public boolean next() throws GenericDataSourceException {
  try {
    return _rs.next();
  }
 catch (  SQLException sqle) {
    throw new GenericDataSourceException("SQL Exception while executing the following:" + _sql,sqle);
  }
}

public boolean next ( ) throws GenericDataSourceException { try { return _rs . next ( ) ; } catch ( SQLException sqle ) { throw new GenericDataSourceException ( "SQL Exception while executing the following:" + _sql , sqle ) ; } }
test if there more records available
