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

                    return;
                }
            }
            try {
                SelectionKey key = serverChannel.register(this.selector, SelectionKey.OP_ACCEPT);
                key.attach(request);
                request.setKey(key);
            } catch (IOException ex) {
                throw new IOReactorException("Failure registering channel " +
                        "with the selector", ex);
            }

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                if (sessionRequest != null) {
                    sessionRequest.completed(session);
                }
            } catch (CancelledKeyException ex) {
                this.closedSessions.add(session);
                key.attach(null);
            }
        }
    }


    private void processClosedSessions() {

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                        "with the selector", ex);
            }


            SessionRequestHandle requestHandle = new SessionRequestHandle(request); 
            try {
                key.attach(requestHandle);
                key.interestOps(SelectionKey.OP_CONNECT);
            } catch (CancelledKeyException ex) {
                // Ignore cancelled keys
            }
        }

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            while (!stopped && (accepted = acceptedQueue.poll()) != null) {
                SelectionKey key = null;
                try {
                    key = accepted.register(selector, SelectionKey.OP_READ);
                    NIOServerCnxn cnxn = createConnection(accepted, key, this);
                    key.attach(cnxn);
                    addCnxn(cnxn);
                } catch (IOException e) {
                    // register, createConnection
                    cleanupSelectionKey(key);
                    fastCloseSock(accepted);

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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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                            chan.configureBlocking (false);
                            SelectionKey newkey = chan.register (selector, SelectionKey.OP_READ);
                            HttpConnection c = new HttpConnection ();
                            c.selectionKey = newkey;
                            c.setChannel (chan);
                            newkey.attach (c);
                            allConnections.add (c);
                        } else {
                            try {
                                if (key.isReadable()) {
                                    boolean closed;

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            /* re-register with selector */
            try {
                SocketChannel chan = c.getChannel();
                chan.configureBlocking (false);
                SelectionKey key = chan.register (selector, SelectionKey.OP_READ);
                key.attach (c);
                c.selectionKey = key;
                c.time = getTime() + IDLE_INTERVAL;
                idleConnections.add (c);
            } catch (IOException e) {
                dprint(e);

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                            chan.configureBlocking (false);
                            SelectionKey newkey = chan.register (selector, SelectionKey.OP_READ);
                            HttpConnection c = new HttpConnection ();
                            c.selectionKey = newkey;
                            c.setChannel (chan);
                            newkey.attach (c);
                            requestStarted (c);
                            allConnections.add (c);
                        } else {
                            try {
                                if (key.isReadable()) {

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      SelectionKey clientKey = null;
      try {
        clientKey = accepted.registerSelector(selector, SelectionKey.OP_READ);


        FrameBuffer frameBuffer = new FrameBuffer(accepted, clientKey, SelectorThread.this);
        clientKey.attach(frameBuffer);
      } catch (IOException e) {
        LOGGER.warn("Failed to register accepted connection to selector!", e);
        if (clientKey != null) {
          cleanupSelectionKey(clientKey);
        }

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        clientKey = client.registerSelector(selector, SelectionKey.OP_READ);


        // add this key to the map
        FrameBuffer frameBuffer = new FrameBuffer(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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