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BibIndexRecJsonTokenizer.py
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Thu, Sep 12, 11:44

BibIndexRecJsonTokenizer.py
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# -*- coding:utf-8 -*-
#
# This file is part of Invenio.
# Copyright (C) 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.
"""
BibIndexRecJsonTokenizer.
It's an abstract class created only for inheritance purposes.
Tokenizers which are based on RecJsonTokenizer use bibfield/JsonAlchemy records.
Logic of the tokenization process is in the functions of bibfield module.
Tokenizer itself should perform only necessary post-processing.
"""
from invenio.modules.indexer.tokenizers.BibIndexTokenizer import BibIndexTokenizer
class BibIndexRecJsonTokenizer(BibIndexTokenizer):
"""
BibIndexRecJsonTokenizer is an abstract tokenizer.
It should be used only for inheritance.
It should be a base class for all tokenizers which need to use
bibfield/JsonAlchemy records.
Tokenizing function of RecJsonTokenizer takes a bibfield record
as an argument.
Main logic of tokenization process stays in bibfield record's
functions. Tokenizing functions of all tokenizers inheriting after
RecJsonTokenizer should only do post-processing tasks.
For example of use please check: BibIndexFiletypeTokenizer
"""
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 from bibfield module
@param urls: recjson record
"""
raise NotImplementedError
def get_tokenizing_function(self, wordtable_type):
raise NotImplementedError
def tokenize_for_words(self, recid):
raise NotImplementedError
def tokenize_for_pairs(self, recid):
raise NotImplementedError
def tokenize_for_phrases(self, recid):
raise NotImplementedError

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