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Date: Wed, 28 Jul 2010 17:13:18 +0000
Subject: Re: Comment on UntargettedBindings in google-guice
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Comment by drew.mclaughlin:

No.

An untargetted binding simply tells the injector that whenever an instance  
of MyConcreteClass is requested it should create one and inject it. Whereas  
the provides method tells the injector that this method should be invoked  
whenever an instance of MyConcreteClass is requested and use the returned  
value to inject.

The key difference is that the instance will be created by Guice in one  
case and by your code in the other. There are a few things that will only  
work for instance created by Guice - AOP method interception being the main  
one.

In general I'd recommend that you only use provider methods when you've got  
non-trivial logic required to create the instance. Usually this means that  
you'll have a non-zero number of parameters to the provider method that  
you'd use to create the instance.


For more information:
http://code.google.com/p/google-guice/wiki/UntargettedBindings