>> 
>>  
> That's what I was thinking, first make all the versioning information 
> available in metadata.  The first potential OSGi service I can see is for the 
> net.jini.security.policy.DynamicPolicyProvider.
> 
> I'm currently reimplementing DynamicPolicyProvider for concurrency, in doing 
> so however it creates a dependency on Java 5.  I'd like to keep the earlier 
> implementation for memory constrained or embedded environments such as Java 
> 1.4 SE or cdc.  So the DynamicPolicyProvider would be a good start.  Although 
> I'm currently doing this using ServiceLoader SPI.

Why would versioning information aide in the loading of a 
DynamicPolicyProvider? Why would you want to introduce an entire new technology 
into the stack when you can use something as simple as the ServiceLoader to 
obtain a DynamicPolicyProvider?


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