I'm new to CF so this may be a dumb statement
I thought the access attribute of cffunction would limit the way someone
could execute the cfc.
If you have RSS disabled, wouldn't that disable introspection?
Isn't this enough or am I missing something?
-Original Message-
From:
I'm working on a small financial site that uses a lot of financial formulae
(duh). I'm also an OO newbie and trying to get up to speed on the
methodology with this project (using machii).
Since a lot of the financial formulae are dependent upon each other, one of
the troubles I'm having is with
I'm pretty much a beginner myself, but as a general plan, i would do
calculation A on the init, store it in the variables scope, and then access
result A for functions B, C, D and E, if that makes sense. Store result B in
variables scope and use it for C, etc.
From what you describe, it seems you
Maybe A, B, C, D, and E should each be a CFC? And you could have
another CFC (let's call it DAO) that grabs values from the database.
So A would would talk to DAO to get the values. A doesn't know
anything about a database and DAO doesn't know anything about
calculations.
B would talk to A to
So the component would have an init() function that would process all
calculations that have other calculations depend on them?
Since the real app has around 30 calculations (and growing!) with some
fairly complex relationships, this might create some unnecessary(?)
overhead.
Anyway, from what
This sounds like a spreadsheet. Are the formulas in spreadsheets now?
Could they be?
Could you work with the spreadsheets programatically, putting the
input values in the appropriate cells and getting the output values
out of the calculated cells?
That way the formulas wouldn't be embedded in
Someone can correct me if I'm wrong, but if you create a reference to the
cfc object in memory with cfobject, or the createObject function, you can
refer to the object without recreating the object, but run functions from
within the object with very little overhead.
If you'd like to see how one
Bingo. A lot of this is from a spreadsheet. Unfortunately, using the
spreadsheet to power the app is not an option at the moment.
The calculations are fairly standard financial calculations (as found in
excel): Standard Deviation, Correlation Coefficient etc.
Other than the interdependencies
Sam,
You may want to take a look over at CFLib.org. Many of those formulas are
already written up as UDFs, which are essentially just CFC methods. It may
save you some time...
-Rob
Sam Clement [EMAIL PROTECTED]@cfczone.org on 11/09/2004 10:49:10 AM
Please respond to [EMAIL PROTECTED]
For the calculations that are repetitive, would a UDF be a good solution? Or
does that move us away from the OO goal?
BN
Brent Nicholas - EclecticDetroit, LLC.
http://www.EclecticDetroit.com
248.767.5516
[EMAIL PROTECTED]
[EMAIL PROTECTED]
On the other hand, you have different fingers.
From:
Barry, would you mind showing a snippet of your client-side logic that
would deal with this XML?
Thanks,
On Tue, 9 Nov 2004 17:41:43 +1000, Barry Beattie [EMAIL PROTECTED] wrote:
The UI doesn't contain any business logic, it'smerely acting on data that
the business layer provides.
I've actually got the formulas up and running fine. It was fun getting them
to work and not as complicated as all that (it's just transposing the
arithmetic really - the brain work comes from the people who came up with
the formulae!).
Right now, I'm just trying to figure out the best way to
Are these reports of data from a DB? Wouldn't it be better to just
use the DB for all these then?
Doug
On Tue, 09 Nov 2004 11:54:02 -0500, Brent Nicholas
[EMAIL PROTECTED] wrote:
For the calculations that are repetitive, would a UDF be a good solution? Or
does that move us away from the OO
On Tuesday 09 Nov 2004 18:07 pm, Sam Clement wrote:
seems like the best bet. I'm just wondering how to implement it so that it
meets the above criteria.
I'd suggest a com.abovestudios.clientName.util.A and .B etc.
You can then create these into a shared scope (session) and use them easily in
Actually I do use the DB for standard deviation... But you're right, maybe
I could use it for more calculations...
In any case, I think I'll create a simple calculations CFC with separate
functions for each calc. These functions can call each other as needed.
The DAO can then be passed in to
I was reading in Core J2EE Patterns that a DAOs
methods be used for returning external persistent data to the client is not
just exclusive to RDBMS. This makes sense, but I was wondering if a DAO should
be used for accessing things like a directory structure with cfdirectory. Also
could it
Does exclusive cflockings of the application scope prevent to access the scope
from *everywhere*?
Sample code:
--
Application.cfm:
cfif not structKeyExists(application, properties) or not
structKeyExists(application, components)
cflock scope=application timeout=20 type=exclusive
Yeah, I'm sold on OO. I've encountered too many setbacks doing things
procedurally (even with trying to keep things modular). Mainly maintenance
and extensibility issues.
It's going to be a long road ahead, but I'm pretty sure it'll be worth it.
Cheers,
Sam
-Original Message-
From:
I think it makes sense to have a single CFC that encapsulates access
to the file system so that rather than having CFFILEs and
CFDIRECTORYs throughout the code all file system related operations
go through the CFC. To date, I've only seen that concept in practice
once so I wouldn't call it a
I think it depends ... on the application. I noticed that when i first began
to move toward OO, my thinking was centered around what the code does. I've
found i needed to shift my thinking a little to first ask myself what does
the application do? In my mind, an object oriented design is centered
Hi everyone,
I'm trying to figure out how to set a property on a CFC and reference it on
my calling page. In VBScript I can define as many properties as I'd like and
reference them via objName.PropertyName. I'm assuming that's possible with
local CFCs (I'm not intersted in web services at all on
Ummm, what about a public getter? Or am i missing something?
cffunction name=getMyProperty access=public returntype=string
output=false
cfreturn variables.getMyProperty /
/cffunction
cffunction name=setMyProperty access=public returntype=VOID
output=false
cfargument
just to make it clear, in case my example isn't obvious,
cfset myProperty = myObj.getMyProperty() /
is on the calling page.
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