DDS11 — Behavior of DataReaderListener::on_data_available

It is not clearly defined whether the on_data_available notification should be generated on every arrival of new data, or just on the status change that happens when coming from a no data situation.
Resolution:
For every arrival of new data, a notification should be generated, regardless of whether the previous data has already been read before.
Revised Text:
Introduce textual changes to 2.1.4.2.2 that describes the complete set of conditions under which the read-communication status will change. The data available status is considered to have changed each time a new sample becomes available or the ViewState, SampleState, or InstanceState of any existing sample changes for any reason other than a read or take.
Specific changes that cause the status to be changed include:
· The arrival of new data
· The disposal of an instance
· The loss of liveliness of a writer of an instance when no other writer of that instance exists
· Unregistration of an instance by the last writer of that instance

No Data Available