[wp-trac] [WordPress Trac] #8071: Refrain from querying all the comments on a post when paged

[WordPress Trac]

#8071: Refrain from querying all the comments on a post when paged
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 Reporter:  markjaquith               |       Owner:  boonebgorges
     Type:  enhancement               |      Status:  closed
 Priority:  normal                    |   Milestone:  4.4
Component:  Comments                  |     Version:  2.7
 Severity:  normal                    |  Resolution:  fixed
 Keywords:  dev-feedback needs-patch  |     Focuses:
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Comment (by boonebgorges):

 In [changeset:"34730"]:
 {{{
 #!CommitTicketReference repository="" revision="34730"
 Prevent extra db queries in `WP_Comment::get_children()`.

 `WP_Comment_Query::fill_descendants()` queries for a comment tree in a way
 that
 minimizes database overhead, and places the located descendants with their
 proper parents. However, it doesn't touch leaf nodes - comments with no
 children - so future calls to `get_children()` on those comment objects
 result in unnecessary database queries. To prevent this,
 `fill_descendants()`
 now sets a `populated_children` flag on all located `WP_Comment` objects.

 See #8071.
 }}}

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Ticket URL: <https://core.trac.wordpress.org/ticket/8071#comment:53>
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