1 files changed, 13 insertions, 0 deletions

diff --git a/common/storage/key.h b/common/storage/key.h
index 151c333..a5b92bb 100644
--- a/common/storage/key.h
+++ b/common/storage/key.h
@@ -46,6 +46,11 @@ public:
     QByteArray toDisplayByteArray() const;
     static Identifier fromDisplayByteArray(const QByteArray &bytes);
 
+    bool isNull() const;
+
+    bool operator==(const Identifier &other) const;
+    bool operator!=(const Identifier &other) const;
+
 private:
     explicit Identifier(const QUuid &uid) : uid(uid) {}
     QUuid uid;
@@ -67,6 +72,9 @@ public:
     static Revision fromDisplayByteArray(const QByteArray &bytes);
     qint64 toQint64() const;
 
+    bool operator==(const Revision &other) const;
+    bool operator!=(const Revision &other) const;
+
 private:
     qint64 rev;
 };
@@ -89,6 +97,11 @@ public:
     const Revision &revision() const;
     void setRevision(const Revision &newRev);
 
+    bool isNull() const;
+
+    bool operator==(const Key &other) const;
+    bool operator!=(const Key &other) const;
+
 private:
     Identifier id;
     Revision rev;