Unit test that struct field with index and exact match gives expected

log warning.

1 files changed, 4 insertions, 0 deletions

diff --git a/config-model/src/main/java/com/yahoo/schema/processing/TypedTransformProvider.java b/config-model/src/main/java/com/yahoo/schema/processing/TypedTransformProvider.java
index 8ccc8870419..3d4934ed841 100644
--- a/config-model/src/main/java/com/yahoo/schema/processing/TypedTransformProvider.java
+++ b/config-model/src/main/java/com/yahoo/schema/processing/TypedTransformProvider.java
@@ -29,6 +29,10 @@ public abstract class TypedTransformProvider extends ValueTransformProvider {
     protected final boolean requiresTransform(Expression exp) {
         if (exp instanceof OutputExpression) {
             String fieldName = ((OutputExpression)exp).getFieldName();
+            if (fieldName == null) {
+                // Incomplete output expressions never require a transform.
+                return false;
+            }
             if (exp instanceof AttributeExpression) {
                 Attribute attribute = schema.getAttribute(fieldName);
                 if (attribute == null)