public void setFieldValue(_Fields field, @org.apache.thrift.annotation.Nullable java.lang.Object value) {
    switch (field) {
    case OPERATION_HANDLE:
      if (value == null) {
        unsetOperationHandle();
      } else {
        setOperationHandle((TOperationHandle)value);
      }
      break;

    case ORIENTATION:
      if (value == null) {
        unsetOrientation();
      } else {
        setOrientation((TFetchOrientation)value);
      }
      break;

    case MAX_ROWS:
      if (value == null) {
        unsetMaxRows();
      } else {
        setMaxRows((java.lang.Long)value);
      }
      break;

    case FETCH_TYPE:
      if (value == null) {
        unsetFetchType();
      } else {
        setFetchType((java.lang.Short)value);
      }
      break;

    }
  }
Returns true if field fetchType is set (has been assigned a value) and false otherwise
service-rpc/src/gen/thrift/gen-javabean/org/apache/hive/service/rpc/thrift/TFetchResultsReq.java