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https://issues.apache.org/jira/browse/KARAF-1009?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13156439#comment-13156439
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David Jencks commented on KARAF-1009:
-------------------------------------
I just set up a github branch called "region". It has an additional commit
that looks for a manifest header "Region" and if present installs the bundle
into the named region.
> equinox Region support
> ----------------------
>
> Key: KARAF-1009
> URL: https://issues.apache.org/jira/browse/KARAF-1009
> Project: Karaf
> Issue Type: Improvement
> Components: karaf-core
> Affects Versions: 3.0.0
> Reporter: David Jencks
> Assignee: David Jencks
> Attachments: KARAF-1009.diff
>
>
> Build instructions:
> After applying the patch, run
> mvn -Pfetch-external
> in the /region module to download the region jar from eclipse and install it
> in your local maven repo. Then build karaf as usual (itests will fail).
> Virgo and the subsystem RI (under development) use the equinox region jar for
> isolation in R43 frameworks. Subsystem provides a convenient way to set up
> some isolation containers but is much less general than the regions jar or
> model allow for. It might be useful both before subsystems is available and
> to provide the additional flexibility to integrate region based isolation in
> karaf.
> the attached patch implements isolation and provides some minimal
> administration commands. Set up the desired region model in
> etc/regions-config.xml. The available commands are:
> region:info shows the structure of the regions and which region each bundle
> is in
> region:addbundle moves a bundle from one region (probably the root) to the
> specified region
> region:addfilter creates a filter between regions. AFAICT once created a
> filter cannot be modified.
> region:addregion adds a region
> the model in regions-config.xml is installed only on first startup:
> subsequent modifications will have no effect without a clean start.
> The "from" and "to" regions for a filter match the region api but seem
> backwards to me: a filter from R1 to R2 lets the stuff allowed by the filter
> in R2 be visible to R1.
> Generally the practical way to install bundles into a region is to specify
> the (new) "region" attribute on a feature. I've set up the jpa and jndi
> features to install into the application region included as an example.
> Previously I've modified the aries 0.4-SNAPSHOT util jar to include a
> recursive bundle tracker that will let the blueprint extender find blueprint
> bundles in all regions no matter how isolated so the jpa blueprint config
> should get created. If it doesn't check that your aries util bundle is up to
> date.
> As a convenience, filters to the region containing bundle 0 (the framework)
> allow everything exported by the framework.
> Currently the itests fail, I think because the new methods on R43 Bundle are
> hidden by a R4.2 framework api jar earlier on the classpath somewhere in
> pax-*. I'm hoping someone who knows how pax-* works can look into this.
>
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