[Xapian-tickets] [Xapian] #784: Have a public API for merging MSets

[Xapian]

#784: Have a public API for merging MSets
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 Reporter:  Kronuz       |             Owner:  olly
     Type:  enhancement  |            Status:  new
 Priority:  normal       |         Milestone:
Component:  Other        |           Version:
 Severity:  normal       |        Resolution:
 Keywords:               |        Blocked By:
 Blocking:               |  Operating System:  All
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Comment (by Kronuz):

 In the IRC chat, olly asked/suggested:

 > Not sure why a method for stats is needed -
 > wouldn't the public api be a static method something like:[[BR]]
 > `template<ITOR> Xapian::MSet merge(ITOR begin, ITOR end)`?[[BR]]
 > which should take care of any merging of stats etc that's needed
 [[BR]]

 To clarify, you mean that to be a static method of MSet? of what type
 would that `ITOR` be? and where/how would it get the stats?

 The stats method would be to get the stats for a query. I thought merging
 was a two-seteps process:
 1. Get stats for a query from each involved database and merge as "global"
 stats; and
 2. Get query results (queries using the global stats) and merge results
 into the merged MSet

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Ticket URL: <https://trac.xapian.org/ticket/784#comment:1>
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