91 lines
3.1 KiB
PHP
91 lines
3.1 KiB
PHP
<?php
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/**
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; under version 2
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* of the License (non-upgradable).
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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* Copyright (c) 2020 (original work) Open Assessment Technologies SA;
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*/
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declare(strict_types=1);
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namespace oat\taoMediaManager\model\relation\service;
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use common_persistence_Persistence;
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use common_persistence_sql_QueryIterator;
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use common_persistence_SqlPersistence;
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use core_kernel_persistence_Exception;
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use Doctrine\DBAL\Connection;
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use oat\generis\model\OntologyAwareTrait;
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use oat\generis\model\OntologyRdf;
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use oat\oatbox\service\ConfigurableService;
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use oat\tao\model\task\migration\ResultUnit;
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use oat\tao\model\task\migration\ResultUnitCollection;
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use oat\tao\model\task\migration\service\ResultFilter;
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use oat\tao\model\task\migration\service\ResultSearcherInterface;
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abstract class AbstractRdsSearcher extends ConfigurableService implements ResultSearcherInterface
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{
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use OntologyAwareTrait;
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abstract protected function getTargetClasses(): array;
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public function search(ResultFilter $filter): ResultUnitCollection
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{
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$results = $this->getPersistenceIterator(
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$filter->getParameter('start'),
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$filter->getParameter('end')
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);
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$resultUnitCollection = new ResultUnitCollection();
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foreach ($results as $result){
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$resultUnitCollection->add(new ResultUnit($this->getResource($result['subject'])));
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}
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return $resultUnitCollection;
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}
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private function getPersistenceIterator(int $start, int $end): iterable
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{
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/** @var common_persistence_Persistence $persistence */
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$persistence = $this->getModel()->getPersistence();
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if (!($persistence instanceof common_persistence_SqlPersistence)) {
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throw new core_kernel_persistence_Exception(
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'Persistence implementation has to be common_persistence_SqlPersistence instance'
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);
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}
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$query = 'SELECT id, subject FROM statements WHERE (id BETWEEN :start AND :end) AND predicate = :predicate AND object IN (:class) ORDER BY id';
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$type['class'] = Connection::PARAM_STR_ARRAY;
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return new common_persistence_sql_QueryIterator(
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$persistence,
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$query,
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$this->getFilterArray($start, $end),
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$type
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);
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}
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private function getFilterArray(int $start, int $end): array
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{
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return [
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'start' => $start,
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'end' => $end,
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'predicate' => OntologyRdf::RDF_TYPE,
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'class' => array_unique($this->getTargetClasses()),
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];
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}
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}
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