/*
 * Copyright  2003-2004 The Apache Software Foundation.
 *
 *  Licensed under the Apache License, Version 2.0 (the "License");
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 *
 */

package whatSoEver;

import "whatever is needed"
...
import javax.security.auth.callback.Callback;
import javax.security.auth.callback.CallbackHandler;
import javax.security.auth.callback.UnsupportedCallbackException;
/**
 * WSClientClass
 * <p/>
 *
 */
public class WSClientClass implements CallbackHandler {

	private String storedPassword = null;

	/*
	 * Here runs the WSClient
	 */
    public void run() {

	....
	// setup of call structure
	/*
	 * set some parameters for the WSS Axis handlers
	 */
      _call.setProperty(WSHandlerConstants.PASSWORD_TYPE, 
				WSConstants.PW_TEXT);
      _call.setProperty(WSHandlerConstants.USER, "username");

	/*
	 * Set "this" class as callback to forward a password to
	 * WSS functions
	 */
	_call.setProperty(WSHandlerConstants.PW_CALLBACK_REF , this);

	...

   }

	/*
	 * This function stores a password provided by some other
	 * method
	 */
	public void setPassword(String pw) {
	    storedPassword = pw;
      }


    public void handle(Callback[] callbacks)
            throws IOException, UnsupportedCallbackException {
        for (int i = 0; i < callbacks.length; i++) {
            if (callbacks[i] instanceof WSPasswordCallback) {
                WSPasswordCallback pc = (WSPasswordCallback) callbacks[i];
                /*
                 * here call a function/method to lookup the password for
                 * the given identifier (e.g. a user name or keystore alias)
                 * e.g.: pc.setPassword(passStore.getPassword(pc.getIdentfifier))
                 * for Testing we supply a fixed name here.
                 */
                pc.setPassword(storedPassword);
            } else {
                throw new UnsupportedCallbackException(callbacks[i], "Unrecognized Callback");
            }
        }
    }
}