RE: [Quickfix-developers] Casting from "Message" to "org.quickfix .fix42.QuoteRequest"

[Alexandre H. <a....@ca...>]

Hello,

Many thanks for the ideas.=20

What I have done is to create my own message factory, which uses the
"DefaultMessageFactory".
My "create" method (see code below) takes as parameters :=20
- the begin string ("FIX.4.2"),=20
- the message type ("D")=20
- and the full FIX String:
"8=3DFIX.4.2=019=3D136=0135=3DD=0134=3D16=0149=3DLeTrader02=0152=3D20030=
402-08:09:11=0156=3DLeBroker02
=0111=3DTrader_OrderID_1=0121=3D1=0138=3D1280=0140=3D1=0154=3D1=0155=3Dt=
f1=0159=3D0=0160=3D20030402-08:09:11
=0110=3D104=01"

The message I get can then be cast into =
(org.quickfix.fix42.NewOrderSingle).
The only problem is that the "create" method doesn't handle Quote =
Requests
(because of repeating groups).

Is there a "setString" method that takes a full FIX String and returns =
an
object of class "org.quickfix.Message" that
can be cast to "org.quickfix.fix42.QuoteRequest" for example ?

Alternately, I think I should write a second "create" method that =
handles
repeating groups.

Thanks,

Alexandre


******
	public Message create(String beginString, String msgType,String str)
{
=09
		Message message =3D new Message() ;
		try {	=09
			MessageFactory messageFactory =3D new
DefaultMessageFactory();
			message =3D messageFactory.create(beginString,
msgType);
		=09
			StringTokenizer st =3D new StringTokenizer(str, "\1");
			while(st.hasMoreTokens()) {
				String tag=3Dst.nextToken();
				StringTokenizer st2 =3D new
StringTokenizer(tag, "=3D");=20
				int tagID =3D
Integer.parseInt(st2.nextToken());
				String tagValue =3D st2.nextToken();
			=09
				if ((tagID !=3D35) && (tagID !=3D8) && (tagID
!=3D10) && (tagID !=3D9)) {
					message.setString(tagID,tagValue);
				}
			}
		}		=09
		catch(Exception e ) {
				e.printStackTrace();
		}
		return message;=09
	}=09
******


-----Message d'origine-----
De : OM...@th... [mailto:OM...@th...]
Envoy=E9 : mercredi 2 avril 2003 01:49
=C0 : Alexandre Hoang
Cc : Olivier Bonheur; 'qui...@li...';
qui...@li...
Objet : Re: [Quickfix-developers] Casting from "Message" to
"org.quickfix.fix42.QuoteRequest"



There is a couple of ways to do this, depending on how much type safety =
you
want.  If you want to conitinue using the base Message class, you just =
need
to start using the non-type safe getField method instead of get.  If =
you
want to be able to get a class that represents the message type, you =
can
use the DefaultMessageFactory class to create the derived message =
class.
You need to pass in a valid beginstring and a msgtype.

To do this it might be worthwhile to put the values of just those two
fields in separate columns in your database.  Then you can pull them =
out,
pass them into the factory, and call setString using your stored =
string.
Then you will be able to cast the resulting message to the appropriate
type.

--oren
--------------------------------------------------------


=20
>-----------------------------------------------------------------------=
----
-------------------|
  |
|
  |       To:       "'qui...@li...'"
|
  |        <qui...@li...>
|
  |       cc:       Olivier Bonheur <o.b...@ca...>
|
  |       Subject:  [Quickfix-developers] Casting from "Message" to
|
  |        "org.quickfix.fix42.QuoteRequest"
|
=20
>-----------------------------------------------------------------------=
----
-------------------|

Hello,

I archive the FIX messages I receive through QuickFIX in an SQL Server
database.
Basically, if I receive a quote request, encapsulated in an object of =
class
"QuoteRequest", I do:
"aQuoteRequest.toString()"  and I put the string in the database.

Now I want to retrieve from my database the quote request. So I first =
use a
query to get the string I have just stored.
Then a can create a Message:         Message aMessage =3D new
Message(stringRetrievedFromDB);

But then, I cannot do the following:
             Symbol aSymbol =3D new Symbol();
             aMessage.get(aSymbol);        // does not work !
I actually need to cast to the "Message" to
"org.quickfix.fix42.QuoteRequest".
But this is not possible: I get a class cast exception.

Is there a way to do this casting ?

Or is there a better way to archive messages ? I have thought of =
archiving
the tags one by one, but doing with makes it more difficult to =
reconstruct
an object of class "Message".

Thanks for any idea,

Alexandre
--------------------------------------------------------















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