I think Tapestry makes it easier to separate your business logic out as IoC services or even Spring beans. It's easier to inject a service or bean in Tapestry than in any framework I'm aware of. My of the examples, demos or prototypes do intentionally blur the layers a bit, but you are anything but trapped in that simple, flat model.
On Thu, Nov 20, 2008 at 10:09 AM, Thiago H. de Paula Figueiredo <[EMAIL PROTECTED]> wrote: > One more example . . . > > Em Thu, 20 Nov 2008 14:59:05 -0300, Thiago H. de Paula Figueiredo > <[EMAIL PROTECTED]> escreveu: > >> This is a common confusion: there is the controller in the MVC pattern and >> the controller in the 3-tier architecture, and both are different things. A >> controller in MVC, in Tapestry, would be a page class. The View would be the >> template. This MVC controller has only user interface code, not business >> rules code. A controller in a 3-tier architecture has business rules code >> and no user interface code. This way, for example, I can implement a Swing >> interface to my applications just rewriting pure user interface code. No >> business rules code is rewritten. > > Once I made a Java Web frameworks comparison presentation (Struts 1, Struts > 2, JSF, and Tapestry 5). In order to compare them I wrote a simple > application (almost the same as the Ars Machina example project) in a 3-tier > architecture, just like I described above. The DAO and business rules were > implemented once, as a separate project. Then, for each framework, I built a > Web interface, just importing the example core project. If I implemented the > business rules in Tapestry page classes, for example, I would need to > rewrite them when implementing the Struts 1 (argh!) version. > > I love Tapestry (I even have some open-source projects wrote on the top of > it) and I don't plan to replace it, but I really want to be able to replace > the user interface or add a new one any time I want with very little effort. > The targets here are mantainability, flexibility, separation of concerns, > ..., and mental sanity. :) > > -- > Thiago H. de Paula Figueiredo > Independent Java consultant, developer, and instructor > http://www.arsmachina.com.br/thiago > > --------------------------------------------------------------------- > To unsubscribe, e-mail: [EMAIL PROTECTED] > For additional commands, e-mail: [EMAIL PROTECTED] > > -- Howard M. Lewis Ship Creator Apache Tapestry and Apache HiveMind --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
