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BibIndexDOITokenizer.py
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Mon, Nov 18, 16:14

BibIndexDOITokenizer.py
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# -*- coding:utf-8 -*-
#
# This file is part of Invenio.
# Copyright (C) 2013 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.
from invenio.modules.indexer.tokenizers.BibIndexFilteringTokenizer import BibIndexFilteringTokenizer
class BibIndexDOITokenizer(BibIndexFilteringTokenizer):
"""
Filtering tokenizer which tokenizes DOI tag (0247_a)
only if "0247_2" tag is present and its value equals "DOI"
and 909C4a tag without any constraints.
"""
def __init__(self, stemming_language=None, remove_stopwords=False, remove_html_markup=False, remove_latex_markup=False):
self.rules = (('0247_a', '2', 'DOI'), ('909C4a', '', ''))
def get_tokenizing_function(self, wordtable_type):
"""Returns proper tokenizing function"""
return self.tokenize
def tokenize_via_recjson(self, recID):
"""
Nonmarc version of tokenize function for DOI.
Note: with nonmarc we don't need to filter anymore.
We just need to take value from record because we
use bibfield here.
"""
rec = get_record(recID)
values = rec.get('doi', [])
return values
def get_nonmarc_tokenizing_function(self, table_type):
"""
Returns proper tokenizing function for non-marc records.
"""
return self.tokenize_via_recjson

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