# ====================================================================
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
# ====================================================================
from lucene import \
IndexReader, Term, BitSet, PythonFilter, JArray, OpenBitSet
#
# A Filter extension, with a TermDocs wrapper working around the lack of
# support for returning values in array arguments.
#
class SpecialsFilter(PythonFilter):
def __init__(self, accessor):
super(SpecialsFilter, self).__init__()
self.accessor = accessor
def getDocIdSet(self, reader):
bits = OpenBitSet(long(reader.maxDoc()))
isbns = self.accessor.isbns()
docs = JArray(int)(1)
freqs = JArray(int)(1)
for isbn in isbns:
if isbn is not None:
termDocs = reader.termDocs(Term("isbn", isbn))
count = termDocs.read(docs, freqs)
if count == 1:
bits.set(long(docs[0]))
return bits
def __str__():
return "SpecialsFilter"
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