Allow for faster hashcode then tostring.

2 files changed, 4 insertions, 1 deletions

diff --git a/searchlib/src/main/java/com/yahoo/searchlib/rankingexpression/rule/ExpressionNode.java b/searchlib/src/main/java/com/yahoo/searchlib/rankingexpression/rule/ExpressionNode.java
index dba0da7301d..dfcdf1e2662 100755
--- a/searchlib/src/main/java/com/yahoo/searchlib/rankingexpression/rule/ExpressionNode.java
+++ b/searchlib/src/main/java/com/yahoo/searchlib/rankingexpression/rule/ExpressionNode.java
@@ -19,7 +19,7 @@ import java.util.Deque;
 public abstract class ExpressionNode implements Serializable {
 
     @Override
-    public final int hashCode() {
+    public int hashCode() {
         return toString().hashCode();
     }
 
diff --git a/searchlib/src/main/java/com/yahoo/searchlib/rankingexpression/rule/ReferenceNode.java b/searchlib/src/main/java/com/yahoo/searchlib/rankingexpression/rule/ReferenceNode.java
index e15ce158e83..7312863fa26 100755
--- a/searchlib/src/main/java/com/yahoo/searchlib/rankingexpression/rule/ReferenceNode.java
+++ b/searchlib/src/main/java/com/yahoo/searchlib/rankingexpression/rule/ReferenceNode.java
@@ -42,6 +42,9 @@ public final class ReferenceNode extends CompositeNode {
         return reference.name();
     }
 
+    public int hashCode() {
+        return reference.hashCode();
+    }
     /** Returns the arguments, never null */
     public Arguments getArguments() { return reference.arguments(); }