Examples of MessageIterator

ca.uhn.hl7v2.util.MessageIterator
Iterates over all defined nodes (ie segments, groups) in a message, regardless of whether they have been instantiated previously. This is a tricky process, because the number of nodes is infinite, due to infinitely repeating segments and groups. See next() for details on how this is handled. This implementation assumes that the first segment in each group is present (as per HL7 rules). Specifically, when looking for a segment location, an empty group that has a spot for the segment will be overlooked if there is anything else before that spot. This may result in surprising (but sensible) behaviour if a message is missing the first segment in a group. @author Bryan Tripp
com.bloomberglp.blpapi.MessageIterator
com.taobao.metamorphosis.client.consumer.MessageIterator
��Ϣ�� @author boyan @deprecated Please use com.taobao.metamorphosis.consumer.MessageIteratorinstead. @see com.taobao.metamorphosis.consumer.MessageIterator @Date 2011-4-20
com.taobao.metamorphosis.consumer.MessageIterator
��Ϣ�� @author boyan @Date 2011-4-20

Examples of com.taobao.metamorphosis.consumer.MessageIterator

        buf.putInt(5);// msg length
        buf.putInt(CheckSum.crc32("hello".getBytes())); // checksum


        buf.position(MessageUtils.HEADER_LEN);
        buf.put("world".getBytes());
        this.it = new MessageIterator("test", buf.array());
        assertTrue(this.it.hasNext());
        this.it.next();


    }

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Examples of com.taobao.metamorphosis.consumer.MessageIterator

        buf.putLong(9999); // id
        buf.putInt(0); // flag


        buf.position(MessageUtils.HEADER_LEN);
        buf.put("hello".getBytes());
        this.it = new MessageIterator("test", buf.array());
        assertTrue(this.it.hasNext());
        final Message msg = this.it.next();
        assertNotNull(msg);
        assertEquals(9999L, msg.getId());
        assertEquals("test", msg.getTopic());

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Examples of com.taobao.metamorphosis.consumer.MessageIterator

        buf.putLong(9999); // id
        buf.putInt(1); // flag
        buf.position(MessageUtils.HEADER_LEN);
        buf.put(dataBuf);


        this.it = new MessageIterator("test", buf.array());
        assertTrue(this.it.hasNext());
        final Message msg = this.it.next();
        assertNotNull(msg);
        assertEquals(9999L, msg.getId());
        assertEquals("test", msg.getTopic());

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Examples of com.taobao.metamorphosis.consumer.MessageIterator

                // ��ȡ���������ز����ʱ������maxSize
                if (data.length < fetchRequest.getMaxSize() / 2) {
                    fetchRequest.decreaseMaxSize();
                }
                success = true;
                return new MessageIterator(fetchRequest.getTopic(), data);
            }
            else {
                final BooleanCommand booleanCmd = (BooleanCommand) response;
                switch (booleanCmd.getCode()) {
                case HttpStatus.NotFound:

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Examples of com.taobao.metamorphosis.consumer.MessageIterator

     * </pre>
     */
    public ReveiceResult get(String topic, Partition partition) {
        long offset = this.getOffset(partition);
        ReveiceResult result = new ReveiceResult(topic, partition, offset, this.serverUrl);
        MessageIterator it = null;
        try {
            int i = 0;
            while ((it = this.consumer.get(topic, partition, offset, 1024 * 1024)) != null) {
                // ��ֹ��һ�δ�0-offset����̫�������.
                if (i++ >= 3) {
                    break;
                }
                while (it.hasNext()) {
                    final Message msg = it.next();
                    result.addMessage(msg);
                    // System.out.println("Receive message " + new
                    // String(msg.getData()));
                }
                offset += it.getOffset();
                this.setOffset(partition, offset);
            }
        }
        catch (InvalidMessageException e) {
            result.setException(e);

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Examples of com.taobao.metamorphosis.consumer.MessageIterator

        // ��ǰ�����ļ�
        while (startOffset < maxOffset && (msgSet = (FileMessageSet) store.slice(startOffset, MAX_SIZE)) != null) {
            final int sizeInBytes = (int) msgSet.getSizeInBytes();
            final ByteBuffer buffer = ByteBuffer.allocate(sizeInBytes);
            msgSet.read(buffer);
            final MessageIterator it = new MessageIterator(topic, buffer.array());
            final List<DecodeMessage> msgList = new ArrayList<DecodeMessage>();
            // ������Ϣ
            long msgOffset = 0;
            while (it.hasNext()) {
                try {
                    final Message msg = it.next();
                    msgList.add(new DecodeMessage(msg.getId(), startOffset + it.getOffset()));
                    msgOffset = it.getOffset();
                }
                catch (final InvalidMessageException e) {
                    // �����ϲ����������������Ԥ����һ���Ǵ�ӡ��־
                    log.error("Message was corrupted,partition=" + store.getDescription() + ",offset=" + msgOffset);
                }
            }
            // recover��һ����Ϣ
            this.recoverOffset(offsetInfos, segRecoverOffsetInfos, msgList);
            // ��ǰ�ƶ�startOffset
            startOffset = startOffset + it.getOffset();
        }


        // �Ƴ���segment�ܹ���ƫ��offset
        for (final OffsetInfo info : segRecoverOffsetInfos) {
            offsetInfos.remove(info.oldMsgId);

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Examples of com.taobao.metamorphosis.consumer.MessageIterator

        }




        void processRequest(final FetchRequest request) {
            try {
                final MessageIterator iterator = SimpleFetchManager.this.consumer.fetch(request, -1, null);
                final MessageListener listener =
                        SimpleFetchManager.this.consumer.getMessageListener(request.getTopic());
                final ConsumerMessageFilter filter =
                        SimpleFetchManager.this.consumer.getMessageFilter(request.getTopic());
                this.notifyListener(request, iterator, listener, filter, SimpleFetchManager.this.consumer

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