It might be nice if there was a way to register an
interface with the ActionServlet in the config file
for it to initialize a service. All the
ValidatorServlet I made does is parse the xml file
with the Digester and put an object into application
scope. If a class could be registered, then a servlet
wouldn't hang around for no reason and it wouldn't
need to be defined in the web.xml. And it sounds like
a lot of people extend the ActionServlet just to
initialize resources on startup.
David
--- Ted Husted <[EMAIL PROTECTED]> wrote:
> I agree that most extensions would be best written
> as independant
> servlets that plug into the application alongside
> the Struts
> ActionServlet. Though, I'm not sure they would need
> to register with the
> ActionServlet to access other parts of the
> framework.
>
> I haven't worked with the Digester directly, but
> most of the other
> Struts services are already exposed through the
> application context.
> Custom tags, for example, already access the Action
> Mappings this way.
> So any other servlet in the application (since
> that's all JSP's are)
> should be able to do the same.
>
> Another example is the Generic Connection Pool. The
> datasource is
> exposed through the application context and other
> services, like the
> TagLibs JDBC tags, can use the pool without knowing
> anything about
> Struts (or Struts knowing anything about them).
>
> So I would suggest that if there are other services
> that an extension
> needs to share that we expose them through the
> Application context.
>
> Oleg V Alexeev wrote:
>
> > To support flexible extensions mechanism for
> struts there are can be
> > made some additions to the core structure of the
> framework -
> >
> > 1. Add ability to register components or external
> servlets (at
> > application level) via struts-config file.
> > 2. Give such external components or servlets
> ability to use action
> > mappings database from ActionServlet.
> > 3. Extend core API of struts to support pluggable
> extensions - for
> > example use event model or direct calls via
> registrations in action
> > mappiongs database.
> >
> > The best way for my mind is to write external
> servlets, register it in
> > struts ActionServlet and use it as external
> services. This approach
> > can be useful in case of mutliple ActionServlet
> instances in one
> > application - every ActionServlet subscribe to use
> and uses some
> > amount of external services.
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