The reason is pretty simple: it doesn't make any sense otherwise.
AssistedInject is for when your code needs to inject something that needs
some "guice managed" objects and some "user managed" objects. If I have a
class Foo that looks like:
Foo { @Inject Foo(Manager manager, @Assisted String name) { } }
how is it supposed to be injected? If my method is "@Inject setFoo(Foo foo)
{}", what would the value for 'name' be? Similarly, if I inject "@Inject
setFoo(Provider<Foo> pFoo) { pFoo.get(); }", when I call get on the
Provider, what would the value of 'name' be?
AssistedInject requires a factory for creating Foo:
FooFactory { Foo create(String name); }
So that places that need a Foo inject the FooFactory and call the create
method, so that 'name' can have a value.
Sam
On Thu, Jul 2, 2009 at 1:25 PM, gabe97330 <[email protected]> wrote:
>
> Is it an explicit design decision that a Provider cannot be created
> using Assisted Inject? If so, is it based on technical or policy
> driven considerations?
>
> If not, is there an example someone could provide for how to make it
> work? My various attempts fail with the error message indicating that
> Guice is not finding an implementation for the assisted constructor
> parameter(s), i.e. something like the following (edited):
>
> No implementation for java.lang.Integer annotated with
> @com.google.inject.assistedinject.Assisted(value=) was bound. while
> locating java.lang.Integer annotated with
> @com.google.inject.assistedinject.Assisted(value=)
> for parameter 0 at ProviderOfA.<init>(at ....configure)
>
> Thanks,
>
> Gabe
> >
>
--~--~---------~--~----~------------~-------~--~----~
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
-~----------~----~----~----~------~----~------~--~---
