/**
* method supporting recursion through all criterions to give
* us a string array of tables from each criterion
* @return void
*/
private function addCriterionTable(AbstractCriterion $c, array &$s)
{
$s[] = $c->getTable();
foreach ($c->getClauses() as $clause) {
$this->addCriterionTable($clause, $s);
}
}
