content: /**
   * 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 com.alibaba.jstorm.batch;
  
  import java.io.Serializable;
  import java.util.concurrent.atomic.AtomicLong;
  
  import org.apache.commons.lang.builder.ToStringBuilder;
  import org.apache.commons.lang.builder.ToStringStyle;
  
  public class BatchId implements Serializable {
      private static final long serialVersionUID = 5720810158625748049L;
      protected long id;
  
      // this is just for kryo
      protected BatchId() {
      }
  
      protected BatchId(long id) {
          this.id = id;
      }
  
      public long getId() {
          return id;
      }
  
      @Override
      public int hashCode() {
          final int prime = 31;
          int result = 1;
          result = prime * result + (int) (id ^ (id >>> 32));
          return result;
      }
  
      @Override
      public boolean equals(Object obj) {
          if (this == obj)
              return true;
          if (obj == null)
              return false;
          if (getClass() != obj.getClass())
              return false;
          BatchId other = (BatchId) obj;
          if (id != other.id)
              return false;
          return true;
      }
  
      @Override
      public String toString() {
          return ToStringBuilder.reflectionToString(this, ToStringStyle.SHORT_PREFIX_STYLE);
      }
  
      private static AtomicLong staticId = new AtomicLong(0);
  
      public static void updateId(long id) {
          staticId.set(id);
      }
  
      public static BatchId mkInstance() {
          long id = staticId.incrementAndGet();
  
          return new BatchId(id);
      }
  
      public static BatchId incBatchId(BatchId old) {
          long other = old.getId();
          return new BatchId(other + 1);
      }
  
  }
  