Getting Guice to inject the same instance, without Singleton scope

[rvdalen]

Hi,

I am trying to learn Guice as part of working with the Play framework.

I have the following setup:

I have a ProjectController class that has the following contstructor:

    class ProjectController @Inject() (repo: ProjectRepository, uow: UnitOfWork)

The ProjectRepository also has a UnitOfWork dependency.

I would like Guice to inject the same UnitOfWork instance into the ProcjectRepository and into the ProjectController,

without having to make the UnitOfWork a singleton.

Is there a way to do this in Guice currently?

Regards

--Rouan

[Stuart McCulloch]

It sounds like you need a scope: https://github.com/google/guice/wiki/Scopes

Singleton is one form of scope, the servlet extension defines @RequestScoped which will inject the same instance per-servlet-request and @SessionScoped which is per-session

You can also define your own custom scope if these don't fit - however, writing your own scope is tricky and if you go down that route then you might want to take a look at Tim's scope helpers in https://github.com/timboudreau/scopes

--
You received this message because you are subscribed to the Google Groups "google-guice" group.
To unsubscribe from this group and stop receiving emails from it, send an email to google-guice...@googlegroups.com.
To post to this group, send email to google...@googlegroups.com.
Visit this group at https://groups.google.com/group/google-guice.
To view this discussion on the web visit https://groups.google.com/d/msgid/google-guice/1c1119d5-b836-4e83-a09e-90d859493c5b%40googlegroups.com.
For more options, visit https://groups.google.com/d/optout.

[rvdalen]

Thanks Stuart,

I was hoping that I did not have to write my own scope :).

This feature seems like it should be supported by the IoC container out of the box.

Maybe I just don't understand the complexity behind my request :)

I will look into writing my own scope then.

Regards

--Rouan