Package com.hazelcast.queue.impl

Examples of com.hazelcast.queue.impl.QueueItem

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        super(name);
    }

    @Override
    public void run() {
        QueueItem item = getOrCreateContainer().peek();
        response = item != null ? item.getData() : null;
    }
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            Long itemId = f.get();
            if (itemId != null) {
                if (!itemIdSet.add(itemId)) {
                    throw new TransactionException("Duplicate itemId: " + itemId);
                }
                offeredQueue.offer(new QueueItem(null, itemId, data));
                TxnOfferOperation txnOfferOperation = new TxnOfferOperation(name, itemId, data);
                QueueTransactionLog transactionLog = new QueueTransactionLog(
                        tx.getTxnId(), itemId, name, partitionId, txnOfferOperation);
                tx.addTransactionLog(transactionLog);
                return true;
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        }
        return false;
    }

    public Data pollInternal(long timeout) {
        QueueItem reservedOffer = offeredQueue.peek();
        long itemId = reservedOffer == null ? -1 : reservedOffer.getItemId();
        TxnReservePollOperation operation = new TxnReservePollOperation(name, timeout, itemId, tx.getTxnId());
        try {
            Future<QueueItem> f = invoke(operation);
            QueueItem item = f.get();
            if (item != null) {
                if (reservedOffer != null && item.getItemId() == reservedOffer.getItemId()) {
                    offeredQueue.poll();
                    tx.removeTransactionLog(new TransactionLogKey(reservedOffer.getItemId(), name));
                    itemIdSet.remove(reservedOffer.getItemId());
                    return reservedOffer.getData();
                }
                //
                if (!itemIdSet.add(item.getItemId())) {
                    throw new TransactionException("Duplicate itemId: " + item.getItemId());
                }
                TxnPollOperation op = new TxnPollOperation(name, item.getItemId());
                QueueTransactionLog transactionLog
                        = new QueueTransactionLog(tx.getTxnId(), item.getItemId(), name, partitionId, op);
                tx.addTransactionLog(transactionLog);
                return item.getData();
            }
        } catch (Throwable t) {
            throw ExceptionUtil.rethrow(t);
        }
        return null;
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        }
        return null;
    }

    public Data peekInternal(long timeout) {
        final QueueItem offer = offeredQueue.peek();
        long itemId = offer == null ? -1 : offer.getItemId();
        final TxnPeekOperation operation = new TxnPeekOperation(name, timeout, itemId, tx.getTxnId());
        try {
            final Future<QueueItem> f = invoke(operation);
            final QueueItem item = f.get();
            if (item != null) {
                if (offer != null && item.getItemId() == offer.getItemId()) {
                    return offer.getData();
                }
                return item.getData();
            }
        } catch (Throwable t) {
            throw ExceptionUtil.rethrow(t);
        }
        return null;
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        return response != null;
    }

    @Override
    public Operation getBackupOperation() {
        final QueueItem item = (QueueItem) response;
        long itemId = item.getItemId();
        return new TxnReservePollBackupOperation(name, itemId, transactionId);
    }
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Related Classes of com.hazelcast.queue.impl.QueueItem

  • com.hazelcast.queue.impl.operations.PeekOperation
  • com.hazelcast.queue.impl.tx.TransactionalQueueProxySupport
  • com.hazelcast.queue.impl.tx.TxnReservePollOperation
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