<?php /** * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License * as published by the Free Software Foundation; under version 2 * of the License (non-upgradable). * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. * * Copyright (c) 2017 (original work) Open Assessment Technologies SA (under the project TAO-PRODUCT); * */ namespace oat\taoQtiTest\models\creator; use common_exception_Error; use core_kernel_classes_Class; use core_kernel_classes_Resource; use oat\oatbox\service\ConfigurableService; use oat\tao\model\resources\ResourceLookup; use oat\tao\model\resources\TreeResourceLookup; use oat\taoItems\model\CategoryService; /** * Look up items and format them as a tree hierarchy * * @author Bertrand Chevrier <bertrand@taotesting.com> */ class TreeItemLookup extends ConfigurableService implements ItemLookup { use PermissionLookupTrait; public const SERVICE_ID = 'taoQtiTest/CreatorItems/tree'; public function getCategoryService(): CategoryService { /** @noinspection PhpIncompatibleReturnTypeInspection */ return $this->getServiceLocator()->get(CategoryService::SERVICE_ID); } public function getTreeResourceLookupService(): ResourceLookup { /** @noinspection PhpIncompatibleReturnTypeInspection */ return $this->getServiceLocator()->get(TreeResourceLookup::SERVICE_ID); } /** * Retrieve QTI Items in their hierarchy, for the given parameters as format them as tree. * * @param core_kernel_classes_Class $itemClass the item class * @param array $propertyFilters propUri/propValue to search items * @param int $offset for paging * @param int $limit for paging * * @return array the items * * @throws common_exception_Error */ public function getItems( core_kernel_classes_Class $itemClass, array $propertyFilters = [], $offset = 0, $limit = 30 ): array { $data = $this->getTreeResourceLookupService()->getResources($itemClass, [], $propertyFilters, $offset, $limit); $nodes = $this->formatTreeData($data); $nodes = $this->fillPermissions($nodes); return $nodes; } /** * Reformat the the tree : state and count * Add the item's categories * * @param array $treeData * * @return array the formatted data * * @throws common_exception_Error */ private function formatTreeData(array $treeData): array { foreach ($treeData as &$item) { if ($item['type'] === 'instance') { $item['categories'] = $this->getCategoryService()->getItemCategories( new core_kernel_classes_Resource($item['uri']) ); } elseif (isset($item['children'])) { $item['children'] = $this->formatTreeData($item['children']); } } return $treeData; } }