Implement methods to compare objects in classes representing unit
Methods are added to the following class.
- Bandwidth
- Frequency
To reduce redundant code, RichComparable interface is defined.
Change-Id: Iec96bee9754c6dfca62255b8b4068925d3be13a1
diff --git a/utils/misc/src/main/java/org/onlab/util/RichComparable.java b/utils/misc/src/main/java/org/onlab/util/RichComparable.java
new file mode 100644
index 0000000..8a49bba
--- /dev/null
+++ b/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;
+ }
+}