/**
* Builds a filter group and, recursively, constructs a tree of conditions for the filters
*
* @param QueryBuilder $queryBuilder
* @param Filter $filterDefinition
*
* @throws \Exception
* @return Andx|Orx
*/
protected function buildFilterGroup(QueryBuilder $queryBuilder, Filter $filterDefinition)
{
// Container for the expressions to add to the $queryBuilder
$filterConditionType = $filterDefinition->getConditionType();
if ($filterConditionType == Filter::CONDITION_TYPE_AND) {
$expressions = $queryBuilder->expr()->andX();
} elseif ($filterConditionType == Filter::CONDITION_TYPE_OR) {
$expressions = $queryBuilder->expr()->orX();
} else {
throw new \Exception("Unknown condition type {$filterConditionType} on the filter.");
}
// Loop through all the filters in the collection
$this->addExpressionsForFilter($expressions, $filterDefinition, $queryBuilder);
return $expressions;
}
