You are right about this. I hadn't realized you could do that with parameters. But that doesn't really apply to my problem since @Once won't normally be used on parameters. It came up because in some situations you have a method that does a hibernate query and returns a list of objects and you'd like to be able to easily refer to that property more than once in the template. A common situation is checking the list size in an @If before doing something with it.
On Thu, 2006-05-25 at 10:28 -0400, Jesse Kuhnert wrote: > Doesn't tapestry support marking a parameter as cache-able already? > > On 5/25/06, James Carman <[EMAIL PROTECTED]> wrote: > > > > Have you looked into AspectJ? > > > > -----Original Message----- > > From: Dan Adams [mailto:[EMAIL PROTECTED] > > Sent: Thursday, May 25, 2006 10:00 AM > > To: Tapestry users > > Subject: RE: Help in writing a custom annotation > > > > Okay, my annotation is called @Once and if put on accessor will make > > sure that the method is only executed once and then the return value is > > cached. Any further calls to the method will just return the saved > > value. I've got pretty far but I think I'm stuck as I want to do > > something that I could do with javassist but I'm not sure how to do > > within the tapestry enhancement classes. I've attached what I have so > > far and I would greatly appreciated it if someone could give me some > > suggestions on what to do. My big problem is: > > > > - I could add code at the beginning and end of the method with javassit > > but can't see a way to do that > > - Perhaps I could somehow rename the old method to something else and > > put in a new method that calls it? > > > > Thanks a lot. > > > > On Thu, 2006-05-25 at 07:11 -0400, James Carman wrote: > > > I'd look at the one that injects messages, or beans, or even the one > > that > > I > > > wrote for "autowiring" (available in SVN on the 4.1 branch). > > > > > > -----Original Message----- > > > From: Dan Adams [mailto:[EMAIL PROTECTED] > > > Sent: Wednesday, May 24, 2006 10:44 PM > > > To: Tapestry users > > > Subject: Help in writing a custom annotation > > > > > > I want to write an annotation that will intercept a method and add a > > > property to the class. I've started digging around in some of the > > > annotation sources but it's going pretty slow. Can someone point me at > > > the right place to look for where to start? > > > > > -- > > Dan Adams > > Software Engineer > > Interactive Factory > > 617.235.5857 > > > > > > > > --------------------------------------------------------------------- > > To unsubscribe, e-mail: [EMAIL PROTECTED] > > For additional commands, e-mail: [EMAIL PROTECTED] > > > > > > -- Dan Adams Software Engineer Interactive Factory 617.235.5857 --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
