Package org.hornetq.core.paging.cursor

Examples of org.hornetq.core.paging.cursor.PagePosition

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                  {
                     isPersistent = true;
                     store.deleteCursorAcknowledgeTransactional(tx, info.getRecordID());
                  }
               }
               PagePosition completeInfo = cursor.getCompleteInfo();
               if (completeInfo != null && completeInfo.getRecordID() >= 0)
               {
                  store.deletePageComplete(completeInfo.getRecordID());
                  cursor.setCompleteInfo(null);
               }
            }
         }
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      {
         info = consumedPages.remove(Long.valueOf(deletedPage.getPageId()));
      }
      if (info != null)
      {
         PagePosition completeInfo = info.getCompleteInfo();
         if (completeInfo != null)
         {
            try
            {
               store.deletePageComplete(completeInfo.getRecordID());
            }
            catch (Exception e)
            {
               HornetQServerLogger.LOGGER.warn("Error while deleting page-complete-record", e);
            }
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         //               In case of a TX Failure (a crash on the server) this will be recovered on the next cleanup once the
         //               server is restarted.
         // first will mark the page as complete
         if (isPersistent())
         {
            PagePosition completePage = new PagePositionImpl(infoPG.getPageId(), infoPG.getNumberOfMessages());
            infoPG.setCompleteInfo(completePage);
            store.storePageCompleteTransactional(tx.getID(), this.getId(), completePage);
            if (!persist)
            {
               persist = true;
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      return new CursorIterator();
   }

   private PagedReference internalGetNext(final PagePosition pos)
   {
      PagePosition retPos = pos.nextMessage();

      PageCache cache = cursorProvider.getPageCache(pos.getPageNr());

      if (cache != null && !cache.isLive() && retPos.getMessageNr() >= cache.getNumberOfMessages())
      {
         // The next message is beyond what's available at the current page, so we need to move to the next page
         cache = null;
      }

      // it will scan for the next available page
      while ((cache == null && retPos.getPageNr() <= pageStore.getCurrentWritingPage()) ||
         (cache != null && retPos.getPageNr() <= pageStore.getCurrentWritingPage() && cache.getNumberOfMessages() == 0))
      {
         retPos = moveNextPage(retPos);

         cache = cursorProvider.getPageCache(retPos.getPageNr());
      }

      if (cache == null)
      {
         // it will be null in the case of the current writing page
         return null;
      }
      else
      {
         PagedMessage serverMessage = cache.getMessage(retPos.getMessageNr());

         if (serverMessage != null)
         {
            return cursorProvider.newReference(retPos, serverMessage, this);
         }
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      }
   }

   private PagePosition moveNextPage(final PagePosition pos)
   {
      PagePosition retPos = pos;
      while (true)
      {
         retPos = retPos.nextPage();
         synchronized (consumedPages)
         {
            PageCursorInfo pageInfo = consumedPages.get(retPos.getPageNr());
            // any deleted or complete page will be ignored on the moveNextPage, we will just keep going
            if (pageInfo == null || (!pageInfo.isPendingDelete() && pageInfo.getCompleteInfo() == null))
            {
               return retPos;
            }
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                  {
                     isPersistent = true;
                     store.deleteCursorAcknowledgeTransactional(tx, info.getRecordID());
                  }
               }
               PagePosition completeInfo = cursor.getCompleteInfo();
               if (completeInfo != null && completeInfo.getRecordID() >= 0)
               {
                  store.deletePageComplete(completeInfo.getRecordID());
                  cursor.setCompleteInfo(null);
               }
            }
         }
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      {
         info = consumedPages.remove(Long.valueOf(deletedPage.getPageId()));
      }
      if (info != null)
      {
         PagePosition completeInfo = info.getCompleteInfo();
         if (completeInfo != null)
         {
            try
            {
               store.deletePageComplete(completeInfo.getRecordID());
            }
            catch (Exception e)
            {
               HornetQServerLogger.LOGGER.warn("Error while deleting page-complete-record", e);
            }
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         {
            boolean match = false;

            PagedReference message;

            PagePosition lastPosition = position;
            PagePosition tmpPosition = position;

            do
            {
               synchronized (redeliveries)
               {
                  PagePosition redelivery = redeliveries.poll();

                  if (redelivery != null)
                  {
                     // There's a redelivery pending, we will get it out of that pool instead
                     isredelivery = true;
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      return new CursorIterator();
   }

   private PagedReference internalGetNext(final PagePosition pos)
   {
      PagePosition retPos = pos.nextMessage();

      PageCache cache = cursorProvider.getPageCache(pos);

      if (cache == null)
      {
         return null;
      }

      if (!cache.isLive() && retPos.getMessageNr() >= cache.getNumberOfMessages())
      {
         retPos = pos.nextPage();

         cache = cursorProvider.getPageCache(retPos);

         if (cache == null)
         {
            return null;
         }

         if (retPos.getMessageNr() >= cache.getNumberOfMessages())
         {
            return null;
         }
      }

      PagedMessage serverMessage = cache.getMessage(retPos.getMessageNr());

      if (serverMessage != null)
      {
         return cursorProvider.newReference(retPos, serverMessage, this);
      }
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            }
            else
            {
               // The list is not ordered...
               // This is only done at creation of the queue, so we just scan instead of keeping the list ordened
               PagePosition retValue = null;

               for (PagePosition pos : entry.getValue().acks)
               {
                  System.out.println("Analizing " + pos);
                  if (retValue == null || retValue.getMessageNr() > pos.getMessageNr())
                  {
                     retValue = pos;
                  }
               }
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Related Classes of org.hornetq.core.paging.cursor.PagePosition

  • org.hornetq.core.paging.cursor.impl.PageSubscriptionImpl
  • org.hornetq.core.paging.cursor.impl.PageSubscriptionImpl$CursorIterator
  • org.hornetq.core.paging.PrintPages
  • org.hornetq.core.persistence.impl.journal.XmlDataExporter
  • org.hornetq.jms.persistence.impl.journal.XmlDataExporter
  • org.hornetq.tests.stress.paging.PageCursorStressTest
  • org.hornetq.tools.PrintPages
  • org.hornetq.tools.XmlDataExporter
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