@Override
      public void read(org.apache.thrift.protocol.TProtocol iprot, evaluate_args struct) throws org.apache.thrift.TException {
        org.apache.thrift.protocol.TField schemeField;
        iprot.readStructBegin();
        while (true)
        {
          schemeField = iprot.readFieldBegin();
          if (schemeField.type == org.apache.thrift.protocol.TType.STOP) { 
            break;
          }
          switch (schemeField.id) {
            case 1: // EXPRESSION
              if (schemeField.type == org.apache.thrift.protocol.TType.STRING) {
                struct.expression = iprot.readString();
                struct.setExpressionIsSet(true);
              } else { 
                org.apache.thrift.protocol.TProtocolUtil.skip(iprot, schemeField.type);
              }
              break;
            case 2: // DO_TRUNC
              if (schemeField.type == org.apache.thrift.protocol.TType.BOOL) {
                struct.doTrunc = iprot.readBool();
                struct.setDoTruncIsSet(true);
              } else { 
                org.apache.thrift.protocol.TProtocolUtil.skip(iprot, schemeField.type);
              }
              break;
            default:
              org.apache.thrift.protocol.TProtocolUtil.skip(iprot, schemeField.type);
          }
          iprot.readFieldEnd();
        }
        iprot.readStructEnd();

        // check for required fields of primitive type, which can't be checked in the validate method
        struct.validate();
      }
@Override
      public void read(org.apache.thrift.protocol.TProtocol iprot, evaluate_args struct)