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BibIndexFiletypeTokenizer.py
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Thu, Sep 12, 12:17

BibIndexFiletypeTokenizer.py
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# -*- coding:utf-8 -*-
#
# This file is part of Invenio.
# Copyright (C) 2010, 2011, 2012, 2013, 2014 CERN.
#
# Invenio is free software; you can redistribute it and/or
# modify it under the terms of the GNU General Public License as
# published by the Free Software Foundation; either version 2 of the
# License, or (at your option) any later version.
#
# Invenio is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
# General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with Invenio; if not, write to the Free Software Foundation, Inc.,
# 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
"""BibIndexFiletypeTokenizer: 'tokenizes' for file extensions.
Tokenizer is adapted to work with recjson and its get_record function.
"""
from invenio.modules.indexer.tokenizers.BibIndexRecJsonTokenizer import BibIndexRecJsonTokenizer
class BibIndexFiletypeTokenizer(BibIndexRecJsonTokenizer):
"""
Tokenizes for file extensions.
Tokenizer is adapted to work with recjson and its get_record function.
It accepts as an input a record created by a get_record function:
from invenio.modules.records.api import get_record
record16 = get_record(16)
tokenizer = BibIndexFiletypeTokenizer()
new_words = tokenizer.tokenize(record16)
"""
def __init__(self, stemming_language = None, remove_stopwords = False, remove_html_markup = False, remove_latex_markup = False):
pass
def tokenize(self, record):
"""'record' is a recjson record.
Function uses derived field 'filetypes'
from the record.
@param urls: recjson record
"""
values = []
try:
if 'filetypes' in record:
values = record['filetypes']
except KeyError:
pass
except TypeError:
return []
return values
def tokenize_for_words(self, record):
return self.tokenize(record)
def tokenize_for_pairs(self, record):
return self.tokenize(record)
def tokenize_for_phrases(self, record):
return self.tokenize(record)
def get_tokenizing_function(self, wordtable_type):
return self.tokenize

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