I. Get User ID and User Name from Session

PamirsSession.getUserId()

PamirsSession.getUserName()

II. If More User Information Is Needed, Query the Database

// With caching, passive expiration in 30 seconds (recommended)
PamirsUser user = UserInfoCache.queryUserById(PamirsSession.getUserId());
// Without caching, get from DB
PamirsUser dbUser = new PamirsUser().queryById(PamirsSession.getUserId());