public Expression toGravitino()

in catalogs/catalog-jdbc-mysql/src/main/java/org/apache/gravitino/catalog/mysql/converter/MysqlColumnDefaultValueConverter.java [38:103]
61 lines of code
25 McCabe index (conditional complexity)

  public Expression toGravitino(
      JdbcTypeConverter.JdbcTypeBean type,
      String columnDefaultValue,
      boolean isExpression,
      boolean nullable) {
    if (columnDefaultValue == null) {
      return nullable ? Literals.NULL : DEFAULT_VALUE_NOT_SET;
    }

    if (columnDefaultValue.equalsIgnoreCase(NULL)) {
      return Literals.NULL;
    }

    if (isExpression) {
      if (columnDefaultValue.equals(CURRENT_TIMESTAMP)) {
        return DEFAULT_VALUE_OF_CURRENT_TIMESTAMP;
      }
      // The parsing of MySQL expressions is complex, so we are not currently undertaking the
      // parsing.
      return UnparsedExpression.of(columnDefaultValue);
    }

    switch (type.getTypeName().toLowerCase()) {
      case MysqlTypeConverter.TINYINT:
        return Literals.byteLiteral(Byte.valueOf(columnDefaultValue));
      case MysqlTypeConverter.TINYINT_UNSIGNED:
        return Literals.unsignedByteLiteral(Short.valueOf(columnDefaultValue));
      case MysqlTypeConverter.SMALLINT:
        return Literals.shortLiteral(Short.valueOf(columnDefaultValue));
      case MysqlTypeConverter.SMALLINT_UNSIGNED:
        return Literals.unsignedShortLiteral(Integer.valueOf(columnDefaultValue));
      case MysqlTypeConverter.INT:
        return Literals.integerLiteral(Integer.valueOf(columnDefaultValue));
      case MysqlTypeConverter.INT_UNSIGNED:
        return Literals.unsignedIntegerLiteral(Long.valueOf(columnDefaultValue));
      case MysqlTypeConverter.BIGINT:
        return Literals.longLiteral(Long.valueOf(columnDefaultValue));
      case MysqlTypeConverter.BIGINT_UNSIGNED:
        return Literals.unsignedLongLiteral(Decimal.of(columnDefaultValue));
      case MysqlTypeConverter.FLOAT:
        return Literals.floatLiteral(Float.valueOf(columnDefaultValue));
      case MysqlTypeConverter.DOUBLE:
        return Literals.doubleLiteral(Double.valueOf(columnDefaultValue));
      case MysqlTypeConverter.DECIMAL:
        return Literals.decimalLiteral(
            Decimal.of(columnDefaultValue, type.getColumnSize(), type.getScale()));
      case JdbcTypeConverter.DATE:
        return Literals.dateLiteral(LocalDate.parse(columnDefaultValue, DATE_FORMATTER));
      case JdbcTypeConverter.TIME:
        return Literals.timeLiteral(LocalTime.parse(columnDefaultValue, DATE_TIME_FORMATTER));
      case JdbcTypeConverter.TIMESTAMP:
      case MysqlTypeConverter.DATETIME:
        return CURRENT_TIMESTAMP.equals(columnDefaultValue)
            ? DEFAULT_VALUE_OF_CURRENT_TIMESTAMP
            : Literals.timestampLiteral(
                LocalDateTime.parse(columnDefaultValue, DATE_TIME_FORMATTER));
      case JdbcTypeConverter.VARCHAR:
        return Literals.of(columnDefaultValue, Types.VarCharType.of(type.getColumnSize()));
      case MysqlTypeConverter.CHAR:
        return Literals.of(columnDefaultValue, Types.FixedCharType.of(type.getColumnSize()));
      case JdbcTypeConverter.TEXT:
        return Literals.stringLiteral(columnDefaultValue);
      default:
        return UnparsedExpression.of(columnDefaultValue);
    }
  }