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Refactored _filter_in query constructor.

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Jorge C. Leitão 2014-05-17 13:19:17 +02:00
parent 2969a74953
commit 99dc011a25
1 changed files with 8 additions and 19 deletions
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27
xapian_backend.py
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@ -1092,27 +1092,16 @@ class XapianSearchQuery(BaseSearchQuery):
def _filter_in(self, term_list, field_name, field_type, is_not):
"""
Private method that returns a xapian.Query that searches for any term
of `value_list` in a specified `field`.
Returns a query that matches exactly ANY term in term_list.
Required arguments:
``term_list`` -- The terms to search for
``field`` -- The field to search
``is_not`` -- Invert the search results
Returns:
A xapian.Query
Notice that:
A in {B,C} <=> (A = B or A = C)
~(A in {B,C}) <=> ~(A = B or A = C)
Because OP_AND_NOT(C, D) <=> (C and ~D), then D=(A in {B,C}) requires `is_not=False`.
"""
query_list = []
for term in term_list:
if ' ' in term:
query_list.append(
self._phrase_query(term.split(), field_name)
)
else:
query_list.append(
self._term_query(term, field_name, field_type)
)
query_list = [self._filter_exact(term, field_name, field_type, is_not=False)
for term in term_list]
if is_not:
return xapian.Query(xapian.Query.OP_AND_NOT, self._all_query(),
xapian.Query(xapian.Query.OP_OR, query_list))