hi michael,
@Inject only works in Tapestry pages and components (and mixins).
By default Tapestry will use the field type as an id and lookup the
corresponding ioc service.
I assume your Web Service Container was not started by the ioc
container so it runs outside its control. Therefore you have to first
obtain an ioc Registry first and then ask it explicitly for the service
you want to call. The builder methods are not meant to be called
except by the container :)
g,
kris
"Michael Bernagou" <[EMAIL PROTECTED]>
14.12.2007 10:51
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IoC global question
Hi,
I have a sort of general question about tapestry-ioc. In fact, I would
like
it to manage all the services of my webapp. In theory it should be the
case,
shouldn't be?
So to provides services to my MVC, no problem the syntax @Inject MyService
_myService; work perfectly. But, to provide services the same way for my
Dao
it's different. The same syntax doesn't provide any instance.
I used the tapestry-hibernate and declare my dao as services :
import org.hibernate.Session;
public static UserDao buildUserDao(@InjectService("Session") Session
session) {
return new UserDaoImpl(session);
}
public static UserService buildUserService(@InjectService("UserDao")
UserDao dao) {
return new UserServiceImpl(dao);
}
So my implementation can work. But to use the service, all the callers
have
to know a session object!
Ok, if my caller is a web service, and this web service want to call the
UserService, @Inject UserService _userService; DOES NOT work and
_userService is null! So I have to call explicitely the builder of my
service FROM the web service... If I do that, I bypass the IoC purpose
because I link it directly :
UserService us = AppModule.buildUserService( ... and then I have a
problem!
buildUserService need a UserDao, but my web service doesn't care about
knowing any kind of dao!
So, I should be able to use @Inject MyService _myService; anywhere in my
project and the tapestry-ioc should be able to give instance to all the
class...
Did I (probably) missed something?
--
Michael Bernagou
Java Developper
