Private modules couldn't provide possibility to create 2

Guice version: 2.0 

My steps: 
1) Create the interface Builder and it's implementation BuilderImpl 
annotated with @Singleton 
    interface Builder {} 
    @Singleton 
    static class BuilderImpl implements Builder {} 
2) Create the interface Manager and it's implementation ManagerImpl 
annotated with @Singleton which depends on Builder (constructor 
injection) 
    interface Manager { 
        Builder getBuilder(); 
    } 
    @Singleton 
    static class ManagerImpl implements Manager { 
        final Builder builder; 
        @Inject 
        ManagerImpl(Builder builder) { 
            this.builder = builder; 
        } 
        public Builder getBuilder() { 
            return builder; 
        } 
    } 
3. Create class InfoPane which depends on Manager. 
    static class InfoPane { 
        final Manager manager; 
        @Inject 
        InfoPane(Manager manager) { 
            this.manager = manager; 
        } 
    } 
4. Let's define 2 different instance of InfoPane in test app, every 
instance will have own instance of Manager, manager instance will have 
own builder instance. Will use private modules and binding with 
annotations: 
        Injector inj = Guice.createInjector(new AbstractModule() { 
            @Override 
            protected void configure() { 
                install(new PrivateModule() { 
                    protected void configure() { 
                        bind(Builder.class).to(BuilderImpl.class); 
                        bind(Manager.class).to(ManagerImpl.class); 
                        bind(InfoPane.class).annotatedWith(Names.named 
("first")).to(InfoPane.class); 
                        expose(InfoPane.class).annotatedWith 
(Names.named("first")); 
                    } 
                }); 
                install(new PrivateModule() { 
                    protected void configure() { 
                        bind(Builder.class).to(BuilderImpl.class); 
                        bind(Manager.class).to(ManagerImpl.class); 
                        bind(InfoPane.class).annotatedWith(Names.named 
("second")).to(InfoPane.class); 
                        expose(InfoPane.class).annotatedWith 
(Names.named("second")); 
                    } 
                }); 
            } 
        }); 
5. Let's get instances of "first" InfoPane and "second" and check that 
they have different instances of Manager in spite of @Singleton 
annotations: 
        InfoPane firstPane = inj.getInstance(Key.get(InfoPane.class, 
Names.named("firstPane"))); 
        InfoPane secondPane = inj.getInstance(Key.get(InfoPane.class, 
Names.named("secondPane"))); 
        final Manager firstManager = firstPane.manager; 
        final Manager secondManager =  secondPane.manager; 
        System.out.printf("Are managers the same  = %s\n", 
firstManager.equals(secondManager)); 
It's ok, both managers are different instances of ManagerImpl class. 
6. Let's check that firstManager builder is not the same instance of 
secondManager builder: 
        System.out.printf("Are builders the same  = %s\n", 
firstManager.getBuilder().equals(secondManager.getBuilder())); 
Upps, firstManager.getBuilder() is the same as secondManager.getBuilder 
(), it's one instance of BuilderImpl. 
But as I can understand, they must be the different object, in spite 
of @Singleton, because they binded in different private modules. 
It's looks like a bug. 
Full test here http://pastie.org/486289 
I tested it with binding in scope (bind(Builder.class).to 
(BuilderImpl.class).in(Scopes.SINGLETON)), it's work the same. 
I increased dependency hierachy deep (Builder depends on  Foo and 
FooImpl(@Singleton)), it's work the same.
Original issue reported on code.google.com by aleksey....@gmail.com on 22 May 2009 at 11:21
mrszj / google-guice

Private modules couldn't provide possibility to create 2 #377
