[Xapian-tickets] [Xapian] #52: Running postlists backwards

[Xapian]

#52: Running postlists backwards
---------------------------+------------------------------------------------
 Reporter:  olly           |        Owner:  olly    
     Type:  enhancement    |       Status:  assigned
 Priority:  normal         |    Milestone:  1.1.1   
Component:  Backend-Chert  |      Version:  SVN HEAD
 Severity:  minor          |   Resolution:          
 Keywords:                 |    Blockedby:          
 Platform:  All            |     Blocking:          
---------------------------+------------------------------------------------
Changes (by olly):

  * component:  Backend-Flint => Backend-Chert
  * milestone:  => 1.1.1


Old description:

> Ability to run a postlist backwards - it's chunked, so this is feasible
> (with a small change we can even decode the current encoding backwards!)
> This is useful as we can add articles in date order and do a boolean
> search
> running the posting lists backwards to do "sort by date" (which is good
> as it
> an terminate once we've enough matches).  Need this for gmane.

New description:

 Ability to run a postlist backwards - it's chunked, so this is feasible
 (with a small change we can even decode the current encoding backwards!)
 This is useful as we can add articles in date order and do a boolean
 search
 running the posting lists backwards to do "sort by date" (which is good as
 it
 an terminate once we've enough matches).  Need this for gmane.

--

Comment:

 Retarget at chert not flint; mark for considering during 1.1.x series.

-- 
Ticket URL: <http://trac.xapian.org/ticket/52#comment:5>
Xapian <http://xapian.org/>
Xapian