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https://issues.apache.org/jira/browse/COUCHDB-1950?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13843195#comment-13843195
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Jan Lehnardt commented on COUCHDB-1950:
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What then, is our story for app-level resolution functions? A _changes-feed
powered app-level-resolver will create the same issues as far as I can tell and
I am happy to use a different thing altogether.
Whatever we suggest that people do in their apps, I’d like to take a piece out
of the boilerplate that they need to set up for running CouchDB apps. (I hope
that clarifies my motivation).
> ddoc-based conflict resolution
> ------------------------------
>
> Key: COUCHDB-1950
> URL: https://issues.apache.org/jira/browse/COUCHDB-1950
> Project: CouchDB
> Issue Type: Improvement
> Reporter: Nathan Vander Wilt
>
> This was discussed at CouchConf in Vancouver last month, but didn't see a
> hook here I could refer to in another conversation, so…
> It'd be great if a design document could include a conflict resolver
> function, in the vein of other "app logic" handler hooks like
> validate_doc_write. I imagine it would look something like either "function
> (currentWinner, nextWinningestLoser, parent)" (simply called multiple times
> if more than 2 leafs) or simply "function (arrayOfDocs, revisionHistor)" — if
> it returns a document, that's the winner, if not the next design document in
> line gets a pass at it. (Bonus: if it throws, the conflict stays no matter
> what other resolvers say?)
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