protected PreparedStatement getExistQuery(Connection conn, DatabaseObjectType type)
      throws SQLException {
    PreparedStatement pstmt = null;

    for (SQLObject existQuery : catalogStore.getExistQueries()) {
      if (type.equals(existQuery.getType())) {
        pstmt = conn.prepareStatement(existQuery.getSql());
        break;
      }
    }

    return pstmt;
  }