[Xapian-tickets] [Xapian] #341: Python bindings should keep a reference to user-subclassable proxies when registered with consumers/users

[Xapian]

#341: Python bindings should keep a reference to user-subclassable proxies when
registered with consumers/users
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 Reporter:  james            |        Owner:  richard  
     Type:  defect           |       Status:  assigned 
 Priority:  normal           |    Milestone:  1.1.1    
Component:  Xapian-bindings  |      Version:  SVN trunk
 Severity:  normal           |   Resolution:           
 Keywords:                   |    Blockedby:           
 Platform:  All              |     Blocking:           
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Comment(by james):

 I hadn't tested it, but I have now and in doing so I've noticed a similar
 hack being used for TermFreqSource in DocSim (this is from a Richard
 branch, I assume; it's not in trunk). I've conformed my code to match that
 (which was much better style anyway):

 {{{

 # When we set a ValueRangeProcessor into the QueryParser, keep a python
 # reference so it won't be deleted. This hack can probably be removed once
 # xapian bug #186 is fixed.
 __queryparser_add_valuerangeprocessor_orig =
 QueryParser.add_valuerangeprocessor
 def _queryparser_add_valuerangeprocessor(self, vrproc):
     self._vrps.append(vrproc)
     return __queryparser_add_valuerangeprocessor_orig(self, vrproc)
 _queryparser_add_valuerangeprocessor.__doc__ =
 __queryparser_add_valuerangeprocessor_orig.__doc__
 QueryParser._vrps = []
 QueryParser.add_valuerangeprocessor = _queryparser_add_valuerangeprocessor
 del _queryparser_add_valuerangeprocessor
 }}}

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Ticket URL: <http://trac.xapian.org/ticket/341#comment:4>
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