Issue 249: NPE in
com.google.inject.ProviderToInternalFactoryAdapter$1.call()
http://code.google.com/p/google-guice/issues/detail?id=249
Comment #4 by tonyandpat:
As mentioned above, for an "AbstractModule" subclass this is equivalent to
bind(PermanentRedirect.class)
.annotatedWith(Names.named("RedirectMain"))
.in(Scopes.SINGLETON);
This is not a problem with Scopes.SINGLETON, but rather that the provider
passed into
the scope is a "ProviderToInternalFactoryAdapter" with a null
internalFactory.
The same thing without the annotation does work OK:
bind(PermanentRedirect.class)
.in(Scopes.SINGLETON);
So it seems that this is a bug.
As a work-around, you may want something like this:
bind(PermanentRedirect.class)
.annotatedWith(Names.named("RedirectMain"))
.to(PermanentRedirect.class)
.in(Scopes.SINGLETON);
However, that also produces an error. The one work-around I have found that
does work
is as follows:
bind(PermanentRedirect.class)
.annotatedWith(Names.named("RedirectMain"))
.to(new TypeLiteral<PermanentRedirect>() {})
.in(Scopes.SINGLETON);
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