@Override
  public int compareTo(TableIdentifier other) {
    if (!getClass().equals(other.getClass())) {
      return getClass().getName().compareTo(other.getClass().getName());
    }

    int lastComparison = 0;

    lastComparison = Boolean.valueOf(isSetCatalog()).compareTo(other.isSetCatalog());
    if (lastComparison != 0) {
      return lastComparison;
    }
    if (isSetCatalog()) {
      lastComparison = org.apache.thrift.TBaseHelper.compareTo(this.catalog, other.catalog);
      if (lastComparison != 0) {
        return lastComparison;
      }
    }
    lastComparison = Boolean.valueOf(isSetDatabase()).compareTo(other.isSetDatabase());
    if (lastComparison != 0) {
      return lastComparison;
    }
    if (isSetDatabase()) {
      lastComparison = org.apache.thrift.TBaseHelper.compareTo(this.database, other.database);
      if (lastComparison != 0) {
        return lastComparison;
      }
    }
    lastComparison = Boolean.valueOf(isSetTableName()).compareTo(other.isSetTableName());
    if (lastComparison != 0) {
      return lastComparison;
    }
    if (isSetTableName()) {
      lastComparison = org.apache.thrift.TBaseHelper.compareTo(this.tableName, other.tableName);
      if (lastComparison != 0) {
        return lastComparison;
      }
    }
    return 0;
  }
Returns true if field corresponding to fieldID is set (has been assigned a value) and false otherwise
iceberg/iceberg-handler/src/main/java/org/apache/iceberg/mr/hive/compaction/evaluator/amoro/TableIdentifier.java