code: @Override
      public int append2SQLSelect(final Type _type,
                                  final SQLSelect _select,
                                  final int _tableIndex,
                                  final int _colIndex)
      {
          int ret = 0;
          if (getParent() == null && getParentSelectPart() != null
                          && getParentSelectPart() instanceof FileSelectPart) {
              _select.column(_tableIndex, AbstractStoreResource.COLNAME_FILENAME);
              getColIndexs().add(_colIndex);
              ret = 1;
          }
          return ret;
      }
docs: {@inheritDoc}