HHH-13723 Hint sizing of ArrayList in ResultSetProcessingContextImpl

hibernate · Nov 11, 2019 · 66515a2 · 66515a2
1 parent 8744178
commit 66515a2
Showing 1 changed file with 2 additions and 1 deletion.
diff --git a/.../java/org/hibernate/loader/plan/exec/process/internal/ResultSetProcessingContextImpl.java b/.../java/org/hibernate/loader/plan/exec/process/internal/ResultSetProcessingContextImpl.java
@@ -281,8 +281,9 @@ void finishUpRow() {
 
 
 		// managing the running list of registrations ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+		final int sizeHint = currentRowHydratedEntityRegistrationList.size();
 		if ( hydratedEntityRegistrationList == null ) {
-			hydratedEntityRegistrationList = new ArrayList<>();
+			hydratedEntityRegistrationList = new ArrayList<>( sizeHint );
 		}
 		hydratedEntityRegistrationList.addAll( currentRowHydratedEntityRegistrationList );