Just have a look at com.google.inject.multibindings.MapBinder
Unfortunately it is only available in the trunk and I do not know if
this extensions is going to work with Guice 1.0. Just give it a try.
Sven
On Sep 16, 5:01 pm, Toki <[EMAIL PROTECTED]> wrote:
> Hi people,
>
> Let's consider the following situation.
>
> We have a service manager that handles the service specific operations
> and is
> unique per service.
>
> class ServiceManager {
> private BackendClient backend;
> private String serviceId;
>
> @Inject public ServiceManager(BackendClient backend, String
> serviceId) {
> this.backend = backend;
> this.serviceId = serviceId;
> }
>
> public boolean equals(Object obj) {
> //.....
> return Objects.equals(serviceId, ((ServiceManager)obj).serviceId);
> }
>
> public void handle() {
> // here are bussuiness logic
> backend.doThis1();
> backend.doThis2();
> // ...
> }
>
> }
>
> I want to have the collection of ServiceManager in one of the standard
> scopes,
> let it be singleton scope. How is it possible to implement this with
> Guice?
>
> The trivial implementation would be creating a SuperServiceManager
> that aggregates
> these ServiceManager classes.
>
> class SuperServiceManager {
> private Map<String, ServiceManager> mngrs = Maps.newHashMap();
> private BackendClient backend;
>
> @Inject public SuperServiceManager(BackendClient backend) {
> this.backend = backend;
> }
>
> public ServiceManager getManager(String serviceId) {
> if (!mngrs.contains(serviceId))
> {
> mngrs.put(new ServiceManager(backend, serviceId);
> }
> return mngrs.get(serviceId);
> }
>
> }
>
> And then we have to place SuperServiceManager in required scope.
> class MyModule extends AbstractModule {
> public void configure()
> {
> bind(SuperServiceManager.class).in(Scopes.SINGLETON);
> }
>
> }
>
> But it's the case where keyword "new" arise and some dependencies are
> handled by hands,
> like putting BackendClient. Maybe there is much more wise solution
> using some kinda
> general provider or one of Guice2 cool features.
>
> I hope that problem explained by me in this post is frequent enough
> that you'd solved it.
>
> Thank you.
--~--~---------~--~----~------------~-------~--~----~
You received this message because you are subscribed to the Google Groups
"google-guice" group.
To post to this group, send email to [email protected]
To unsubscribe from this group, send email to [EMAIL PROTECTED]
For more options, visit this group at
http://groups.google.com/group/google-guice?hl=en
-~----------~----~----~----~------~----~------~--~---
