public static String toDorisType()

in flink-doris-connector/src/main/java/org/apache/doris/flink/tools/cdc/mysql/MysqlType.java [99:217]
112 lines of code
73 McCabe index (conditional complexity)

    public static String toDorisType(String type, Integer length, Integer scale) {
        switch (type.toUpperCase()) {
            case BIT:
            case BOOLEAN:
            case BOOL:
                return DorisType.BOOLEAN;
            case TINYINT:
                return DorisType.TINYINT;
            case TINYINT_UNSIGNED:
            case TINYINT_UNSIGNED_ZEROFILL:
            case SMALLINT:
                return DorisType.SMALLINT;
            case SMALLINT_UNSIGNED:
            case SMALLINT_UNSIGNED_ZEROFILL:
            case INT:
            case INTEGER:
            case MEDIUMINT:
            case YEAR:
                return DorisType.INT;
            case INT_UNSIGNED:
            case INT_UNSIGNED_ZEROFILL:
            case INTEGER_UNSIGNED:
            case INTEGER_UNSIGNED_ZEROFILL:
            case MEDIUMINT_UNSIGNED:
            case MEDIUMINT_UNSIGNED_ZEROFILL:
            case BIGINT:
                return DorisType.BIGINT;
            case BIGINT_UNSIGNED:
            case BIGINT_UNSIGNED_ZEROFILL:
                return DorisType.LARGEINT;
            case FLOAT:
            case FLOAT_UNSIGNED:
            case FLOAT_UNSIGNED_ZEROFILL:
                return DorisType.FLOAT;
            case REAL:
            case REAL_UNSIGNED:
            case REAL_UNSIGNED_ZEROFILL:
            case DOUBLE:
            case DOUBLE_UNSIGNED:
            case DOUBLE_UNSIGNED_ZEROFILL:
            case DOUBLE_PRECISION:
            case DOUBLE_PRECISION_UNSIGNED:
            case DOUBLE_PRECISION_UNSIGNED_ZEROFILL:
                return DorisType.DOUBLE;
            case NUMERIC:
            case NUMERIC_UNSIGNED:
            case NUMERIC_UNSIGNED_ZEROFILL:
            case FIXED:
            case FIXED_UNSIGNED:
            case FIXED_UNSIGNED_ZEROFILL:
            case DECIMAL:
            case DECIMAL_UNSIGNED:
            case DECIMAL_UNSIGNED_ZEROFILL:
                return length != null && length <= 38
                        ? String.format(
                                "%s(%s,%s)",
                                DorisType.DECIMAL_V3,
                                length,
                                scale != null && scale >= 0 ? scale : 0)
                        : DorisType.STRING;
            case DATE:
                return DorisType.DATE_V2;
            case DATETIME:
            case TIMESTAMP:
                // default precision is 0
                // see https://dev.mysql.com/doc/refman/8.0/en/date-and-time-type-syntax.html
                if (length == null
                        || length <= 0
                        || length == ZERO_PRECISION_TIMESTAMP_COLUMN_SIZE) {
                    return String.format("%s(%s)", DorisType.DATETIME_V2, 0);
                } else if (length > ZERO_PRECISION_TIMESTAMP_COLUMN_SIZE + 1) {
                    // Timestamp with a fraction of seconds.
                    // For example, 2024-01-01 01:01:01.1
                    // The decimal point will occupy 1 character.
                    // Thus,the length of the timestamp is 21.
                    return String.format(
                            "%s(%s)",
                            DorisType.DATETIME_V2,
                            Math.min(
                                    length - ZERO_PRECISION_TIMESTAMP_COLUMN_SIZE - 1,
                                    MAX_SUPPORTED_DATE_TIME_PRECISION));
                } else if (length <= TimestampType.MAX_PRECISION) {
                    // For Debezium JSON data, the timestamp/datetime length ranges from 0 to 9.
                    return String.format(
                            "%s(%s)",
                            DorisType.DATETIME_V2,
                            Math.min(length, MAX_SUPPORTED_DATE_TIME_PRECISION));
                } else {
                    throw new UnsupportedOperationException(
                            "Unsupported length: "
                                    + length
                                    + " for MySQL TIMESTAMP/DATETIME types");
                }
            case CHAR:
            case VARCHAR:
                Preconditions.checkNotNull(length);
                return length * 3 > 65533
                        ? DorisType.STRING
                        : String.format("%s(%s)", DorisType.VARCHAR, length * 3);
            case TINYTEXT:
            case TEXT:
            case MEDIUMTEXT:
            case LONGTEXT:
            case ENUM:
            case TIME:
            case TINYBLOB:
            case BLOB:
            case MEDIUMBLOB:
            case LONGBLOB:
            case BINARY:
            case VARBINARY:
            case SET:
                return DorisType.STRING;
            case JSON:
                return DorisType.JSONB;
            default:
                throw new UnsupportedOperationException("Unsupported MySQL Type: " + type);
        }
    }