Hello Sascha,

Thank you for the question. The SDK is designed so that this is the only sensible way to deal with Events. Do you have some reason that generating or writing the EventType classes is not working for you? As you already have the UaNodeset file, the codegen should work nicely in this situation.

Hi,

So, did I understand correctly that the UaNodeset file containing the event types will become available for your application only during the runtime? And after the file becomes available, you would like to be able to create EventTypes dynamically?

In the current version of the Java SDK, this kind of feature is not available even if you bought the source code edition. Of course ‘everything’ is possible, but it’s hard to estimate how big of a change this would be in practice. However, we always try to provide features that are requested so this could potentially be implemented in the future.

Just to provide some backgroud, you always need to define the EventType and the EventType needs to be visible in the servers address space. This requirement comes from the OPC UA specification and there would be no sense to not work according to specification in this case.

Perhaps the most practical and still OPC UA compliant solution in this case would be that you create your EventType, for example named DynamicEventType. Then, you would define properties/variables in this EventType so that you can always set your variable values defined during the runtime in these properties/variables.