Revert "SERVER-49117 Remove storage validation of '$' and '.' in field names for insert and update"

This reverts commit f1194464424569250152308e3cae1ecbade7fb71.

1 files changed, 3 insertions, 4 deletions

diff --git a/src/mongo/db/matcher/expression_parser.cpp b/src/mongo/db/matcher/expression_parser.cpp
index 1ef996ffed0..c4013697ebe 100644
--- a/src/mongo/db/matcher/expression_parser.cpp
+++ b/src/mongo/db/matcher/expression_parser.cpp
@@ -66,7 +66,6 @@
 #include "mongo/db/matcher/schema/expression_internal_schema_xor.h"
 #include "mongo/db/matcher/schema/json_schema_parser.h"
 #include "mongo/db/namespace_string.h"
-#include "mongo/db/query/dbref.h"
 #include "mongo/db/query/query_knobs_gen.h"
 #include "mongo/util/str.h"
 #include "mongo/util/string_map.h"
@@ -215,15 +214,15 @@ bool isDBRefDocument(const BSONObj& obj, bool allowIncompleteDBRef) {
         auto element = i.next();
         auto fieldName = element.fieldNameStringData();
         // $ref
-        if (!hasRef && dbref::kRefFieldName == fieldName) {
+        if (!hasRef && "$ref"_sd == fieldName) {
             hasRef = true;
         }
         // $id
-        else if (!hasID && dbref::kIdFieldName == fieldName) {
+        else if (!hasID && "$id"_sd == fieldName) {
             hasID = true;
         }
         // $db
-        else if (!hasDB && dbref::kDbFieldName == fieldName) {
+        else if (!hasDB && "$db"_sd == fieldName) {
             hasDB = true;
         }
     }