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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) 2014 (original work) Open Assessment Technologies SA (under the project TAO-PRODUCT); |
| 19 | * |
| 20 | */ |
| 21 | |
| 22 | namespace oat\taoQtiItem\model\qti\metadata\ontology; |
| 23 | |
| 24 | use oat\oatbox\event\EventManager; |
| 25 | use oat\oatbox\service\ServiceManager; |
| 26 | use oat\tao\model\event\MetadataModified; |
| 27 | use oat\taoQtiItem\model\qti\metadata\MetadataInjector; |
| 28 | use oat\taoQtiItem\model\qti\metadata\MetadataInjectionException; |
| 29 | use core_kernel_classes_Resource; |
| 30 | use core_kernel_classes_Property; |
| 31 | use InvalidArgumentException; |
| 32 | |
| 33 | class OntologyMetadataInjector implements MetadataInjector |
| 34 | { |
| 35 | private $injectionRules; |
| 36 | |
| 37 | public function __construct() |
| 38 | { |
| 39 | $this->setInjectionRules([]); |
| 40 | } |
| 41 | |
| 42 | public function addInjectionRule(array $path, $propertyUri, $value = null, $ontologyValue = null) |
| 43 | { |
| 44 | if (count($path) === 0) { |
| 45 | $msg = "The path argument must be a non-empty array."; |
| 46 | throw new InvalidArgumentException($msg); |
| 47 | } |
| 48 | |
| 49 | $injectionRules = $this->getInjectionRules(); |
| 50 | |
| 51 | $pathKey = implode('->', $path); |
| 52 | if (isset($injectionRules[$pathKey]) === false) { |
| 53 | $injectionRules[$pathKey] = []; |
| 54 | } |
| 55 | |
| 56 | $injectionRules[$pathKey][] = [$propertyUri, $value, $ontologyValue]; |
| 57 | $this->setInjectionRules($injectionRules); |
| 58 | } |
| 59 | |
| 60 | protected function setInjectionRules(array $injectionRules) |
| 61 | { |
| 62 | $this->injectionRules = $injectionRules; |
| 63 | } |
| 64 | |
| 65 | protected function getInjectionRules() |
| 66 | { |
| 67 | return $this->injectionRules; |
| 68 | } |
| 69 | |
| 70 | public function inject($target, array $values) |
| 71 | { |
| 72 | if (!$target instanceof core_kernel_classes_Resource) { |
| 73 | $msg = "The given target is not an instance of core_kernel_classes_Resource."; |
| 74 | throw new MetadataInjectionException($msg); |
| 75 | } |
| 76 | |
| 77 | $data = []; |
| 78 | |
| 79 | foreach ($values as $metadataValues) { |
| 80 | foreach ($metadataValues as $metadataValue) { |
| 81 | $lang = $metadataValue->getLanguage() ?: DEFAULT_LANG; |
| 82 | |
| 83 | if (($rule = $this->getRuleByValue($metadataValue->getPath(), $metadataValue->getValue())) !== false) { |
| 84 | // Direct Mapping. |
| 85 | if (!isset($data[$rule[0]])) { |
| 86 | $data[$rule[0]] = []; |
| 87 | } |
| 88 | if (!isset($data[$rule[0]][$lang])) { |
| 89 | $data[$rule[0]][$lang] = []; |
| 90 | } |
| 91 | |
| 92 | $data[$rule[0]][$lang][] = [$rule[2], $metadataValue]; |
| 93 | } elseif (($rule = $this->getRuleByPath($metadataValue->getPath())) !== false) { |
| 94 | if (!isset($data[$rule[0]])) { |
| 95 | $data[$rule[0]] = []; |
| 96 | } |
| 97 | if (!isset($data[$rule[0]][$lang])) { |
| 98 | $data[$rule[0]][$lang] = []; |
| 99 | } |
| 100 | |
| 101 | $data[$rule[0]][$lang][] = [$metadataValue->getValue(), $metadataValue]; |
| 102 | } |
| 103 | } |
| 104 | } |
| 105 | |
| 106 | // Cleanup impacted metadata, in case the $target is being overwritten. |
| 107 | foreach ($data as $propertyUri => $perLangData) { |
| 108 | foreach (array_keys($perLangData) as $lang) { |
| 109 | $target->removePropertyValueByLg(new core_kernel_classes_Property($propertyUri), $lang); |
| 110 | } |
| 111 | } |
| 112 | |
| 113 | // Inject new data in Ontology for target. |
| 114 | foreach ($data as $propertyUri => $perLangData) { |
| 115 | foreach ($perLangData as $lang => $d) { |
| 116 | foreach ($d as $actualData) { |
| 117 | $target->setPropertyValueByLg( |
| 118 | new core_kernel_classes_Property($propertyUri), |
| 119 | $actualData[0], |
| 120 | $lang |
| 121 | ); |
| 122 | |
| 123 | // Send events. |
| 124 | $eventManager = ServiceManager::getServiceManager()->get(EventManager::SERVICE_ID); |
| 125 | $metadata = $actualData[1]->getPath(); |
| 126 | $metadataUri = array_pop($metadata); |
| 127 | $eventManager->trigger(new MetadataModified($target, $metadataUri, $actualData[1]->getValue())); |
| 128 | } |
| 129 | } |
| 130 | } |
| 131 | } |
| 132 | |
| 133 | protected function getRuleByValue($path, $value) |
| 134 | { |
| 135 | $pathKey = implode('->', $path); |
| 136 | $rules = $this->getInjectionRules(); |
| 137 | |
| 138 | if (isset($rules[$pathKey]) === true) { |
| 139 | foreach ($rules[$pathKey] as $rule) { |
| 140 | if ($rule[1] === $value) { |
| 141 | return $rule; |
| 142 | } |
| 143 | } |
| 144 | } |
| 145 | |
| 146 | return false; |
| 147 | } |
| 148 | |
| 149 | protected function getRuleByPath($path) |
| 150 | { |
| 151 | $pathKey = implode('->', $path); |
| 152 | $rules = $this->getInjectionRules(); |
| 153 | if (isset($rules[$pathKey]) === true) { |
| 154 | return $rules[$pathKey][0]; |
| 155 | } |
| 156 | |
| 157 | return false; |
| 158 | } |
| 159 | } |