private Transfer readTransfer()

in protonj2/src/main/java/org/apache/qpid/protonj2/codec/decoders/transport/TransferTypeDecoder.java [171:244]
63 lines of code
19 McCabe index (conditional complexity)

    private Transfer readTransfer(InputStream stream, StreamDecoder decoder, StreamDecoderState state, ListTypeDecoder listDecoder) throws DecodeException {
        final Transfer transfer = new Transfer();

        @SuppressWarnings("unused")
        final int size = listDecoder.readSize(stream, state);
        final int count = listDecoder.readCount(stream, state);

        // Don't decode anything if things already look wrong.
        if (count < MIN_TRANSFER_LIST_ENTRIES) {
            throw new DecodeException("The handle field cannot be omitted");
        }

        if (count > MAX_TRANSFER_LIST_ENTRIES) {
            throw new DecodeException("To many entries in Transfer list encoding: " + count);
        }

        for (int index = 0; index < count; ++index) {
            // If the stream allows we peek ahead and see if there is a null in the next slot,
            // if so we don't call the setter for that entry to ensure the returned type reflects
            // the encoded state in the modification entry.
            if (stream.markSupported()) {
                stream.mark(1);
                final boolean nullValue = ProtonStreamUtils.readByte(stream) == EncodingCodes.NULL;
                if (nullValue) {
                    if (index == 0) {
                        throw new DecodeException("The handle field cannot be omitted from the Transfer");
                    }

                    continue;
                } else {
                    ProtonStreamUtils.reset(stream);
                }
            }

            switch (index) {
                case 0:
                    transfer.setHandle(decoder.readUnsignedInteger(stream, state, 0l));
                    break;
                case 1:
                    transfer.setDeliveryId(decoder.readUnsignedInteger(stream, state, 0l));
                    break;
                case 2:
                    transfer.setDeliveryTag(decoder.readDeliveryTag(stream, state));
                    break;
                case 3:
                    transfer.setMessageFormat(decoder.readUnsignedInteger(stream, state, 0l));
                    break;
                case 4:
                    transfer.setSettled(decoder.readBoolean(stream, state, false));
                    break;
                case 5:
                    transfer.setMore(decoder.readBoolean(stream, state, false));
                    break;
                case 6:
                    final UnsignedByte rcvSettleMode = decoder.readUnsignedByte(stream, state);
                    transfer.setRcvSettleMode(rcvSettleMode == null ? null : ReceiverSettleMode.values()[rcvSettleMode.intValue()]);
                    break;
                case 7:
                    transfer.setState(decoder.readObject(stream, state, DeliveryState.class));
                    break;
                case 8:
                    transfer.setResume(decoder.readBoolean(stream, state, false));
                    break;
                case 9:
                    transfer.setAborted(decoder.readBoolean(stream, state, false));
                    break;
                case 10:
                    transfer.setBatchable(decoder.readBoolean(stream, state, false));
                    break;
            }
        }

        return transfer;
    }