[Xapian-tickets] [Xapian] #508: OP_PHRASE should directly support non-leaf subqueries

[Xapian]

#508: OP_PHRASE should directly support non-leaf subqueries
-------------------------+--------------------------------------------------
 Reporter:  olly         |       Owner:  olly     
     Type:  enhancement  |      Status:  new      
 Priority:  normal       |   Milestone:  1.2.x    
Component:  Matcher      |     Version:  SVN trunk
 Severity:  normal       |   Blockedby:           
 Platform:  All          |    Blocking:           
-------------------------+--------------------------------------------------
 Currently Xapian does support OP_PHRASE with non-leaf subqueries, like
 this:

 {{{
 A OP_PHRASE (B OP_OR C)
 }}}

 But it handles with by converting it to:

 {{{
 (A OP_PHRASE B) OP_OR (A OP_PHRASE C)
 }}}

 This works, but it would be more efficient for OP_OR, etc to support
 merging of the positional information of their subqueries so that
 OP_PHRASE could work directly with non-lead subqueries.

 Marking as 1.2.x since this is essentially an internal implementation
 change so there aren't API or ABI compatibility concerns.

-- 
Ticket URL: <http://trac.xapian.org/ticket/508>
Xapian <http://xapian.org/>
Xapian