Source code for inspirehep.modules.records.facets

# -*- coding: utf-8 -*-
#
# This file is part of INSPIRE.
# Copyright (C) 2014-2018 CERN.
#
# INSPIRE 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 3 of the License, or
# (at your option) any later version.
#
# INSPIRE 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 INSPIRE. If not, see <http://www.gnu.org/licenses/>.
#
# In applying this license, CERN does not waive the privileges and immunities
# granted to it by virtue of its status as an Intergovernmental Organization
# or submit itself to any jurisdiction.

from __future__ import absolute_import, division, print_function

from elasticsearch_dsl.query import Range, Q


def range_author_count_filter(field):
    """Range filter for returning record only with 1 <= authors <= 10."""

    def inner(values):
        return Range(**{field: {'gte': 1, 'lte': 10}})

    return inner


def must_match_all_filter(field):
    """Bool filter containing a list of must matches."""

    def inner(values):
        filters = []
        for value in values:
            filters.append(Q('match', **{field: value}))
        return Q('bool', must=filters)

    return inner