| /* |
| * |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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.apache.qpid.server.protocol.v1_0; |
| |
| import org.apache.qpid.server.protocol.v1_0.type.UnsignedInteger; |
| |
| public class SequenceNumber implements Comparable<SequenceNumber> |
| { |
| private volatile int _seqNo; |
| |
| public SequenceNumber(int seqNo) |
| { |
| _seqNo = seqNo; |
| } |
| |
| public SequenceNumber incr() |
| { |
| _seqNo++; |
| return this; |
| } |
| |
| public SequenceNumber decr() |
| { |
| _seqNo--; |
| return this; |
| } |
| |
| public SequenceNumber add(int i) |
| { |
| _seqNo+=i; |
| return this; |
| } |
| |
| @Override |
| public boolean equals(Object o) |
| { |
| if (this == o) |
| { |
| return true; |
| } |
| if (o == null || getClass() != o.getClass()) |
| { |
| return false; |
| } |
| |
| SequenceNumber that = (SequenceNumber) o; |
| |
| return _seqNo == that._seqNo; |
| } |
| |
| @Override |
| public int hashCode() |
| { |
| return _seqNo; |
| } |
| |
| @Override |
| public int compareTo(SequenceNumber o) |
| { |
| return _seqNo - o._seqNo; |
| } |
| |
| @Override |
| public String toString() |
| { |
| return "SN{" + _seqNo + '}'; |
| } |
| |
| public int intValue() |
| { |
| return _seqNo; |
| } |
| |
| public long longValue() |
| { |
| return ((long) _seqNo) & 0xFFFFFFFFL; |
| } |
| |
| public UnsignedInteger unsignedIntegerValue() |
| { |
| return UnsignedInteger.valueOf(_seqNo); |
| } |
| } |