Examples of java.nio.channels.SelectionKey.attach()

java.nio.channels.SelectionKey.attach()
Attaches an object to the key. @param anObject the object to attach @return the last attached object

                            }
                        }
                    }catch (CancelledKeyException cx) {
                        if (sk!=null) {
                            sk.cancel();
                            sk.attach(null);
                        }
                    }
                }
            };
            events.offer(r);

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    public Object getAttachment(boolean remove) {
        Poller pol = getPoller();
        Selector sel = pol!=null?pol.getSelector():null;
        SelectionKey key = sel!=null?getIOChannel().keyFor(sel):null;
        Object att = key!=null?key.attachment():null;
        if (key != null && att != null && remove ) key.attach(null);
        return att;
    }


    public ApplicationBufferHandler getBufHandler() {
        return bufHandler;

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                case ChangeRequest.CHANGEOPS :
                    try {
                        key = (SelectionKey)todo.key;
                        if (key != null && key.isValid()) {
                            if (todo.att != null) {
                                key.attach(todo.att);
                                Link link = (Link)todo.att;
                                link.setKey(key);
                            }
                            key.interestOps(todo.ops);
                        }

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            sch.configureBlocking(false);
            Link link = new Link(addr, this);
            link.setSSLEngine(sslEngine);
            SelectionKey key = sch.register(_selector, SelectionKey.OP_READ);
            link.setKey(key);
            key.attach(link);
            // Notice we've already connected due to the handshake, so let's get the
            // remaining task done
            task = _factory.create(Task.Type.CONNECT, link, null);
        } catch (Exception e) {
          _selector.close();

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                            if (channel.isConnected())
                            {
                                key = channel.register(_selector,SelectionKey.OP_READ,att);
                                SelectChannelEndPoint endpoint = newEndPoint(channel,this,key);
                                key.attach(endpoint);
                                endpoint.dispatch();
                            }
                            else
                            {
                                channel.register(_selector,SelectionKey.OP_CONNECT,att);

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                            if (_nextSet==_setID)
                            {
                                // bind connections to this select set.
                                SelectionKey cKey = channel.register(_selectSet[_nextSet].getSelector(), SelectionKey.OP_READ);
                                SelectChannelEndPoint endpoint=newEndPoint(channel,_selectSet[_nextSet],cKey);
                                cKey.attach(endpoint);
                                if (endpoint != null)
                                    endpoint.dispatch();
                            }
                            else
                            {

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            } else {
                if (!key.isValid()) {
                    throw new CancelledKeyException();
                }
                key.interestOps(interestSet);
                key.attach(attachment);
            }
            return key;
        }
    }

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        Reader reader = getReader();
        try {
          reader.startAdd();
          SelectionKey readKey = reader.registerChannel(channel);
          c = getConnection(channel, System.currentTimeMillis());
          readKey.attach(c);
          synchronized (connectionList) {
            connectionList.add(numConnections, c);
            numConnections++;
          }
          if (LOG.isDebugEnabled())

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        // add this key to the map
          FrameBuffer frameBuffer = processorFactory_.isAsyncProcessor() ?
                  new CustomAsyncFrameBuffer(client, clientKey,SelectAcceptThread.this) :
                  new CustomFrameBuffer(client, clientKey,SelectAcceptThread.this);


          clientKey.attach(frameBuffer);
      } catch (TTransportException tte) {
        // something went wrong accepting.
        LOGGER.warn("Exception trying to accept!", tte);
        tte.printStackTrace();
        if (clientKey != null) cleanupSelectionKey(clientKey);

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        channel.configureBlocking(false);
        channel.socket().setTcpNoDelay(tcpNoDelay);
        SelectionKey readKey = channel.register(selector, SelectionKey.OP_READ);
        c = new Connection(readKey, channel, System.currentTimeMillis());
        readKey.attach(c);
        synchronized (connectionList) {
          connectionList.add(numConnections, c);
          numConnections++;
        }
        if (LOG.isDebugEnabled())

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