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

org.osgi.framework.BundleContext.addServiceListener()
Adds the specified {@code ServiceListener} object with the specified{@code filter} to the context bundle's list of listeners. See{@link Filter} for a description of the filter syntax.{@code ServiceListener} objects are notified when a service has alifecycle state change.
If the context bundle's list of listeners already contains a listener {@code l} such that {@code (l==listener)}, then this method replaces that listener's filter (which may be {@code null}) with the specified one (which may be {@code null}).
The listener is called if the filter criteria is met. To filter based upon the class of the service, the filter should reference the {@link Constants#OBJECTCLASS} property. If {@code filter} is {@code null}, all services are considered to match the filter.
When using a {@code filter}, it is possible that the {@code ServiceEvent}s for the complete lifecycle of a service will not be delivered to the listener. For example, if the {@code filter} only matches when theproperty {@code x} has the value {@code 1}, the listener will not be called if the service is registered with the property {@code x} not setto the value {@code 1}. Subsequently, when the service is modified setting property {@code x} to the value {@code 1}, the filter will match and the listener will be called with a {@code ServiceEvent} of type{@code MODIFIED}. Thus, the listener will not be called with a {@code ServiceEvent} of type {@code REGISTERED}.
If the Java Runtime Environment supports permissions, the {@code ServiceListener} object will be notified of a service event onlyif the bundle that is registering it has the {@code ServicePermission} toget the service using at least one of the named classes the service was registered under. @param listener The {@code ServiceListener} object to be added. @param filter The filter criteria. @throws InvalidSyntaxException If {@code filter} contains an invalidfilter string that cannot be parsed. @throws IllegalStateException If this BundleContext is no longer valid. @see ServiceEvent @see ServiceListener @see ServicePermission

            ServiceListener listener = new ServiceListener() {
                public void serviceChanged(ServiceEvent event) {
                    commands.clear();
                }
            };
            context.addServiceListener(listener,
                    String.format("(&(%s=*)(%s=*))",
                            CommandProcessor.COMMAND_SCOPE,
                            CommandProcessor.COMMAND_FUNCTION));
        }
    }

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            // Register the JNDI service listener
            jndiServiceListener = new JNDIServiceListener(syscontext);
            try {
                String filter = "(" + Constants.OBJECTCLASS + "=" + ObjectFactory.class.getName() + ")";
                syscontext.addServiceListener(jndiServiceListener, filter);
            } catch (InvalidSyntaxException e) {
                // ignore
            }


            // Register the socket-binding services

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            BundleContext bundleContext = createMock(BundleContext.class);
            ServiceRegistration registration = createMock(ServiceRegistration.class);
            Manager manager = new Manager(bundleContext, curator, "tcp://localhost:" + serverPort, "localhost", TimeUnit.MINUTES.toMillis(5));


            bundleContext.addServiceListener(manager, "(service.exported.interfaces=*)");
            expect(bundleContext.getProperty("org.osgi.framework.uuid")).andReturn("the-framework-uuid");
            expect(bundleContext.registerService(
                    EasyMock.<String[]>anyObject(),
                    same(manager),
                    EasyMock.<Dictionary>same(null))).andReturn(registration);

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            ServiceListener listener = new ServiceListener() {
                public void serviceChanged(ServiceEvent event) {
                    commands.clear();
                }
            };
            context.addServiceListener(listener,
                    String.format("(&(%s=*)(%s=*))",
                            CommandProcessor.COMMAND_SCOPE,
                            CommandProcessor.COMMAND_FUNCTION));
        }
    }

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                    synchronized (CommandsCompleter.this) {
                        commands.clear();
                    }
                }
            };
            context.addServiceListener(listener,
                    String.format("(&(%s=*)(%s=*))",
                            CommandProcessor.COMMAND_SCOPE,
                            CommandProcessor.COMMAND_FUNCTION));
        }
    }

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