Maybe the AssistedInject extension does what you need:
http://code.google.com/p/google-guice/source/browse/#svn/trunk/extensions/assistedinject
Clarification:
http://publicobject.com/2007/06/assistedinject-easier-way-to-help-guice.html
Robbie
On Fri, Oct 24, 2008 at 12:29 AM, Incognito <[EMAIL PROTECTED]>wrote:
>
> Bob,
>
> This assumes that by the time you perform your chaining, you've
> already created an Injector. What if I want to specify a Provider
> inside a module even before I've created any injector for the first
> time?
>
> Essentially, my problem is this:
>
> class FooWrapper {
> private final Dependancy1 dependancy1;
> private final Dependancy2 dependancy2;
> private final RuntimeDependancy runtimeDependancy;
> @Inject
> public FooWrapper(...) {
>
> }
> }
>
> So the first two depenancies I know at compile time but the third is
> only known at runtime.
>
> Furthermore, the creation of FooWrapper is something that I want to
> configure INSIDE Bar:
>
> class Bar {
> private final FooWrapper fooWrapper;
> @Inject
> public Bar(FooWrapper fooWrapper) {
> this.fooWrapper = fooWrapper;
> }
>
> public Foo createFoo(RuntimeDependancy runtimeDependancy) {
> return new FooWrapper(..., ..., runtimeDependancy); // <== heres
> the problem
> }
> }
>
> So, what I'd effectively like to do is have guice inject only part of
> the dependencies at start-up and allow me to provide another component
> at runtime. Conceivably, something like a provider that takes
> arguments:
>
> RuntimeProvider<T> {
> <T> get(Object ... args);
> }
>
> This would allow me to implement Bar as follows:
>
> class Bar {
> private final FooWrapper fooWrapper;
> @Inject
> public Bar(FooWrapper fooWrapper) {
> this.fooWrapper = fooWrapper;
> }
>
> public Foo createFoo(RuntimeDependancy runtimeDependancy) {
> return runtimeProvider.get(runtimeDependancy);
> }
> }
>
> This way, I could wire up everything inside my modules and still have
> only 1 injector, and not have to do anything after the first injector
> is created...
>
> Is there anyway to do this with guice currently?
>
> Nathan
>
> >
>
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