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Author SHA1 Message Date
epriestley
a455e50e29 Build a Conpherence thread index
Summary:
Ref T3165. Builds a dedicated index for Conpherence to avoid scale/policy filtering concerns.

  - This is pretty one-off but I think it's generally OK.
  - There's no UI for it.
  - `ConpherenceFulltextQuery` is very low-level. You would need to do another query on the PHIDs it returns to actually show anything to the user.
  - The `previousTransactionPHID` is so you can load chat context efficiently. Specifically, if you want to show results like this:

> previous line of context
> **line of chat that matches the query**
> next line of context

...you can read the previous lines out of `previousTransactionPHID` directly, and the next lines by issuing one query with `WHERE previousTransactionPHID IN (...)`.

I'm not 100% sure this is useful, but it seemed like a reasonable thing to provide, since there's no way to query this efficiently otherwise and I figure a lot of chat might make way more sense with a couple of lines of context.

Test Plan:
  - Indexed a thread manually (whole thing indexed).
  - Indexed a thread by updating it (just the new comment indexed).
  - Wrote a hacky test script and got reasonable-looking query results.

Reviewers: btrahan

Reviewed By: btrahan

Subscribers: epriestley

Maniphest Tasks: T3165

Differential Revision: https://secure.phabricator.com/D11234
2015-01-06 10:24:30 -08:00