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cache.py
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Mon, Oct 14, 10:54

cache.py
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# -*- coding: utf-8 -*-
#
# This file is part of Invenio.
# Copyright (C) 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.
from invenio.base.globals import cfg
from invenio.ext.cache import cache
from invenio.utils.hash import md5
search_results_cache = cache
def get_search_query_id(**kwargs):
"""
Returns unique query indentifier.
"""
p = kwargs.get('p', '')
f = kwargs.get('f', '')
cc = kwargs.get('cc', '')
wl = kwargs.get('wl', '')
so = kwargs.get('so', '')
sf = kwargs.get('sf', '')
return md5(repr((p, f, cc, wl, sf, so))).hexdigest()
def get_search_results_cache_key(**kwargs):
"""
Returns key for search results cache.
"""
return cfg['CFG_SEARCH_RESULTS_CACHE_PREFIX'] + get_search_query_id(**kwargs)
def get_search_results_cache_key_from_qid(qid=None):
"""
Returns key for search results cache from query identifier.
"""
if qid is not None:
return cfg['CFG_SEARCH_RESULTS_CACHE_PREFIX'] + qid
def get_collection_name_from_cache(qid):
"""
Returns collection name from query identifier.
"""
return search_results_cache.get(
get_search_results_cache_key_from_qid(qid) + '::cc')
def get_pattern_from_cache(qid):
"""
Returns pattern from query identifier.
"""
return search_results_cache.get(
get_search_results_cache_key_from_qid(qid) + '::p')

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