Madan Jampani | 2546111 | 2015-02-17 14:17:29 -0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2015 Open Networking Laboratory |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | |
Madan Jampani | 393e0f0 | 2015-02-12 07:35:39 +0530 | [diff] [blame] | 17 | package org.onosproject.store.service; |
Madan Jampani | 94c2353 | 2015-02-05 17:40:01 -0800 | [diff] [blame] | 18 | |
| 19 | import com.google.common.base.MoreObjects; |
| 20 | |
| 21 | /** |
| 22 | * Versioned value. |
| 23 | * |
| 24 | * @param <V> value type. |
| 25 | */ |
| 26 | public class Versioned<V> { |
| 27 | |
| 28 | private final V value; |
| 29 | private final long version; |
| 30 | |
| 31 | /** |
| 32 | * Constructs a new versioned value. |
| 33 | * @param value value |
| 34 | * @param version version |
| 35 | */ |
| 36 | public Versioned(V value, long version) { |
| 37 | this.value = value; |
| 38 | this.version = version; |
| 39 | } |
| 40 | |
| 41 | /** |
| 42 | * Returns the value. |
| 43 | * |
| 44 | * @return value. |
| 45 | */ |
| 46 | public V value() { |
| 47 | return value; |
| 48 | } |
| 49 | |
| 50 | /** |
| 51 | * Returns the version. |
| 52 | * |
| 53 | * @return version |
| 54 | */ |
| 55 | public long version() { |
| 56 | return version; |
| 57 | } |
| 58 | |
| 59 | @Override |
| 60 | public String toString() { |
| 61 | return MoreObjects.toStringHelper(this) |
| 62 | .add("value", value) |
| 63 | .add("version", version) |
| 64 | .toString(); |
| 65 | } |
| 66 | } |