flattenCriteriaCollections example

/** * @param array<string, CriteriaCollection> $criteriaCollections * * @return array{0: array<string, array<string>>, 1: array<string, array<string, Criteria>>} */
    private function optimizeCriteriaObjects(array $criteriaCollections): array
    {
        $directReads = [];
        $searches = [];

        $criteriaCollection = $this->flattenCriteriaCollections($criteriaCollections);

        foreach ($criteriaCollection as $definition => $criteriaObjects) {
            $directReads[$definition] = [[]];
            $searches[$definition] = [];

            foreach ($criteriaObjects as $criteria) {
                if ($this->canBeMerged($criteria)) {
                    $directReads[$definition][] = $criteria->getIds();
                } else {
                    $criteriaHash = $this->hash($criteria);
                    $criteria->addExtension('criteriaHash', new ArrayEntity(['hash' => $criteriaHash]));