Security code in webDynpro for extranet portal

Hi Friends,
I got some code related to security that we need to take care from webdynpro side in case of extranet portal application.
      String userId = "";
      IWDClientUser wdUser = null;
      IUser user = null;
      IUserAccount
[] acct = null;
      try {
             wdUser = WDClientUser.getCurrentUser();
             user = wdUser.getSAPUser();
             if (user != null) {
                     acct = user.getUserAccounts();
                     userId = acct[0].getLogonUid();
                     if (userId != null) {
                            //wdContext.currentContextElement().setCustno(strUserID);
                              //set the current customer to LoggedInUser
                            wdThis.wdGetContext().currentContextElement().setCurrentCustomer(userId.toUpperCase());
                            return userId.toUpperCase();
                     } else {
                            wdComponentAPI.getMessageManager().reportWarning(" Invalid user1");
             } else {
                     wdComponentAPI.getMessageManager().reportWarning(" Invalid user2");
      } catch (Exception e) {
             wdComponentAPI.getMessageManager().reportWarning(" Invalid user3" + e.getMessage());
      return "";
Is this code really checking the logged in user with the R/3?
Regards,
Lakshmi Prasad.

Hi,
The code just sets the name of the logged in user to a context variable.
Thanks,
Venkat

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