Hi,

I just started looking at Guice to see if it can meet some requirements for 
a library I maintain. Assume a jar that describes some interfaces, 
core.jar. The implementations of the interfaces will be contained in a 
separate jar. There will be several jars that include the implementations, 
one for each customer (implA.jar, implB.jar ...). The users of the library 
will include one and only one of the implementation jars in their 
applications. The implementation jars contain proprietary data so only one 
implementation jar will be delivered with the application.

My question is how to perform binding when the api jar will know nothing 
about the implementations. I've looked at the docs about Providers and 
Modules, but I'm not seeing how binding occurs from the implementation 
side. 

I've considered using a property or environment variable to indicate the 
customer and then using that to map to an implementation class name, and 
then using the name to get the class, but that seems like it's defeating 
the purpose of Guice/DI.

Any thoughts are welcome. Thanks.

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