Re: AW: Event Notification (MS Exchange 2003)

[Martin Berens <mh...@biss-net.com>]

Hi,

Daniel Florey schrieb:
> I missed something... The javadocs have been correct; they just didn't
> mention that the poll interval should be specified in milliseconds.
> It might be correct that you have to add the username to repositoryDomain
> when connecting to exchange as you also have to specify in the constructors
> credentials which user is taken to poll for events. This will fail if the
> user has no access to a specific path.
> So finally everything seems to be correct (except the fact that there are
> some mysterious methods in WebdavResource regarding subscriptions).

>>nl.subscribe("Update", "/Kontakte", 1, 3600, 0, new Subscriber() {
>> public void notify(String uri, Map information) {
>>     System.out.println("Event occured");
>> }
>>}, credentials);

is it correct that the "information" map provided by the notify sink
is always empty? Only the folder "uri" is delivered, not the URI of
the item that caused the event (probably MS Exchange does not
deliver more information?).

This makes it very difficult to find the item that caused the event.

- "Update" and "newmember" event sources can be found by searching the
   provided folder for the last modified item.

- But what about "Delete" event sources - do I have to subscribe for
   "Move" events at the "Papierkorb"/Trashcan of the corresponding
   user?

It should be easy for MS Exchange to deliver the information needed
to determine the event source, but it does not seem to do :(.

An alternative solution would be to subscribe for every single
appointment in all folders. That way I know exactly which appointment
has been deleted/updated, but this means probably severe performance
issues (if MS Exchange does really support thousands of
subscriptions...).

Am I right that MS Exchange's "poor" event notifications are the
issue here - or am I doing something wrong?

Regards,

Martin

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