Package com.mchange.v2.holders

Source Code of com.mchange.v2.holders.SynchronizedIntHolder

/*
* Distributed as part of c3p0 v.0.9.1.1
*
* Copyright (C) 2005 Machinery For Change, Inc.
*
* Author: Steve Waldman <swaldman@mchange.com>
*
* This library is free software; you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License version 2.1, as
* published by the Free Software Foundation.
*
* This software is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this software; see the file LICENSE.  If not, write to the
* Free Software Foundation, Inc., 59 Temple Place, Suite 330,
* Boston, MA 02111-1307, USA.
*/


package com.mchange.v2.holders;

import java.io.*;
import com.mchange.v2.ser.UnsupportedVersionException;

public class SynchronizedIntHolder implements ThreadSafeIntHolder, Serializable
{
    transient int value;

    public SynchronizedIntHolder( int value )
    { this.value = value; }

    public SynchronizedIntHolder()
    { this(0); }

    public synchronized int getValue()
    { return value; }

    public synchronized void setValue(int value)
    { this.value = value; }

    public synchronized void increment()
    { ++value; }

    public synchronized void decrement()
    { --value; }

    //Serialization
    static final long serialVersionUID = 1; //override to take control of versioning
    private final static short VERSION = 0x0001;
   
    private void writeObject(ObjectOutputStream out) throws IOException
    {
  out.writeShort(VERSION);
  out.writeInt(value);
    }
   
    private void readObject(ObjectInputStream in) throws IOException
    {
  short version = in.readShort();
  switch (version)
      {
      case 0x0001:
    this.value = in.readInt();
    break;
      default:
    throw new UnsupportedVersionException(this, version);
      }
    }
}
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