasNext()) {
    metadata = iter.next().getObject().getData();
  }
  iter.close();
  return metadata;
}