function getStatisticsImage($graph, $limit, $nntp, $language)
{
SpotTiming::start(__FUNCTION__);
$spotStatistics = new SpotStatistics($this->_db);
if (!array_key_exists($graph, $this->_spotImage->getValidStatisticsGraphs()) || !array_key_exists($limit, $this->_spotImage->getValidStatisticsLimits())) {
$data = $this->_spotImage->createErrorImage(400);
SpotTiming::stop(__FUNCTION__, array($graph, $limit, $nntp));
return $data;
}
# if
$lastUpdate = $this->_db->getLastUpdate($nntp['host']);
$resourceid = $spotStatistics->getResourceid($graph, $limit, $language);
$data = $this->_cache->getCache($resourceid, SpotCache::Statistics);
if (!$data || $this->_activeRetriever || !$this->_settings->get('prepare_statistics') && (int) $data['stamp'] < $lastUpdate) {
$data = $this->_spotImage->createStatistics($graph, $limit, $lastUpdate, $language);
$this->_cache->saveCache($resourceid, SpotCache::Statistics, $data['metadata'], $data['content']);
}
# if
$data['expire'] = true;
SpotTiming::stop(__FUNCTION__, array($graph, $limit, $nntp));
return $data;
}
