David, Perhaps I misinterpreted the UML for command pattern as is shown in "Applied Java Patterns" by Sun. I was assuming that the Action class was a combination of the aCommand:Command and the :Receiver on page 52 and herefore contained both the execute() and the doAction() (AKA perform). -Tony David Graham <[EMAIL PROTECTED]> wrote:I'm not sure what you mean by all that. The perform method was just replaced by execute so it's still an implementation of the command pattern. Perform now just wraps a call to execute to maintain backward compatibility but I imagine it will be removed in later versions.
David >From: Tony Baity >Reply-To: "Struts Users Mailing List" >To: Struts Users Mailing List >Subject: deprecated perform method in Action means roll your own Command >Pattern >Date: Thu, 24 Oct 2002 18:13:40 -0700 (PDT) > > >Hello, >Just got back on the list again... man is it busy here.... >hey... about the command pattern that appears to be disappearing from the >Action class... do we roll our own now just using Action as a base class? >I really like that combined execute and perform functionality... so that I >can weed out common (background) functionality between Action classes and >keep the size of the individual Action subclasses down to a minimum... and >also perhaps put common initialization in an init() method (which is in the >execute method just above the execution of the perform) >So... judging from the deprecation that I now (guess its been there for a >while but just haven't looked) find in the Action class there will be a day >when the perform method is GONE! Also, the example Actions now (BTW when >did this change) override the execute not the perform. Are command patterns >then considered part of the business logic? >... if so, then I am confused since I have always considered the Action >classes borderline business logic since they basically hold the steps of a >transaction. >-Tony ( I think the really cool people now hang out in the Commons user >group) > > > > >--------------------------------- >Do you Yahoo!? >Y! Web Hosting - Let the expert host your web site _________________________________________________________________ Broadband? Dial-up? Get reliable MSN Internet Access. http://resourcecenter.msn.com/access/plans/default.asp -- To unsubscribe, e-mail: For additional commands, e-mail: --------------------------------- Do you Yahoo!? Y! Web Hosting - Let the expert host your web site
