Re: [Quickfix-developers] Just Starting...

[Patrick W. <pw...@ka...>]

Yes that is right.

When you call sendtoTarget the toApp callback should be called by the
fix engine to allow you to do some processing before the message is sent
(log it for example). Also you can throw a DoNotSend exception here to
stop the message from being sent. toApp will also be called when the
engine responds to a resend request.

I have only been using this for a few months - other people may have a
better insight into this.

Patrick

-----Original Message-----
From: qui...@li...
[mailto:qui...@li...] On Behalf Of
azmat
Sent: Friday, 18 January 2008 7:56 AM
To: qui...@li...
Subject: Re: [Quickfix-developers] Just Starting...

QuickFIX Documentation:
http://www.quickfixengine.org/quickfix/doc/html/index.html
QuickFIX Support: http://www.quickfixengine.org/services.html


Actually, I figured out the first part. =20

fromApp, call crack...crack distinguishes what type of message it is and
calls the appropiate OnMessage that is overridden from
MessageCracker...if
onMessage for the specific message type is NOT implemented, than an
UnsupportedMessageType  exception is thrown. =20

So in the onMessage (execution report) I would write the business
related
code for what I need to do for when/if an executionReport is a type of
message that is received, correct? =20

My confusion now lies with sending messages with sendToTarget and its
relation to toApp?  Should I call sendToTarget from toApp or will it
somehow
(again) magically end up in toApp? =20

thanks!
Azmat


Patrick,

Thanks! This is perfect.  I have something very similar now.  I
understand
that I should call the crack method in the fromApp method so that the
MessageCracker can identify exactly what type of message it is.  That is
really neat.  But, what I do not get is how or when is the onMessage
method
is called (the one that takes the ExecutionReport parameter)?  Is this
something that automagically happens with the crack method if it
determines
the message is of type ExecutionReport?

Also on the flipside of it.  If I call sendToTarget from my business
layer
will it automatically go to the Application.toApp method OR do I need to
somehow call toApp and then call sendToTarget from there?

Any help would be much, much appreciated!

thanks!
Azmat


--=20
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