@Override
    public String getUserName() {
        if (TraceComponent.isAnyTracingEnabled() && tc.isEntryEnabled())
            SibTr.entry(this, tc, "getUserName");
        String userName = jcaConnectionFactory.getUserName();
        if (TraceComponent.isAnyTracingEnabled() && tc.isEntryEnabled())
            SibTr.exit(this, tc, "getUserName", userName);
        return userName;
    }
@ Override public String getUserName ( ) { if ( TraceComponent . isAnyTracingEnabled ( ) && tc . isEntryEnabled ( ) ) SibTr . entry ( this , tc , "getUserName" ) ; String userName = jcaConnectionFactory . getUserName ( ) ; if ( TraceComponent . isAnyTracingEnabled ( ) && tc . isEntryEnabled ( ) ) SibTr . exit ( this , tc , "getUserName" , userName ) ; return userName ; }
/*
default user name is null.