Re: [Quickfix-developers] How to add support for custom messages and custom signature to QuickFix?

[Reiner N. <rei...@ma...>]

Hi,

> If you want to generate all the classes, you will need to run the
> generation scripts in the 'spec' directory.

Is there a file to register the used specs?
Or do I need to run the generation scripts manually instead of just rebuild 
the whole stuff?


> I don't believe there is a mehod for retrieving just the body fields.  In
> C++ this would be possible if you cast the Message to a FieldMap, but this
> isn't an option in java.  A getBody method would probably be a good
> compliment to getHeader and getTrailer.  What you can do however is iterate
> through all the fields and call toString on them one by one.  If you append
> each of the fields to a StringBuffer you should be able to reconstruct the
> body of the message.

Is there a method to check wether a field is a header, trailor or body field?

> Where you add the field is a function of what you know, when you know it,
> and how generally applicable it is.  In general, if you have a field that
> you want to make sure gets appended to every outgoing message, you should
> put it in the toApp method.  If you have a field that is specific to one
> type of message, it would make more sense to append it at the same place
> you construct that message.
Thanks. This sounds good.

Many thanks for the hints
Reiner Nix

> --oren
>
> ----- Original Message -----
> From: "Reiner Nix" <rei...@ma...>
> To: <qui...@li...>
> Sent: Wednesday, June 22, 2005 7:58 AM
> Subject: [Quickfix-developers] How to add support for custom messages and
> custom signature to QuickFix?
>
> > QuickFIX Documentation:
> > http://www.quickfixengine.org/quickfix/doc/html/index.html
> > QuickFIX FAQ: http://www.quickfixengine.org/wikifix/index.php?QuickFixFAQ
> > QuickFIX Support: http://www.quickfixengine.org/services.html
> >
> > Hi,
> >
> > I need to extend QuickFix to support custom messages. As a first step a
> > new an
> > additional data dictionary was created. Now QuickFix must be build again
> > to
> > generate the code according the additional data dictionary.
> > What is the correct way to build QuickFix to support this data
> > dictionary?
> >
> >
> > I also need to add a custom defined tag containing a digital signature to
> > a
> > FIX message. To do this, I need to retrieve the body in FIX notation of a
> > message where almost all fields are populated. After calculating the
> > signature the message must be extended with the custom field containing
> > the
> > signature and then the message can be sent.
> >
> > My questions:
> > How can I retrieve the message body in FIX notation? I do not need the
> > header
> > nor the trailer but only the body for the calculation.
> >
> > What is the best way to add the custom field?
> > Using Java, I guess the methods Application.toApp or before calling
> > Session.sendToTarget can be used. Is there a recommendation whether to
> > use toApp or before calling sendToTarget.
> >
> > Cheers
> > Reiner
> >
> >
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-- 
Reiner B. Nix		       IT-Architect
rei...@ma...	       http://www.macd.com
Tel.: +49 (0)241 44597-23      Macdonald Associates GmbH
Fax : +49 (0)241 44597-10      Lothringer Str. 52, D-52070 Aachen