Barney, What are some of the uses of onApplicationEnd?
Andy -----Original Message----- From: Barney Boisvert [mailto:[EMAIL PROTECTED] Sent: Saturday, March 12, 2005 5:01 AM To: CF-Talk Subject: Re: Application.cfc - why? what's it for? A lot of it depends on how you currently use Application.cfm, and how important the features that you can only get from Application.cfc are. If you're just using Application.cfm for your CFAPPLICATION tag and setting global variables, then Application.cfc isn't going to really do anything for you. The only difference will be that you have to type a bunch of extra CFC-related stuff. However, repackaging Application.cfm in a new way isn't the reason for Application.cfc. With the CFC, you can do a lot of new things that are simply impossible with Application.cfm. For instance, you get events for application end, and session end, neither of which you've the ability to access before. The session end event, in particular, can be very useful for certain applications You also get events for application start, session start, request start/end, and errors. Those are places that you've already had access to, though with the the CFC, the access is much more controlled and abstracted. Application start, moreso than the others, is quite nice, because it lets you iniitalize all your application-scope variable without having to worry about single threading access. Very handy for avoiding subtle little bugs when you're starting up under load. Of course, by leveraging the new events, you do lose a little bit of "ad hoc-ness". For example, if you're using a pair of CFIF tags and a CFLOCK tag to protect your application initialization in Application.cfm (the usual way of doing it), it's trivial to "restart" your application on the fly by simply adding a "false" to those conditionals. With onApplicationStart, however, you can't do that, becuase CF is internally taking care of the nitty-gritty stuff, so you have to change your application name, or restart CF. Bottom line, Application.cfc has some nice features that you may or may not be useful to you. It also lets you package your app framework code in a far more abstracted way than Application.cfm, which may or may not tickle your fancy. However, even if you don't use any of the cool new things Application.cfc brings to the table, you don't really move backwards at all by starting to use it. And more importantly, when you do need some of the things you can only get with the CFC, you'll already be using it, so you won't have to switch things over at that point. As neat as CF7's feature set is, Application.cfc is probably the best new thing in the release. It doesn't get the press that some other features have gotten, because it's 100% devoid of "flashiness", but it's definitely a Good Thing. cheers, barneyb On Sat, 12 Mar 2005 15:27:02 +1100, Mike Kear <[EMAIL PROTECTED]> wrote: > I think the full implications of using application.cfc rather than > application.cfm has escaped me. Can someone please elaborate on it > for me? > > Is there a significant added usefulness in handling application-level > things in the cfc or is it merely a different way of doing things that > we were already doing in the application.cfm? > > -- > Cheers > Mike Kear > Windsor, NSW, Australia > Certified Advanced ColdFusion Developer > AFP Webworks > http://afpwebworks.com > ColdFusion, PHP, ASP, ASP.NET hosting from AUD$15/month > -- Barney Boisvert [EMAIL PROTECTED] 360.319.6145 http://www.barneyb.com/ Got Gmail? I have 50 invites. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~| Logware (www.logware.us): a new and convenient web-based time tracking application. Start tracking and documenting hours spent on a project or with a client with Logware today. Try it for free with a 15 day trial account. http://www.houseoffusion.com/banners/view.cfm?bannerid=67 Message: http://www.houseoffusion.com/lists.cfm/link=i:4:198541 Archives: http://www.houseoffusion.com/cf_lists/threads.cfm/4 Subscription: http://www.houseoffusion.com/lists.cfm/link=s:4 Unsubscribe: http://www.houseoffusion.com/cf_lists/unsubscribe.cfm?user=11502.10531.4 Donations & Support: http://www.houseoffusion.com/tiny.cfm/54
