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1<?php
2
3/**
4 * This program is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU General Public License
6 * as published by the Free Software Foundation; under version 2
7 * of the License (non-upgradable).
8 *
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
12 * GNU General Public License for more details.
13 *
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write to the Free Software
16 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
17 *
18 * Copyright (c) 2018-2021 (original work) Open Assessment Technologies SA;
19 */
20
21namespace oat\tao\model\search\index;
22
23use oat\tao\model\search\index\DocumentBuilder\IndexDocumentBuilderInterface;
24use Zend\ServiceManager\ServiceLocatorAwareInterface;
25use Zend\ServiceManager\ServiceLocatorAwareTrait;
26
27class IndexIterator extends \IteratorIterator implements ServiceLocatorAwareInterface
28{
29    use ServiceLocatorAwareTrait;
30
31    /** @var IndexDocumentBuilderInterface  */
32    private $indexService = null;
33
34    protected function getIndexer(): IndexDocumentBuilderInterface
35    {
36        if (is_null($this->indexService)) {
37            $this->indexService = $this->getServiceLocator()->getContainer()->get(IndexDocumentBuilderInterface::class);
38        }
39
40        return $this->indexService;
41    }
42
43    public function valid(): bool
44    {
45        return $this->getInnerIterator()->valid();
46    }
47
48    /**
49     * @return mixed|IndexDocument
50     * @throws \common_Exception
51     * @throws \common_exception_InconsistentData
52     */
53    public function current()
54    {
55        return $this->getIndexer()->createDocumentFromResource($this->getInnerIterator()->current());
56    }
57}