Very nice ;>
On Oct 16, 10:58 pm, "[EMAIL PROTECTED]" <[EMAIL PROTECTED]> wrote:
> Child injectors (aka. chained injectors, hierarchical injectors)
> enable injectors that inherit state from another injector. This is
> useful for splitting up the aspects of an application -- perhaps into
> a user interface injector and a persistence injector. Or to maintain
> separate instances of a subapplication, such as the individual
> workspaces of an IDE. Child injectors are intended for frameworks and
> extensions, so most users won't encounter them directly.
>
> I've recently rewritten Guice's implementation from scratch. The new
> implementation is tighter. For example, it prevents bindings from
> overlapping in parent and child. If you're using the current
> implementation from SVN, please try out the new code. Any
> incompatibilities should show up in the form of errors when you create
> your injector. The API has also moved from a static method on the
> Guice class to an instance method on Injector.
>
> Here's the new method's Javadoc (from Injector.java):
>
> /**
> * Returns a new injector that inherits all state from this
> injector. All
> * bindings, scopes, interceptors and type converters are inherited
> -- they
> * are visible to the child injector. Elements of the child injector
> are not
> * visible to its parent.
> *
> * <p>Just-in-time bindings created for child injectors will be
> created in an
> * ancestor injector whenever possible. This allows for scoped
> instances to be
> * shared between injectors. Use explicit bindings to prevent
> bindings from
> * being shared with the parent injector.
> *
> * <p>No key may be bound by both an injector and one of its
> ancestors. This
> * includes just-in-time bindings. The lone exception is the key for
> [EMAIL PROTECTED]
> * Injector.class}, which is bound by each injector to itself.
> */
> Injector createChildInjector(Iterable<? extends Module> modules);
>
> You can find this update in Guice SVN.
>
> Cheers,
> Jesse
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