function run()
{
$update = new HTMLCacheUpdate($this->title, $this->table);
$fromField = $update->getFromField();
$conds = $update->getToCondition();
if ($this->start) {
$conds[] = "{$fromField} >= {$this->start}";
}
if ($this->end) {
$conds[] = "{$fromField} <= {$this->end}";
}
$dbr =& wfGetDB(DB_SLAVE);
$res = $dbr->select($this->table, $fromField, $conds, __METHOD__);
$update->invalidateIDs(new ResultWrapper($dbr, $res));
$dbr->freeResult($res);
return true;
}
