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It does take some getting used to, David. As
Brad points out, having an array of address objects belonging to a single person
would make sense. What to do with multiple people? If your needs dictate it, you
can have a collection type object -- just a fancy way of saying you can have an
array of Person objects. On the other hand, if all you need is some information
about people, you probably don't want to have your app instantiate a bunch of
persons, if all you need is there phone number. There's nothing wrong
with simply having a CFC return a query.
I find that it's very helpful for people
learning OO to build some apps that have NO databases involved. This is because,
as CF developers, we're so used to thinking of writing code that manipulates
data in a database. You really want to forget about the persistence issue until
you find that you really are "thinking in objects". Then, you'll find it very
easy to incorporate databases into your code. Just my advice.
Hal Helms
"Java for CF Programmers" class
in Las Vegas, August
18-22
www.halhelms.com
Would this also work if I wanted to return a query of, say, 10 people and
all their addresses. I guess I am struggling on how to deal with the
traditional cfquery cfoutput type stuff that is almost 100% of what I am
accustomed to doing. A small code sample would be greatly
appreciated. Am I thinking wrong to want to output a query?
TIA,
---------------------
David Mineer
---------------------
Don't wish it was easier; wish you were
better.
Don't wish for less problems; wish for more skills.
Don't wish
for less challenges; wish for more wisdom.
----- Original Message -----
Sent: Wednesday, August 06, 2003 12:36
PM
Subject: [CFCDev]
I'd make addresses a property in the person cfc, as a list,
array or
structure of address objects. Each address would be an
address object.
-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf
Of David Mineer
Sent:
Wednesday, August 06, 2003 2:24 PM
To: cfcdev
Subject: [CFCDev]
I
have Hal's book and was reading his article on macromedia, and
also
reading all the posts to this list. I am trying to cement in my mind
oop and
cfc's. Can someone give me an idea on the following.
Almost
every page I have has some kind of db interaction. Using Hal's
example of
composition, a person has an address, I would like to understand
how to
best implement this using a cfc. But, I want to understand it from
the
point of a person having more than one address, a
one-to-many
relationship.
If I have a list of persons in a database,
with 1 or more addresses linked
via a separate table, how do I code this
using a cfc (getting info on a
person from the db given their id). Right
now I would simply link the two
using some type of sql join in a single
cfc. But I am wondering if there is
a better way calling a separate cfc
(address.cfc) that would give me better
encapsulation and
such.
TIA,
---------------------
David
Mineer
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