@Override
  public String getColumnText(Object element, int columnIndex) {
    MongoDBIndexDAO tc = (MongoDBIndexDAO) element;

    switch (columnIndex) {
      case 0:
        return tc.getNs();
      case 1:
        return tc.getName();
      case 2:
        return new Boolean(tc.isUnique()).toString();
    }

    return "** not set column **";
  }