private Open readOpen()

in protonj2/src/main/java/org/apache/qpid/protonj2/codec/decoders/transport/OpenTypeDecoder.java [163:231]
59 lines of code
17 McCabe index (conditional complexity)

    private Open readOpen(InputStream stream, StreamDecoder decoder, StreamDecoderState state, ListTypeDecoder listDecoder) throws DecodeException {
        final Open open = new Open();

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

        if (count < MIN_OPEN_LIST_ENTRIES) {
            throw new DecodeException("The container-id field cannot be omitted from the Open");
        }

        if (count > MAX_OPEN_LIST_ENTRIES) {
            throw new DecodeException("To many entries in Open 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 container-id field cannot be omitted from the Open");
                    }

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

            switch (index) {
                case 0:
                    open.setContainerId(decoder.readString(stream, state));
                    break;
                case 1:
                    open.setHostname(decoder.readString(stream, state));
                    break;
                case 2:
                    open.setMaxFrameSize(decoder.readUnsignedInteger(stream, state, 0l));
                    break;
                case 3:
                    open.setChannelMax(decoder.readUnsignedShort(stream, state, 0));
                    break;
                case 4:
                    open.setIdleTimeout(decoder.readUnsignedInteger(stream, state, 0l));
                    break;
                case 5:
                    open.setOutgoingLocales(decoder.readMultiple(stream, state, Symbol.class));
                    break;
                case 6:
                    open.setIncomingLocales(decoder.readMultiple(stream, state, Symbol.class));
                    break;
                case 7:
                    open.setOfferedCapabilities(decoder.readMultiple(stream, state, Symbol.class));
                    break;
                case 8:
                    open.setDesiredCapabilities(decoder.readMultiple(stream, state, Symbol.class));
                    break;
                case 9:
                    open.setProperties(decoder.readMap(stream, state));
                    break;
            }
        }

        return open;
    }