Re[2]: [equinox-dev] Embedding Equinox OSGi and EclipseStarter

[Peter Kriens <Peter.Kriens@xxxxxxxxx>]

JM> http://wiki.eclipse.org/index.php/Equinox_FrameworkAdmin
Does this not have an overlap or at least touches on the Initial
Provisioning service in R4?

Kind regards,

     Peter Kriens


JM>  
JM> Jeff 
JM>  
JM>  
JM>    Jason Sankey <jason@xxxxxxxxxx>  
JM> Sent by: equinox-dev-bounces@xxxxxxxxxxx 
JM> 02/05/2007 06:55 PM 
JM>    
JM> Please respond to
JM>  Equinox development mailing list <equinox-dev@xxxxxxxxxxx>
JM>  
JM>      
JM> To
JM>  Equinox development mailing list <equinox-dev@xxxxxxxxxxx>   
JM> cc
JM>     
JM> Subject
JM>  Re: [equinox-dev] Embedding Equinox OSGi and EclipseStarter 
JM>      
JM>  
JM>  
JM>  
JM> Hi Alex,
JM>  
JM>  My responses inline.
JM>  
JM>  Alex Blewitt wrote:
 >> I've been playing around with embedding the OSGi/Equinox platform into
 >> an existing Java system (as opposed to the other way around). I'm
 >> using the EclipseStarter to bring up the framework, and once it's up
 >> and running with the bundles it works like a charm. I can start up a
 >> remote console and reconfigure it if necessary etc.
JM>  
JM>  This is exactly what we are doing at the moment (i.e. embedding Equinox).
JM>  
 >> What I'd really like to do is give some control over to the Java
 >> system that contains it, particularly with reference to installing new
 >> bundles, starting and stopping existing bundles and so forth. All I'd
 >> need to do is get hold of a suitable BundleContext and I should be
 >> able to do this.
 >> 
 >> Unfortunately, there doesn't seem to be any way of getting this back
 >> from an EclipseStarter. I could duplicate the code but it seems
 >> somewhat wasteful; there's an OSGi instance in EclipseStarter that has
 >> a getBundleContext() that would probably do me, if it weren't for the
 >> fact that OSGi is a private field of EclipseStarter.
JM>  
JM>  How are you starting the framework?  We use EclipseStarter.startup, 
JM>  which returns the BundleContext from the static OSGi instance.  This 
JM>  sounds like exactly what you need.
JM>  
 >> I'm wondering whether you think it's a good idea to add something like
 >> this to EclipseStarter:
 >> 
 >> public static BundleContext getSystemBundleContext() {
 >>  return osgi.getBundleContext();
 >> }
JM>  
JM>  This addition probably also wouldn't hurt.
JM>  
 >> I'd then be able to use that to stop/start the various bundles,
 >> install others etc. Of course, whilst I can do this via the console, I
 >> really want to have a programmatic hook up to make it work. And no, I
 >> can't refactor the old system to be a bundle of the Equinox runtime;
 >> this is strictly a subset of an existing system.
JM>  
JM>  Yep, we use this context to (un)install and start bundles from our own
JM>  PluginManager.
JM>  
 >> I note that other places do this kind of thing e.g. the servlet
 >> bridge, which maps a URL onto commands that get processed. I'm
 >> wondering if the direct way has some obvious flaw that I'm missing?
JM>  
JM>  
JM>  Hope that helps,
JM>  Jason
JM>  
JM>  --
JM>  Jason Sankey
JM>  http://zutubi.com/
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