code: @Override
    public final Long fromString(final Map<String, Object> pAddParam,
      final String pStrVal) throws Exception {
      if (pStrVal == null || "".equals(pStrVal)) {
        return null;
      }
      if (pAddParam != null) {
        String dgsep = (String) pAddParam.get("decGrSepv");
        if (dgsep != null) {
          String strVal = pStrVal.replace(dgsep, "");
          return Long.valueOf(strVal);
        }
      }
      return Long.valueOf(pStrVal);
    }
docs: <p>Convert from string.</p>
  @param pAddParam additional params, e.g. IRequestData
  to fill owner itsVersion.
  @param pStrVal string representation
  @return Long value
  @throws Exception - an exception