code: @Override
      public void execute(TridentTuple tuple, TridentCollector collector)
      {
          Map<String, String> logMap = null;
          try
          {
              logMap = convertToMap(tuple);
          }
          catch (IOException ex)
          {
              logger.warn("Map convert failed. Trash tuple.　Tuple=" + tuple, ex);
              return;
          }
  
          try
          {
              ApacheLog convertedEntity = createEntity(logMap);
              collector.emit(new Values(convertedEntity.getKey(), convertedEntity));
          }
          catch (Exception ex)
          {
              logger.info("Entity convert failed. Trash tuple.　LogMap=" + logMap, ex);
          }
      }
docs: {@inheritDoc}