This whole discussion is why some of us think the DAO pattern is evil (along
with CRUD) ;)


-----Original Message-----
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf
Of Raymond Camden
Sent: Monday, November 15, 2004 3:20 PM
To: [EMAIL PROTECTED]
Subject: RE: [CFCDev] table DAO

Ok, so you don't like Doug's idea - but can you explain how you do filters
on the result sets then? Do you do it in the client? Do you pass filter info
to the dao?

===========================================================================
Raymond Camden, Director of Development for Mindseye, Inc (www.mindseye.com)
Member of Team Macromedia (http://www.macromedia.com/go/teammacromedia)

Email    : [EMAIL PROTECTED]
Blog     : www.camdenfamily.com/morpheus/blog
Yahoo IM : cfjedimaster

"My ally is the Force, and a powerful ally it is." - Yoda  

> -----Original Message-----
> From: [EMAIL PROTECTED] 
> [mailto:[EMAIL PROTECTED] On Behalf Of Tim Van Der Hulst
> Sent: Monday, November 15, 2004 2:18 PM
> To: [EMAIL PROTECTED]
> Subject: RE: [CFCDev] table DAO
> 
> getAllActive()
> getByOwner( ownerID )
> getAllPrecedingDate( date )
> 
> oh yep avoid that stuff like the plague. haha my early DAO's 
> were like that before I realised all I needed was the one 
> base DAO and the very occasional need to create a specialised 
> subclassed DAO. Mind you in saying that I still haven't 
> really tackled multiple tables/joins yet tho.
> 
> TiM
> 
> 
> 
> -----Original Message-----
> From: Doug Keen [mailto:[EMAIL PROTECTED]
> Sent: Tuesday, 16 November 2004 9:13 a.m.
> To: [EMAIL PROTECTED]
> Subject: Re: [CFCDev] table DAO
> 
> 
> > Ok then - so that brings up -another- question. getAll by 
> itself, IS rare.
> > Most of the time I'm doing getAll where Active=1, or getAll where 
> > Owner=Me, or some such. So if we have a Gateway CFC to 
> handle getting 
> > a bunch of crap, where do we put filters? That's business 
> logic - and 
> > it seems like it would make sense in the core CFC for the datatype.
> 
> Often, in that situation, I'll actually create different 
> methods for different filtering options.  For example, I may 
> have a CFC with these
> *public* methods:
> getAll()
> getAllActive()
> getByOwner( ownerID )
> getAllPrecedingDate( date )
> 
> Those public methods would then simply relay the call to a 
> *private* method that contains the SQL and could have an 
> interface like Tim
> describes:
> getAll( condition, order )
> 
> That way, you get the best of both worlds... the caller 
> doesn't know about the table structure, but your SQL code is 
> isolated in a single private method.  The public methods 
> simply relay the appropriate information into the private 
> method and return the results.
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