2 files changed, 10 insertions, 1 deletions
diff --git a/application-model/src/main/java/com/yahoo/vespa/applicationmodel/ApplicationInstanceReference.java b/application-model/src/main/java/com/yahoo/vespa/applicationmodel/ApplicationInstanceReference.java
index d8feec5af3b..570e0d632ed 100644
--- a/application-model/src/main/java/com/yahoo/vespa/applicationmodel/ApplicationInstanceReference.java
+++ b/application-model/src/main/java/com/yahoo/vespa/applicationmodel/ApplicationInstanceReference.java
@@ -33,6 +33,10 @@ public class ApplicationInstanceReference {
     @JsonValue
     @Override
     public String toString() {
+        return asString();
+    }
+
+    public String asString() {
         return tenantId.s() + ":" + applicationInstanceId.s();
     }
 
diff --git a/application-model/src/main/java/com/yahoo/vespa/applicationmodel/HostName.java b/application-model/src/main/java/com/yahoo/vespa/applicationmodel/HostName.java
index 0b1998059f0..6fea6846ec9 100644
--- a/application-model/src/main/java/com/yahoo/vespa/applicationmodel/HostName.java
+++ b/application-model/src/main/java/com/yahoo/vespa/applicationmodel/HostName.java
@@ -7,7 +7,7 @@ import java.util.Objects;
 /**
  * @author bjorncs
  */
-public class HostName {
+public class HostName implements Comparable<HostName> {
 
     private final String id;
 
@@ -40,4 +40,9 @@ public class HostName {
     public int hashCode() {
         return Objects.hash(id);
     }
+
+    @Override
+    public int compareTo(HostName o) {
+        return id.compareTo(o.id);
+    }
 }