public boolean equals(TColumnDesc that) {
    if (that == null)
      return false;
    if (this == that)
      return true;

    boolean this_present_columnName = true && this.isSetColumnName();
    boolean that_present_columnName = true && that.isSetColumnName();
    if (this_present_columnName || that_present_columnName) {
      if (!(this_present_columnName && that_present_columnName))
        return false;
      if (!this.columnName.equals(that.columnName))
        return false;
    }

    boolean this_present_typeDesc = true && this.isSetTypeDesc();
    boolean that_present_typeDesc = true && that.isSetTypeDesc();
    if (this_present_typeDesc || that_present_typeDesc) {
      if (!(this_present_typeDesc && that_present_typeDesc))
        return false;
      if (!this.typeDesc.equals(that.typeDesc))
        return false;
    }

    boolean this_present_position = true;
    boolean that_present_position = true;
    if (this_present_position || that_present_position) {
      if (!(this_present_position && that_present_position))
        return false;
      if (this.position != that.position)
        return false;
    }

    boolean this_present_comment = true && this.isSetComment();
    boolean that_present_comment = true && that.isSetComment();
    if (this_present_comment || that_present_comment) {
      if (!(this_present_comment && that_present_comment))
        return false;
      if (!this.comment.equals(that.comment))
        return false;
    }

    return true;
  }
Returns true if field corresponding to fieldID 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