60 lines
2.1 KiB
PHP
60 lines
2.1 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) 2017 (original work) Open Assessment Technologies SA
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*
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*/
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namespace oat\taoQtiItem\model\qti\metadata\ontology;
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use oat\taoQtiItem\model\qti\metadata\extractors\LomMetadataExtractor;
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use oat\taoQtiItem\model\qti\metadata\MetadataExtractionException;
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use oat\taoQtiItem\model\qti\metadata\MetadataExtractor;
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use \core_kernel_classes_Resource;
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class OntologyMetadataExtractor extends OntologyMetadataRules implements MetadataExtractor
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{
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public function extract($resource)
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{
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if (! $resource instanceof core_kernel_classes_Resource) {
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throw new MetadataExtractionException(__('The given target is not an instance of core_kernel_classes_Resource'));
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}
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$metadataValues = [];
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/** @var LomMetadataExtractor $rule */
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foreach ($this->rules as $rules) {
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foreach ($rules as $rule) {
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$values = $rule->extract($resource);
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if (empty($values)) {
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continue;
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}
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$identifier = \tao_helpers_Uri::getUniqueId($resource->getUri());
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$path = $this->serializePath($rule->getPath());
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if (! isset($metadataValues[$path])) {
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$metadataValues[$identifier] = $values;
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} else {
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$metadataValues[$identifier] = array_merge($metadataValues[$identifier], $values);
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}
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}
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}
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return $metadataValues;
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}
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}
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