/**
    * Copyright 2010 The Kuali Foundation Licensed under the
    * Educational Community 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.osedu.org/licenses/ECL-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 org.kuali.student.common.ws.security;
  
  import javax.xml.ws.WebServiceContext;
  
  import org.apache.log4j.Logger;
  
  /**
   * 
   * @author Will Gomes
   *
   */
  public class PrincipalAccessor {
      
      final static Logger logger = Logger.getLogger(PrincipalAccessor.class);
      
      public static PrincipalWrapper getPrincipalFromWebServiceContext(WebServiceContext wsContext){
          Class<?> principalWrapperImpl = null;
          PrincipalWrapper principal = null;
                  
          try {
              principalWrapperImpl =  
                  (Class.forName("org.kuali.student.common.cxf.security.PrincipalWrapperImpl"));
          } catch (ClassNotFoundException cnfe){
              try{
                  principalWrapperImpl = 
                      Class.forName("org.kuali.student.common.metro.security.PrincipalWrapperImpl");
              } catch (ClassNotFoundException cnfe2){
                  logger.error("PrincpalWraper implementaion could not be found.");
              }
          } 
          
          try{
              principal = (PrincipalWrapper)principalWrapperImpl.newInstance();
              principal.setPrincipal(wsContext);
          } catch (Exception e){
              logger.error("Exception occured: ", e);            
          }
              
          return principal;
      }
  }