@Override
      public void write(org.apache.thrift.protocol.TProtocol oprot, evaluate_args struct) throws org.apache.thrift.TException {
        struct.validate();

        oprot.writeStructBegin(STRUCT_DESC);
        if (struct.expression != null) {
          oprot.writeFieldBegin(EXPRESSION_FIELD_DESC);
          oprot.writeString(struct.expression);
          oprot.writeFieldEnd();
        }
        oprot.writeFieldBegin(DO_TRUNC_FIELD_DESC);
        oprot.writeBool(struct.doTrunc);
        oprot.writeFieldEnd();
        oprot.writeFieldStop();
        oprot.writeStructEnd();
      }
@Override
      public void write(org.apache.thrift.protocol.TProtocol oprot, evaluate_args struct)