public function recordsAction(Request $request)
{
/** @var EntityManager $em */
$em = $this->getDoctrine()->getManager();
$slug = $request->get('slug', false);
$setParam = $request->get('set', false);
$fromParam = $request->get('from', false);
$untilParam = $request->get('until', false);
$this->throw404IfNotFound($slug);
$builder = $em->createQueryBuilder();
$builder->select('article')->from('OjsJournalBundle:Article', 'article');
$builder->join('article.journal', 'journal', 'WITH');
$builder->where($builder->expr()->eq('article.status', ArticleStatuses::STATUS_PUBLISHED));
$builder->andWhere($builder->expr()->eq('journal.slug', ':slug'))->setParameter('slug', $slug);
if ($fromParam) {
$from = new \DateTime();
$from->setTimestamp(strtotime($fromParam));
$comparison = $builder->expr()->gte('article.created', ':from');
$builder->andWhere($comparison)->setParameter('from', $from);
}
if ($untilParam) {
$until = new \DateTime();
$until->setTimestamp(strtotime($until));
$comparison = $builder->expr()->lte('article.created', ':until');
$builder->andWhere($comparison)->setParameter('until', $until);
}
$fileCache = $this->get('file_cache');
$resumptionToken = $request->get('resumptionToken');
if ($resumptionToken) {
$token = $fileCache->fetch($resumptionToken);
$currentPage = (int) $token['page'];
$setParam = $token['set'];
} else {
$currentPage = 1;
}
$generatedToken = md5(StringHelper::generateKey());
$fileCache->save($generatedToken, $currentPage + 1, 60 * 60 * 24);
if ($setParam) {
$builder->join('article.section', 'section', 'WITH');
$condition = $builder->expr()->eq('section.id', ':section');
$builder->andWhere($condition)->setParameter('section', $setParam);
}
$paginator = $this->get('knp_paginator');
/** @var AbstractPagination $records */
$records = $paginator->paginate($builder->getQuery(), $currentPage, 100);
$data = ['specType' => 'section', 'records' => $records, 'currentPage' => $currentPage, 'resumptionToken' => $generatedToken, 'metadataPrefix' => $request->get('metadataPrefix', 'oai_dc'), 'isLast' => $records->getTotalItemCount() >= $currentPage * 100];
return $this->response('OjsOAIBundle:Default:records.xml.twig', $data);
}
