Examples of org.osgi.framework.BundleContext.ungetService()

org.osgi.framework.BundleContext.ungetService()
Releases the service object for the service referenced by the specified {@code ServiceReference} object. If the context bundle's use count forthe service is zero, this method returns {@code false}. Otherwise, the context bundle's use count for the service is decremented by one.
The service object must no longer be used and all references to it should be destroyed when a bundle's use count for the service drops to zero.
The following steps are required to release the service object:
1. If the context bundle's use count for the service is zero or the service has been unregistered, {@code false} is returned.
2. The context bundle's use count for the service is decremented by one.
3. If the context bundle's use count for the service is now zero and the service has {@link Constants#SCOPE_BUNDLE bundle} or{@link Constants#SCOPE_PROTOTYPE prototype} scope, the{@link ServiceFactory#ungetService(Bundle,ServiceRegistration,Object)}method is called to release the service object for the context bundle.
4. {@code true} is returned.
@param reference A reference to the service to be released. @return {@code false} if the context bundle's use count for the serviceis zero or if the service has been unregistered; {@code true}otherwise. @throws IllegalStateException If this BundleContext is no longer valid. @throws IllegalArgumentException If the specified{@code ServiceReference} was not created by the same frameworkinstance as this {@code BundleContext}. @see #getService(ServiceReference) @see ServiceFactory

            
            @Override
            public Object addingService(ServiceReference reference) {
                Object service = bc.getService(reference);
                if(StanbolNamespacePrefixService.this.equals(service)){//we need not to track this instance
                    bc.ungetService(reference);
                    return null;
                }
                __sortedProviderRef = null;
                return service;
            }

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        context.addServiceListener(new ServiceListener() {
            public void serviceChanged(final ServiceEvent event) {
                final ServiceReference sr = event.getServiceReference();
                final String className = getClassName(sr, myContext);
                if (sr != null) {
                    myContext.ungetService(sr);
                }
                if (className == null) {
                    // Something went wrong
                    return;
                }

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        } catch (InvalidSyntaxException e) {
            LOGGER.error("Syntax error looking up service {} using filter {}", EventHandler.class.getName(), EventHandler.MANAGED_FILTER);
        } finally {
            if (references != null) {
                for (ServiceReference ref : references) {
                    bundleContext.ungetService(ref);
                }
            }
        }
        return result;
    }

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                LogUtil.debug(PluginManager.class.getName(), " plugin classloader: " + obj.getClass().getClassLoader());
                LogUtil.debug(PluginManager.class.getName(), " current classloader: " + Plugin.class.getClassLoader());
                if (isPlugin) {
                    plugin = (Plugin) obj;
                }
                context.ungetService(sr);
            }
        } catch (Exception ex) {
            LogUtil.error(PluginManager.class.getName(), ex, "");
            throw new PluginException("Plugin " + name + " could not be retrieved", ex);
        }

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                    LogUtil.debug(PluginManager.class.getName(), " bundle service: " + sr);
                    Object obj = context.getService(sr);
                    if (obj instanceof Plugin) {
                        list.add((Plugin) obj);
                    }
                    context.ungetService(sr);
                }
            }
        }
        return list;
    }

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        BundleContext context = felix.getBundleContext();
        ServiceReference sr = context.getServiceReference(name);
        if (sr != null) {
            try {
                sr.getBundle().stop();
                context.ungetService(sr);
                result = true;
            } catch (Exception ex) {
                LogUtil.error(PluginManager.class.getName(), ex, "");
            }
        }

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            try {
                Bundle bundle = sr.getBundle();
                bundle.stop();
                bundle.uninstall();
                String location = bundle.getLocation();
                context.ungetService(sr);


                // delete location
                if (deleteFile) {
                    File file = new File(new URI(location));
                    boolean deleted = file.delete();

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                try {
                    if (target instanceof Function) {
                        function = (Function) target;
                    }
                } finally {
                    context.ungetService(reference);
                }
            }
        } catch (Throwable t) {
        }
        return function;

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        if(bc != null){
            trackedServiceCount--;
            if(trackedServiceCount == 0 && engineRegistration != null){
               engineRegistration.unregister();
            }
            bc.ungetService(reference);
        }
    }
}

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        BundleContext context = PortfolioPlugin.getDefault().getBundle().getBundleContext();
        ServiceReference<?> reference = context.getServiceReference(name);
        if (reference == null)
            return null;
        Object result = context.getService(reference);
        context.ungetService(reference);
        return type.cast(result);
    }


    private void loadRepository(IProvisioningAgent agent) throws CoreException
    {

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