[news.eclipse.technology.ecf] Re: Problem understand - "Discovery of Rem

[neerajbhusare@xxxxxxxxx (Neeraj )]

Hi Scott,
       Thanks for the reply. Please find my comments below.

Scott Lewis wrote:

> Hi Neeraj,

> This can happen for a number of reasons (i.e. no IDiscoveryService 
> instances are found), but a common reason is that no provider bundle is 
> available/started.

> Could this be the case with your configuration?  i.e. do you have either 
> or both of the bundles:

> org.eclipse.ecf.provider.jmdns (zeroconf)
> org.eclipse.ecf.provider.jslp (slp)

> installed in your target platform?  You need at least one of these, 
> along with org.eclipse.ecf.discovery to have an IDiscoveryService 
> available via the service tracker.

I do have the org.eclipse.ecf.Discovery bundle installed. Based on your 
suggestion, I included the other two - *.provider.jmnds and 
*.provider.jspl in the target platform, but I still get a null value for 
the IDiscoveryService instance. 
Secondly, I tried the P2 Discovery example, and it seems to be working 
fine.
Unlike the earlier example, this one only imports specific packages that 
are required. 

> Thanks.  Do let us know if this solves your problem...if not we'll 
> attempt to help in other ways.  

I would be happy to know the other ways in which this problem can be 
solved.

BTW, you might be interested in the slides (available after) from the talk 
given tomorrow at ESE 2008: 
http://www.eclipsecon.org/summiteurope2008/sessions?id=89.

Ya sure. I am interested and looking forward to have a look at the slides. 

> Thanks,

> Scott

Thanks,
Neeraj Bhusare

> Neeraj wrote:
> > Hello All,
> > I am trying to understand the Discovery of Remote 
> > Services(http://wiki.eclipse.org/Discovery_of_Remote_Services) example, 
> > but I am facing a problem running the same. Problem mentioned below.
> >
> > Problem:On running the org.eclipse.ecf.remoteservices.server, the 
> > service tracker returns a null value for the discovery service. 
> > org.eclipse.core.runtime.AssertionFailedException: null argument:
> > at org.eclipse.core.runtime.Assert.isNotNull(Assert.java:86)
> > at org.eclipse.core.runtime.Assert.isNotNull(Assert.java:74)
> > at 
org.eclipse.ecf.internal.examples.remoteservices.server.DiscoverableServer.start(DiscoverableServer.java:94) 
> > at 
org.eclipse.ecf.internal.examples.remoteservices.server.DiscoverableServer.start(DiscoverableServer.java:112) 
> > at 
org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:193) 
> > at 
org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:110) 
> > at 
org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:79) 
> > at 
org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:382) 
> > at 
org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:179) 
> > at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> > at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
> > at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
> > at java.lang.reflect.Method.invoke(Unknown Source)
> > at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:549)
> > at org.eclipse.equinox.launcher.Main.basicRun(Main.java:504)
> > at org.eclipse.equinox.launcher.Main.run(Main.java:1236)
> > at org.eclipse.equinox.launcher.Main.main(Main.java:1212)
> >
> > I am using Eclipse Ganymede and the latest ECF plugins.
> >
> > It would be nice if someone could point me in the right direction.
> > Thanks in Advance.
> >
> > Regards,
> > Neeraj Bhusare.