The following is an example of a Java class named MyUserManager.java:

//*************************************************************************
//
// SL-GMS Graphical Modeling Application, RTView Package
// MyUserManager.java
// Copyright (c) 1998-2006 Sherrill-Lubinski Corporation. All Rights Reserved.
// May 2005
//
//*************************************************************************

import java.util.*;
import com.sl.gmsjrtview.*;

/** The MyUserManager class implements a custom user login.
 *  <P>
 */

public class MyUserManager extends GmsCustomUserManager
{
 

//******************************************************************
// Constructor methods

public MyUserManager ()
{
}

//******************************************************************
// Instance methods

/** This method is called after the constructor. Subclasses should
 *  overwrite this method to initialize any data needed to validate the
 *  userName and password. This method should return true if the initialization
 *  was successful, otherwise return false. If this method returns false,
 *  the login will be considered invalid and RTView will exit.
 *  <P>
 */

public boolean activate ()
{
 return true;
}

//******************************************************************
// Get substitutions method

/** This method should return substitutions to set on the RTView
 *  application when the specified user is logged in. If this user does not
 *  have any associated substitutions, this method should return null.
 *  Otherwise, return a pair of Vectors. Both Vectors must be the same length,
 *  with the first Vector containing the substutition strings and the second
 *  Vector containing the corresponding substitution values.
 * <P>
 */
 

public Vector[] getSubstitutions (String userName)
{
        if (userName.equals("admin")) {
                Vector subStrs = new Vector();
                Vector subVals = new Vector();
                subStrs.addElement("sub1");
                subVals.addElement("value1");
                subStrs.addElement("sub2");
                subVals.addElement("value2");
                return new Vector[] {subStrs, subVals};
 

        } else if (userName.equals("user2")) {
                Vector subStrs = new Vector();
                Vector subVals = new Vector();
                subStrs.addElement("user2sub1");
                subVals.addElement("user2value1");
                subStrs.addElement("user2sub2");
                subVals.addElement("user2value2");
                return new Vector[] {subStrs, subVals};
 

        } else
                return null;
}

//******************************************************************
// methods called from the login dialog

/** This method is called from the login dialog to validate the userName
 *  and password. Subclasses should overwrite this method to return true
 *  if the userName and password are valid, otherwise return false.
 *  If there are no roles defined for the specified user, the login will
 *  fail, even if this method returns true.
 *  <P>
 */

public boolean validateLogin (String userName, String password)
{
 if (userName == null || password == null)
  return false;
 if (!userName.equals("admin") && !userName.equals("user1") &&
  !userName.equals("user2") && !userName.equals("user3"))
  return false;
 if (!userName.equals(password))
  return false;
 return true;

}

/** This method is called if the user presses Reset in the login
 *  dialog. The Reset button clears the fields so the user can set
 *  a new user name and password. If subclasses stored the userName
 *  or password from validateLogin() or the status of whether they
 *  were valid these values should be cleared.
 *  <P>
 */

public void invalidateLogin ()
{
}

/** This method must return true if the specified user has multiple role,
 *  otherwise false.
 *  <P>
 */

public boolean userHasMultipleRoles (String userName)
{
 if (userName == null)
  return false;
 if (userName.equals("user2") || userName.equals("user3"))
  return true;
 return false;
}

/** This method must return a Vector containing the role names for the
 *  specified user. Each user is required to have at least one role.
 *  <P>
 */

public Vector getRoleNamesForUser (String userName)
{
        if (userName == null)
                return null;
        Vector v = new Vector();
        if (userName.equals("admin")) {
                v.addElement("admin");
                return v;
        }
        if (userName.equals("user1")) {
                v.addElement("role1");
                return v;
        }
        if (userName.equals("user2")) {
                v.addElement("role2");
                v.addElement("role3");
                return v;
        }
        if (userName.equals("user3")) {
                v.addElement("role2");
                v.addElement("role3");
                v.addElement("role4");
                return v;
        }
        return null;
}
 

//******************************************************************
// methods called for pass client credentials

/** This method must return the password for the specified user, or null if
 *  if the user is not recognized. This method is called for the sql and olap
 *  data sources to use if databases are defined that have Use Client
 *  Credentials selected.  If the Use Client Credentials feature is not used in
 *  your application, this method can return null for all users.
 */

public String getPassword (String userName)
{
        return null;
}
}