Hi,
I'm using Orbeon 4.6 with the REST Persistence API to save the data users would submit to my own backend. This all works quite smoothly, but I would like to uniquely identify any repeated elements that users submit. Without this, I for example can't accurately detect which elements were added, modified or deleted.
To make it a bit more explicit: suppose I have a 'My Bookshelf' form (how original!), with in it a repeated grid with 'title' and 'author' fields. The data returned by Orbeon after a single submission could look like this:
<form><book><title>catcher in the rye</title><author>J.D. Salinger</author></book></form>
Now suppose the user edits this form, and the data returned now is:
<form><book><title>The Catcher in the Rye</title><author>J.D. Salinger</author></book><book><title>Brave New World</title><author>Aldous Huxley</author></book></form>
I cannot accurately detect which element was added, and which was merely modified.
Could anyone please give me some pointers on how I could go about doing this?
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