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From "Richard S. Hall" <he...@ungoverned.org>
Subject Re: SCR and compendium services
Date Thu, 03 May 2007 14:36:35 GMT
Clement Escoffier wrote:
> Hello
>
> Felix Meschberger a écrit :
>> Hi Richard,
>>
>> In Felix-277 you propose to "privatize" the ServiceTracker and make the
>> LogService package a dynamic dependency. I think, this is a good idea 
>> and
>> will, as noted in the issue, implement this.
>>
>> While doing this, there is another Compendium Service dependency in 
>> the scr:
>> Configuration Admin Service. This is a more complicated dependency 
>> because
>> scr does not only call into the ConfigurationAdmin service but also
>> registers a ManagedServiceFactory for factory components. So, if the 
>> OSGi cm
>> packages are not available, factory components will not work (and
>> configuration retrieval by other components may fail).
>>
>> What do you think of having scr export and re-import the OSGi cm 
>> package ?
>> This way, the framework would select the cm package to which other 
>> bundles
>> get wired and scr will have the OSGi cm packages regardless of 
>> whether a CM
>> implementation exporting it is available.
> It is what I do for the Log service and the Config Admin in iPOJO. It 
> increase the size of the bundle but I did not find another acceptable 
> solution.
> The pom file contains folowing BND instructions:
> <Import-Package>
>              org.osgi.framework; version="1.3",
>              org.osgi.service.cm; version="1.2",
>              org.osgi.service.log; version="1.3"
> </Import-Package>
> <Export-Package>
>              org.apache.felix.ipojo; version="0.7.1",
>                ....... (some other iPOJO packages) .....
>              org.osgi.service.cm; version="1.2",
>              org.osgi.service.log; version="1.3"
> </Export-Package>

Shouldn't BND automatically detect the versions for you from the 
packageinfo files?

-> richard
>
> Regards,
>
> Clement
>
>

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