[Exist-open] Best way to perform atomic edits from a web interface?

[Emmanuel d'O. <ed...@ab...>]

Dear all,


I was hoping that some of you may share their insights on this topic I'm
documenting:

Problem:
Allowing concurrent atomic edits of an xml document in eXist from multiple
users using a web browser.

Example:
A planning is stored as a single XML document in eXist.
At any given time it contains 1000+ events, each containing a number of
children (date, time, location, resources, comments, links, etc).
The planning goes through only minor XSL transformations to be displayed in
the browser and could almost be stored as plain XHTML in eXist.
Almost every value of the document can be updated/created/deleted in the
browser using javascript and these values are then sent back to eXist.
The structure of the document on the server may have changed in the
meantime.

Question:
What is the best way to identify the node that has been updated between the
browser and the server: unique ids on all editable elements?
Is there any other way to test identity between client and server?


Many thanks in advance,

Emmanuel

PS: Conflicting edits is another topic.