Source Code for Module grassyknoll.backend.lucene.OneOfQuery

 1  from lucene import (BooleanQuery, Query, TermQuery, Term, NumberTools, 
 2                        BooleanClause) 
 3   
 4 -def OneOfQuery(field, items): 
 5      """build an OR query for any of items in field 
 6       
 7      @arg field: name of the field to search for literals 
 8      @type field: string 
 9       
10      @arg items: list of items to include. These can be L{Query}, 
11      basestring or integer.  
12      @type items: List 
13       
14      @rtype: L{BooleanQuery} 
15      """ 
16      q=BooleanQuery() 
17      q.setMaxClauseCount(len(items)) 
18      for i in items: 
19          if Query.instance_(i): 
20              pass 
21          elif isinstance(i, basestring): 
22              i=TermQuery(Term(field, i)) 
23          elif isinstance(i, (int, long)): 
24              i=TermQuery(Term(field, NumberTools.longToString(i))) 
25          else: 
26              raise TypeError, i 
27          q.add(i, BooleanClause.Occur.SHOULD) 
28      return q 
29