Sorry, I misinterpreted your previous message.
Are you sure myModule doesn't require an AirlineCache? That's the error
you get when depending on a private binding from outside the PrivateModule
that configured it. The error message should say what needed an
AirlineCache, below what you posted.
On Thursday, 24 March 2016 10:40:17 UTC-4, Chris Kessel wrote:
>
> I'm curious why. "myModule" needs nothing from, and provides nothing to,
> the airlinesModule. Why would it also need to be wrapped in a
> PrivateModule? The only reason I'm wrapping airlineModule is because I have
> a 3rd module I want to add which would have conflicts with airlineModule.
> My first step was trying to get airlineModule to work as a PrivateModule
> before adding in the complexity of the 3rd module.
>
> On Wednesday, March 23, 2016 at 6:57:11 PM UTC-7, Tavian Barnes wrote:
>>
>> You have to put both of them in PrivateModules, and export the things you
>> need.
>>
>> On Wednesday, 23 March 2016 13:16:51 UTC-4, Chris Kessel wrote:
>>>
>>> I must be doing something wrong then. I'm using Dropwizard, which does
>>> this behind the scenes:
>>> injector =
>>> injectorFactory.create(this.stage,ImmutableList.copyOf(this.modules));
>>>
>>> I'm passing in that list of modules.
>>>
>>> This works:
>>> Arrays.asList(myModule, airlineModule);
>>>
>>> This fails:
>>> Arrays.asList(
>>> myModule,
>>> new PrivateModule() {
>>> protected void configure() {
>>> install(airlinesModule);
>>> }
>>> });
>>>
>>> It fails with:
>>>
>>> 1) Unable to create binding for com.kessel.airlines.AirlineCache. It was
>>> already configured on one or more child injectors or private modules
>>> bound at com.kessel.airlines.AirlineModule.provideAirlineCache()
>>> (via modules: com.kessel.MyMain$1 -> com.kessel.airlines.AirlineModule)
>>> If it was in a PrivateModule, did you forget to expose the binding?
>>>
>>> However, the AirlineCache is provided in the AirlineModule. Why is
>>> wrapping it in a PrivateModule causing this failure?
>>> @Provides
>>> @Singleton
>>> public AirlineCache provideAirlineCache() {
>>> ...
>>> }
>>>
>>> On Tuesday, March 22, 2016 at 4:53:28 PM UTC-7, scl wrote:
>>>>
>>>> Private modules is the way to go.
>>>> A binding in a private module can see all other bindings in the same
>>>> private module and all bindings of all non private modules.
>>>>
>>>>
>>>>
>>>> On 22.03.2016 21:58, Chris Kessel wrote:
>>>>
>>>> I'm adding two Guice modules, but they both have an @Provides for the
>>>> same item. They're both 3rd party modules, so I can't modify the code. How
>>>> do I prevent the collision? I really need each module to use it's own
>>>> provided version. I guess the equivalent of each living within it's own
>>>> "scope" where it's provided items aren't visible to the other modules.
>>>>
>>>> Guice.createInjector(Stage.DEVELOPMENT, Arrays.asList(moduleA,
>>>> moduleB));
>>>>
>>>> I've tried wrapping them in a PrivateModule, but then they don't seem
>>>> to even see their own @Provides...maybe I'm not understanding how to
>>>> configure a PrivateModule? I'll actually want expose one specific class
>>>> from each module to to my module that I'm developing, but my first step
>>>> was
>>>> trying to get these two other modules to coexist.
>>>>
>>>> The injector supports creation with multiple modules and it seems like
>>>> provider collision would happen now and then, so presumably there's some
>>>> way to deal with that I'm not groking...
>>>>
>>>> Thanks,
>>>> Chris
>>>>
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