1 files changed, 45 insertions, 0 deletions
diff --git a/framework/src/onos/utils/misc/src/main/java/org/onlab/util/RichComparable.java b/framework/src/onos/utils/misc/src/main/java/org/onlab/util/RichComparable.java
new file mode 100644
index 00000000..8a49bba9
--- /dev/null
+++ b/framework/src/onos/utils/misc/src/main/java/org/onlab/util/RichComparable.java
@@ -0,0 +1,45 @@
+/*
+ * Copyright 2015 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.onlab.util;
+
+import static com.google.common.base.Preconditions.checkNotNull;
+
+/**
+ * Extends useful methods for comparison to {@link Comparable} interface.
+ *
+ * @param <T> type of instance to be compared
+ */
+public interface RichComparable<T> extends Comparable<T> {
+    /**
+     * Compares if this object is less than the specified object.
+     *
+     * @param other the object to be compared
+     * @return true if this object is less than the specified object
+     */
+    default boolean isLessThan(T other) {
+        return compareTo(checkNotNull(other)) < 0;
+    }
+
+    /**
+     * Compares if this object is greater than the specified object.
+     *
+     * @param other the object to be compared
+     * @return true if this object is less thant the specified object
+     */
+    default boolean isGreaterThan(T other) {
+        return compareTo(checkNotNull(other)) > 0;
+    }
+}