1.1 --- a/org/sonews/util/TimeoutMap.java	Sun Aug 29 17:04:25 2010 +0200
     1.2 +++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.3 @@ -1,145 +0,0 @@
     1.4 -/*
     1.5 - *   SONEWS News Server
     1.6 - *   see AUTHORS for the list of contributors
     1.7 - *
     1.8 - *   This program is free software: you can redistribute it and/or modify
     1.9 - *   it under the terms of the GNU General Public License as published by
    1.10 - *   the Free Software Foundation, either version 3 of the License, or
    1.11 - *   (at your option) any later version.
    1.12 - *
    1.13 - *   This program is distributed in the hope that it will be useful,
    1.14 - *   but WITHOUT ANY WARRANTY; without even the implied warranty of
    1.15 - *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    1.16 - *   GNU General Public License for more details.
    1.17 - *
    1.18 - *   You should have received a copy of the GNU General Public License
    1.19 - *   along with this program.  If not, see <http://www.gnu.org/licenses/>.
    1.20 - */
    1.21 -
    1.22 -package org.sonews.util;
    1.23 -
    1.24 -import java.util.HashMap;
    1.25 -import java.util.HashSet;
    1.26 -import java.util.Map;
    1.27 -import java.util.Set;
    1.28 -import java.util.concurrent.ConcurrentHashMap;
    1.29 -
    1.30 -/**
    1.31 - * Implementation of a Map that will loose its stored values after a 
    1.32 - * configurable amount of time.
    1.33 - * This class may be used to cache config values for example.
    1.34 - * @author Christian Lins
    1.35 - * @since sonews/0.5.0
    1.36 - */
    1.37 -public class TimeoutMap<K,V> extends ConcurrentHashMap<K, V>
    1.38 -{
    1.39 -  
    1.40 -  private static final long serialVersionUID = 453453467700345L;
    1.41 -
    1.42 -  private int                    timeout     = 60000; // 60 sec
    1.43 -  private transient Map<K, Long> timeoutMap  = new HashMap<K, Long>();
    1.44 -  
    1.45 -  /**
    1.46 -   * Constructor.
    1.47 -   * @param timeout Timeout in milliseconds
    1.48 -   */
    1.49 -  public TimeoutMap(final int timeout)
    1.50 -  {
    1.51 -    this.timeout = timeout;
    1.52 -  }
    1.53 -  
    1.54 -  /**
    1.55 -   * Uses default timeout (60 sec).
    1.56 -   */
    1.57 -  public TimeoutMap()
    1.58 -  {
    1.59 -  }
    1.60 -  
    1.61 -  /**
    1.62 -   * 
    1.63 -   * @param key
    1.64 -   * @return true if key is still valid.
    1.65 -   */
    1.66 -  protected boolean checkTimeOut(Object key)
    1.67 -  {
    1.68 -    synchronized(this.timeoutMap)
    1.69 -    {
    1.70 -      if(this.timeoutMap.containsKey(key))
    1.71 -      {
    1.72 -        long keytime = this.timeoutMap.get(key);
    1.73 -        if((System.currentTimeMillis() - keytime) < this.timeout)
    1.74 -        {
    1.75 -          return true;
    1.76 -        }
    1.77 -        else
    1.78 -        {
    1.79 -          remove(key);
    1.80 -          return false;
    1.81 -        }
    1.82 -      }
    1.83 -      else
    1.84 -      {
    1.85 -        return false;
    1.86 -      }
    1.87 -    }
    1.88 -  }
    1.89 -  
    1.90 -  @Override
    1.91 -  public boolean containsKey(Object key)
    1.92 -  {
    1.93 -    return checkTimeOut(key);
    1.94 -  }
    1.95 -
    1.96 -  @Override
    1.97 -  public synchronized V get(Object key)
    1.98 -  {
    1.99 -    if(checkTimeOut(key))
   1.100 -    {
   1.101 -      return super.get(key);
   1.102 -    }
   1.103 -    else
   1.104 -    {
   1.105 -      return null;
   1.106 -    }
   1.107 -  }
   1.108 -
   1.109 -  @Override
   1.110 -  public V put(K key, V value)
   1.111 -  {
   1.112 -    synchronized(this.timeoutMap)
   1.113 -    {
   1.114 -      removeStaleKeys();
   1.115 -      this.timeoutMap.put(key, System.currentTimeMillis());
   1.116 -      return super.put(key, value);
   1.117 -    }
   1.118 -  }
   1.119 -
   1.120 -  /**
   1.121 -   * @param arg0
   1.122 -   * @return
   1.123 -   */
   1.124 -  @Override
   1.125 -  public V remove(Object arg0)
   1.126 -  {
   1.127 -    synchronized(this.timeoutMap)
   1.128 -    {
   1.129 -      this.timeoutMap.remove(arg0);
   1.130 -      V val = super.remove(arg0);
   1.131 -      return val;
   1.132 -    }
   1.133 -  }
   1.134 -
   1.135 -  protected void removeStaleKeys()
   1.136 -  {
   1.137 -    synchronized(this.timeoutMap)
   1.138 -    {
   1.139 -      Set<Object> keySet = new HashSet<Object>(this.timeoutMap.keySet());
   1.140 -      for(Object key : keySet)
   1.141 -      {
   1.142 -        // The key/value is removed by the checkTimeOut() method if true
   1.143 -        checkTimeOut(key);
   1.144 -      }
   1.145 -    }
   1.146 -  }
   1.147 -  
   1.148 -}