/**
* Gets the index entry from memcache/apc DB.
*/
private function load_index()
{
if (!$this->db) {
return;
}
if ($this->index !== null) {
return;
}
$index_key = $this->ikey();
if ($this->type == 'memcache') {
$data = $this->db->get($index_key);
} else {
if ($this->type == 'apc') {
$data = apc_fetch($index_key);
}
}
$this->index = $data ? unserialize($data) : array();
}
