protected JdbcSerializationConverter createExternalConverter()

in flink-connector-jdbc-core/src/main/java/org/apache/flink/connector/jdbc/core/database/dialect/AbstractDialectConverter.java [209:268]
59 lines of code
24 McCabe index (conditional complexity)

    protected JdbcSerializationConverter createExternalConverter(LogicalType type) {
        switch (type.getTypeRoot()) {
            case BOOLEAN:
                return (val, index, statement) ->
                        statement.setBoolean(index, val.getBoolean(index));
            case TINYINT:
                return (val, index, statement) -> statement.setByte(index, val.getByte(index));
            case SMALLINT:
                return (val, index, statement) -> statement.setShort(index, val.getShort(index));
            case INTEGER:
            case INTERVAL_YEAR_MONTH:
                return (val, index, statement) -> statement.setInt(index, val.getInt(index));
            case BIGINT:
            case INTERVAL_DAY_TIME:
                return (val, index, statement) -> statement.setLong(index, val.getLong(index));
            case FLOAT:
                return (val, index, statement) -> statement.setFloat(index, val.getFloat(index));
            case DOUBLE:
                return (val, index, statement) -> statement.setDouble(index, val.getDouble(index));
            case CHAR:
            case VARCHAR:
                // value is BinaryString
                return (val, index, statement) ->
                        statement.setString(index, val.getString(index).toString());
            case BINARY:
            case VARBINARY:
                return (val, index, statement) -> statement.setBytes(index, val.getBinary(index));
            case DATE:
                return (val, index, statement) ->
                        statement.setDate(
                                index, Date.valueOf(LocalDate.ofEpochDay(val.getInt(index))));
            case TIME_WITHOUT_TIME_ZONE:
                return (val, index, statement) ->
                        statement.setTime(
                                index,
                                Time.valueOf(
                                        LocalTime.ofNanoOfDay(val.getInt(index) * 1_000_000L)));
            case TIMESTAMP_WITH_TIME_ZONE:
            case TIMESTAMP_WITHOUT_TIME_ZONE:
                final int timestampPrecision = ((TimestampType) type).getPrecision();
                return (val, index, statement) ->
                        statement.setTimestamp(
                                index, val.getTimestamp(index, timestampPrecision).toTimestamp());
            case DECIMAL:
                final int decimalPrecision = ((DecimalType) type).getPrecision();
                final int decimalScale = ((DecimalType) type).getScale();
                return (val, index, statement) ->
                        statement.setBigDecimal(
                                index,
                                val.getDecimal(index, decimalPrecision, decimalScale)
                                        .toBigDecimal());
            case ARRAY:
            case MAP:
            case MULTISET:
            case ROW:
            case RAW:
            default:
                throw new UnsupportedOperationException("Unsupported type:" + type);
        }
    }