Empty search iterator is strict.

2 files changed, 7 insertions, 0 deletions

diff --git a/searchlib/src/vespa/searchlib/queryeval/emptysearch.cpp b/searchlib/src/vespa/searchlib/queryeval/emptysearch.cpp
index 0ff4de00177..bab047827ad 100644
--- a/searchlib/src/vespa/searchlib/queryeval/emptysearch.cpp
+++ b/searchlib/src/vespa/searchlib/queryeval/emptysearch.cpp
@@ -15,6 +15,12 @@ EmptySearch::doUnpack(uint32_t)
 {
 }
 
+EmptySearch::Trinary
+EmptySearch::is_strict() const
+{
+    return Trinary::True;
+}
+
 EmptySearch::EmptySearch()
     : SearchIterator()
 {
diff --git a/searchlib/src/vespa/searchlib/queryeval/emptysearch.h b/searchlib/src/vespa/searchlib/queryeval/emptysearch.h
index c03c533deb1..12d7430922c 100644
--- a/searchlib/src/vespa/searchlib/queryeval/emptysearch.h
+++ b/searchlib/src/vespa/searchlib/queryeval/emptysearch.h
@@ -16,6 +16,7 @@ protected:
         SearchIterator::initRange(begin, end);
         setAtEnd();
     }
+    virtual Trinary is_strict() const override;
 
 public:
     EmptySearch();