Re: [CFCDev] Sanity check

[Ken Dunnington]

If you're calling an inherited method from within a subtype, then that 
sounds like normal behavior. Subtypes inherit the methods of the 
Supertype and they are treated as local methods, so if you have a Super 
with method A, a Subtype with method B, and method A makes a call to 
method B, there shouldn't be an error if the object you're using is an 
instance of the Subtype. However, if you ever instantiate the Super and 
try calling that method, you should get an error.

In other words, it's a potentially dangerous situation that's only 
working because of the circumstances in which it's being used. I'd 
recommend finding another way to get that value into method A. :)

On Nov 11, 2004, at 1:50 PM, Nando wrote:
The scenario is that i'm calling a function in the supertype, and the
supertype needs a value that the subtype has to do what it needs to do.
I could either call the subtype's getter for that value and pass it 
in, or,
as i just noticed, declare the getter in the subtype for that value 
public
and call the getter directly from the supertype. But that seemed "off" 
- and
i can't tell from my lack of experience if it's a CF implementation 
quirk or
perfectly fine to do it that way ... Perhaps i could create a wrapper
function in the subtype, get the value and pass it into the super.


-----Original Message-----
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]
Behalf Of Ken Ingle
Sent: Thursday, November 11, 2004 7:30 PM
To: [EMAIL PROTECTED]
Subject: Re: [CFCDev] Sanity check
You would not want to call the child object from the parent object.
The child extends the parent, so when you call the child you will
automatically have all of the parents capabilities available.
I can't think of any reason you would want a parent calling a child
from the parent.  Does that make sense?
Ken Ingle
[EMAIL PROTECTED]
http://www.kicweb.com/blog
I have 3 Gmail Invites Left, email me for one.
On Thu, 11 Nov 2004 19:14:41 +0100, Nando <[EMAIL PROTECTED]> wrote:
Hi all,
I'm just noticing that if i declare a function as public in a 
subtype, i
can
call it from within it's supertype in CF. At least that's what i 
think i'm
seeing.

Is that the way it "should be"? Sorry, i just have a few grey areas 
here
that i'm trying to fill in from my lack of OO experience.

I haven't had time to create a test case yet to isolate this, i'm on a
deadline for tomorrow morning, but the strange thing is i don't get an
error
if the function in the subtype is private, like you would from 
outside the
object. It seems to just get ignored.

???
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