public static function getAliasByChain(QueryChain $chain)
{
$alias = array();
$elements = $chain->getAllElements();
// add prefix of init entity
if (count($elements) > 2) {
$alias[] = $chain->getFirstElement()->getAliasFragment();
}
// add other members of chain
/** @var QueryChainElement[] $elements */
$elements = array_slice($elements, 1);
foreach ($elements as $element) {
$fragment = $element->getAliasFragment();
if (strlen($fragment)) {
$alias[] = $fragment;
}
}
return join('_', $alias);
}
