def _tokenize(string):
words = []
for word in tokenize(string):
try:
words.append(normalize(word))
except StopWord:
continue
return words
def get_words(self):
"""Return words to be indexed (a word is an unicode string).
"""
for attr in self.__indexable_attributes:
value = getattr(self, attr, None)
if value is None:
continue
for word in tokenize(value):
yield word
def execute(self, querystr, cursor=None):
"""Execute a full text query and return a list of 2-uple (rating, uid).
"""
if isinstance(querystr, str):
querystr = unicode(querystr, self.encoding)
words = normalize_words(tokenize(querystr))
cursor = cursor or self._cnx.cursor()
cursor.execute(
'SELECT 1, uid FROM appears '
'WHERE MATCH (words) AGAINST (%(words)s IN BOOLEAN MODE)',
{'words': ' '.join(words)})
return cursor.fetchall()
def restriction_sql(self, tablename, querystr, jointo=None, not_=False):
"""Execute a full text query and return a list of 2-uple (rating, uid).
"""
if isinstance(querystr, str):
querystr = unicode(querystr, self.encoding)
words = normalize_words(tokenize(querystr))
sql = "MATCH (%s.words) AGAINST ('%s' IN BOOLEAN MODE)" % (
tablename, ' '.join(words))
if not_:
sql = 'NOT (%s)' % sql
if jointo is None:
return sql
return "%s AND %s.uid=%s" % (sql, tablename, jointo)
def execute(self, querystr, cursor=None):
"""Execute a full text query and return a list of 2-uple (rating, uid).
"""
if isinstance(querystr, str):
querystr = unicode(querystr, self.encoding)
words = normalize_words(tokenize(querystr))
cursor = cursor or self._cnx.cursor()
cursor.execute(
'SELECT 1, uid FROM appears '
"WHERE words @@ to_tsquery(%(config)s, %(words)s)", {
'config': self.config,
'words': '&'.join(words)
})
return cursor.fetchall()
def restriction_sql(self, tablename, querystr, jointo=None, not_=False):
"""Execute a full text query and return a list of 2-uple (rating, uid).
"""
if isinstance(querystr, str):
querystr = unicode(querystr, self.encoding)
words = normalize_words(tokenize(querystr))
# XXX replace '%' since it makes tsearch fail, dunno why yet, should
# be properly fixed
searched = '&'.join(words).replace('%', '')
sql = "%s.words @@ to_tsquery('%s', '%s')" % (tablename, self.config,
searched)
if not_:
sql = 'NOT (%s)' % sql
if jointo is None:
return sql
return "%s AND %s.uid=%s" % (sql, tablename, jointo)
def restriction_sql(self, tablename, querystr, jointo=None, not_=False):
if isinstance(querystr, str):
querystr = unicode(querystr, self.encoding)
words = []
for word in tokenize(querystr):
try:
words.append("'%s'" % normalize(word))
except StopWord:
continue
sql = '%s.word_id IN (SELECT word_id FROM word WHERE word in (%s))' % (
tablename, ', '.join(words))
if not_:
sql = 'NOT (%s)' % sql
if jointo is None:
return sql
return '%s AND %s.uid=%s' % (sql, tablename, jointo)
def get_words(self):
return tokenize(u'gïnco-jpl blâ blîp blôp blàp')
def _get_words(self, buffer):
""" extract word from a plain text buffer """
for line in buffer.xreadlines():
for word in tokenize(unicode(line, self.encoding)):
yield word
