Evolution Connector for Microsoft Exchange Programmer’s Reference Manual |
---|
Direct Booking of Resource Calendars |
"Direct booking" is the ability to directly add appointments to the calendar of an Exchange "user" that represents a resource. ("Resource" almost always means a conference room, but in theory could also be a video projector, white board, or anything else reservable.)
Connector's implementation of this functionality is designed to be basically identical to Outlook's.
Creating a Resource
Any Exchange account can be a resource. Nothing special needs to be
done in Exchange or Active Directory. There are three properties,
stored on the account's
|
If |
|
If |
|
If |
Connector doesn't currently provide any way to set these properties on a mailbox. (Outlook does.)
Of course, to be able to act as a resource, the account's Calendar must be writable by other users. (And the properties on the free/busy message must be readable as well. If you use the Delegates dialog in either Outlook or Evolution, it will make sure the free/busy message is readable to any user who can read the Calendar.)
Booking a Resource
Outlook's convention is that direct booking happens when all of the following are true:
An Exchange user is added to the meeting with an attendee type of
RESOURCE
.That user has the
PR_PROCESS_MEETING_REQUESTS
property set.The user creating the meeting has permission to create the appointment in the resource user's Calendar.
If any of these criteria are not met, then it silently falls back to normal mail-based scheduling. (Among other things, this allows you to set up a resource such that some users can book it directly, but if anyone else tries to, it will just send a meeting request to that account, which can then be accepted or rejected manually by a secretary.)
If all the criteria are met, but the meeting must be rejected because
of the settings of the
PR_DECLINE_RECURRING_MEETING_REQUESTS
or
PR_DECLINE_CONFLICTING_MEETING_REQUESTS
properties,
then Outlook will pop up an error dialog
explaining the problem, and refuse to save/send the meeting request.
If the resource can be booked, then Outlook will update the meeting request to show that the resource has accepted it, save that meeting request in the resource's calendar, and then send that meeting request to all of the remaining users (but NOT the resource) by mail.
Cancelation
If you cancel a meeting that has a booked resource,
Outlook does not
remove the event from the resource's calendar. Instead, it prepends
"Cancelled: " to the event's summary and changes its
TRANSP
property to TRANSPARENT
so that it no longer shows up as busy. This leaves the original event
in the calendar, for record-keeping purposes, but allows a new event
to use the resource instead.