Implement a user search on HCP

Hi,

I am trying to implement a people(user) search within an HCP Java Service. So essentially, I want to lookup user information such as first name, last name and email for a given user ID (not my own user, but others).

I tried using code like this:

  InitialContext ctx; 

ctx = new InitialContext(); 

  UserProvider userProvider = null; 

  userProvider = (UserProvider) ctx.lookup("java:comp/env/user/Provider"); 

  User user = userProvider.getUser(userId);

This works fine for my own user which is logged in, but other users are not found this way.

Is there any way one can implement a user lookup ? Is this even provided from a security perspective ?

Thanks,

Best regards,

Stefan