/*
 * Copyright 2014 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.onos.store;

/**
 * Opaque version structure.
 * <p>
 * Classes implementing this interface must also implement
 * {@link #hashCode()} and {@link #equals(Object)}.
 */
public interface Timestamp extends Comparable<Timestamp> {

    @Override
    public abstract int hashCode();

    @Override
    public abstract boolean equals(Object obj);
}