/**
* Responds to the two main List verbs, includes resumption and limiting.
*
* @param string $verb OAI-PMH verb for the request
* @param string $metadataPrefix Metadata prefix
* @param int $cursor Offset in response to begin output at
* @param mixed $set Optional set argument
* @param string $from Optional from date argument
* @param string $until Optional until date argument
* @uses createResumptionToken()
*/
private function listResponse($verb, $metadataPrefix, $cursor, $set, $from, $until)
{
$listLimit = 30;
$itemTable = new OaiFinds();
$items = $itemTable->getRecords($cursor, $set, $from, $until);
$totals = $itemTable->getCountAllFinds($set, $from, $until);
$rows = $totals['0']['c'];
if (count($items) == 0) {
$this->throwError(self::OAI_ERR_NO_RECORDS_MATCH, 'No records match the given criteria');
} else {
if ($verb == 'ListIdentifiers') {
$method = 'appendHeader';
} else {
if ($verb == 'ListRecords') {
$method = 'appendRecord';
}
}
$verbElement = $this->document->createElement($verb);
$this->document->documentElement->appendChild($verbElement);
foreach ($items as $item) {
$record = new $this->metadataFormats[$metadataPrefix]($item, $verbElement);
$record->{$method}();
}
$total = $cursor + $listLimit;
if ($rows > $total) {
$token = $this->createResumptionToken($verb, $metadataPrefix, $cursor, $set, $from, $until);
$tokenElement = $this->document->createElement('resumptionToken', $token->id);
$tokenElement->setAttribute('expirationDate', self::dbToUtc($token->expiration));
$tokenElement->setAttribute('completeListSize', $rows);
$tokenElement->setAttribute('cursor', $cursor + $listLimit);
$verbElement->appendChild($tokenElement);
} else {
if ($cursor != 0) {
$tokenElement = $this->document->createElement('resumptionToken');
$verbElement->appendChild($tokenElement);
}
}
}
}
