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PackageAdmin.refreshPackages() - bundle graph calculation when fragment bundles are installed [message #636829]

Wed, 03 November 2010 02:06

Lindsay Smith

Messages: 6
Registered: October 2010

Junior Member

I'd like some details about how equinox calculates which bundles need to be stopped and started again when fragment bundles are installed.

Lets say that the following bundles are currently installed and started:

com.foo.bar - version 1.0
com.foo.bar - version 1.1

So thats two bundles with the same symbolic name but different versions.

Lets say that I install a fragment bundle with the following header:

Fragment-Host: com.foo.bar;bundle-version=[1.1,1.1]

In order to attach the fragment, I call refreshPackages(), passing in the com.foo.bar:1.1 bundle reference.

The question is - how does equinox determine the bundles that need to be re-resolved in this case?

In my experience, equinox stops and starts both com.foo.bar bundles, not just the one that is indicated by the bundle-version header. Is this behaviour expected?

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Re: PackageAdmin.refreshPackages() - bundle graph calculation when fragment bundles are installed [message #637026 is a reply to message #636829]

Wed, 03 November 2010 19:56

Thomas Watson

Messages: 503
Registered: July 2009

Senior Member

In Equinox when you refresh a bundle with a particular symbolic name we also pull in other versions of the bundle with the same symbolic name. This has historically been done to ensure optimal singleton selection when re-resolving. Also see https://bugs.eclipse.org/bugs/show_bug.cgi?id=169593 for more details.

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