Add getNamePrefix to get the prefix before any '.'

1 files changed, 5 insertions, 0 deletions

diff --git a/searchcommon/src/vespa/searchcommon/attribute/iattributevector.h b/searchcommon/src/vespa/searchcommon/attribute/iattributevector.h
index c7993503107..c432606f7f0 100644
--- a/searchcommon/src/vespa/searchcommon/attribute/iattributevector.h
+++ b/searchcommon/src/vespa/searchcommon/attribute/iattributevector.h
@@ -71,6 +71,11 @@ public:
      **/
     virtual const vespalib::string & getName() const = 0;
 
+    vespalib::stringref getNamePrefix() const {
+        vespalib::stringref name = getName();
+        return name.substr(0, name.find('.'));
+    }
+
     /**
      * Returns the number of documents stored in this attribute vector.
      *