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1<?php
2
3/**
4 * Functionality to implement "previous unique ID" behavior.
5 *
6 * PHP version 8
7 *
8 * Copyright (C) Villanova University 2022.
9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License version 2,
12 * as published by the Free Software Foundation.
13 *
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
17 * GNU General Public License for more details.
18 *
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
22 *
23 * @category VuFind
24 * @package  RecordDrivers
25 * @author   Demian Katz <demian.katz@villanova.edu>
26 * @author   Ere Maijala <ere.maijala@helsinki.fi>
27 * @license  http://opensource.org/licenses/gpl-2.0.php GNU General Public License
28 * @link     https://vufind.org/wiki/development:plugins:record_drivers Wiki
29 */
30
31namespace VuFind\RecordDriver\Feature;
32
33/**
34 * Functionality to implement "previous unique ID" behavior.
35 *
36 * @category VuFind
37 * @package  RecordDrivers
38 * @author   Demian Katz <demian.katz@villanova.edu>
39 * @license  http://opensource.org/licenses/gpl-2.0.php GNU General Public License
40 * @link     https://vufind.org/wiki/development:plugins:record_drivers Wiki
41 */
42trait PreviousUniqueIdTrait
43{
44    /**
45     * Previous unique ID (if applicable).
46     *
47     * @var string
48     */
49    protected $previousUniqueId = null;
50
51    /**
52     * Get previous unique ID (or null if not applicable).
53     *
54     * @return string
55     */
56    public function getPreviousUniqueId()
57    {
58        return $this->previousUniqueId;
59    }
60
61    /**
62     * Set previous unique ID
63     *
64     * @param string $id ID to set
65     *
66     * @return void
67     */
68    public function setPreviousUniqueId($id)
69    {
70        $this->previousUniqueId = $id;
71    }
72}