I do have a service for each CFC.
I have a BusinessDelegate for each as well with a method for each method on
the CFC.
Ex:
public class EmployeeDelegate
{
public function EmployeeDelegate( responder : Responder )
{
this.service = ServiceLocator.getInstance
().getRemoteObject("employeeService");
this.responder = responder;
}
public function readEmployeeByUsername(sUsername:String) : void
{
var call : Object = service.readEmployeeByUsername(sUsername);
call.resultHandler = responder.onResult;
call.faultHandler = responder.onFault;
}
private var responder : Responder;
private var service : Object;
}
On 12/6/06, Douglas McCarroll <[EMAIL PROTECTED]>
wrote:
If I understand correctly (newbie speaking) you'd have:
- A service specified on ServiceLocator for each of your CFCs
- A BusinessDelegate for each method that you'll be calling
Steve House wrote:
>
> Hank,
>
> Thanks for your reply. I am not sure I am explaining this correctly
> but let me try adding these details and see if this helps. My backend
> is ColdFusion and I have created Flex remote objects to several CFCs
> that each correspond to a separate business object (not necessarily
> one table). For example, I have an employeeGateway.cfc who's methods
> all pertain to employees (e.g. readEmployeeById(),
> readEmployeeByUsername(), addEmployeePermission()). From what I
> understand I have to set up a remote object connection to each CFC
> that I want to talk to. Although I could create a single CFC to group
> together lookup table queries I prefer to keep them in their distinct
> CFCs to allow for future methods related to those objects.
>
> Does this clear things up at all or am I still way off? Thanks again
> for your help!
>
> Steve
>
> On 12/5/06, *hank williams* < [EMAIL PROTECTED] <hank777%40gmail.com>
> <mailto:[EMAIL PROTECTED] <hank777%40gmail.com>>> wrote:
>
> Steve,
>
> You definitely shoud not have a business delegate for every lookup
> table. I dont really understand the detail of what you explained in
> your email, but communications between a client and a server should
> never be as granular as mapping just directly to a table. Think of
> communications with a server as asking high level questions like, "who
> are my top spending customers this month". This might require access
> to several tables. This calculation work should be done on the server
> and the results should then be delivered from the server to the
> client. The client should generally not be taking the results of
> several table searches and intersecting, joining, merging or anything
> of the sort. That is really server side work.
>
> Regards,
> Hank
>
>
>
> On 12/5/06, stevehousefl <[EMAIL PROTECTED] <cyberdust%40gmail.com>
> <mailto:cyberdust% <cyberdust%25>40gmail.com>> wrote:
> > 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 flexcoders@yahoogroups.com <flexcoders%40yahoogroups.com>
> <mailto:flexcoders% <flexcoders%25>40yahoogroups.com>, 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 <http://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 <http://www.CairngormDocs.org>
> > >
> > > Flex Developer
> > > http://www.brightworks.com <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
> > > >
> > > >
> > >
> >
> >
> >
> >
> > --
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