97 lines
3.3 KiB
PHP
97 lines
3.3 KiB
PHP
<?php
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/**
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* OAI-PMH 2.0 Data Provider
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* Copyright (C) 2024 Sebastian Meyer <sebastian.meyer@opencultureconsulting.com>
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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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, see <http://www.gnu.org/licenses/>.
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*/
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declare(strict_types=1);
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namespace OCC\OaiPmh2\Middleware;
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use OCC\OaiPmh2\Database;
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use OCC\OaiPmh2\Document;
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use OCC\OaiPmh2\Entity\Format;
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use OCC\OaiPmh2\Middleware;
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use Psr\Http\Message\ServerRequestInterface;
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/**
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* Process the "GetRecord" request.
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* @see https://www.openarchives.org/OAI/openarchivesprotocol.html#GetRecord
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*
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* @author Sebastian Meyer <sebastian.meyer@opencultureconsulting.com>
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* @package opencultureconsulting/oai-pmh2
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*/
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class GetRecord extends Middleware
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{
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/**
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* Prepare the response body for verb "GetRecord".
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*
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* @param ServerRequestInterface $request The incoming request
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*
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* @return void
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*/
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protected function prepareResponse(ServerRequestInterface $request): void
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{
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$params = $request->getAttributes();
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/** @var Format */
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$format = Database::getInstance()->getEntityManager()->getReference(Format::class, $params['metadataPrefix']);
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$oaiRecord = Database::getInstance()->getRecord($params['identifier'], $format);
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if (!isset($oaiRecord)) {
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if (Database::getInstance()->idDoesExist($params['identifier'])) {
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ErrorHandler::getInstance()->withError('cannotDisseminateFormat');
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} else {
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ErrorHandler::getInstance()->withError('idDoesNotExist');
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}
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return;
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}
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$document = new Document($request);
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$getRecord = $document->createElement('GetRecord', '', true);
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$record = $document->createElement('record');
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$getRecord->appendChild($record);
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$header = $document->createElement('header');
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if ($oaiRecord->getContent() === null) {
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$header->setAttribute('status', 'deleted');
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}
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$record->appendChild($header);
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$identifier = $document->createElement('identifier', $oaiRecord->getIdentifier());
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$header->appendChild($identifier);
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$datestamp = $document->createElement('datestamp', $oaiRecord->getLastChanged()->format('Y-m-d\TH:i:s\Z'));
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$header->appendChild($datestamp);
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foreach ($oaiRecord->getSets() as $set) {
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$setSpec = $document->createElement('setSpec', $set->getName());
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$header->appendChild($setSpec);
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}
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if ($oaiRecord->getContent() !== null) {
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$metadata = $document->createElement('metadata');
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$record->appendChild($metadata);
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$data = $document->importData($oaiRecord->getContent());
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$metadata->appendChild($data);
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}
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$this->preparedResponse = $document;
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}
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}
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