[Xapian-tickets] [Xapian] #432: valuestreams not used by OP_VALUE_RANGE (was: valuestream document not used by OP_VALUE_RANGE)

[Xapian]

#432: valuestreams not used by OP_VALUE_RANGE
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 Reporter:  richard      |       Owner:  olly     
     Type:  enhancement  |      Status:  new      
 Priority:  normal       |   Milestone:  1.2.x    
Component:  Matcher      |     Version:  SVN trunk
 Severity:  normal       |    Keywords:           
Blockedby:               |    Platform:  All      
 Blocking:               |  
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Changes (by olly):

  * type:  defect => enhancement


Comment:

 !ValueStreamDocument is only required because we need to be able to pass a
 Document object to user subclassable functors.  OP_VALUE_RANGE only needs
 to read values from a single document slot, so should just use a
 valuestream iterator directly.

 If we're worried about sharing a valuestream between filtering and
 sorting, etc then we should push the sharing mechanism into a separate
 place which just returns a shared valuestream iterator which we can use
 here, rather than forcing access through a Document proxy (which adds
 needless overhead) to achieve this.

 Marking as an enhancement, since this isn't buggy, just slower than it
 could be.

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Ticket URL: <http://trac.xapian.org/ticket/432#comment:1>
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