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What he means is that store each result in local variables and create a
separate method in the CFC for returning each one.
<CFSET getReturnedData=objCFC.myFunction("getdataset1")>
<CFSET getReturnedData=objCFC.myFunction("getdataset2")>
Russ
-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Gary F
Sent: 29 December 2005 14:18
To: Coldfusion Development
Subject: Re: [CF-Dev] The THIS scope in CFCs
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As I'm unfamiliar with OOP principles I don't feel bad if I ignore them. :-)
So long as using This doesn't expose any mechanical issues such as memory or
security problems then I'll probably stick with This. The CFC won't be
persistant or in any session/app scopes.
Simon, I'm interested in what you mean by setting them in the variables
scope and return them using separate getter methods? Does that mean
variables.myvar in a CFC is exposed to the parent page? I suspect you mean
something else.
Thanks,
Gary.
On 12/29/05, Simon Baynes <[EMAIL PROTECTED]> wrote:
>
> >- see footer for list info -<
> Using the this scope is not bad practise it is just very loose, ie it
> does not check data types etc.. That is why many people (including
> myself) use it very rarely. Another reason is that this data is
> intrinsically attached to the object you create whereas you can set
> the result of a function call equal to a function call and then you
> can use it for whatever you like.
>
> So in summary there is nothing wrong with the this scope just that it
> goes against the grain of many OOP principles.
>
> For your above problem I would suggest returning a structure, or set
> then in the variables scope within the object and return them using
> separate getter methods.
>
> I hope that clears some of it up for you.
>
> Regards,
>
> Simon Baynes
>
> On 12/29/05, Gary F <[EMAIL PROTECTED]> wrote:
> > >- see footer for list info -<
> > I posted a similar message on Ray Camden's Ask a Jedi blog but it
> created
> > more questions than answers. I need to return at least 2 complex
> > objects
> > (queries) from a CFC. The CFRETURN function only lets you return a
> single
> > object/variable so I started using the THIS scope.
> >
> > Example: from within the CFC
> > <CFSET this.myquery=myquery>
> >
> > Now myquery is exposed to the parent page so I can grab it like so:
> >
> > <!--- use createobject to initiate the cfc ---> <CFSET
> > objCFC=CreateObject("component","myCFC")>
> > <!--- collect a varible that CFReturn would usually return from a
> > cfc
> --->
> > <CFSET getReturnedData=objCFC.myFunction("optional arguments go
> > here")>
> > <!--- get the var/object that was explosed using the This scope --->
> > <CFSET myquery=objCFC.myquery>
> >
> > I found this is the quickest and most effecient way to return
> > multiple vars/objects from CFCs without storing them in arrays or
> > structures
> which
> > seems like a waste of code when This works with total simplicity.
> Someone
> > told me using the This scope is bad practice but failed to give a
> reason. I
> > honestly don't see what's wrong with this, but I'd like to hear the
> thoughts
> > of experienced CFC users? (I've only been using CFCs for a few months).
> >
> > Thanks,
> > Gary.
> > _______________________________________________
> >
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>
> --
> Simon Baynes
> www.simonbaynes.com
> _______________________________________________
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