* * 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, either version 3 of the License, or * (at your option) any later version. * * 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, see . */ declare(strict_types=1); namespace OCC\OaiPmh2\Middleware; use OCC\OaiPmh2\Database; use OCC\OaiPmh2\Document; use OCC\OaiPmh2\Entity\Format; use OCC\OaiPmh2\Middleware; use Psr\Http\Message\ServerRequestInterface; /** * Process the "ListMetadataFormats" request. * @see https://www.openarchives.org/OAI/openarchivesprotocol.html#ListMetadataFormats * * @author Sebastian Meyer * @package OAIPMH2 */ class ListMetadataFormats extends Middleware { /** * Prepare the response body for verb "ListMetadataFormats". * * @param ServerRequestInterface $request The incoming request * * @return void */ protected function prepareResponse(ServerRequestInterface $request): void { /** @var ?string */ $identifier = $request->getAttribute('identifier'); $formats = Database::getInstance()->getMetadataFormats($identifier); if (count($formats) === 0) { if (!isset($identifier) || Database::getInstance()->idDoesExist($identifier)) { ErrorHandler::getInstance()->withError('noMetadataFormats'); } else { ErrorHandler::getInstance()->withError('idDoesNotExist'); } return; } $document = new Document($request); $listMetadataFormats = $document->createElement('ListMetadataFormats', '', true); /** @var Format $oaiFormat */ foreach ($formats as $oaiFormat) { $metadataFormat = $document->createElement('metadataFormat'); $listMetadataFormats->appendChild($metadataFormat); $metadataPrefix = $document->createElement('metadataPrefix', $oaiFormat->getPrefix()); $metadataFormat->appendChild($metadataPrefix); $schema = $document->createElement('schema', $oaiFormat->getSchema()); $metadataFormat->appendChild($schema); $metadataNamespace = $document->createElement('metadataNamespace', $oaiFormat->getNamespace()); $metadataFormat->appendChild($metadataNamespace); } $this->preparedResponse = $document; } }