Hmm, something else to consider. You can pass the name of a UDF to a UDF
and then call it dynamically...
function alpha() { return "a"; }
function beta() { return "b"; }
function main(f) {
return f();
}
writeOutput(main("alpha"));
There is an example of a sort UDF on cflib.org that works like this.
Would this help?
=======================================================================
Raymond Camden, ColdFusion Jedi Master for Mindseye, Inc
Email : [EMAIL PROTECTED]
WWW : www.camdenfamily.com/morpheus
Yahoo IM : morpheus
"My ally is the Force, and a powerful ally it is." - Yoda
> -----Original Message-----
> From: D. Delcomminette [mailto:[EMAIL PROTECTED]]
> Sent: Wednesday, February 05, 2003 9:38 PM
> To: CF-Talk
> Subject: RE: WDDX and UDF
>
>
> Your suggestion is good as soon as the set of function is
> pre-defined and well known, which is not the case. The object
> I am talking about is part of a completely dynamic
> development framework and must be able to handle other set of
> functions without changing the code.
>
> Dominique
>
>
> -----Original Message-----
> From: Raymond Camden [mailto:[EMAIL PROTECTED]]
> Sent: Wednesday, February 05, 2003 7:36 PM
> To: CF-Talk
> Subject: RE: WDDX and UDF
>
> Why store the udf as a preference? I'd just store a string,
> ie, pageA.display="thumbnail" or pageA.display="Summary",
> then you could do:
>
> <cfif pageA.display is "thumbnail">
> <cfoutput>#displayThunbnail(.... etc
>
> Or even easier. Write a UDF called displayContent. It takes
> as an arg what style to display and the data to show. So you could do:
>
> displayContent("thunbmail",artistnail)
>
> ==============================================================
> =========
> Raymond Camden, ColdFusion Jedi Master for Mindseye, Inc
>
> Email : [EMAIL PROTECTED]
> WWW : www.camdenfamily.com/morpheus
> Yahoo IM : morpheus
>
> "My ally is the Force, and a powerful ally it is." - Yoda
>
> > -----Original Message-----
> > From: DDE [mailto:[EMAIL PROTECTED]]
> > Sent: Wednesday, February 05, 2003 1:17 AM
> > To: CF-Talk
> > Subject: RE: WDDX and UDF
> >
> >
> > It is much more complex than that and it doesn't concern pages but
> > display objects ... Anyway I will add to your example so that it is
> > closer to what I need, each "page" also has a couple of functions
> > defined by default and these one can also be changed by the user.
> > Let's take your page a as an example:
> >
> > Page A
> > Background color: red
> > Music: techno
> > UDF1: DisplayThumbnail
> > UDF1_param: ArtistName
> > UDF2: Playsong
> > UDF2_param: SongName
> >
> > As a user I can choose to replace DisplayThumbnail by
> DisplayResume or
> > PlaySong by PlayVideo and UDF2_param by ClipName, and save it to my
> > preferences.
> >
> > DO you have a better idea of what I mean ??
> >
> > Thanks
> >
> > Dominique
> >
> >
> >
> >
> > -----Original Message-----
> > From: Raymond Camden [mailto:[EMAIL PROTECTED]]
> > Sent: Tuesday, February 04, 2003 10:13 PM
> > To: CF-Talk
> > Subject: RE: WDDX and UDF
> >
> > So wait a minute - you mean your data structure looks like this -
> > kinda:
> >
> > Preferences
> > Page A
> > background color: red
> > music: techno
> >
> > Page B
> > coolness factor: high
> > hipness factor: can't walk through doors
> >
> > If so - why not simply store the preferences in a structure? How
> > exactly are you using the dynamic UDFs?
> >
> > ==============================================================
> > =========
> > Raymond Camden, ColdFusion Jedi Master for Mindseye, Inc
> >
> > Email : [EMAIL PROTECTED]
> > WWW : www.camdenfamily.com/morpheus
> > Yahoo IM : morpheus
> >
> > "My ally is the Force, and a powerful ally it is." - Yoda
> >
> > > -----Original Message-----
> > > From: D. Delcomminette [mailto:[EMAIL PROTECTED]]
> > > Sent: Tuesday, February 04, 2003 11:32 AM
> > > To: CF-Talk
> > > Subject: RE: WDDX and UDF
> > >
> > >
> > > Yeah, almost. Users can save preferences but I cannot use
> > the simple
> > > method you describe, because the same thig happens on
> > different pages.
> > > I mena users can save preferences for different pages and
> the same
> > > object has to handle all of them. So, I really need to save
> > for user x
> > > preference for page y a whole bunch of parameters amongst which a
> > > couple of functions.
> > >
> > >
> > >
> > > -----Original Message-----
> > > From: Raymond Camden [mailto:[EMAIL PROTECTED]]
> > > Sent: Tuesday, February 04, 2003 8:48 PM
> > > To: CF-Talk
> > > Subject: RE: WDDX and UDF
> > >
> > > Are you saying that based on user input, you would need to call a
> > > function but you don't know which at runtime? If your options are
> > > limited (let's say 3 differnet UDFs), you could use a simple cfif
> > > block...
> > >
> > > <cfif foo is 1>
> > > <cfset x = goo()>
> > > <cfelseif foo is 2>
> > > <cfset x = moo()>
> > > <cfelseif foo is 3>
> > > <cfset x = doodoo()>
> > > </cfif>
> > >
> > > Or, you can consider writing one UDF and passing the option (foo
> > > above) to the UDF.
> > >
> > > ==============================================================
> > > =========
> > > Raymond Camden, ColdFusion Jedi Master for Mindseye, Inc
> > >
> > > Email : [EMAIL PROTECTED]
> > > WWW : www.camdenfamily.com/morpheus
> > > Yahoo IM : morpheus
> > >
> > > "My ally is the Force, and a powerful ally it is." - Yoda
> > >
> > > > -----Original Message-----
> > > > From: D. Delcomminette [mailto:[EMAIL PROTECTED]]
> > > > Sent: Tuesday, February 04, 2003 10:34 AM
> > > > To: CF-Talk
> > > > Subject: RE: WDDX and UDF
> > > >
> > > >
> > > > Ouuuuuuuups ..... I wish my English was better .............
> > > >
> > > > I do not want to store anything as a function, but I have
> > > to! Because
> > > > some parameters amongst others are just the function the
> > > user chooses
> > > > to places at some point .
> > > >
> > > > Can't find how to explain it in another way.
> > > >
> > > > Thanks for your patience.
> > > >
> > > > Dominique
> > > >
> > > >
> > > > -----Original Message-----
> > > > From: webguy [mailto:[EMAIL PROTECTED]]
> > > > Sent: Tuesday, February 04, 2003 8:00 PM
> > > > To: CF-Talk
> > > > Subject: RE: WDDX and UDF
> > > >
> > > > Ok understand that. But what I don't understand is why
> > you need to
> > > > store the preferences as a function.
> > > >
> > > > Can't you just store the "struc of array of struct" ?
> > > >
> > > > WG
> > > >
> > > > > -----Original Message-----
> > > > > From: DDE [mailto:[EMAIL PROTECTED]]
> > > > > Sent: 04 February 2003 15:42
> > > > > To: CF-Talk
> > > > > Subject: RE: WDDX and UDF
> > > > >
> > > > >
> > > > > OK, I'll try to explain a bit more , but I can't give
> > > full details
> > > > > otherwise it will become to complex. I have a struc
> of array of
> > > > > struct and so on ... A part of is a description of
> > > columns appearing
> > > > > in a dhtml
> > > > table. For each
> > > > > column, I have a name, a datatype, a filter value ......
> > > > and an optional
> > > > > reference to formatting function ...
> > > > > Most of those data can be customized per user. That's the
> > > reason why
> > > > > I have to save it somewhere, and I choose to save in a user
> > > > related table of my
> > > > > database. I tried to store just the name of the function as
> > > > a string, but
> > > > > than I have other problems in the object managing the
> all stuff.
> > > > >
> > > > > Hope you get a better idea.
> > > > >
> > > > > Thanks Dominique
> > > > >
> > > > >
> > > > >
> > > > >
> > > > > -----Original Message-----
> > > > > From: webguy [mailto:[EMAIL PROTECTED]]
> > > > > Sent: Tuesday, February 04, 2003 6:16 PM
> > > > > To: CF-Talk
> > > > > Subject: RE: WDDX and UDF
> > > > >
> > > > > Typo..
> > > > >
> > > > > > if you do a = myfunction(a,b,c); ... "a" will contain
> > > the return
> > > > > > code, unless you return the struct of array of struct (as
> > > > a struct),
> > > > > > which you should be able to store as wddx
> > > > >
> > > > > should read
> > > > >
> > > > > if you do a = myfunction(a,b,c); ... "a" will contain
> > the return
> > > > > code.
> > > > >
> > > > > if you return the struct of array of struct (as a
> > > > struct),you should
> > > > > be able to store as wddx
> > > > >
> > > > > WG
> > > > >
> > > > >
> > > >
> > > >
> > >
> > >
> >
> >
>
>
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