Miscellaneous comments inline. On Thu, 18 Nov 2004 13:48:39 +0100, Matthias Wessendorf <[EMAIL PROTECTED]> wrote: > Hi all, > > I read the docs on subversion about Shale. > Well, a very interessting point. > However, I asked myself how it is related > to Struts/Commons - Chain. (The Proposal aka Jericho) > > Has Struts Shale no relationship to (Struts/Commons)-Chain? There is no particular relationship between Shale and *Struts*-Chain, which is designed to decompose the Struts 1.x request processor into little pieces. However, there is no reason you couldn't use *Commons* Chain inside a Shale environment in several different ways:
* When using a Filter as the application controller, compose all the pre-request and post-request processing to be performed into chains, so that you only need to configure a single filter in your web.xml file. * Have your action event handlers (for things like submit buttons) delegate to business logic that is expressed in a chain, rather than executing it directly. that is composed in a chain > Seams that Chain is only for Struts 1.2 ? > or 1.3, which is based on Servlet2.2 That's correct. > And Shale, that will be on top of Servlet2.4, > will use Filter for CoR, isn't it? That is the proposal, yes -- although, as I remarked above, you can implement CoR inside a filter, in addition to the ability to use more than one Filter. It remains to be seen which model is easier to program to, and for users to configure. > > Last but not least, the IoC (or dependency injection) > from Spring or Hivemind will be *included* into Struts / Shale? I believe that developers using a modern framework will expect an IoC solution to be included. Interestingly, the managed beans APIs in JSF provide "setter injection" IoC support already -- however, that may not be sufficient for everyone's needs. If the Shale core code itself was limited to just managed beans, then we could support incorporation of pretty much any IoC architecture by leveraging JSF's pluggability APIs. For example, the Spring folks have already built a JSF VariableResolver that allows the managed beans facility to instantiate Spring beans transparently. That's pretty cool. Applications, of course, could integrate directly with the IoC framework if they wanted to. > > Thanks for helping to clear my picture ;-) > > Greetings, Craig --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
