Douglas (and all),
Since they are not dependent on each other, I went with just having a
single command fire 6 new events. I will look into the MacroCommand
though.
As far as the 6 different datasources, it is not. Perhaps this is
incorrect, but I have a business delegate for each lookup table and a
service (remote object) for each Coldfusion component that I am
talking to.
For example:
My EVENT_LOAD_CONTROL_PANEL executes the LoadControlPanelDataCommand
The LoadControlPanelDataCommand fires the EVENT_READ_ALL_QUEUES (and 5
other events)
The EVENT_READ_ALL_QUEUES executes the ReadAllQueuesCommand
The ReadAllQueuesCommand creates a QueueDelegate and executes
QueueDelegate.readAllQueues()
The QueueDelegate creates an instance of the ServiceLocator and
executes .getRemoteObject("queueService")
The queueService is configures in Services.mxml as
<mx:RemoteObject
id="queueService"
destination="ColdFusion"
source="CF.queueHandler"
showBusyCursor="true"
result="event.token.resultHandler( event );"
fault="event.token.faultHandler( event );"/>
Does this make sense????
Thanks,
Steve
--- In [email protected], Douglas McCarroll
<[EMAIL PROTECTED]> wrote:
>
> Hi Steve,
>
> I'm going to take a stab at this as I've been studying the Command
> pattern (as defined in GoF) and Cairngorm lately. In fact I'll be
> presenting on the subject here in Boston tomorrow evening, so this is
> right up my alley. (www.bfpug.us) :-)
>
> > how do you handle 6 different results since there is only 1
> > onResult function.
>
> I think that the answer here is "you don't". :-)
>
> Cairngorm has a SequenceCommand which has:
>
> public var nextEvent : CairngormEvent;
>
> You can then call its executeNextCommand() from your result() method
> which launches that event.
>
> This will work well enough if you need results from command_1 before
you
> make the service call in command_2, which you need before command_3,
etc.
>
> On the other hand, if that's not the case, what to do?
>
> The Gang Of Four chapter on the Command pattern describes a
MacroCommand
> that executes a number of (Simple)Commands. As described it seems to
> simply fire them off, one after another. Wouldn't be hard to roll your
> own, extending ICommand, with an array property, and passing in Command
> objects.
>
> I could even see creating an MacroEvent class that kept track of
whether
> its Commands had finished and that then did something when all were
> finished.
>
> Other Cairngorm programmers, wiser than I, will probably ask you wise
> questions about why you wish to pull data from six different data
> sources... :-)
>
>
> Douglas
>
>
> -------------------------------------------------
>
> Douglas McCarroll
>
> CairngormDocs.org Webmaster
> http://www.CairngormDocs.org
>
> Flex Developer
> http://www.brightworks.com
> 617.459.3840
>
> -------------------------------------------------
>
>
>
>
>
>
> stevehousefl wrote:
> >
> > I have a command that I would like to have pull lookup data from 6
> > different BusinessDelegates. Should that one command call all 6
> > delegates or should it fire 6 new events that call 6 new commands?
> >
> > If the one command should call all 6 delegates in its execute
> > function, how do you handle 6 different results since there is only 1
> > onResult function.
> >
> > I am using Cairngorm 2.1.
> >
> > Thanks in advance,
> >
> > Steve
> >
> >
>
