Examples of org.gudy.azureus2.core3.util.LightHashMap$EntrySet$EntrySetIterator

org.gudy.azureus2.core3.util.LightHashMap
A lighter (on memory) hash map
Advantages over HashMap:
- Lower memory footprint
- Everything is stored in a single array, this might improve cache performance (not verified)
- Read-only operations on Key and Value iterators should be concurrency-safe (Entry iterators are not) but they might return null values unexpectedly under concurrent modification (not verified)
Disadvantages:
- removal is implemented with thombstone-keys, this can significantly increase the lookup time if many values are removed. Use compactify() for scrubbing
- entry set iterators and thus transfers to other maps are slower than compareable implementations
- the map does not store hashcodes and relies on either the key-objects themselves caching them (such as strings) or a fast computation of hashcodes
- concurrent modification detection is not as fail-fast as HashMap as no modification counter is used and only structural differences are noted
@author Aaron Grunthal @create 28.11.2007

          break;
        }
        
        payload_buffer.flip();
        
        messages.add( new GenericMessage( msg_type, msg_desc, new DirectByteBuffer( payload_buffer ), false ));
        
        buffers[1]  = null;
      }
      
      total_read += bytes_read;

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    if( core_msg == null ) {
      return plug_msg.create( data );
    }
    
    try{
      return new MessageAdapter( core_msg.deserialize( new DirectByteBuffer( data ), (byte)1 ) );
    }
    catch( com.aelitis.azureus.core.peermanager.messaging.MessageException e ) {
      throw new MessageException( e.getMessage() );
    }
  }

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    }
    
    ByteBuffer[] bbs = plug_msg.getPayload();
    DirectByteBuffer[] dbbs = new DirectByteBuffer[ bbs.length ];  //TODO cache it???
    for( int i=0; i < bbs.length; i++ ) {
      dbbs[i] = new DirectByteBuffer( bbs[i] );
    }
    return dbbs;
  }

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            public void run() {
              StringWriter sw = new StringWriter();
              
              PrintWriter  pw = new PrintWriter( sw );
                  
              IndentWriter iw = new IndentWriter( pw );
              
              NetworkAdmin admin = NetworkAdmin.getSingleton();
              
              admin.generateDiagnostics( iw );

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      showDHTStats( ci );
    
    } else if (subCommand.equalsIgnoreCase("nat") || subCommand.equalsIgnoreCase("n")) {


      IndentWriter  iw = new IndentWriter( new PrintWriter( ci.out ));
      
      iw.setForce( true );
      
      NetworkAdmin.getSingleton().logNATStatus( iw );
    
    } else if (subCommand.equalsIgnoreCase("stats") || subCommand.equalsIgnoreCase("s")) {

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    Map         localizationPaths,
    Collection       resource_bundles,
    int          initCapacity)  
  {
    this.initCapacity = initCapacity;
    messages = new LightHashMap(initCapacity);


    locale = main.getLocale();


      // use a somewhat decent initial capacity, proper calculation would require java 1.6
    
    addResourceMessages( main );
    
    synchronized (localizationPaths)
    {
      for (Iterator iter = localizationPaths.keySet().iterator(); iter.hasNext();){
        String localizationPath = (String) iter.next();
        ClassLoader classLoader = (ClassLoader) localizationPaths.get(localizationPath);


        addPluginBundle(localizationPath, classLoader);
      }
    }


    if (resource_bundles != null) {
      synchronized (resource_bundles)
      {
        for (Iterator itr = resource_bundles.iterator(); itr.hasNext();) {
          addResourceMessages((ResourceBundle)itr.next());
        }
      }


    }
    
    used_messages = new LightHashMap( messages.size());
    
    synchronized( bundle_map ){
      
      bundle_map.put( this, NULL_OBJECT );

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  }
  
  protected Iterator
  getKeysLight()
  {
    Map m = new LightHashMap(loadMessages());
    
    return( m.keySet().iterator());
  }

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      }
    }
    
    if ( clean_count > 5 ){
    
      Map  compact_um = new LightHashMap( used_messages.size() + 16 );
      
      compact_um.putAll( used_messages );
      
      used_messages = compact_um;
      
      return( false );

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      Map  result;
      
      if ( scratch_file_is == null ){
        
        result = new LightHashMap();
        
      }else{
      
          // System.out.println( "read cache file " + scratch_file_name + " for " + this );


        
        Properties p = new Properties();
        
        InputStream  fis = scratch_file_is;
        
        try{
                  
          p.load( fis );
          
          fis.close();
          
          scratch_file_is = new FileInputStream( scratch_file_name );
          
          messages = new LightHashMap();
          
          messages.putAll( p );
          
          result = messages;
          
        }catch( Throwable e ){
          
          if ( fis != null ){
            
            try{
              fis.close();
              
            }catch( Throwable f ){
            }
          }
          
          Debug.out( "Failed to load message bundle scratch file", e );
          
          scratch_file_name.delete();
          
          scratch_file_is = null;
          
          result = new LightHashMap();
        }
      }
      
      if ( added_strings != null ){

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      null_values = null;
    }
  }
  
  public void clearUsedMessagesMap(int initialCapacity) {
    used_messages = new LightHashMap(initialCapacity);
    if (null_values != null) {
      null_values = new ArrayList(0);
    }
  }

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