code: @Override
  	protected int retrieveMessagePriority(int handle) throws JMSException
      {
      	// Only read the first header bytes of the message to read the priority field
      	byte[] msgHeader = ((AbstractBlockBasedDataStore)dataStore).retrieveHeader(handle, 2);    	
      	return msgHeader[1] & 0x0F;
      }
docs: /* (non-Javadoc)
  @see net.timewalker.ffmq4.storage.message.impl.AbstractMessageStore#retrieveMessagePriority(int)