pass around references to them? (As opposed to replicating data and
code)
My Festival object contains collections of references: "Events",
"Venues", "Attributes" and "Artists". Each "Venue" component contains
references to those collection defining it parent (if any) and children.
By passing the reference I'm able to change a Venue component data which
is then reflected immediately in anything that references it.
This all works beautifully. The problem here is that I WASN'T passing
around a reference but rather try to duplicate the CFC (which, since
it's self-referencing, looped off into oblivion since it appears
Duplicate() can't handle self-references). I agree that you shouldn't
be replicating components (at least not like this) - but passing
references is what the whole game's about.
Or so I thought. what am I missing?
Jim Davis
-----Original Message-----
From: Simon Horwith [mailto:[EMAIL PROTECTED]
Sent: Sunday, November 02, 2003 3:42 PM
To: CF-Talk
Subject: RE: Duplicate() and CFCs cause JRUN Servlet Error (500 Null)?
like I said, I haven't had any problems doing thins like this
personally...
but as a best practice, you shouldn't be passing around references to
objects of any sort... java, component, com, or corba. If I need to
replicate an object instance, I generally loop over it with a for (foo
in
bar){} type loop and create keys with the same names and values in the
secondary structure. I also have to add a little isdefined() code to
handle
java null pointers when the object instance in question is of type java.
~Simon
Simon Horwith
CTO, Etrilogy Ltd.
Member of Team Macromedia
Macromedia Certified Instructor
Certified Advanced ColdFusion MX Developer
Certified Flash MX Developer
CFDJList - List Administrator
http://www.how2cf.com/
-----Original Message-----
From: Jim Davis [mailto:[EMAIL PROTECTED]
Sent: 02 November 2003 20:07
To: CF-Talk
Subject: RE: Duplicate() and CFCs cause JRUN Servlet Error (500 Null)?
Yeah - I was just assuming (bad word! Maybe "hoping" is a better one)
that duplicating a structure containing a reference to a CFC would
duplicate just the reference to the CFC and not try to dupe the whole
CFC. doesn't appear to work however.
At the moment I'm trying to integrate a new, CFC-based application
into
an older framework. I've got it working now with by using
structdelete() to drop the CFC reference before I dupe it. Next step
is
convert the whole shebang into CFCs - then the problem will just go
away
as I won't need to do this loop over the struct.
Jim Davis
-----Original Message-----
From: Raymond Camden [mailto:[EMAIL PROTECTED]
Sent: Sunday, November 02, 2003 2:54 PM
To: CF-Talk
Subject: RE: Duplicate() and CFCs cause JRUN Servlet Error (500 Null)?
I know the top level thing you are duplicating isn't a CFC, but
duplicate does not work correctly on CFCs, so if your struct contains
one, you can't/shouldn't call duplicate on it.
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