static Integer getDecimalDigits()

in flight/flight-sql-jdbc-core/src/main/java/org/apache/arrow/driver/jdbc/ArrowDatabaseMetadata.java [1163:1201]

• 37 lines of code
• 14 McCabe index (conditional complexity)

  static Integer getDecimalDigits(final ArrowType fieldType) {
    // We aren't setting DECIMAL_DIGITS for Float/Double as their precision and scale are variable.
    if (fieldType instanceof ArrowType.Decimal) {
      final ArrowType.Decimal thisDecimal = (ArrowType.Decimal) fieldType;
      return thisDecimal.getScale();
    } else if (fieldType instanceof ArrowType.Int) {
      return NO_DECIMAL_DIGITS;
    } else if (fieldType instanceof ArrowType.Timestamp) {
      switch (((ArrowType.Timestamp) fieldType).getUnit()) {
        case SECOND:
          return NO_DECIMAL_DIGITS;
        case MILLISECOND:
          return DECIMAL_DIGITS_TIME_MILLISECONDS;
        case MICROSECOND:
          return DECIMAL_DIGITS_TIME_MICROSECONDS;
        case NANOSECOND:
          return DECIMAL_DIGITS_TIME_NANOSECONDS;
        default:
          break;
      }
    } else if (fieldType instanceof ArrowType.Time) {
      switch (((ArrowType.Time) fieldType).getUnit()) {
        case SECOND:
          return NO_DECIMAL_DIGITS;
        case MILLISECOND:
          return DECIMAL_DIGITS_TIME_MILLISECONDS;
        case MICROSECOND:
          return DECIMAL_DIGITS_TIME_MICROSECONDS;
        case NANOSECOND:
          return DECIMAL_DIGITS_TIME_NANOSECONDS;
        default:
          break;
      }
    } else if (fieldType instanceof ArrowType.Date) {
      return NO_DECIMAL_DIGITS;
    }

    return null;
  }