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R3600/invenio/modules/search/searchext/units/referstoexcludingselfcites.py
66ad8455f25diugw2017

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referstoexcludingselfcites.py
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# -*- coding: utf-8 -*-
#
# This file is part of Invenio.
# Copyright (C) 2014, 2015 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.
"""Refers to except self-refs search unit."""
from intbitset import intbitset
def search_unit(query, f, m, wl=None):
"""Search for records referred to by matched records except self-refs."""
from invenio.legacy.search_engine import search_pattern
from invenio.legacy.bibrank.citation_searcher import get_cited_by_list
from invenio.legacy.bibrank.selfcites_searcher import (
get_self_cited_by_list
)
if query:
if isinstance(query, intbitset):
ahitset = query
else:
ahitset = search_pattern(p=query)
citers = intbitset()
citations = get_cited_by_list(ahitset)
selfcitations = get_self_cited_by_list(ahitset)
for cites, selfcites in zip(citations, selfcitations):
# cites is in the form [(citee, citers), ...]
citers += cites[1] - selfcites[1]
return citers
else:
return intbitset([])
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