1 files changed, 45 insertions, 0 deletions
diff --git a/framework/src/onos/core/api/src/main/java/org/onosproject/net/AnnotationsUtil.java b/framework/src/onos/core/api/src/main/java/org/onosproject/net/AnnotationsUtil.java
new file mode 100644
index 00000000..d43a304d
--- /dev/null
+++ b/framework/src/onos/core/api/src/main/java/org/onosproject/net/AnnotationsUtil.java
@@ -0,0 +1,45 @@
+/*
+ * Copyright 2014 Open Networking Laboratory
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package org.onosproject.net;
+
+/**
+ * Utility for processing annotations.
+ */
+public final class AnnotationsUtil {
+
+    public static boolean isEqual(Annotations lhs, Annotations rhs) {
+        if (lhs == rhs) {
+            return true;
+        }
+        if (lhs == null || rhs == null) {
+            return false;
+        }
+
+        if (!lhs.keys().equals(rhs.keys())) {
+            return false;
+        }
+
+        for (String key : lhs.keys()) {
+            if (!lhs.value(key).equals(rhs.value(key))) {
+                return false;
+            }
+        }
+        return true;
+    }
+
+    // not to be instantiated
+    private AnnotationsUtil() {}
+}