Question

I have a bunch of entity type factories that derive from a common, generic interface. For instance,

public class ConnectionFactory implements IEntityFactory<Connection> { ... }

I’d like to use Google-Guice to break hard dependencies on these factories.

However, there’s a syntax error when I try to configure Guice:

public class EntityFactoryModule extends AbstractModule {
    @Override
    protected void configure() {
        bind(IEntityFactory<Connection>.class).to(ConnectionFactory.class);
    }
}

Eclipse says “IEntityFactory cannot be resolved to a variable.”

Can someone please help me understand why this doesn’t work? Also, is there an alternate syntax that will work?

Answer 1

My Guice-fu is generally limited, but I think you want a type literal here:

bind(new TypeLiteral<IEntityFactory<Connection>>() {})
    .to(ConnectionFactory.class);