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   Using BEA Jolt

The Jolt Class Library contains the clear() method, which allows you to remove existing attributes from an object and, in effect, provides for the reuse of the object. The Jolt Object Reuse (reuseSample.java) listing illustrates how to use the clear() method to clear parameter values and how to reuse the JoltRemoteService parameter values; you do not have to destroy the service to reuse it. Instead, the svc.clear(); statement is used to discard the existing input parameters before reusing the addString() method.

/* Copyright 1999 BEA Systems, Inc. All Rights Reserved */
import java.net.*;
import java.io.*;
import bea.jolt.*;
/*
 * This is a Jolt sample program that illustrates how to reuse the
 * JoltRemoteService after each invocation.
 */
class reuseSample
{
    private static JoltSession s_session;
    static void init( String host, short port )
    {
        /* Prepare to connect to the Tuxedo domain.  */
        JoltSessionAttributes attr = new JoltSessionAttributes();
        attr.setString(attr.APPADDRESS,"//"+ host+":" + port);

        String username = null;
        String userrole = "sw-developer";
        String applpasswd = null;
        String userpasswd = null;

        /* Check what authentication level has been set. */
        switch (attr.checkAuthenticationLevel())
        {
            case JoltSessionAttributes.NOAUTH:
                break;
            case JoltSessionAttributes.APPASSWORD:
                applpasswd = "secret8";
                break;
            case JoltSessionAttributes.USRPASSWORD:
                username = "myName";
                userpasswd = "BEA#1";
                applpasswd = "secret8";
                break;
        }

        /* Logon now without any idle timeout (0). */
        /* The network connection is retained until logoff. */
        attr.setInt(attr.IDLETIMEOUT, 0);
        s_session = new JoltSession(attr, username, userrole,
        userpasswd, applpasswd);
    }

    public static void main( String args[] )
    {
        String host;
        short  port;
        JoltRemoteService svc;

        if (args.length != 2)
        {
            System.err.println("Usage: reuseSample host port");
            System.exit(1);
        }

        /* Get the host name and port number for initialization. */
        host = args[0];
        port = (short)Integer.parseInt(args[1]);

        init(host, port);

        /* Get the object reference to the DELREC service.  This
         * service has no output parameters, but has only one input
         * parameter.
         */
        svc = new JoltRemoteService("DELREC", s_session);
        try
        {
            /* Set input parameter REPNAME. */
            svc.addString("REPNAME", "Record1");
            svc.call(null);
            /* Change the input parameter before reusing it */
            svc.setString("REPNAME", "Record2");
            svc.call(null);

            /* Simply discard all input parameters */
            svc.clear();
            svc.addString("REPNAME", "Record3");
            svc.call(null);
        }
        catch (ApplicationException e)
        {
            System.err.println("Service DELREC failed: "+
            e.getMessage()+" "+ svc.getStringDef("MESSAGE", null));
        }

        /* Logoff now and get rid of the object. */
        s_session.endSession();
    }
}