Class Sabre\CalDAV\Backend\AbstractBackend

Updates properties for a calendar.

The list of mutations is stored in a Sabre\DAV\PropPatch object. To do the actual updates, you must tell this object which properties you're going to process with the handle() method.

Calling the handle method is like telling the PropPatch object "I promise I can handle updating this property".

Read the PropPatch documentation for more info and examples.

Returns a list of calendar objects.

This method should work identical to getCalendarObject, but instead return all the calendar objects in the list as an array.

If the backend supports this, it may allow for some speed-ups.

Performs a calendar-query on the contents of this calendar.

The calendar-query is defined in RFC4791 : CalDAV. Using the calendar-query it is possible for a client to request a specific set of object, based on contents of iCalendar properties, date-ranges and iCalendar component types (VTODO, VEVENT).

This method should just return a list of (relative) urls that match this query.

The list of filters are specified as an array. The exact array is documented by \Sabre\CalDAV\CalendarQueryParser.

Note that it is extremely likely that getCalendarObject for every path returned from this method will be called almost immediately after. You may want to anticipate this to speed up these requests.

This method provides a default implementation, which parses all the iCalendar objects in the specified calendar.

This default may well be good enough for personal use, and calendars that aren't very large. But if you anticipate high usage, big calendars or high loads, you are strongly adviced to optimize certain paths.

The best way to do so is override this method and to optimize specifically for 'common filters'.

Requests that are extremely common are:

• requests for just VEVENTS
• requests for just VTODO
• requests with a time-range-filter on either VEVENT or VTODO.

..and combinations of these requests. It may not be worth it to try to handle every possible situation and just rely on the (relatively easy to use) CalendarQueryValidator to handle the rest.

Note that especially time-range-filters may be difficult to parse. A time-range filter specified on a VEVENT must for instance also handle recurrence rules correctly. A good example of how to interprete all these filters can also simply be found in \Sabre\CalDAV\CalendarQueryFilter. This class is as correct as possible, so it gives you a good idea on what type of stuff you need to think of.

Searches through all of a users calendars and calendar objects to find an object with a specific UID.

This method should return the path to this object, relative to the calendar home, so this path usually only contains two parts:

calendarpath/objectpath.ics

If the uid is not found, return null.

This method should only consider * objects that the principal owns, so any calendars owned by other principals that also appear in this collection should be ignored.