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Fixed #141 -- Added configuration setting for stemming strategy.

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Jürg Rast 2015-01-12 20:37:44 +01:00 committed by Jorge C. Leitão
parent 1ea3549d68
commit 82ba90b6a6
2 changed files with 10 additions and 1 deletions
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5
README.rst
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@ -85,6 +85,11 @@ The backend has the following optional settings:
See `here <http://xapian.org/docs/apidoc/html/classXapian_1_1QueryParser.html>`_ for more information
on what they mean.
- ``HAYSTACK_XAPIAN_STEMMING_STRATEGY``: This option lets you chose the stemming strategy used by Xapian. Possible
values are ``STEM_NONE``, ``STEM_SOME``, ``STEM_ALL``, ``STEM_ALL_Z``, where ``STEM_SOME`` is the default.
See `here <http://xapian.org/docs/apidoc/html/classXapian_1_1QueryParser.html#ac7dc3b55b6083bd3ff98fc8b2726c8fd>`_ for
more information about the different strategies.
Testing
-------

6
xapian_backend.py
View file

@ -192,6 +192,9 @@ class XapianSearchBackend(BaseSearchBackend):
self.flags = connection_options.get('FLAGS', DEFAULT_XAPIAN_FLAGS)
self.language = getattr(settings, 'HAYSTACK_XAPIAN_LANGUAGE', 'english')
stemming_strategy_string = getattr(settings, 'HAYSTACK_XAPIAN_STEMMING_STRATEGY', 'STEM_SOME')
self.stemming_strategy = getattr(xapian.QueryParser, stemming_strategy_string, xapian.QueryParser.STEM_SOME)
# these 4 attributes are caches populated in `build_schema`
# they are checked in `_update_cache`
# use property to retrieve them
@ -273,6 +276,7 @@ class XapianSearchBackend(BaseSearchBackend):
term_generator = xapian.TermGenerator()
term_generator.set_database(database)
term_generator.set_stemmer(xapian.Stem(self.language))
term_generator.set_stemming_strategy(self.stemming_strategy)
if self.include_spelling is True:
term_generator.set_flags(xapian.TermGenerator.FLAG_SPELLING)
@ -805,7 +809,7 @@ class XapianSearchBackend(BaseSearchBackend):
qp = xapian.QueryParser()
qp.set_database(self._database())
qp.set_stemmer(xapian.Stem(self.language))
qp.set_stemming_strategy(xapian.QueryParser.STEM_SOME)
qp.set_stemming_strategy(self.stemming_strategy)
qp.set_default_op(XAPIAN_OPTS[DEFAULT_OPERATOR])
qp.add_boolean_prefix('django_ct', TERM_PREFIXES['django_ct'])