public void setFieldValue(_Fields field, @org.apache.thrift.annotation.Nullable java.lang.Object value) {
    switch (field) {
    case COLUMN_NAME:
      if (value == null) {
        unsetColumnName();
      } else {
        setColumnName((java.lang.String)value);
      }
      break;

    case TYPE_DESC:
      if (value == null) {
        unsetTypeDesc();
      } else {
        setTypeDesc((TTypeDesc)value);
      }
      break;

    case POSITION:
      if (value == null) {
        unsetPosition();
      } else {
        setPosition((java.lang.Integer)value);
      }
      break;

    case COMMENT:
      if (value == null) {
        unsetComment();
      } else {
        setComment((java.lang.String)value);
      }
      break;

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