groupbasedpolicy/src/main/java/org/opendaylight/groupbasedpolicy/renderer/ofoverlay/flow/ActionComparator.java

   1 /*
   2  * Copyright (c) 2014 Cisco Systems, Inc. and others.  All rights reserved.
   3  *
   4  * This program and the accompanying materials are made available under the
   5  * terms of the Eclipse Public License v1.0 which accompanies this distribution,
   6  * and is available at http://www.eclipse.org/legal/epl-v10.html
   7  */
   8
   9 package org.opendaylight.groupbasedpolicy.renderer.ofoverlay.flow;
  10
  11 import java.util.Comparator;
  12
  13 import org.opendaylight.yang.gen.v1.urn.opendaylight.action.types.rev131112.action.list.Action;
  14
  15 import com.google.common.collect.ComparisonChain;
  16 import com.google.common.collect.Ordering;
  17
  18 public class ActionComparator implements Comparator<Action> {
  19     public static final ActionComparator INSTANCE = new ActionComparator();
  20
  21     @Override
  22     public int compare(Action arg0, Action arg1) {
  23         return ComparisonChain.start()
  24                 .compare(arg0.getOrder(), arg1.getOrder(),
  25                          Ordering.natural().nullsLast())
  26                 .result();
  27     }
  28
  29 }