EventMessage object properties are null with the exception of the subject property after casting from Message

[JohnMAustin78]

When I get a Message object from my inbox that is an instance of EventMessage (and represents a meeting invitation), the EventMessage object I get when casting from Message has all null properties with the exception of the Subject property. In consequence, I cannot get the Event object after calling EventMessage.getEvent().

 public boolean respondToEmailInvite(Message emailInvite) throws ExecutionException, InterruptedException, RuntimeException {
        if ((emailInvite instanceof EventMessage) == false)
            return false;
        CalendarSnippets calendarSnippets = new CalendarSnippets(mOutlookClient);

        EventMessage eventMessage = (EventMessage)emailInvite;

        String eventId = eventMessage.getEvent().getId();
        calendarSnippets.respondToCalendarEventInvite(
                eventId
                , GlobalValues.USER_EMAIL
                , ResponseType.Accepted);


        return true;
    }

[JohnMAustin78]

Upon further review, the message collection is retrieved with a select statement:
public List getMailMessages() throws ExecutionException, InterruptedException {
List messages = mOutlookClient
.getMe()
.getFolders()
.getById("Inbox")
.getMessages()
.select("Subject")
.orderBy("DateTimeReceived desc")
.top(EMAIL_PAGE_SIZE)
.read().get();
return messages;

Add "Event" to the select list and the event property is no longer null.

[JohnMAustin78]

Upon further testing, removing the select clause from the getMessages() method call returns all of the message properties. However, for the EventMessage ODATA type, the Event property is still null.

[marcote]

@JohnAustin-MSFT but, what about the raw payload? Are you retrieving the actual Event? I would like to see what's the actual request you're executing and what's the raw payload. If the Event is part of the payload, then we may have a Deserialization problem.

Thanks!