Comment by orlando....@gmail.com:
I saw this code in a Misko Hevery's presentation: "Conditionals VS
Polymorphism. He explains how to create a provider that selects between two
types of update based on the state of the variable isI18N. He is injecting
that value in the provider definition. However, what I can't see is where
that value comes from? it is injected into the provider but where the value
is? In a Module?
Java? Use Guice!
{{{
class UpdateProvider implements Provider<Update> {
@Inject Provider<I18NUpdate> i18n;
@Inject Provider<NonI18NUpdate> ni18n;
@Inject @Named("i18n_ENABLED") boolean isI18N;
Update get() {
return isI18N ? i18n.get() : ni18n.get();
}
}
}}}
For more information:
http://code.google.com/p/google-guice/wiki/InjectingProviders
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