Examples of org.apache.activemq.command.MessageDispatch

org.apache.activemq.command.MessageDispatch
@openwire :marshaller code="21"

    public Message receive() throws JMSException {
        checkClosed();
        checkMessageListener();


        sendPullCommand(0);
        MessageDispatch md = dequeue(-1);
        if (md == null) {
            return null;
        }


        beforeMessageIsConsumed(md);

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        }


        sendPullCommand(timeout);
        while (timeout > 0) {


            MessageDispatch md;
            if (info.getPrefetchSize() == 0) {
                md = dequeue(-1); // We let the broker let us know when we timeout.
            } else {
                md = dequeue(timeout);
            }

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    public Message receiveNoWait() throws JMSException {
        checkClosed();
        checkMessageListener();
        sendPullCommand(-1);


        MessageDispatch md;
        if (info.getPrefetchSize() == 0) {
            md = dequeue(-1); // We let the broker let us know when we
            // timeout.
        } else {
            md = dequeue(0);

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    private MessageAck makeAckForAllDeliveredMessages(byte type) {
        synchronized (deliveredMessages) {
            if (deliveredMessages.isEmpty())
                return null;


            MessageDispatch md = deliveredMessages.getFirst();
            MessageAck ack = new MessageAck(md, type, deliveredMessages.size());
            ack.setFirstMessageId(deliveredMessages.getLast().getMessage().getMessageId());
            return ack;
        }
    }

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                // optimizeAcknowledge
                if (!this.info.isBrowser()) {
                    synchronized(deliveredMessages) {
                        for (int i = 0; (i < deliveredMessages.size()) && (i < ackCounter); i++) {
                            // ensure we don't filter this as a duplicate
                            MessageDispatch md = deliveredMessages.removeLast();
                            session.connection.rollbackDuplicate(this, md.getMessage());
                        }
                    }
                }
            }
            synchronized(deliveredMessages) {
                rollbackPreviouslyDeliveredAndNotRedelivered();
                if (deliveredMessages.isEmpty()) {
                    return;
                }


                // use initial delay for first redelivery
                MessageDispatch lastMd = deliveredMessages.getFirst();
                final int currentRedeliveryCount = lastMd.getMessage().getRedeliveryCounter();
                if (currentRedeliveryCount > 0) {
                    redeliveryDelay = redeliveryPolicy.getNextRedeliveryDelay(redeliveryDelay);
                } else {
                    redeliveryDelay = redeliveryPolicy.getInitialRedeliveryDelay();
                }
                MessageId firstMsgId = deliveredMessages.getLast().getMessage().getMessageId();


                for (Iterator<MessageDispatch> iter = deliveredMessages.iterator(); iter.hasNext();) {
                    MessageDispatch md = iter.next();
                    md.getMessage().onMessageRolledBack();
                    // ensure we don't filter this as a duplicate
                    session.connection.rollbackDuplicate(this, md.getMessage());
                }


                if (redeliveryPolicy.getMaximumRedeliveries() != RedeliveryPolicy.NO_MAXIMUM_REDELIVERIES
                    && lastMd.getMessage().getRedeliveryCounter() > redeliveryPolicy.getMaximumRedeliveries()) {
                    // We need to NACK the messages so that they get sent to the

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     * called with deliveredMessages locked
     */
    private void removeFromDeliveredMessages(MessageId key) {
        Iterator<MessageDispatch> iterator = deliveredMessages.iterator();
        while (iterator.hasNext()) {
            MessageDispatch candidate = iterator.next();
            if (key.equals(candidate.getMessage().getMessageId())) {
                session.connection.rollbackDuplicate(this, candidate.getMessage());
                iterator.remove();
                break;
            }
        }
    }

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     * @throws JMSException
     */
    public boolean iterate() {
        MessageListener listener = this.messageListener.get();
        if (listener != null) {
            MessageDispatch md = unconsumedMessages.dequeueNoWait();
            if (md != null) {
                dispatch(md);
                return true;
            }
        }

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            if (o == null) {
                return null;
            }
            if (o instanceof MessageDispatch) {


                MessageDispatch dispatch = (MessageDispatch)o;
                if (dispatch.getMessage() == null) {
                    return null;
                }
                dispatch.setMessage(dispatch.getMessage().copy());
                dispatch.getMessage().setRedeliveryCounter(dispatch.getRedeliveryCounter());
                return dispatch.getMessage();
            }
        }
    }

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        // Now get the messages.
        Object m = connection.getDispatchQueue().poll(maxWait, TimeUnit.MILLISECONDS);
        int i = 0;
        while (m != null) {
            if (m instanceof MessageDispatch && ((MessageDispatch)m).getConsumerId().equals(consumerInfo.getConsumerId())) {
                MessageDispatch md = (MessageDispatch)m;
                if (md.getMessage() != null) {
                    i++;
                    connection.send(createAck(consumerInfo, md.getMessage(), 1, MessageAck.STANDARD_ACK_TYPE));
                } else {
                    break;
                }
            } else {
                skipped.add(m);

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            if (o == null) {
                return null;
            }
            if (o instanceof MessageDispatch) {


                MessageDispatch dispatch = (MessageDispatch)o;
                if (dispatch.getMessage() == null) {
                    return null;
                }
                dispatch.setMessage(dispatch.getMessage().copy());
                dispatch.getMessage().setRedeliveryCounter(dispatch.getRedeliveryCounter());
                return dispatch.getMessage();
            }
        }
    };

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Related Classes of org.apache.activemq.command.MessageDispatch

org.apache.activemq.ActiveMQConnection

org.apache.activemq.ActiveMQInputStream

org.apache.activemq.ActiveMQMessageConsumer

org.apache.activemq.ActiveMQSession

org.apache.activemq.ActiveMQSessionExecutor

org.apache.activemq.broker.BrokerTestSupport

org.apache.activemq.broker.ft.MasterConnector

org.apache.activemq.broker.region.DurableTopicSubscription

org.apache.activemq.broker.region.PrefetchSubscription

org.apache.activemq.broker.region.TopicSubscription

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