Beginners Question about policy.xml and user definition

[Bernd Huber]

Hello all,

i am new to apache rampart and i want to use rampart, to send a 
SOAP-Header with
a UsernameToken to a server using the policy mechanism.
In my case, a client needs to specify a username and a password always 
different, because
i have a GUI with a popup window asking for username and password.  So i 
wonder how
i can set username and password before sending it to the server.

The "policy.xml" always has a fixed username.
In the clients callback handler class it seems that i can only set the 
password
to a existing username from the policy.xml using the WSPasswordCallback 
class.

          WSPasswordCallback pwcb = 
(WSPasswordCallback)callbacks[0];                     
          pwcb.setPassword(password);

i finally got it working to set usernames dynamically by parsing the 
policy file as xml.
But it seems to me like a workaround. Is there no way to set the 
username in the
callbackhandler class with a java function instead of reading it out 
from the policy file ?
What is the philosophy behind this way to allow a username definition 
only in the policy.xml ?

This is the code i use to set the username:

      // set the username in the policyfile
      OMFactory factory = OMAbstractFactory.getOMFactory();               
      OMElement document = rampartpolicy.getDocumentElement();       
     
      OMElement exactlyone = document.getFirstElement();
      OMElement all = exactlyone.getFirstElement();
      OMElement rampConfig = all.getFirstChildWithName(new 
QName("http://ws.apache.org/rampart/policy";, "RampartConfig"));
      OMElement user = rampConfig.getFirstChildWithName(new 
QName("http://ws.apache.org/rampart/policy";, "user"));
     
      if (user != null)
        user.detach();

      OMNamespace ns = 
factory.createOMNamespace("http://ws.apache.org/rampart/policy";, "ramp");
      user = factory.createOMElement("user", ns);
      user.setText(username);                   
      rampConfig.addChild(user);

      // set the rampart policyfile as option for the registry stub 
                   
      
registry._getServiceClient().getOptions().setProperty(RampartMessageData.KEY_RAMPART_POLICY, 

      PolicyEngine.getPolicy(rampartpolicy.getDocumentElement()));

      // set the password callbackhandler along with the password       
      handler.setPassword(password);                 
      
registry._getServiceClient().getOptions().setProperty("passwordCallbackRef", 
handler);  

thanks,
B. Huber