/**
* Modifies the given query and adds the parameters necessary
* for result grouping.
*
* @param Query $query The query to modify
* @return Query The modified query with grouping parameters
*/
public function modifyQuery(Query $query)
{
$query->setGrouping();
$query->setNumberOfResultsPerGroup($this->findHighestGroupResultsLimit());
if (!empty($this->groupingConfiguration['numberOfGroups'])) {
$query->setNumberOfGroups($this->groupingConfiguration['numberOfGroups']);
}
$configuredGroups = $this->groupingConfiguration['groups.'];
foreach ($configuredGroups as $groupName => $groupConfiguration) {
if (isset($groupConfiguration['field'])) {
$query->addGroupField($groupConfiguration['field']);
} elseif (isset($groupConfiguration['query'])) {
$query->addGroupQuery($groupConfiguration['query']);
}
if (isset($groupConfiguration['sortBy'])) {
$query->addGroupSorting($groupConfiguration['sortBy']);
}
}
return $query;
}