As far as I'm concerned, the usage of the identity field from the storage mechanism is what I will probably always use. If my object is persisted in the db then eventually I will need to use it to reference itself in the persistence mechanism as well. So I have to have the ID from the persistence layer handy within my object if that is the case otherwise updates/deletes etc would be impossible in most cases.
Since the combination of objectype/id is unique within my system then I don't think I really need a UUID either, at least not for most purposes. However, I can also see why you would want a consistent way to compare to objects for equality - and at that point a UUID does make sense simply becuase it does provide a consistent method of comparing two objects within CF. For instance I could have a user with ID = 1 (the db id) and a UUID of x. Then I could have a organization ID = 1 (the db id) and a UUID of y. If I did a comparision of just object ID values then it would appear they are the same. However, by comparing UUID it is obvious they are not the same. In the end Patrick summed it up in one link to Fowlers page about the identity field. I think, sometimes, in our quest to OOify CF we are not seeing the forest through the trees (or is it the otherway around?) Bill On 11/14/05, Patrick McElhaney <[EMAIL PROTECTED]> wrote: > Hal? We don't need no stinkin' Hal. > > If it's good enough for Martin Fowler, it's good enough for me. :) > > http://www.martinfowler.com/eaaCatalog/identityField.html > > -- > Patrick McElhaney > 704.560.9117 > http://pmcelhaney.weblogs.us > > > ---------------------------------------------------------- > You are subscribed to cfcdev. To unsubscribe, send an email to > [email protected] with the words 'unsubscribe cfcdev' as the subject of the > email. > > CFCDev is run by CFCZone (www.cfczone.org) and supported by CFXHosting > (www.cfxhosting.com). > > An archive of the CFCDev list is available at > www.mail-archive.com/[email protected] > > > -- [EMAIL PROTECTED] http://blog.rawlinson.us If you want Gmail - just ask. ---------------------------------------------------------- You are subscribed to cfcdev. To unsubscribe, send an email to [email protected] with the words 'unsubscribe cfcdev' as the subject of the email. CFCDev is run by CFCZone (www.cfczone.org) and supported by CFXHosting (www.cfxhosting.com). An archive of the CFCDev list is available at www.mail-archive.com/[email protected]
