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Provide a mechanism equivalent to Atom's "<complete>" element for indicating completeness of feeds #1397

danbri opened this issue Oct 6, 2016 · 3 comments


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@danbri danbri commented Oct 6, 2016 does not currently distinguish between a feed that contains all current items, vs those that don't. The Atom format defines such a notion via a 'complete' element.

This information would be useful for interpreting whether entries missing from the feed should be treated as no longer existing (if it's a complete feed), or simply not part of this partial representation of the feed (if it's not a complete feed).


Add a simple subtype of DataFeed called CompleteDataFeed. Definition along these lines:

A CompleteDataFeed is a DataFeed whose standard representation includes content for every item currently in the feed.

This is the equivalent of Atom's element as defined by Feed Paging and Archiving (RFC 5005),

For example (and as defined for Atom), when using data from a feed that represents a collection of items that varies over time (e.g. "Top Twenty Records") there is no need to have newer entries mixed in alongside older, obsolete entries. By marking this feed as a CompleteDataFeed, old entries can be safely discarded when the feed is refreshed, since we can assume the feed has provided descriptions for all current items.

@danbri danbri self-assigned this Oct 6, 2016
danbri added a commit that referenced this issue Oct 6, 2016
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@danbri danbri commented Oct 6, 2016

Drafted in pending for review:

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@thadguidry thadguidry commented Oct 6, 2016

@danbri are you fairly confident that this is better as a subtype rather than a property on DataFeed ? Pros/Cons ? Why not expose the <complete>element as a special property right on DataFeed , basically lifting it out of dataFeedElement which in theory is really were Atom <complete>realistically lives currently ?

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@beccahughes beccahughes commented Mar 13, 2020

CompleteDataFeed has been pending for a few years, is this something that is going to become part of

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