Handle ReferenceFieldValue in document selection expression.

1 files changed, 10 insertions, 0 deletions

diff --git a/document/src/vespa/document/select/valuenodes.cpp b/document/src/vespa/document/select/valuenodes.cpp
index 026623cf83c..73fc1c6486b 100644
--- a/document/src/vespa/document/select/valuenodes.cpp
+++ b/document/src/vespa/document/select/valuenodes.cpp
@@ -6,6 +6,7 @@
 #include <vespa/document/base/exceptions.h>
 #include <vespa/document/update/documentupdate.h>
 #include <vespa/document/fieldvalue/fieldvalues.h>
+#include <vespa/document/fieldvalue/referencefieldvalue.h>
 #include <vespa/document/fieldvalue/iteratorhandler.h>
 #include <vespa/document/datatype/documenttype.h>
 #include <vespa/vespalib/util/md5.h>
@@ -303,6 +304,15 @@ IteratorHandler::getInternalValue(const FieldValue& fval) const
             const StringFieldValue& val(dynamic_cast<const StringFieldValue&>(fval));
             return std::make_unique<StringValue>(val.getAsString());
         }
+        case ReferenceFieldValue::classId:
+        {
+            const ReferenceFieldValue& val(dynamic_cast<const ReferenceFieldValue&>(fval));
+            if (val.hasValidDocumentId()) {
+                return std::make_unique<StringValue>(val.getDocumentId().toString());
+            } else {
+                return std::make_unique<InvalidValue>();
+            }
+        }
         case ArrayFieldValue::classId:
         {
             const ArrayFieldValue& val(dynamic_cast<const ArrayFieldValue&>(fval));