83 lines
2.9 KiB
PHP
83 lines
2.9 KiB
PHP
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<?php
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/**
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* OAI-PMH 2.0 Data Provider
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* Copyright (C) 2023 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\Database\Format;
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use OCC\OaiPmh2\Document;
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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 "ListMetadataFormats" request.
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* @see https://www.openarchives.org/OAI/openarchivesprotocol.html#ListMetadataFormats
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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 ListMetadataFormats extends Middleware
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{
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/**
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* Prepare the response body for verb "ListMetadataFormats".
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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 $request): void
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{
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/** @var ?string */
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$identifier = $request->getAttribute('identifier');
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$formats = Database::getInstance()->getMetadataFormats($identifier);
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if (count($formats) === 0) {
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if (!isset($identifier) || Database::getInstance()->idDoesExist($identifier)) {
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ErrorHandler::getInstance()->withError('noMetadataFormats');
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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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$listMetadataFormats = $document->createElement('ListMetadataFormats', '', true);
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/** @var Format $oaiFormat */
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foreach ($formats as $oaiFormat) {
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$metadataFormat = $document->createElement('metadataFormat');
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$listMetadataFormats->appendChild($metadataFormat);
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$metadataPrefix = $document->createElement('metadataPrefix', $oaiFormat->getPrefix());
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$metadataFormat->appendChild($metadataPrefix);
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$schema = $document->createElement('schema', $oaiFormat->getSchema());
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$metadataFormat->appendChild($schema);
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$metadataNamespace = $document->createElement('metadataNamespace', $oaiFormat->getNamespace());
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$metadataFormat->appendChild($metadataNamespace);
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}
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$this->preparedResponse = $document;
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}
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}
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