1 files changed, 14 insertions, 0 deletions
diff --git a/src/mongo/db/exec/document_value/document_metadata_fields.cpp b/src/mongo/db/exec/document_value/document_metadata_fields.cpp
index d33eee6c140..0532ed2e8cb 100644
--- a/src/mongo/db/exec/document_value/document_metadata_fields.cpp
+++ b/src/mongo/db/exec/document_value/document_metadata_fields.cpp
@@ -96,6 +96,9 @@ void DocumentMetadataFields::mergeWith(const DocumentMetadataFields& other) {
     if (!hasSearchSortValues() && other.hasSearchSortValues()) {
         setSearchSortValues(other.getSearchSortValues());
     }
+    if (!hasVectorSearchScore() && other.hasVectorSearchScore()) {
+        setVectorSearchScore(other.getVectorSearchScore());
+    }
 }
 
 void DocumentMetadataFields::copyFrom(const DocumentMetadataFields& other) {
@@ -135,6 +138,9 @@ void DocumentMetadataFields::copyFrom(const DocumentMetadataFields& other) {
     if (other.hasSearchSortValues()) {
         setSearchSortValues(other.getSearchSortValues());
     }
+    if (other.hasVectorSearchScore()) {
+        setVectorSearchScore(other.getVectorSearchScore());
+    }
 }
 
 size_t DocumentMetadataFields::getApproximateSize() const {
@@ -216,6 +222,10 @@ void DocumentMetadataFields::serializeForSorter(BufBuilder& buf) const {
         buf.appendNum(static_cast<char>(MetaType::kSearchSortValues + 1));
         getSearchSortValues().appendSelfToBufBuilder(buf);
     }
+    if (hasVectorSearchScore()) {
+        buf.appendNum(static_cast<char>(MetaType::kVectorSearchScore + 1));
+        buf.appendNum(getVectorSearchScore());
+    }
     buf.appendNum(static_cast<char>(0));
 }
 
@@ -256,6 +266,8 @@ void DocumentMetadataFields::deserializeForSorter(BufReader& buf, DocumentMetada
         } else if (marker == static_cast<char>(MetaType::kSearchSortValues) + 1) {
             out->setSearchSortValues(
                 BSONObj::deserializeForSorter(buf, BSONObj::SorterDeserializeSettings()));
+        } else if (marker == static_cast<char>(MetaType::kVectorSearchScore) + 1) {
+            out->setVectorSearchScore(buf.read<LittleEndian<double>>());
         } else {
             uasserted(28744, "Unrecognized marker, unable to deserialize buffer");
         }
@@ -317,6 +329,8 @@ const char* DocumentMetadataFields::typeNameToDebugString(DocumentMetadataFields
             return "timeseries bucket max time";
         case DocumentMetadataFields::kSearchSortValues:
             return "$search sort values";
+        case DocumentMetadataFields::kVectorSearchScore:
+            return "$vectorSearch distance";
         default:
             MONGO_UNREACHABLE;
     }