Examples of javax.naming.event.EventContext

javax.naming.event.EventContext
This interface is for registering and deregistering to receive events about objects that are bound in a context.
Listeners register an interest in a target object or objects. The context might not yet have a binding for the target, and it is optional whether a context will support registering for events about an object that is not bound. If the context does not support it then addNamingListener() should throw a NameNotFoundException. Alternatively, if this is not possible, the EventContext should send the listener a NamingExceptionEvent with the information. A NamingExceptionEvent is also used to notify listeners who have registered interest in a target that is subsequently deleted, if the context only allows registration for currently bound objects.

Listeners can register for events affecting the context itself, which as usual is referred to by the empty name.

When a listener receives a NamingExceptionEvent it is deregistered.

When Context.closed is called on an EventContext, all of its listeners are deregistered.

Listener implementations may choose to implement more than one sub-interface of NamingListener, in order to be notified of more than one type of event.

Event context implementations are not expected to be thread safe.

      env.setProperty("java.naming.factory.url.pkgs", "org.jnp.interfaces");
      InitialContext ic = new InitialContext(env);
      log.info("Created InitialContext");
      Context ctx = (Context) ic.lookup("");
      assertTrue("Context is an EventContext", ctx instanceof EventContext);
      EventContext ectx = (EventContext) ctx;
      ectx.addNamingListener("", EventContext.ONELEVEL_SCOPE, listener);
      log.info("Added NamingListener");
      ctx.bind("testAddObject", "testAddObject.bind");
      assertTrue("Saw bind event", listener.waitOnEvent());
      NamingEvent event = listener.getEvent(0);
      assertEquals("OBJECT_ADDED", NamingEvent.OBJECT_ADDED, event.getType());

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      env.setProperty("java.naming.factory.url.pkgs", "org.jnp.interfaces");
      InitialContext ic = new InitialContext(env);
      log.info("Created InitialContext");
      Context ctx = (Context) ic.lookup("");
      assertTrue("Context is an EventContext", ctx instanceof EventContext);
      EventContext ectx = (EventContext) ctx;
      ectx.addNamingListener("", EventContext.SUBTREE_SCOPE, listener);
      log.info("Added NamingListener");
      ctx.bind("testAddObject", "testAddObject.bind");
      assertTrue("Saw bind event", listener.waitOnEvent());
      NamingEvent event = listener.getEvent(0);
      assertEquals("OBJECT_ADDED", NamingEvent.OBJECT_ADDED, event.getType());

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            assert configFile != null;


            initializeEngine(configFile.getContent().toString());


            if (nameCtx instanceof EventContext) {
                EventContext evtCtx = (EventContext)nameCtx;


                NamespaceChangeListener listener = new NamespaceChangeListener() {


                    public void namingExceptionThrown( NamingExceptionEvent evt ) {
                        evt.getException().printStackTrace();
                    }


                    public void objectAdded( NamingEvent evt ) {
                    }


                    public void objectRemoved( NamingEvent evt ) {
                        Object oldObject = evt.getOldBinding().getObject();
                        if (!(oldObject instanceof JcrEngine)) return;


                        JcrEngine engine = (JcrEngine)oldObject;


                        log.info(JcrI18n.engineStopping);
                        long start = System.currentTimeMillis();
                        engine.shutdown();
                        try {
                            engine.awaitTermination(30, TimeUnit.SECONDS);
                            log.info(JcrI18n.engineStopped, (System.currentTimeMillis() - start));
                        } catch (InterruptedException ie) {
                            // Thread.interrupted();
                        }
                    }


                    public void objectRenamed( NamingEvent evt ) {
                    }


                };


                evtCtx.addNamingListener(name, EventContext.OBJECT_SCOPE, listener);
            }
        }


        assert engine != null;

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      env.setProperty("java.naming.factory.url.pkgs", "org.jnp.interfaces");
      InitialContext ic = new InitialContext(env);
      log.info("Created InitialContext");
      Context ctx = (Context) ic.lookup("");
      assertTrue("Context is an EventContext", ctx instanceof EventContext);
      EventContext ectx = (EventContext) ctx;
      ectx.addNamingListener("", EventContext.ONELEVEL_SCOPE, listener);
      log.info("Added NamingListener");
      ctx.bind("testAddObject", "testAddObject.bind");
      assertTrue("Saw bind event", listener.waitOnEvent());
      NamingEvent event = listener.getEvent(0);
      assertEquals("OBJECT_ADDED", NamingEvent.OBJECT_ADDED, event.getType());

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      env.setProperty("java.naming.factory.url.pkgs", "org.jnp.interfaces");
      InitialContext ic = new InitialContext(env);
      log.info("Created InitialContext");
      Context ctx = (Context) ic.lookup("");
      assertTrue("Context is an EventContext", ctx instanceof EventContext);
      EventContext ectx = (EventContext) ctx;
      ectx.addNamingListener("", EventContext.SUBTREE_SCOPE, listener);
      log.info("Added NamingListener");
      ctx.bind("testAddObject", "testAddObject.bind");
      assertTrue("Saw bind event", listener.waitOnEvent());
      NamingEvent event = listener.getEvent(0);
      assertEquals("OBJECT_ADDED", NamingEvent.OBJECT_ADDED, event.getType());

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Related Classes of javax.naming.event.EventContext

org.jboss.dna.jcr.JndiRepositoryFactory

org.jnp.test.NamingEventsUnitTest

org.wso2.carbon.utils.multitenancy.CarbonContextHolder$CarbonInitialJNDIContext

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