Query about Session Management in WebDynpro Component.

Question

Hi to all, My Requirement is that,i have to Capture User-ID From Logon-Ticket and it will be use in the web-dynpro component,that access the Data From R/3 Server
(Back-end). and according to the login-ID information Captured from the Logon-ticket, i will do some task that will interact with the Bapi(R/3) on the basis of User-ID information. How Can I Do This.....Or How Can I Maintain the USer-Login Information into Portal and Use That in the Web-Dynpro Component embeded in the Portal.......
Plz if any-one have idea about, Help Me.......................
Thnx & Regard's
Dheerendra K. Shukla

Answer 1

Jitender,
You blindly copy example for stand-alone Java application and suggest it to server-side J2EE application... Not the best option...
Even this code could be improved:
public Connect1()
  /* no need to have instance variable */
  /* if it is used in single method */
  final JCO.Client connection = null;
  try
    /* Change the logon information
       to your own   system/user */
    connection = JCO.createClient
      "001",       /* SAP client    */
      "<userid>",  /* userid        */
      "****",      /* password      */
      null,        /* language      */
      "<host>",    /* host name     */
      "00"         /* system number */
    connection.connect();
    try
      System.out.println(connection.getAttributes());
      /* and other operations with live connection */
    finally
      /* always release resources         */
      /* original code has potential leak */
      connection.disconnect();
  catch (final Exception ex)
    ex.printStackTrace();
    /* DO NOT CALL THIS IN WEB-AS!!!          */
    /* THIS STOPS COMPLETE SERVER INSTANCE!!! */
    /* System.exit(1); */
    /* Re-throw instead or report in different manner */
    throw new RuntimeException(ex);
Worth to mention that Adaptive RFC model handle connections better then this.
Also note that WDSystemLandscape.getClient(LOGICAL_SYSTEM_NAME) allows to get connection without hardcoding connection details.
To summarize, what you advise is a plain "no-no".
And this code will works in same way as Java Print API for printing from WD -- see Re: how to print table data on click of a button
You guys are playing interesting game with each other ))
Valery Silaev
EPAM Systems
http://www.NetWeaverTeam.com