function exportIssues(&$journal, &$issues, $outputFile = null)
{
$this->import('NativeExportDom');
$doc =& XMLCustomWriter::createDocument('issues', NATIVE_DTD_ID, NATIVE_DTD_URL);
$issuesNode =& XMLCustomWriter::createElement($doc, 'issues');
XMLCustomWriter::appendChild($doc, $issuesNode);
foreach ($issues as $issue) {
$issueNode =& NativeExportDom::generateIssueDom($doc, $journal, $issue);
XMLCustomWriter::appendChild($issuesNode, $issueNode);
}
if (!empty($outputFile)) {
if (($h = fopen($outputFile, 'w')) === false) {
return false;
}
fwrite($h, XMLCustomWriter::getXML($doc));
fclose($h);
} else {
header("Content-Type: application/xml");
header("Cache-Control: private");
header("Content-Disposition: attachment; filename=\"issues.xml\"");
XMLCustomWriter::printXML($doc);
}
return true;
}
