Requirements of the atom:updated time stamp

[heuer]

The Atom spec allows a broad interpretation of the atom:updated value:

The "atom:updated" element is a Date construct indicating the most recent instant in time when an entry or feed was modified in a way the publisher considers significant. Therefore, not all modifications necessarily result in a changed atom:updated value.

I wonder if the SDShare spec should constrain which value the atom:updated value should carry for

• feeds
• entries

See also issue #52.

[heuer]

See also http://projects.topicmapslab.de/issues/3739

[heuer]

Issue #27 mentions the atom:updated element for entries in the overview feed. The solution suggests to be silient about the atom:updated element which is IMO suboptimal. The SDShare spec should either say that the atom:updated has no explicit meaning or it should suggest something like

The atom:updated value of the collection entries SHOULD reflect the date time of the most recently updated item being exposed by the collection

[gra-moore]

I like this one of your propsals: "atom:updated has no explicit meaning".