Homec4science
Diffusion invenio-infoscience (maint-1.2) Browse

R3600/modules/bibindex/lib/tokenizers/BibIndexJournalTokenizer.py
ab532de38f71maint-1.2

Last Change
Raw File

BibIndexJournalTokenizer.py
View Options

# -*- coding:utf-8 -*-
##
## This file is part of Invenio.
## Copyright (C) 2010, 2011, 2012 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.
"""BibIndexJournalTokenizer: useful for journal index.
Agregates info about journal in a specific way given by its variable
journal_pubinfo_standard_form.
Behaves in the same way for all index table types:
- Words
- Pairs
- Phrases
"""
from invenio.dbquery import run_sql
from invenio.bibindex_tokenizers.BibIndexEmptyTokenizer import BibIndexEmptyTokenizer
from invenio.config import \
CFG_CERN_SITE, \
CFG_INSPIRE_SITE
if CFG_CERN_SITE:
CFG_JOURNAL_TAG = '773__%'
CFG_JOURNAL_PUBINFO_STANDARD_FORM = "773__p 773__v (773__y) 773__c"
CFG_JOURNAL_PUBINFO_STANDARD_FORM_REGEXP_CHECK = r'^\w.*\s\w.*\s\(\d+\)\s\w.*$'
elif CFG_INSPIRE_SITE:
CFG_JOURNAL_TAG = '773__%'
CFG_JOURNAL_PUBINFO_STANDARD_FORM = "773__p,773__v,773__c"
CFG_JOURNAL_PUBINFO_STANDARD_FORM_REGEXP_CHECK = r'^\w.*,\w.*,\w.*$'
else:
CFG_JOURNAL_TAG = '909C4%'
CFG_JOURNAL_PUBINFO_STANDARD_FORM = "909C4p 909C4v (909C4y) 909C4c"
CFG_JOURNAL_PUBINFO_STANDARD_FORM_REGEXP_CHECK = r'^\w.*\s\w.*\s\(\d+\)\s\w.*$'
class BibIndexJournalTokenizer(BibIndexEmptyTokenizer):
"""
Tokenizer for journal index. It returns joined title/volume/year/page as a word from journal tag.
(In fact it's an aggregator.)
"""
def __init__(self, stemming_language = None, remove_stopwords = False, remove_html_markup = False, remove_latex_markup = False):
self.tag = CFG_JOURNAL_TAG
self.journal_pubinfo_standard_form = CFG_JOURNAL_PUBINFO_STANDARD_FORM
self.journal_pubinfo_standard_form_regexp_check = CFG_JOURNAL_PUBINFO_STANDARD_FORM_REGEXP_CHECK
def tokenize(self, recID):
"""
Special procedure to extract words from journal tags. Joins
title/volume/year/page into a standard form that is also used for
citations.
"""
# get all journal tags/subfields:
bibXXx = "bib" + self.tag[0] + self.tag[1] + "x"
bibrec_bibXXx = "bibrec_" + bibXXx
query = """SELECT bb.field_number,b.tag,b.value FROM %s AS b, %s AS bb
WHERE bb.id_bibrec=%%s
AND bb.id_bibxxx=b.id AND tag LIKE %%s""" % (bibXXx, bibrec_bibXXx)
res = run_sql(query, (recID, self.tag))
# construct journal pubinfo:
dpubinfos = {}
for row in res:
nb_instance, subfield, value = row
if subfield.endswith("c"):
# delete pageend if value is pagestart-pageend
# FIXME: pages may not be in 'c' subfield
value = value.split('-', 1)[0]
if dpubinfos.has_key(nb_instance):
dpubinfos[nb_instance][subfield] = value
else:
dpubinfos[nb_instance] = {subfield: value}
# construct standard format:
lwords = []
for dpubinfo in dpubinfos.values():
# index all journal subfields separately
for tag, val in dpubinfo.items():
lwords.append(val)
# index journal standard format:
pubinfo = self.journal_pubinfo_standard_form
for tag, val in dpubinfo.items():
pubinfo = pubinfo.replace(tag, val)
if self.tag[:-1] in pubinfo:
# some subfield was missing, do nothing
pass
else:
lwords.append(pubinfo)
# return list of words and pubinfos:
return lwords
def get_tokenizing_function(self, wordtable_type):
return self.tokenize
c4science · Help