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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) 2021 (original work) Open Assessment Technologies SA. |
| 19 | */ |
| 20 | |
| 21 | declare(strict_types=1); |
| 22 | |
| 23 | namespace oat\taoBackOffice\model\ListElement\Service; |
| 24 | |
| 25 | use core_kernel_classes_Class; |
| 26 | use oat\tao\model\Context\ContextInterface; |
| 27 | use oat\tao\model\Lists\Business\Domain\ValueCollection; |
| 28 | use oat\tao\model\Specification\ClassSpecificationInterface; |
| 29 | use oat\tao\model\Lists\Business\Service\ValueCollectionService; |
| 30 | use oat\tao\model\Lists\Business\Input\ValueCollectionSearchInput; |
| 31 | use oat\tao\model\Lists\Business\Domain\ValueCollectionSearchRequest; |
| 32 | use oat\taoBackOffice\model\ListElement\Context\ListElementsFinderContext; |
| 33 | use oat\taoBackOffice\model\ListElement\Contract\ListElementsFinderInterface; |
| 34 | |
| 35 | class ListElementsFinder implements ListElementsFinderInterface |
| 36 | { |
| 37 | /** @var ClassSpecificationInterface */ |
| 38 | private $remoteListClassSpecification; |
| 39 | |
| 40 | /** @var ValueCollectionService */ |
| 41 | private $valueCollectionService; |
| 42 | |
| 43 | /** @var int */ |
| 44 | private $localListElementsLimit; |
| 45 | |
| 46 | /** @var int */ |
| 47 | private $remoteListElementsLimit; |
| 48 | |
| 49 | public function __construct( |
| 50 | ClassSpecificationInterface $remoteListClassSpecification, |
| 51 | ValueCollectionService $valueCollectionService, |
| 52 | int $localListElementsLimit, |
| 53 | int $remoteListElementsLimit |
| 54 | ) { |
| 55 | $this->remoteListClassSpecification = $remoteListClassSpecification; |
| 56 | $this->valueCollectionService = $valueCollectionService; |
| 57 | $this->localListElementsLimit = $localListElementsLimit; |
| 58 | $this->remoteListElementsLimit = $remoteListElementsLimit; |
| 59 | } |
| 60 | |
| 61 | public function find(ContextInterface $context): ValueCollection |
| 62 | { |
| 63 | /** @var core_kernel_classes_Class $listClass */ |
| 64 | $listClass = $context->getParameter(ListElementsFinderContext::PARAMETER_LIST_CLASS); |
| 65 | |
| 66 | $request = new ValueCollectionSearchRequest(); |
| 67 | $request->setValueCollectionUri($listClass->getUri()); |
| 68 | |
| 69 | $totalCount = $this->valueCollectionService->count(new ValueCollectionSearchInput($request)); |
| 70 | |
| 71 | $this |
| 72 | ->setRequestOffset($request, $context) |
| 73 | ->setRequestLimit($request, $context); |
| 74 | |
| 75 | $valueCollection = $this->valueCollectionService->findAll(new ValueCollectionSearchInput($request)); |
| 76 | $valueCollection->setTotalCount($totalCount); |
| 77 | |
| 78 | return $valueCollection; |
| 79 | } |
| 80 | |
| 81 | private function setRequestOffset(ValueCollectionSearchRequest $request, ContextInterface $context): self |
| 82 | { |
| 83 | $offset = $context->getParameter(ListElementsFinderContext::PARAMETER_OFFSET, 0); |
| 84 | |
| 85 | if ($offset) { |
| 86 | $request->setOffset($offset); |
| 87 | } |
| 88 | |
| 89 | return $this; |
| 90 | } |
| 91 | |
| 92 | private function setRequestLimit(ValueCollectionSearchRequest $request, ContextInterface $context): void |
| 93 | { |
| 94 | $limit = $this->getLimit($context); |
| 95 | |
| 96 | if ($limit) { |
| 97 | $request->setLimit($limit); |
| 98 | } |
| 99 | } |
| 100 | |
| 101 | private function getLimit(ContextInterface $context): int |
| 102 | { |
| 103 | if ($context->getParameter(ListElementsFinderContext::PARAMETER_LIMIT) === null) { |
| 104 | /** @var core_kernel_classes_Class $listClass */ |
| 105 | $listClass = $context->getParameter(ListElementsFinderContext::PARAMETER_LIST_CLASS); |
| 106 | $isRemoteList = $this->remoteListClassSpecification->isSatisfiedBy($listClass); |
| 107 | |
| 108 | return $isRemoteList |
| 109 | ? $this->remoteListElementsLimit |
| 110 | : $this->localListElementsLimit; |
| 111 | } |
| 112 | |
| 113 | return $context->getParameter(ListElementsFinderContext::PARAMETER_LIMIT); |
| 114 | } |
| 115 | } |