1 files changed, 13 insertions, 0 deletions
diff --git a/searchlib/src/vespa/searchlib/query/tree/querybuilder.h b/searchlib/src/vespa/searchlib/query/tree/querybuilder.h
index a0788f0a777..9631e2afded 100644
--- a/searchlib/src/vespa/searchlib/query/tree/querybuilder.h
+++ b/searchlib/src/vespa/searchlib/query/tree/querybuilder.h
@@ -21,6 +21,7 @@
 
 #include "predicate_query_term.h"
 #include "node.h"
+#include "const_bool_nodes.h"
 #include <vespa/searchlib/query/weight.h>
 #include <stack>
 
@@ -98,6 +99,12 @@ public:
 // You may specialize these functions for your own traits class to have full
 // control of the query node instantiation.
 
+template <class NodeTypes>
+typename NodeTypes::TrueQueryNode *create_true() { return new typename NodeTypes::TrueQueryNode; }
+
+template <class NodeTypes>
+typename NodeTypes::FalseQueryNode *create_false() { return new typename NodeTypes::FalseQueryNode; }
+
 // Intermediate nodes
 template <class NodeTypes>
 typename NodeTypes::And *createAnd() { return new typename NodeTypes::And; }
@@ -328,6 +335,12 @@ public:
         adjustWeight(weight);
         return addTerm(create_nearest_neighbor_term<NodeTypes>(query_tensor_name, field_name, id, weight, target_num_hits, allow_approximate, explore_additional_hits, distance_threshold));
     }
+    typename NodeTypes::TrueQueryNode &add_true_node() {
+        return addTerm(create_true<NodeTypes>());
+    }
+    typename NodeTypes::FalseQueryNode &add_false_node() {
+        return addTerm(create_false<NodeTypes>());
+    }
 };
 
 }