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bibcirculation_utils.py
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Sat, Nov 9, 08:11

bibcirculation_utils.py
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# -*- coding: utf-8 -*-
##
## $Id$
##
## This file is part of CDS Invenio.
## Copyright (C) 2002, 2003, 2004, 2005, 2006, 2007, 2008 CERN.
##
## CDS 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.
##
## CDS 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 CDS Invenio; if not, write to the Free Software Foundation, Inc.,
## 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
__revision__ = "$Id$"
"""
This file use screen scraping techique to get informations from ALEPH.
Using sysno, this file can find information about a book.
"""
# NON INVENIO IMPORTS
import urllib
import re
import time
from invenio.search_engine import get_fieldvalues
from invenio.search_engine import perform_request_search
from invenio.dbquery import run_sql
# GLOBAL VARS
_LP_ = re.compile('<!--Loan status-->\n<td class=td1 nowrap>(.*?)</td>\n<!--Due date-->', re.DOTALL)
_LIB_ = re.compile('<!--Sub-library-->\n<td class=td1 nowrap>(.*?)</td>\n<!--Collection-->', re.DOTALL)
_LOC_ = re.compile('<!--Location-->\n<td class=td1 nowrap>(.*?)</td>\n<!--Pages-->', re.DOTALL)
_BAR_ = re.compile('<!--Barcode-->\n<td class=td1>(.*?)</td>', re.DOTALL)
def get_book_info(sysno):
"""
Returns holding informations.
@param sysno ALEPH system number
"""
# GET SESSION VALUE
session_value = urllib.urlopen('http://cdslib.cern.ch:4505/cgi-bin/session')
session = session_value.read()
# GET INFO FROM ALEPH USING SESSION & SYSNO
aleph_info = urllib.urlopen("http://guest:aguest@cdslib.cern.ch:4505/ALEPH/"\
+session+\
"-00024/item-global?P01=CER01&P02="\
+sysno+\
"&P03=&P04=&P05=")
info = aleph_info.read()
nb_copies = re.findall('<!--Barcode-->', info)
result = []
for i in range(len(nb_copies)):
lp = re.findall(_LP_, info)[i]
#lib = re.findall(_LIB_, info)[i]
loc = re.findall(_LOC_, info)[i]
bar = re.findall(_BAR_, info)[i]
# tuple with (loan period, library, location, barcode)
tup = (bar, loc, lp)
result.append(tup)
return result
def holdings_info():
# list of all recids in the collection 'Books'
books_recids = perform_request_search(cc='Books')
for recid in books_recids:
t0 = time.time()
# for each recid get the sysno number
sysno = get_fieldvalues(recid, '970__a')
sysno = sysno[:9]
# get list with tuples
#
# e.g. get_book_info('002651748')
#
# [('CM-B00036572', '004.438.Python LUT', 'Four week loan'),
# ('CM-B00036976', '004.438.Python LUT', 'Four week loan'),
# ('CM-B00037141', '004.438.Python LUT', 'Four week loan')]
book_info = get_book_info(sysno)
for (bar, loc, lp) in book_info:
# insert into crcITEM book's values
run_sql("""insert into crcITEM (barcode, id_bibrec,
id_crcLIBRARY, location,
loan_period, status,
creation_date, modification_date,
number_of_requests)
values (%s, %s, '1', %s, %s, 'available', NOW(), NOW(), '0');
""", (bar, recid, loc, lp))
t1 = time.time()
t = t0 - t1
output = "recid: " + recid + " >>> Done. in " + t + " seconds."
return output

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