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Observe Thingworx Property Change with Java SDK

Level 1

Observe Thingworx Property Change with Java SDK

Hi all,

I'd like to observe a specific property of my Thingworx Thing via Java SDK. Therefore I've created a Thingworx Client, which is connected to Thingworx. After this, I've created a Virtual Thing with my Thingname and added a propertyChangeListener. Unfortunately, the listener does not get fired, as soon as I change the property in Thingworx. Does anyone know where's the problem or where to find an example for this?

Here's my Code Snippet:

ClientConfigurator config = new ClientConfigurator();

config.setUri("http://xxx.xxx.xxx.xxx:8080/Thingworx/WS");

config.setAppKey("xxx");

config.ignoreSSLErrors(true);

try {

  TwxClient client = new TwxClient(config);

  client.start();

  boolean isConnected = client.waitForConnection(30000);

  System.out.println("Client is connected:"+isConnected);

  String thingName = "ThingWatcherThing";

  VirtualThing thing = new VirtualThing(thingName, "", thingName, client);

  thing.addPropertyChangeListener(new VirtualThingPropertyChangeListener() {

     @Override

     public void propertyChangeEventReceived(VirtualThingPropertyChangeEvent event) {

        Property property = event.getProperty();

        String name = property.getPropertyDefinition().getName();

        if(name.equals("TestProp") == false){

           return;

        }

     }

  } );

  client.bindThing(thing);

} catch (Exception e1) {

  e1.printStackTrace();

}

So, where's the problem? Is ist the correct approach?

Many Greets, Korbinian

2 REPLIES

Re: Observe Thingworx Property Change with Java SDK

Hi Korbinian,

You posted your question in the Training Community. You might get more visibility with fellow IoT developers (and thus more responses!) in the ThingWorx Community: https://community.thingworx.com/welcome

Bettina

Level 1

Re: Observe Thingworx Property Change with Java SDK

Ah sorry, my fault. Posted it now in the correct community