Question about DAV:getlastmodified property

Hello everyone,

I have a question about the value of the DAV:getlastmodified property.

If I have a WebDAV server which uses an underlying file system, then the
values of that property are pretty much given by that system. If however
I have a WebDAV server which implements the resources itself, is there
some recommendation what the DAV:getlastmodified should reflect?

Changes to the contents of a resource obviously will affect the
modification date, but which properties do also do that? A rename on
Linux for example will not change the modification date. Should a
PROPPATCH on DAV:displayname also not change the modification date of a
resource? What about acquiring a LOCK or setting ACLs on a resource? Has
anybody created a list of properties which should lead to an update of
the modification date, if they are changed? Should changes to dead
properties always lead to a change in the modification date?

regards,
   Heiko Weber

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Tamino Development