From: "Sylvain Wallez" <[EMAIL PROTECTED]> > Konstantin Piroumian wrote: > >From: "Artur Bialecki" <[EMAIL PROTECTED]> > > ... > > > >May I ask a question? Why do you need an XSP based action? IMHO, actions > >should be pure Java classes that perform some programmatic logic and you > >have Generators for XML generation, based on the result from actions. > > > >Are there any real use-cases? > >
Thanks Arthur and Sylvain for excellent explanations! I am thinking in a little Struts way where you can do anything using pure Java, but I can agree that sometimes it can be useful to have XSP actions. Further comments bellow: > > I think the need expressed by Arthur is the hot-recompilation nature of > XSPs, which it really great at development time, along with the > high-level constructs offered by taglibs. > > But there are cases where an XSP can be more than a generator : consider > the ESQL logicsheet, which provides powerful tags for querying > databases. But what if you would like to choose a particular page > depending on the query results ? If the XSP is the pipeline generator, > redirect (even internal) is not possible. If the XSP is an action, > redirect is possible. I've never used ESQL. We are using EJBs, so I get pure Java Beans and Collections as a result of a business call, so having placed them in request then using either XSP and/or CastorTransformer I get XML from them. And I can for sure make a redirect depending on the result of EJB call. > > That's what the ServerPagesAction is for. It is to be used in > conjonction with the action taglib (providing redirect and action result > primitives) and the capture taglib (for capturing parts of the > XSP-produced XML for later use). Redirects from inside of an XSP reminds me of C1 times and that approach was not recommended in C2. Am I wrong? > > In a sense, the XSP action belongs to the same domain than pipe-aware > selectors that were discussed a while ago. And were rejected because of some conceptual inconsistencies or something like that, aren't they? Konstantin > > Sylvain > > -- > Sylvain Wallez > Anyware Technologies Apache Cocoon > http://www.anyware-tech.com mailto:[EMAIL PROTECTED] > > > > > --------------------------------------------------------------------- > To unsubscribe, e-mail: [EMAIL PROTECTED] > For additional commands, email: [EMAIL PROTECTED] > --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, email: [EMAIL PROTECTED]
