1 files changed, 9 insertions, 5 deletions
diff --git a/vespajlib/src/main/java/com/yahoo/tensor/functions/Merge.java b/vespajlib/src/main/java/com/yahoo/tensor/functions/Merge.java
index adc84225a63..2b9dc709e0e 100644
--- a/vespajlib/src/main/java/com/yahoo/tensor/functions/Merge.java
+++ b/vespajlib/src/main/java/com/yahoo/tensor/functions/Merge.java
@@ -70,11 +70,6 @@ public class Merge<NAMETYPE extends Name> extends PrimitiveTensorFunction<NAMETY
     }
 
     @Override
-    public String toString(ToStringContext<NAMETYPE> context) {
-        return "merge(" + argumentA.toString(context) + ", " + argumentB.toString(context) + ", " + merger + ")";
-    }
-
-    @Override
     public TensorType type(TypeContext<NAMETYPE> context) {
         return outputType(argumentA.type(context), argumentB.type(context));
     }
@@ -87,6 +82,15 @@ public class Merge<NAMETYPE extends Name> extends PrimitiveTensorFunction<NAMETY
         return evaluate(a, b, mergedType, merger);
     }
 
+
+    @Override
+    public String toString(ToStringContext<NAMETYPE> context) {
+        return "merge(" + argumentA.toString(context) + ", " + argumentB.toString(context) + ", " + merger + ")";
+    }
+
+    @Override
+    public int hashCode() { return Objects.hash("merge", argumentA, argumentB, merger); }
+
     static Tensor evaluate(Tensor a, Tensor b, TensorType mergedType, DoubleBinaryOperator combinator) {
         // Choose merge algorithm
         if (hasSingleIndexedDimension(a) && hasSingleIndexedDimension(b) && a.type().dimensions().get(0).name().equals(b.type().dimensions().get(0).name()))