1 files changed, 5 insertions, 0 deletions
diff --git a/src/mongo/db/query/projection.h b/src/mongo/db/query/projection.h
index 9987dd641db..914567e87ed 100644
--- a/src/mongo/db/query/projection.h
+++ b/src/mongo/db/query/projection.h
@@ -46,6 +46,7 @@ struct ProjectionDependencies {
     // Whether the entire document is required to do the projection.
     bool requiresDocument = false;
     bool hasExpressions = false;
+    bool containsElemMatch = false;
 
     // Which fields are necessary to perform the projection, or boost::none if all are required.
     boost::optional<std::set<std::string>> requiredFields;
@@ -137,6 +138,10 @@ public:
             _deps.metadataRequested.none() && !_deps.requiresDocument && !_deps.hasExpressions;
     }
 
+    bool containsElemMatch() const {
+        return _deps.containsElemMatch;
+    }
+
 private:
     ProjectionPathASTNode _root;
     ProjectType _type;