Is it possible to authentication an application user like a system administrator?

You can make any user of an application a system administrator by granting him all permissions of the system security descriptor type on the system security descriptor.

See SystemAdminMaker.java file below for more details.

Note the class uses NON Public API and will therefore break in future releases of Xpert.ivy!

SystemAdminMaker.java:

package ch.ivyteam.ivy.demo;

import ch.ivyteam.ivy.security.IPermissionGroup;
import ch.ivyteam.ivy.security.ISecurityDescriptor;
import ch.ivyteam.ivy.security.ISecurityManager;
import ch.ivyteam.ivy.security.IUser;
import ch.ivyteam.ivy.server.IServer;
import ch.ivyteam.ivy.server.ServerFactory;

// ============================================================
// ATTENTION:
// ============================================================
// The following code access NON PUBLIC API. 
// Therefore this code will break in future Xpert.ivy versions!
// ============================================================
public class SystemAdminMaker 
{
    public void grantSystemAdminRightsTo(IUser user)
    {
        ISecurityDescriptor systemSecurityDescriptor = getSystemSecurityDescriptor();       
        systemSecurityDescriptor.grantPermissions(getRootPermissionGroup(), user);
    }

    public void ungrantSystemAdminRightsTo(IUser user)
    {
        ISecurityDescriptor systemSecurityDescriptor = getSystemSecurityDescriptor();       
        systemSecurityDescriptor.ungrantPermissions(getRootPermissionGroup(), user);
    }

    private ISecurityDescriptor getSystemSecurityDescriptor() 
    {
        IServer server = ServerFactory.getServer();
        ISecurityManager securityManager = server.getSecurityManager();
        ISecurityDescriptor systemSecurityDescriptor = securityManager.getSystemSecurityDescriptor();
        return systemSecurityDescriptor;
    }

    private IPermissionGroup getRootPermissionGroup()
    {
        return getSystemSecurityDescriptor().getSecurityDescriptorType().getRootPermissionGroup();
    }
}