function exportIssues(&$journal, &$issues, $outputFile = null)
{
$this->import('PubMedExportDom');
$doc =& PubMedExportDom::generatePubMedDom();
$articleSetNode =& PubMedExportDom::generateArticleSetDom($doc);
$sectionDao = DAORegistry::getDAO('SectionDAO');
$publishedArticleDao = DAORegistry::getDAO('PublishedArticleDAO');
foreach ($issues as $issue) {
foreach ($sectionDao->getByIssueId($issue->getId()) as $section) {
foreach ($publishedArticleDao->getPublishedArticlesBySectionId($section->getId(), $issue->getId()) as $article) {
$articleNode = PubMedExportDom::generateArticleDom($doc, $journal, $issue, $section, $article);
XMLCustomWriter::appendChild($articleSetNode, $articleNode);
}
}
}
if (!empty($outputFile)) {
if (($h = fopen($outputFile, 'w')) === false) {
return false;
}
fwrite($h, XMLCustomWriter::getXML($doc));
fclose($h);
} else {
header("Content-Type: application/xml");
header("Cache-Control: private");
header("Content-Disposition: attachment; filename=\"pubmed.xml\"");
XMLCustomWriter::printXML($doc);
}
return true;
}
