Whoops, evidence not erased completely
enough!
That config.ini line should read:
org.osgi.framework.system.packages.extra=com.cra.myservice
-Mike
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From:
equinox-dev-bounces@xxxxxxxxxxx [mailto:equinox-dev-bounces@xxxxxxxxxxx] On Behalf Of Michael
Furtak
Sent: Wednesday, August 19, 2009
4:33 PM
To: Equinox
development mailing list
Subject: RE: [equinox-dev]
Bridging the plain Java and OSGi classloading worlds
Hi Hal,
Thanks for those references. They were
helpful. It feels like I’m close, but problems remain.
Also, I’m a bit confused as to
whether the noted techniques can help my problem. My understanding of the
system packages and boot delegation stuff is that it helps OSGi find classes
that are not explicitly exported from any of the OSGi bundles (i.e. java.*,
javax.* stuff, etc.)
My dilemma is somewhat the opposite.
I’m originating from Java, outside of the OSGi environment, but want to
call objects created inside of OSGi. Of course, this leads to a
ClassCastException when I get the service object and try to refer to it by its
interface as loaded in Java land.
I’ve attached my source w/ some
class/package names changed to protect the innocent. Also attached is my
config.ini file. Without the org.osgi.framework.system.packages.extra
directive, the ClassCastException occurs. With it, I don’t get a callback
on my ServiceTrackerCustomizer’s addedService() method.
Do you have any further thoughts?
Thanks in advance,
-Mike
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From: equinox-dev-bounces@xxxxxxxxxxx
[mailto:equinox-dev-bounces@xxxxxxxxxxx] On
Behalf Of Hal Hildebrand
Sent: Wednesday, August 19, 2009
3:18 PM
To: Equinox development mailing list
Subject: Re: [equinox-dev]
Bridging the plain Java and OSGi classloading worlds
You can also check out: http://felix.apache.org/site/apache-felix-framework-launching-and-embedding.html
note the section "Creating and Configuring the
Framework Instance", and the use of the property
"org.osgi.framework.system.packages.extra" which makes this a bit
easier. Works the same way with Equinox.
On Aug 19, 2009, at 12:13 PM, Hal Hildebrand wrote:
Sure. See http://blog.springsource.com/2009/01/19/exposing-the-boot-classpath-in-osgi/
for an in depth discussion by Costin of SS.
On Aug 19, 2009, at 12:08 PM, Michael Furtak wrote:
Thanks very much for your reply. I’m
heartened that you’re confident in this possibility. Is there any
documentation for the option you mention that I can refer to?
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sure, you just have to have a class loader
in common. The way this would work is to modify the exports of the System
bundle (an option when starting the framework in Equinox) to export the classes
from the base class path you need. Then there is no class loader issues,
as they're both using the same.
On Aug 19, 2009, at 11:56 AM, Michael Furtak wrote:
I am using the
EclipseStarter.startup(…) method to bring up the Equninox framework from
within a plain ol’ Java application. My question is this:
Is it possible to allow the plain
ol’ Java environment to get and call service objects from the OSGi side?
I know their respective classloader environments are disjoint, but is there any
hope at all of bridging them? Has anyone been dumb/crazy enough to want to do
this?
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