Add isEmpty() to FetchVector and FlagData

2 files changed, 4 insertions, 0 deletions

diff --git a/flags/src/main/java/com/yahoo/vespa/flags/FetchVector.java b/flags/src/main/java/com/yahoo/vespa/flags/FetchVector.java
index 4cce7a9bc2a..866d4782a2a 100644
--- a/flags/src/main/java/com/yahoo/vespa/flags/FetchVector.java
+++ b/flags/src/main/java/com/yahoo/vespa/flags/FetchVector.java
@@ -82,6 +82,8 @@ public class FetchVector {
         return map;
     }
 
+    public boolean isEmpty() { return map.isEmpty(); }
+
     /** Returns a new FetchVector, identical to {@code this} except for its value in {@code dimension}. */
     public FetchVector with(Dimension dimension, String value) {
         return makeFetchVector(merged -> merged.put(dimension, value));
diff --git a/flags/src/main/java/com/yahoo/vespa/flags/json/FlagData.java b/flags/src/main/java/com/yahoo/vespa/flags/json/FlagData.java
index 64c4bbe7616..c4079380a8c 100644
--- a/flags/src/main/java/com/yahoo/vespa/flags/json/FlagData.java
+++ b/flags/src/main/java/com/yahoo/vespa/flags/json/FlagData.java
@@ -52,6 +52,8 @@ public class FlagData {
         return id;
     }
 
+    public boolean isEmpty() { return rules.isEmpty() && defaultFetchVector.isEmpty(); }
+
     public Optional<RawFlag> resolve(FetchVector fetchVector) {
         return rules.stream()
                 .filter(rule -> rule.match(defaultFetchVector.with(fetchVector)))