function _search($what, $callback_fn, $query, $order = '')
{
include_once "lib/TextSearchQuery.php";
// $dbh = $GLOBALS['request']->getDbh();
//TODO: check if the db is mysql resp. capable of google like search.
// postgresql tsearch2 for example
// See TextSearchQuery.php
$search = new TextSearchQuery($what);
$callback = new WikiMethodCb($this, $callback_fn);
$search_clause = $search->makeSqlClause($callback);
$result = $this->_dbh->genericSqlIter($query . " " . $search_clause . " " . $order);
}
