private ActiveMQMessage createMessage()

in activemq-amqp/src/main/java/org/apache/activemq/transport/amqp/message/JMSMappingInboundTransformer.java [90:179]
77 lines of code
22 McCabe index (conditional complexity)

    private ActiveMQMessage createMessage(Message message, EncodedMessage original) throws Exception {

        Section body = message.getBody();
        ActiveMQMessage result;

        if (body == null) {
            if (isContentType(SERIALIZED_JAVA_OBJECT_CONTENT_TYPE, message)) {
                result = new ActiveMQObjectMessage();
            } else if (isContentType(OCTET_STREAM_CONTENT_TYPE, message) || isContentType(null, message)) {
                result = new ActiveMQBytesMessage();
            } else {
                Charset charset = getCharsetForTextualContent(message.getContentType());
                if (charset != null) {
                    result = new ActiveMQTextMessage();
                } else {
                    result = new ActiveMQMessage();
                }
            }

            result.setShortProperty(JMS_AMQP_ORIGINAL_ENCODING, AMQP_NULL);
        } else if (body instanceof Data) {
            Binary payload = ((Data) body).getValue();

            if (isContentType(SERIALIZED_JAVA_OBJECT_CONTENT_TYPE, message)) {
                result = createObjectMessage(payload.getArray(), payload.getArrayOffset(), payload.getLength());
            } else if (isContentType(OCTET_STREAM_CONTENT_TYPE, message)) {
                result = createBytesMessage(payload.getArray(), payload.getArrayOffset(), payload.getLength());
            } else {
                Charset charset = getCharsetForTextualContent(message.getContentType());
                if (StandardCharsets.UTF_8.equals(charset)) {
                    ByteBuffer buf = ByteBuffer.wrap(payload.getArray(), payload.getArrayOffset(), payload.getLength());

                    try {
                        CharBuffer chars = charset.newDecoder().decode(buf);
                        result = createTextMessage(String.valueOf(chars));
                    } catch (CharacterCodingException e) {
                        result = createBytesMessage(payload.getArray(), payload.getArrayOffset(), payload.getLength());
                    }
                } else {
                    result = createBytesMessage(payload.getArray(), payload.getArrayOffset(), payload.getLength());
                }
            }

            result.setShortProperty(JMS_AMQP_ORIGINAL_ENCODING, AMQP_DATA);
        } else if (body instanceof AmqpSequence) {
            AmqpSequence sequence = (AmqpSequence) body;
            ActiveMQStreamMessage m = new ActiveMQStreamMessage();
            for (Object item : sequence.getValue()) {
                m.writeObject(item);
            }

            result = m;
            result.setShortProperty(JMS_AMQP_ORIGINAL_ENCODING, AMQP_SEQUENCE);
        } else if (body instanceof AmqpValue) {
            Object value = ((AmqpValue) body).getValue();
            if (value == null || value instanceof String) {
                result = createTextMessage((String) value);

                result.setShortProperty(JMS_AMQP_ORIGINAL_ENCODING, value == null ? AMQP_VALUE_NULL : AMQP_VALUE_STRING);
            } else if (value instanceof Binary) {
                Binary payload = (Binary) value;

                if (isContentType(SERIALIZED_JAVA_OBJECT_CONTENT_TYPE, message)) {
                    result = createObjectMessage(payload.getArray(), payload.getArrayOffset(), payload.getLength());
                } else {
                    result = createBytesMessage(payload.getArray(), payload.getArrayOffset(), payload.getLength());
                }

                result.setShortProperty(JMS_AMQP_ORIGINAL_ENCODING, AMQP_VALUE_BINARY);
            } else if (value instanceof List) {
                ActiveMQStreamMessage m = new ActiveMQStreamMessage();
                for (Object item : (List<Object>) value) {
                    m.writeObject(item);
                }
                result = m;
                result.setShortProperty(JMS_AMQP_ORIGINAL_ENCODING, AMQP_VALUE_LIST);
            } else if (value instanceof Map) {
                result = createMapMessage((Map<String, Object>) value);
                result.setShortProperty(JMS_AMQP_ORIGINAL_ENCODING, AMQP_VALUE_MAP);
            } else {
                // Trigger fall-back to native encoder which generates BytesMessage with the
                // original message stored in the message body.
                throw new AmqpProtocolException("Unable to encode to ActiveMQ JMS Message", false);
            }
        } else {
            throw new RuntimeException("Unexpected body type: " + body.getClass());
        }

        return result;
    }