public static FieldWriter createFieldWriter()

in fluss-common/src/main/java/com/alibaba/fluss/row/indexed/IndexedRowWriter.java [267:343]
76 lines of code
19 McCabe index (conditional complexity)

    public static FieldWriter createFieldWriter(DataType fieldType) {
        final FieldWriter fieldWriter;
        switch (fieldType.getTypeRoot()) {
            case CHAR:
                final int charLength = getLength(fieldType);
                fieldWriter =
                        (writer, pos, value) -> writer.writeChar((BinaryString) value, charLength);
                break;
            case STRING:
                fieldWriter = (writer, pos, value) -> writer.writeString((BinaryString) value);
                break;
            case BOOLEAN:
                fieldWriter = (writer, pos, value) -> writer.writeBoolean((boolean) value);
                break;
            case BINARY:
                final int binaryLength = getLength(fieldType);
                fieldWriter =
                        (writer, pos, value) -> writer.writeBinary((byte[]) value, binaryLength);
                break;
            case BYTES:
                fieldWriter = (writer, pos, value) -> writer.writeBytes((byte[]) value);
                break;
            case DECIMAL:
                final int decimalPrecision = getPrecision(fieldType);
                fieldWriter =
                        (writer, pos, value) ->
                                writer.writeDecimal((Decimal) value, decimalPrecision);
                break;
            case TINYINT:
                fieldWriter = (writer, pos, value) -> writer.writeByte((byte) value);
                break;
            case SMALLINT:
                fieldWriter = (writer, pos, value) -> writer.writeShort((short) value);
                break;
            case INTEGER:
            case DATE:
            case TIME_WITHOUT_TIME_ZONE:
                fieldWriter = (writer, pos, value) -> writer.writeInt((int) value);
                break;
            case BIGINT:
                fieldWriter = (writer, pos, value) -> writer.writeLong((long) value);
                break;
            case FLOAT:
                fieldWriter = (writer, pos, value) -> writer.writeFloat((float) value);
                break;
            case DOUBLE:
                fieldWriter = (writer, pos, value) -> writer.writeDouble((double) value);
                break;
            case TIMESTAMP_WITHOUT_TIME_ZONE:
                final int timestampNtzPrecision = getPrecision(fieldType);
                fieldWriter =
                        (writer, pos, value) ->
                                writer.writeTimestampNtz(
                                        (TimestampNtz) value, timestampNtzPrecision);
                break;
            case TIMESTAMP_WITH_LOCAL_TIME_ZONE:
                final int timestampLtzPrecision = getPrecision(fieldType);
                fieldWriter =
                        (writer, pos, value) ->
                                writer.writeTimestampLtz(
                                        (TimestampLtz) value, timestampLtzPrecision);
                break;
            default:
                throw new IllegalArgumentException("Unsupported type for IndexedRow: " + fieldType);
        }

        if (!fieldType.isNullable()) {
            return fieldWriter;
        }
        return (writer, pos, value) -> {
            if (value == null) {
                writer.setNullAt(pos);
            } else {
                fieldWriter.writeField(writer, pos, value);
            }
        };
    }