Re: [equinox-dev] same bundle in multiple regions

[Borislav Kapukaranov <b.kapukaranov@xxxxxxxxx>]

I see. That sounds reasonable, thanks for the explanation!

I was looking from a too mixed framework/region perspective while it should really be stressed that the regions build on top of the framework behavior rather than change it.

Thanks

Bobby

2011/9/23 Thomas Watson <tjwatson@xxxxxxxxxx>

BJ is correct. Just to elaborate. The framework enforces an invariant that ensures all bundles installed in the Framework have a unique bundle location string. Regions, hooks, etc. cannot do anything to break this enforced invariant.

If you use the Region.installBundle method it will modify the location string to ensure it is unique on installation. It does this by appending a URI fragment to the input location which includes the region name. For example, the location string file://bundles/mybundle.jar becomes file://bundles/mybundle.jar#region1 if the region name is region1. You should do the something similar if you are not going through the Region API to install the bundles.

Tom



BJ Hargrave---09/23/2011 06:18:40 AM---You can install the same bundle (same bits) using different locations strings. But a location string is a unique identifier for

From:	BJ Hargrave/Austin/IBM@IBMUS
To:	Equinox development mailing list <equinox-dev@xxxxxxxxxxx>,
Date:	09/23/2011 06:18 AM
Subject:	Re: [equinox-dev] same bundle in multiple regions

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You can install the same bundle (same bits) using different locations strings. But a location string is a unique identifier for an installed bundle. Use the 2 argument version of BundleContext.installBundle using unique location strings to install a bundle from the same URL multiple times.
--

BJ Hargrave Senior Technical Staff Member, IBM OSGi Fellow and CTO of the OSGi Alliance hargrave@xxxxxxxxxx

office: +1 386 848 1781 mobile: +1 386 848 3788

From: Borislav Kapukaranov <b.kapukaranov@xxxxxxxxx>
To: equinox-dev@xxxxxxxxxxx,
Date: 2011/09/23 06:58
Subject: [equinox-dev] same bundle in multiple regions
Sent by: equinox-dev-bounces@xxxxxxxxxxx

---

Hey folks,

I have a question on installing a bundle from the same location.
Take the latest Virgo 3.0.x as a good example of more than one region and connect with telnet to each console.
If you try to install a bundle from the same location in both regions via each region's console this will fail with something like "Bundle already installed...".

Is this working as designed? Shouldn't it be possible to install a bundle from the same location(same string) if it's in different regions - Equinox may treat it as a different bundle and create it its own data folder, id, etc?
http://dev.eclipse.org/mhonarc/lists/equinox-dev/msg06875.html suggest that should be possible, as the first installation won't be visible to the context of the other region.

Thanks,
Bobby_______________________________________________
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