I am confused here. You do know that you don't need to extend/implement any class/interface right? Or I am missing the whole point.
musachy On Thu, Feb 21, 2008 at 11:39 AM, <[EMAIL PROTECTED]> wrote: > >Funny; I was thinking the same thing about the static context stuff in > JSF > >that makes it really difficult to test in isolation. > > What makes you think that's difficult? I'm sure you're aware of mock > objects. There are a number of mock JSF test frameworks---JMock and Shale > come to mind. Writing actions and beans that extend or inherit MVC > classes/interfaces are worse than "static context stuff" because: > > 1. Java doesn't have multiple inheritance so if you want to make your own > base classes, you're forced to create an inheritance chain tied to the MVC > framework > > 2. Swapping out frameworks is next to impossible. > > 3. Classes can't stand on their own. > > 4. It's easier for Java beginners to mix business logic with MVC framework > code. > > We've been down this road before with struts1. Spring-MVC brought us the > next generation of thinking by making all framework dependencies > interfaces (implementations are provided but not required, like struts2). > JSF takes this idea to its logical conclusion. > > If your action and bean methods only refer to a framework context (which, > by the way, *is* injectable with Seam or with your own VariableResolver, > contrary to your statement in a previous post. For example, > http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3977385), you can > write them to support multiple frameworks simultaneously. In practice, no > one does this, but it demonstrates the flexibility of the JSF approach. I > can, for example, write an action class that works with both Struts2 and > JSF: > > public class CreateCustomerAction extends ActionSupport /* ActionSupport > req'd by struts2 */ { > ... > ... > > /** Stuts2 action */ > public String execute() throws Exception { > if (!customerDAO.create(...)) > addActionError("Unable to create customer"); > return INPUT; > } > > /** JSF action */ > public String createCustomer() { > if (!customerDAO.create(...)) > FacesContext.getCurrentInstance().addMessage("someId", "Unable to > create customer"); > return "input"; > } > } > > If JSF required the extension of a framework class or implementation of a > framework interface like struts2 does, the code above couldn't be written > without a mixin/delegation (esp. if the interfaces shared the same method > names like execute()). I hope you can see how JSF has a lighter footprint > than struts2. > > > > > *************************** IMPORTANT > NOTE***************************** The opinions expressed in this > message and/or any attachments are those of the author and not > necessarily those of Brown Brothers Harriman & Co., its > subsidiaries and affiliates ("BBH"). There is no guarantee that > this message is either private or confidential, and it may have > been altered by unauthorized sources without your or our knowledge. > Nothing in the message is capable or intended to create any legally > binding obligations on either party and it is not intended to > provide legal advice. BBH accepts no responsibility for loss or > damage from its use, including damage from virus. > ************************************************************************ > > --------------------------------------------------------------------- > > > To unsubscribe, e-mail: [EMAIL PROTECTED] > For additional commands, e-mail: [EMAIL PROTECTED] > > -- "Hey you! Would you help me to carry the stone?" Pink Floyd --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
