QueryFactory.php

1. 9.x drupal/core/lib/Drupal/Core/Entity/Query/QueryFactory.php
2. 9.x drupal/core/modules/field/modules/field_sql_storage/lib/Drupal/field_sql_storage/Entity/QueryFactory.php

<?php

/**
 * @file
 * Definition of Drupal\field_sql_storage\Entity\QueryFactory.
 */
namespace Drupal\field_sql_storage\Entity;

use Drupal\Core\Database\Connection;

/**
 * Factory class creating entity query objects for the SQL backend.
 */
class QueryFactory {
  function __construct(Connection $connection) {
    $this->connection = $connection;
  }
  function get($entity_type, $conjunction = 'AND') {
    return new Query($entity_type, $conjunction, $this->connection);
  }

}