1 files changed, 50 insertions, 23 deletions
diff --git a/searchlib/src/main/java/com/yahoo/searchlib/rankingexpression/evaluation/StringValue.java b/searchlib/src/main/java/com/yahoo/searchlib/rankingexpression/evaluation/StringValue.java
index 2c2d5eead05..a585c989954 100644
--- a/searchlib/src/main/java/com/yahoo/searchlib/rankingexpression/evaluation/StringValue.java
+++ b/searchlib/src/main/java/com/yahoo/searchlib/rankingexpression/evaluation/StringValue.java
@@ -3,7 +3,6 @@ package com.yahoo.searchlib.rankingexpression.evaluation;
 
 import com.yahoo.javacc.UnicodeUtilities;
 import com.yahoo.searchlib.rankingexpression.rule.Function;
-import com.yahoo.searchlib.rankingexpression.rule.TruthOperator;
 import com.yahoo.tensor.Tensor;
 import com.yahoo.tensor.TensorType;
 
@@ -57,55 +56,83 @@ public class StringValue extends Value {
     }
 
     @Override
-    public Value add(Value value) {
-        return new StringValue(value + value.toString());
+    public Value not() {
+        throw new UnsupportedOperationException("String values ('" + value + "') do not support not");
     }
 
     @Override
-    public Value subtract(Value value) {
-        throw new UnsupportedOperationException("String values ('" + value + "') do not support subtraction");
+    public Value or(Value value) {
+        throw new UnsupportedOperationException("String values ('" + value + "') do not support or");
     }
 
     @Override
-    public Value multiply(Value value) {
-        throw new UnsupportedOperationException("String values ('" + value + "') do not support multiplication");
+    public Value and(Value value) {
+        throw new UnsupportedOperationException("String values ('" + value + "') do not support and");
     }
 
     @Override
-    public Value divide(Value value) {
-        throw new UnsupportedOperationException("String values ('" + value + "') do not support division");
+    public Value largerOrEqual(Value argument) {
+        throw new UnsupportedOperationException("String values ('" + value + "') do not support greaterEqual");
     }
 
     @Override
-    public Value modulo(Value value) {
-        throw new UnsupportedOperationException("String values ('" + value + "') do not support modulo");
+    public Value larger(Value argument) {
+        throw new UnsupportedOperationException("String values ('" + value + "') do not support greater");
     }
 
     @Override
-    public Value and(Value value) {
-        throw new UnsupportedOperationException("String values ('" + value + "') do not support and");
+    public Value smallerOrEqual(Value argument) {
+        throw new UnsupportedOperationException("String values ('" + value + "') do not support lessEqual");
     }
 
     @Override
-    public Value or(Value value) {
-        throw new UnsupportedOperationException("String values ('" + value + "') do not support or");
+    public Value smaller(Value argument) {
+        throw new UnsupportedOperationException("String values ('" + value + "') do not support less");
     }
 
     @Override
-    public Value not() {
-        throw new UnsupportedOperationException("String values ('" + value + "') do not support not");
+    public Value approxEqual(Value argument) {
+        return new BooleanValue(this.asDouble() == argument.asDouble());
     }
 
     @Override
-    public Value power(Value value) {
-        throw new UnsupportedOperationException("String values ('" + value + "') do not support ^");
+    public Value notEqual(Value argument) {
+        return new BooleanValue(this.asDouble() != argument.asDouble());
+    }
+
+    @Override
+    public Value equal(Value argument) {
+        return new BooleanValue(this.asDouble() == argument.asDouble());
     }
 
     @Override
-    public Value compare(TruthOperator operator, Value value) {
-        if (operator.equals(TruthOperator.EQUAL))
-            return new BooleanValue(this.equals(value));
-        throw new UnsupportedOperationException("String values ('" + value + "') cannot be compared except with '=='");
+    public Value add(Value value) {
+        return new StringValue(value + value.toString());
+    }
+
+    @Override
+    public Value subtract(Value value) {
+        throw new UnsupportedOperationException("String values ('" + value + "') do not support subtraction");
+    }
+
+    @Override
+    public Value multiply(Value value) {
+        throw new UnsupportedOperationException("String values ('" + value + "') do not support multiplication");
+    }
+
+    @Override
+    public Value divide(Value value) {
+        throw new UnsupportedOperationException("String values ('" + value + "') do not support division");
+    }
+
+    @Override
+    public Value modulo(Value value) {
+        throw new UnsupportedOperationException("String values ('" + value + "') do not support modulo");
+    }
+
+    @Override
+    public Value power(Value value) {
+        throw new UnsupportedOperationException("String values ('" + value + "') do not support ^");
     }
 
     @Override