diff --git a/app/code/Magento/CatalogSearch/Model/Adapter/Mysql/Filter/Preprocessor.php b/app/code/Magento/CatalogSearch/Model/Adapter/Mysql/Filter/Preprocessor.php
index 51eb2077b80ea..c758e773f43c1 100644
--- a/app/code/Magento/CatalogSearch/Model/Adapter/Mysql/Filter/Preprocessor.php
+++ b/app/code/Magento/CatalogSearch/Model/Adapter/Mysql/Filter/Preprocessor.php
@@ -8,7 +8,9 @@
 use Magento\Catalog\Api\Data\ProductInterface;
 use Magento\Catalog\Model\Product;
 use Magento\Catalog\Model\ResourceModel\Eav\Attribute;
+use Magento\CatalogSearch\Model\Search\FilterMapper\VisibilityFilter;
 use Magento\CatalogSearch\Model\Search\TableMapper;
+use Magento\Customer\Model\Session;
 use Magento\Eav\Model\Config;
 use Magento\Framework\App\Config\ScopeConfigInterface;
 use Magento\Framework\App\ObjectManager;
@@ -20,10 +22,11 @@
 use Magento\Framework\Search\Adapter\Mysql\Filter\PreprocessorInterface;
 use Magento\Framework\Search\Request\FilterInterface;
 use Magento\Store\Model\Store;
-use Magento\Customer\Model\Session;
-use Magento\CatalogSearch\Model\Search\FilterMapper\VisibilityFilter;
 
 /**
+ * ElasticSearch search filter pre-processor.
+ *
+ * @SuppressWarnings(PHPMD.CookieAndSessionMisuse)
  * @SuppressWarnings(PHPMD.CouplingBetweenObjects)
  * @deprecated
  * @see \Magento\ElasticSearch
@@ -128,7 +131,7 @@ public function __construct(
     }
 
     /**
-     * {@inheritdoc}
+     * @inheritdoc
      */
     public function process(FilterInterface $filter, $isNegation, $query)
     {
@@ -136,10 +139,13 @@ public function process(FilterInterface $filter, $isNegation, $query)
     }
 
     /**
+     * Process query with field.
+     *
      * @param FilterInterface $filter
      * @param bool $isNegation
      * @param string $query
      * @return string
+     * @throws \Magento\Framework\Exception\LocalizedException
      */
     private function processQueryWithField(FilterInterface $filter, $isNegation, $query)
     {
@@ -204,19 +210,23 @@ private function processQueryWithField(FilterInterface $filter, $isNegation, $qu
                 ->where('main_table.store_id = ?', Store::DEFAULT_STORE_ID)
                 ->having($query);
 
-            $resultQuery = 'search_index.entity_id IN (
-                select entity_id from  ' . $this->conditionManager->wrapBrackets($select) . ' as filter
-            )';
+            $resultQuery = 'search_index.entity_id IN ('
+                . 'select entity_id from  '
+                . $this->conditionManager->wrapBrackets($select)
+                . ' as filter)';
         }
 
         return $resultQuery;
     }
 
     /**
+     * Process range numeric.
+     *
      * @param FilterInterface $filter
      * @param string $query
      * @param Attribute $attribute
      * @return string
+     * @throws \Exception
      */
     private function processRangeNumeric(FilterInterface $filter, $query, $attribute)
     {
@@ -238,14 +248,17 @@ private function processRangeNumeric(FilterInterface $filter, $query, $attribute
             ->where('main_table.store_id = ?', $currentStoreId)
             ->having($query);
 
-        $resultQuery = 'search_index.entity_id IN (
-                select entity_id from  ' . $this->conditionManager->wrapBrackets($select) . ' as filter
-            )';
+        $resultQuery = 'search_index.entity_id IN ('
+            . 'select entity_id from  '
+            . $this->conditionManager->wrapBrackets($select)
+            . ' as filter)';
 
         return $resultQuery;
     }
 
     /**
+     * Process term select.
+     *
      * @param FilterInterface $filter
      * @param bool $isNegation
      * @return string