Andrea

Keep in mind, when you perform a refresh using PackageAdmin there is a 
chance that the bundles that depend upon packaged exported by an 
uninstalled bundle will become INSTALLED. So consider installing the 
replacement bundles before performing the refresh.  This problem is one of 
the reasons why I recommend that people minimize package dependencies 
between bundles.  Ideally a bundle has zero package dependencies, but 
that's often not realistic.  If you are going to depend upon a package, 
it's best to depend upon packages of interfaces or simple data-type 
classes that will rarely change.  Ideally you have no dependencies on 
packages containing interface/service implementations. You should consider 
using services to create loosely coupled, and dynamic, dependencies upon 
implementation classes. Bundles that provide services can be freely 
installed and uninstalled without having to perform any refreshing since 
the OSGi service registry and/or Declarative Services take care of 
notifying dependents of service changes.

These things are covered extensively here: http://equinoxosgi.org/ 

Thanks

Simon



From:
Andrea Zoppello <[email protected]>
To:
OSGi - Dev <[email protected]>
Date:
07/29/2010 06:42 AM
Subject:
[osgi-dev] A question about UNINSTALL Operation...
Sent by:
[email protected]



Hi All,

I've a question about uninstalling bundles.

Suppose i've a simple situation where i've two bunldes "A" and "B" and
B is importing some packages from bundle "A".

My doubt is about "what should" happens to the state of  "B" when i'm 
going
to uninstall bundle "A".

I was ( wrongly ) thinking that the container had automatically  put B in
"INSTALLED" state, because A was uninstalled.

But i discovered that this would not happen ( at least with equinox) until 
i
do a refresh???

So the question is, which is the right behaviour of the OSGi container 
in that case??
Should i need a refresh anyway??

Thx
Andrea


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