Package org.codehaus.activemq.service

Examples of org.codehaus.activemq.service.QueueListEntry

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    /**
     * Called when an active subscriber has closed. This resets all MessagePtrs
     */
    public synchronized void reset() throws JMSException {
        QueueListEntry entry = messagePtrs.getFirstEntry();
        while (entry != null) {
            MessagePointer pointer = (MessagePointer) entry.getElement();
            if (pointer.isDispatched()) {
                pointer.reset();
                pointer.setRedelivered(true);
            }
            else {
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    public synchronized void onAcknowledgeTransactedMessageBeforeCommit(MessageAck ack) throws JMSException {
        doMessageConsume(ack, false);
    }

    public synchronized void redeliverMessage(MessageContainer container, MessageAck ack) throws JMSException {
        QueueListEntry entry = messagePtrs.getFirstEntry();
        while (entry != null) {
            MessagePointer pointer = (MessagePointer) entry.getElement();
            if (pointer.getMessageIdentity().getMessageID().equals(ack.getMessageID())) {
                break;
            }
            entry = messagePtrs.getNextEntry(entry);
        }
        if (entry != null) {
            MessagePointer pointer = (MessagePointer) entry.getElement();
            if (pointer != null) {
                unconsumedMessagesDispatched.increment();
                //System.out.println("Incremented unconsumed count to: " + unconsumedMessagesDispatched.get());
                pointer.reset();
                pointer.setRedelivered(true);
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    public synchronized ActiveMQMessage[] getMessagesToDispatch() throws JMSException {
        if (usePrefetch) {
            return getMessagesWithPrefetch();
        }
        List tmpList = new ArrayList();
        QueueListEntry entry = messagePtrs.getFirstEntry();
        while (entry != null) {
            MessagePointer pointer = (MessagePointer) entry.getElement();
            if (!pointer.isDispatched()) {
                ActiveMQMessage msg = pointer.getContainer().getMessage(pointer.getMessageIdentity());
                if (msg != null) {
                    if (pointer.isDispatched() || pointer.isRedelivered()) {
                        //already dispatched - so mark as redelivered
                        msg.setJMSRedelivered(true);
                    }
                    pointer.setDispatched(true);
                    tmpList.add(msg);
                }
                else {
                    //the message is probably expired
                    log.info("Message probably expired: " + msg);
                    QueueListEntry discarded = entry;
                    entry = messagePtrs.getPrevEntry(discarded);
                    messagePtrs.remove(discarded);
                }
            }
            entry = messagePtrs.getNextEntry(entry);
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    public void close() throws JMSException {
        if (started.get()) {
            stop();
        }
        queue.close();
        QueueListEntry entry = subscriptions.getFirstEntry();
        while (entry != null) {
            TransientQueueSubscription ts = (TransientQueueSubscription) entry.getElement();
            ts.close();
            entry = subscriptions.getNextEntry(entry);
        }
        subscriptions.clear();
    }
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                targeted = false;
                if (!subscriptions.isEmpty()) {
                    message = (ActiveMQMessage) queue.dequeue(2000);
                    if (message != null) {
                        if (!message.isExpired()) {
                            QueueListEntry entry = subscriptions.getFirstEntry();
                            while (entry != null) {
                                TransientQueueSubscription ts = (TransientQueueSubscription) entry.getElement();
                                if (ts.isTarget(message)) {
                                    targeted = true;
                                    if (ts.canAcceptMessages()) {
                                        ts.doDispatch(message);
                                        message = null;
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        }
    }

    private TransientQueueSubscription findMatch(ConsumerInfo info) throws JMSException {
        TransientQueueSubscription result = null;
        QueueListEntry entry = subscriptions.getFirstEntry();
        while (entry != null) {
            TransientQueueSubscription ts = (TransientQueueSubscription) entry.getElement();
            if (ts.getConsumerInfo().equals(info)) {
                result = ts;
                break;
            }
            entry = subscriptions.getNextEntry(entry);
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        // lets find the cached identity as it has the sequence number
        // attached to it
      MessageIdentity storedIdentity=null;

      synchronized( this ) {
          QueueListEntry entry = deliveredMessages.getFirstEntry();
          while (entry != null) {
              MessageIdentity identity = (MessageIdentity) entry.getElement();
              if (messageID.equals(identity)) {
                  deliveredMessages.remove(entry);
                  storedIdentity=identity;
                  break;
              }
              entry = deliveredMessages.getNextEntry(entry);
          }
         
          if (storedIdentity==null) {
              // maybe the messages have not been delivered yet
              // as we are recovering from a previous transaction log
              entry = messagesToBeDelivered.getFirstEntry();
              while (entry != null) {
                  MessageIdentity identity = (MessageIdentity) entry.getElement();
                  if (messageID.equals(identity)) {
                      messagesToBeDelivered.remove(entry);
                      storedIdentity=identity;
                      break;
                  }
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        if (subList != null && subList.size() > 0) {
            do {
                boolean dispatched = false;
                msg = container.poll();
                if (msg != null) {
                    QueueListEntry entry = subList.getFirstEntry();
                    boolean targeted = false;
                    while (entry != null) {
                        SubscriptionImpl sub = (SubscriptionImpl) entry.getElement();
                        if (sub.isTarget(msg)) {
                            targeted = true;
                            if (!sub.isAtPrefetchLimit()) {
                                sub.addMessage(container, msg);
                                dispatched = true;
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    public void close() throws JMSException {
        if (started.get()) {
            stop();
        }
        queue.close();
        QueueListEntry entry = subscriptions.getFirstEntry();
        while (entry != null) {
            TransientQueueSubscription ts = (TransientQueueSubscription) entry.getElement();
            ts.close();
            entry = subscriptions.getNextEntry(entry);
        }
        subscriptions.clear();
    }
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                targeted = false;
                if (!subscriptions.isEmpty()) {
                    message = (ActiveMQMessage) queue.dequeue(2000);
                    if (message != null) {
                        if (!message.isExpired()) {
                            QueueListEntry entry = subscriptions.getFirstEntry();
                            while (entry != null) {
                                TransientQueueSubscription ts = (TransientQueueSubscription) entry.getElement();
                                if (ts.isTarget(message)) {
                                    targeted = true;
                                    if (message.isMessagePart()){
                                        TransientQueueSubscription sameTarget = (TransientQueueSubscription)messageParts.get(message.getParentMessageID());
                                        if (sameTarget == null){
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Related Classes of org.codehaus.activemq.service.QueueListEntry

  • org.codehaus.activemq.message.util.MemoryBoundedQueue
  • org.codehaus.activemq.service.boundedvm.TransientQueueBoundedMessageContainer
  • org.codehaus.activemq.service.impl.DurableQueueMessageContainer
  • org.codehaus.activemq.service.impl.DurableQueueMessageContainerManager
  • org.codehaus.activemq.service.impl.DurableTopicSubscription
  • org.codehaus.activemq.service.impl.QueueMessageContainerManager
  • org.codehaus.activemq.service.impl.SubscriptionImpl
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