Re: [equinox-dev] Working with ConfigAdmin service

[Simon J Archer <sarcher@xxxxxxxxxx>]

Ali,

I think the problem you're having is
one of ordering.  If your bundle starts before the ConfigurationAdmin
service is registered then you're not going to find it. This is not a problem
and is part of how OSGi works. There are a number of solutions:

1. Use Declarative Services (DS). This
is by far the easiest approach since it removes the ordering problem entirely.
I strongly recommend that you use DS.

2. Use the ServiceTracker to track the
ConfigurationAdmin service.  This works in theory, but in practice
is way harder to get right than you might imagine.

3. Register a ServiceListener to track
the ConfigurationAdmin service. This also works in theory, but in practice
is more work that you'd care to do.  It's debatable whether this is
easier or harder than using the ServiceTracker.

See the attached zip that shows how
to use DS to acquire a ConfigurationAdmin service.



I hope this helps,

Simon

From:	Ali Naddaf <ali@xxxxxxxxxx>
To:	Equinox development mailing list <equinox-dev@xxxxxxxxxxx>
Date:	09/28/2009 07:41 PM
Subject:	[equinox-dev] Working with ConfigAdmin service
Sent by:	equinox-dev-bounces@xxxxxxxxxxx

---

Hello everyone.

I am trying to write a few simple examples with ConfigurationAdmin 
service to familiarize myself with it but have a difficulty obtaining a
pointer to the service. I am running Equinox 3.5 and have deployed 
org.eclipse.equinox.cm_1.0.100 bundle in my framework but still when I
try to get a reference to the ConfiguartionAdmin (via 
context.getServiceReference(ConfigurationAdmin.class.getName()) ), I get
a null pointer. Do I need to set any particular security settings?

Many thanks,
Ali.
_______________________________________________
equinox-dev mailing list
equinox-dev@xxxxxxxxxxx
https://dev.eclipse.org/mailman/listinfo/equinox-dev

Attachment: cm.user.ds.zip
Description: Zip archive