/**
* @param array $associationMapping
* @param array $entityIds
* @param array $config
*
* @return array [['entityId' => mixed, 'relatedEntityId' => mixed], ...]
*/
public function getRelatedItemsIds($associationMapping, $entityIds, $config)
{
$limit = isset($config[ConfigUtil::MAX_RESULTS]) ? $config[ConfigUtil::MAX_RESULTS] : -1;
if ($limit > 0 && count($entityIds) > 1) {
$selectStmt = null;
$subQueries = [];
foreach ($entityIds as $id) {
$subQuery = $this->getRelatedItemsIdsQuery($associationMapping, [$id], $config);
$subQuery->setMaxResults($limit);
// We should wrap all subqueries with brackets for PostgreSQL queries with UNION and LIMIT
$subQueries[] = '(' . QueryUtils::getExecutableSql($subQuery) . ')';
if (null === $selectStmt) {
$mapping = QueryUtils::parseQuery($subQuery)->getResultSetMapping();
$selectStmt = sprintf('entity.%s AS entityId, entity.%s AS relatedEntityId', QueryUtils::getColumnNameByAlias($mapping, 'entityId'), QueryUtils::getColumnNameByAlias($mapping, 'relatedEntityId'));
}
}
$rsm = new ResultSetMapping();
$rsm->addScalarResult('entityId', 'entityId')->addScalarResult('relatedEntityId', 'relatedEntityId');
$qb = new SqlQueryBuilder($this->doctrineHelper->getEntityManager($associationMapping['targetEntity']), $rsm);
$qb->select($selectStmt)->from('(' . implode(' UNION ALL ', $subQueries) . ')', 'entity');
$rows = $qb->getQuery()->getScalarResult();
} else {
$query = $this->getRelatedItemsIdsQuery($associationMapping, $entityIds, $config);
if ($limit >= 0) {
$query->setMaxResults($limit);
}
$rows = $query->getScalarResult();
}
return $rows;
}
/**
* Query builder to get target entities in a single query
*
* @param array $groupedTargets
*
* @return SqlQueryBuilder
* @throws \Doctrine\ORM\Query\QueryException
*/
protected function getAssociatedTargetEntitiesQueryBuilder(array $groupedTargets)
{
/** @var EntityManager $objectManager */
$objectManager = $this->objectManager;
$selectStmt = null;
$subQueries = [];
foreach ($groupedTargets as $entityClass => $ids) {
$nameExpr = $this->getNameDQL($entityClass, 'e');
/** @var QueryBuilder $subQb */
$subQb = $objectManager->getRepository($entityClass)->createQueryBuilder('e')->select(sprintf('e.id AS id, \'%s\' AS entityClass, ' . ($nameExpr ?: '\'\'') . ' AS entityTitle', str_replace('\'', '\'\'', $entityClass)));
$subQb->where($subQb->expr()->in('e.id', $ids));
$subQuery = $subQb->getQuery();
$subQueries[] = QueryUtils::getExecutableSql($subQuery);
if (empty($selectStmt)) {
$mapping = QueryUtils::parseQuery($subQuery)->getResultSetMapping();
$selectStmt = sprintf('entity.%s AS id, entity.%s AS entity, entity.%s AS title', QueryUtils::getColumnNameByAlias($mapping, 'id'), QueryUtils::getColumnNameByAlias($mapping, 'entityClass'), QueryUtils::getColumnNameByAlias($mapping, 'entityTitle'));
}
}
$rsm = new ResultSetMapping();
$rsm->addScalarResult('id', 'id', Type::INTEGER)->addScalarResult('entity', 'entity')->addScalarResult('title', 'title');
$queryBuilder = new SqlQueryBuilder($objectManager, $rsm);
$queryBuilder->select($selectStmt)->from('(' . implode(' UNION ALL ', $subQueries) . ')', 'entity');
return $queryBuilder;
}