Re: [webbeans-dev] Re: Stereotype inheritance proposal

oops forgot to attach the spec On Fri, Nov 21, 2008 at 1:05 PM, Gavin King <gavin(a)hibernate.org&gt; wrote: > I've got feedback from a number of people that stereotype inheritance > should be supported, and I agree with this feedback.

> > > I think we should just do it in the simplest possible way and say > simply that stereotype declarations are transitive, and > meta-stereotypes are inherited by the web bean. > > Therefore: > > 1. the sets of interceptor binding types are unioned > 2. any conflicts between default scope/deployment type defined by a > stereotype and its meta-stereotypes must be resolved by explicit > declaration on the web bean > 3. all restrictions apply cumulatively > > And I've written this into section 2.7.1.5 of the attached spec > draft. > > Questions: > ======== > > Does anybody think that the default scope/deployment type declared > directly by a stereotype should *override* the default > scopes/deployment types declared by its meta-stereotypes? This rule > makes a lot of sense, but it kinda makes things a little more > complex. > > For example: > > @RequestScoped > @Stereotype > public @interface Foo {} > > @SessionScoped > @Foo > @Stereotype > public @interface Bar {} > > Should we force a web bean that declares @Bar to explicitly specify a > scope, or is it better to let @SessionScoped on Bar override > @RequestScoped on Foo.

> > > > Another thing I've just noticed, that applies to interceptor bindings > inherited by both stereotypes and other interceptor binding types, is > that you could potentially have a web bean with multiple "instances" > of the same interceptor binding type - the same type, but different > member values. I think we should say that this is a > DefinitionException. > > For example: > > @Transactional(requiresNew=false) > @Stereotype > public @interface Foo {} > > @Transactional(requiresNew=true) > @Stereotype > public @interface Foo {} > > @Foo @Bar > public class X {} > > Then X has both @Transactional(requiresNew=false) and > @Transactional(requiresNew=true). > > > -- > Gavin King > gavin.king(a)gmail.com > http://in.relation.to/Bloggers/Gavin > http://hibernate.org > http://seamframework.org > -- Gavin King gavin.king(a)gmail.com http://in.relation.to/Bloggers/Gavin http://hibernate.org http://seamframework.org <Web Beans 20081121.pdf>_______________________________________________ webbeans-dev mailing list webbeans-dev(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/webbeans-dev