Asanka
So we have two options
[1] Fix the bug in QFJ side and use data dictionary to identify the
repeating groups. Accessing the DD for each FIX message will effect
our message processing time because I noticed that API calls for the
data dictionary is very slow.
Any possibility to use the DD once for each type of message and cache
results? We could ship a binary patch against QFJ until such time they
accept and include any fix you make into its code base
[2] Change the way Synapse do the FIX transformation to XML infoset .
- Current implementation access the qfj.Message and iterate through
the data structures provided by qfj and build the AXIOM tree. My
proposal is to use a simple way and it will cut down the 100+ code to
14 lines of code.
This is the code snippet
String fixToXML = message.toXML().replaceAll("\n","");
InputStream is = new
ByteArrayInputStream(fixToXML.getBytes());
XMLStreamReader parser =
XMLInputFactory.newInstance().createXMLStreamReader(is);
StAXOMBuilder builder = new StAXOMBuilder(parser);
OMElement documentElement = builder.getDocumentElement();
SOAPFactory soapFactory = new SOAP11Factory();
documentElement.addAttribute(soapFactory.createOMAttribute(FIXConstants.FIX_MESSAGE_INCOMING_SESSION,
null, sessionID));
System.out.println (documentElement.toString());
SOAPEnvelope envelope = soapFactory.getDefaultEnvelope();
envelope.getBody().addChild(documentElement);
msgCtx.setEnvelope(envelope);
This will basically create the AXIOM tree using the qfj.Message.toXML().
Few changes will apply for the current implementation
1. Will not have CDATA section in the xml infoset
2. Attribute "id" in the element "Field" will rename as "tag"
3. Will not check binary content (FIX is not made to send binary data,
and from my past experience with the FIX users none of them sent
binary with FIX , FAST is there for binary transports for financial
messaging)
I did apply this change to my local workspace and it is working
perfectly with the FIX scenarios we have and it supports ***repeating
groups*** as well.
WDYT ?
How large can a FIX message get? Can it contain binary? attachments etc?
This will let us determine if reading the message into a String is
appropriate. For example a JMS Text message can be read into a String,
as always its also loaded into memory.
asankha
--
Asankha C. Perera
WSO2 - http://wso2.org
http://esbmagic.blogspot.com
