code: @Override
  	protected void checkHandle(int handle) throws DataStoreException
      {
          if (handle < 0 ||
              handle >= data.length ||
              data[handle] == null)
              throw new DataStoreException(name+" : Invalid handle : "+handle);
      }
docs: /* (non-Javadoc)
  @see net.timewalker.ffmq4.storage.data.impl.AbstractDataStore#checkHandle(int)