Sho SHIMIZU | 31f37ed | 2016-01-08 18:45:54 -0800 | [diff] [blame] | 1 | /* |
Brian O'Connor | a09fe5b | 2017-08-03 21:12:30 -0700 | [diff] [blame] | 2 | * Copyright 2016-present Open Networking Foundation |
Sho SHIMIZU | 31f37ed | 2016-01-08 18:45:54 -0800 | [diff] [blame] | 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 | package org.onlab.util; |
| 17 | |
| 18 | import com.google.common.collect.ComparisonChain; |
| 19 | |
| 20 | /** |
| 21 | * Representation of bandwidth. |
| 22 | * Use the static factory method corresponding to the unit (like Kbps) you desire on instantiation. |
| 23 | */ |
| 24 | final class LongBandwidth implements Bandwidth { |
| 25 | |
| 26 | private final long bps; |
| 27 | |
| 28 | /** |
| 29 | * Creates a new instance with given bandwidth. |
| 30 | * |
| 31 | * @param bps bandwidth value to be assigned |
| 32 | */ |
| 33 | LongBandwidth(long bps) { |
| 34 | this.bps = bps; |
| 35 | } |
| 36 | |
| 37 | // Constructor for serialization |
| 38 | private LongBandwidth() { |
| 39 | this.bps = 0; |
| 40 | } |
| 41 | /** |
| 42 | * Returns bandwidth in bps. |
| 43 | * |
| 44 | * @return bandwidth in bps. |
| 45 | */ |
| 46 | public double bps() { |
| 47 | return bps; |
| 48 | } |
| 49 | |
| 50 | /** |
| 51 | * Returns a Bandwidth whose value is (this + value). |
| 52 | * |
| 53 | * @param value value to be added to this Frequency |
| 54 | * @return this + value |
| 55 | */ |
| 56 | public Bandwidth add(Bandwidth value) { |
| 57 | if (value instanceof LongBandwidth) { |
| 58 | return Bandwidth.bps(this.bps + ((LongBandwidth) value).bps); |
| 59 | } |
| 60 | return Bandwidth.bps(this.bps + value.bps()); |
| 61 | } |
| 62 | |
| 63 | /** |
| 64 | * Returns a Bandwidth whose value is (this - value). |
| 65 | * |
| 66 | * @param value value to be added to this Frequency |
| 67 | * @return this - value |
| 68 | */ |
| 69 | public Bandwidth subtract(Bandwidth value) { |
| 70 | if (value instanceof LongBandwidth) { |
| 71 | return Bandwidth.bps(this.bps - ((LongBandwidth) value).bps); |
| 72 | } |
| 73 | return Bandwidth.bps(this.bps - value.bps()); |
| 74 | } |
| 75 | |
| 76 | @Override |
| 77 | public int compareTo(Bandwidth other) { |
| 78 | if (other instanceof LongBandwidth) { |
| 79 | return ComparisonChain.start() |
| 80 | .compare(this.bps, ((LongBandwidth) other).bps) |
| 81 | .result(); |
| 82 | } |
| 83 | return ComparisonChain.start() |
| 84 | .compare(this.bps, other.bps()) |
| 85 | .result(); |
| 86 | } |
| 87 | |
| 88 | @Override |
| 89 | public boolean equals(Object obj) { |
| 90 | if (obj == this) { |
| 91 | return true; |
| 92 | } |
| 93 | |
| 94 | if (obj instanceof Bandwidth) { |
| 95 | return this.compareTo((Bandwidth) obj) == 0; |
| 96 | } |
| 97 | |
| 98 | return false; |
| 99 | } |
| 100 | |
| 101 | @Override |
| 102 | public int hashCode() { |
| 103 | return Long.hashCode(bps); |
| 104 | } |
| 105 | |
| 106 | @Override |
| 107 | public String toString() { |
| 108 | return String.valueOf(this.bps); |
| 109 | } |
| 110 | } |