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

      oprot.writeStructBegin(STRUCT_DESC);
      if (struct.username != null) {
        oprot.writeFieldBegin(USERNAME_FIELD_DESC);
        oprot.writeString(struct.username);
        oprot.writeFieldEnd();
      }
      if (struct.password != null) {
        oprot.writeFieldBegin(PASSWORD_FIELD_DESC);
        oprot.writeString(struct.password);
        oprot.writeFieldEnd();
      }
      oprot.writeFieldStop();
      oprot.writeStructEnd();
    }
    public void read(org.apache.thrift.protocol.TProtocol iprot, Credentials 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: // USERNAME
            if (schemeField.type == org.apache.thrift.protocol.TType.STRING) {
              struct.username = iprot.readString();
              struct.setUsernameIsSet(true);
            } else {
              org.apache.thrift.protocol.TProtocolUtil.skip(iprot, schemeField.type);
            }
            break;
          case 2: // PASSWORD
            if (schemeField.type == org.apache.thrift.protocol.TType.STRING) {
              struct.password = iprot.readString();
              struct.setPasswordIsSet(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();
    }