On Fri, 18 Feb 2005 21:00:40 -0500, Ted Husted <[EMAIL PROTECTED]> wrote: >Used properly, the Command/Chain itself provides IoC. If you want to use a different >implementation, swap in a different Command.
The Command/Chain, however, *is* the implementation of the RequestProcessor in the ActionServlet so it cannot in principle provide IoC to the ActionServlet in this respect. Command/Chain is *cool*, I agree, but someone might not agree. That is why a suggestion of using both IoC and CoR is made. I also think that it would be good to provide some support for AOP. But, that is another topic. > But, all this should be extracurricular to Struts. All Struts needs to do is > collect the input, pass it along to the appropriate business command, and > select the next page to display. Where the business commands come from should > remain an exercise for the developer. However, if you are responding to my notes, which you apparently are, the topic was the code supplanting the RequestProcessor, which is not an exercise for the developer. This having two different discussions of the chain, one to supplant the RequestProcessor and one for the business logic leads to these misunderstandings. > > On Fri, 18 Feb 2005 16:09:21 -0800, Shey Rab Pawo wrote: > > For what it is worth: -1 > > > > To follow Martin Fowler's reasoning > > (http://www.martinfowler.com/articles/injection.html), a > > MovieLister wants to use a MovieFinder interface but needs to > > create a MovieFinderImpl implementation of the MovieFinder > > interface to do so. We want the MovieLister to be coupled only to > > the interface and not to the implementation for all the reasons > > that decoupling is supported in OOP patterns. Most importantly, we > > want to be able to exchange implementations or to improve the > > implemenation without changing the MovieLister class. IoC does > > this. This seems to me to be very different than CoR and not > > incompatible with CoR. I would like to see Action be IoC and for > > RequestProcessor to be IoC and to have a default implemenation of > > RequestProcessor that is CoR. This would be close to the ideal in > > my mind. There are two types of plugins that are both very useful > > and they do not seem to be in competition but consistent to me. > > Does this make sense to anyone? > > > > > > On Mon, 14 Feb 2005 10:12:40 -0600, Vic <[EMAIL PROTECTED]> wrote: > > > >> > >> Frank W. Zammetti wrote: > >> > >>> the more the idea of making an Action > >>> a Command appeals to me. > >>> > >>> > >> +1. > >> > >> In essence ... less Struts and more Chain. > >> 2 chains, a user chain, and a request processing chain. > >> > >> (even one day go as far that the user-chain.xml replaces struts- > >> config.xml. The chain xml can have infinite nubmer of elements > >> now. And 10 years from now... have a declerative langage... where > >> all you do is write in xml what you want to happen.) > >> > >> > >> .V > >> > >> -- > >> Forums, Boards, Blogs and News in RiA <http://www.boardVU.com> > >> > >> ------------------------------------------------------------------ > >> --- To unsubscribe, e-mail: [EMAIL PROTECTED] For > >> additional commands, e-mail: [EMAIL PROTECTED] > > --------------------------------------------------------------------- > To unsubscribe, e-mail: [EMAIL PROTECTED] > For additional commands, e-mail: [EMAIL PROTECTED] > > -- No one ever went blind looking at the bright side of life. --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
