TimedObject.java

package com.spun.util;

import com.spun.util.logger.SimpleLogger;

public class TimedObject
{
  private Object object           = null;
  private long   timeOutInMillis  = 1000;
  private long   lastTimeAccessed = 0;
  /***********************************************************************/
  public TimedObject(long timeOutInMillis)
  {
    this.timeOutInMillis = timeOutInMillis;
  }
  /***********************************************************************/
  public Object get()
  {
    touched();
    return object;
  }
  /***********************************************************************/
  private synchronized void touched()
  {
    try
    {
      boolean launch = (lastTimeAccessed == 0);
      this.lastTimeAccessed = System.currentTimeMillis();
      if (launch)
      {
        new ThreadLauncher(this, "clean");
      }
    }
    catch (Throwable t)
    {
      SimpleLogger.warning(t);
    }
  }
  /***********************************************************************/
  public void clean()
  {
    try
    {
      while (System.currentTimeMillis() < (lastTimeAccessed + timeOutInMillis))
      {
        long diff = (lastTimeAccessed + timeOutInMillis) - System.currentTimeMillis();
        Thread.sleep(diff);
      }
    }
    catch (Throwable t)
    {
      SimpleLogger.warning(t);
    }
    synchronized (this)
    {
      this.object = null;
      this.lastTimeAccessed = 0;
    }
  }
  /***********************************************************************/
  public void set(Object object)
  {
    touched();
    this.object = object;
  }
  /***********************************************************************/
  /***********************************************************************/
}