| /* |
| * Copyright 2016-present 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.onosproject.store; |
| |
| import static com.google.common.base.Preconditions.checkArgument; |
| |
| import java.util.Objects; |
| |
| import com.google.common.base.MoreObjects; |
| import com.google.common.collect.ComparisonChain; |
| |
| /** |
| * Timestamp based on logical sequence value. |
| * <p> |
| * LogicalTimestamps are ordered by their sequence values. |
| */ |
| public class LogicalTimestamp implements Timestamp { |
| |
| private final long value; |
| |
| public LogicalTimestamp(long value) { |
| this.value = value; |
| } |
| |
| @Override |
| public int compareTo(Timestamp o) { |
| checkArgument(o instanceof LogicalTimestamp, |
| "Must be LogicalTimestamp", o); |
| LogicalTimestamp that = (LogicalTimestamp) o; |
| |
| return ComparisonChain.start() |
| .compare(this.value, that.value) |
| .result(); |
| } |
| |
| @Override |
| public int hashCode() { |
| return Long.hashCode(value); |
| } |
| |
| @Override |
| public boolean equals(Object obj) { |
| if (this == obj) { |
| return true; |
| } |
| if (!(obj instanceof LogicalTimestamp)) { |
| return false; |
| } |
| LogicalTimestamp that = (LogicalTimestamp) obj; |
| return Objects.equals(this.value, that.value); |
| } |
| |
| @Override |
| public String toString() { |
| return MoreObjects.toStringHelper(getClass()) |
| .add("value", value) |
| .toString(); |
| } |
| |
| /** |
| * Returns the sequence value. |
| * |
| * @return sequence value |
| */ |
| public long value() { |
| return this.value; |
| } |
| } |