Hi Sammi,
 
Normal you don't need that sort of logic, but in this case it seems like you 
do. So your logic below seems correct, I guess you will have a global property 
that will define which service to use and then each delegate will take care of 
doing the apppropriate calls. So you can move along with your idea, it should 
work out just fine.
 
Dimitrios Gianninas
Development Team Lead
Optimal Payments Inc.
 

________________________________

From: flexcoders@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of Sammi
Sent: Monday, September 17, 2007 8:06 AM
To: flexcoders@yahoogroups.com
Subject: [flexcoders] DelegateFactory



Hi,

Am am creating a Cairngorm app that needs to support the API of a number of 
similar online webservices.  All the webservices supply the same functionality 
- just in a slightly different way.

My idea is this.  Use the FactoryPattern for the Delegates.  So when a Command 
needs a delegate it calls the Factory and the factory supplies the command with 
a delegate.

So the command needs a LoginDelegate.  It gets a LoginDelegateForWebServiceA(), 
because the user has previously configured the app to use web service A.

I am just so new to actually applying design patterns.  I have read many 
articles and books (Head first Java books are GREAT!) so I understand the 
concept.  I just haven't used it much so I am not sure if my idea is any good.

Is this the way to go?  Can you point me at any good articles on how to  
support multiple "backends"?

Best,

Sammi

 

-- 
WARNING
-------
This electronic message and its attachments may contain confidential, 
proprietary or legally privileged information, which is solely for the use of 
the intended recipient.  No privilege or other rights are waived by any 
unintended transmission or unauthorized retransmission of this message.  If you 
are not the intended recipient of this message, or if you have received it in 
error, you should immediately stop reading this message and delete it and all 
attachments from your system.  The reading, distribution, copying or other use 
of this message or its attachments by unintended recipients is unauthorized and 
may be unlawful.  If you have received this e-mail in error, please notify the 
sender.

AVIS IMPORTANT
--------------
Ce message électronique et ses pièces jointes peuvent contenir des 
renseignements confidentiels, exclusifs ou légalement privilégiés destinés au 
seul usage du destinataire visé.  L'expéditeur original ne renonce à aucun 
privilège ou à aucun autre droit si le présent message a été transmis 
involontairement ou s'il est retransmis sans son autorisation.  Si vous n'êtes 
pas le destinataire visé du présent message ou si vous l'avez reçu par erreur, 
veuillez cesser immédiatement de le lire et le supprimer, ainsi que toutes ses 
pièces jointes, de votre système.  La lecture, la distribution, la copie ou 
tout autre usage du présent message ou de ses pièces jointes par des personnes 
autres que le destinataire visé ne sont pas autorisés et pourraient être 
illégaux.  Si vous avez reçu ce courrier électronique par erreur, veuillez en 
aviser l'expéditeur.

Reply via email to