/* 
    * Licensed to the Apache Software Foundation (ASF) under one or more
    * contributor license agreements.  See the NOTICE file distributed with
    * this work for additional information regarding copyright ownership.
    * The ASF licenses this file to You 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 org.apache.jetspeed.userinfo.impl;
  
  import java.util.Collection;
  import java.util.HashMap;
  import java.util.Iterator;
  import java.util.List;
  import java.util.Map;
  
  import javax.portlet.PortletRequest;
  import javax.security.auth.Subject;
  
  import org.apache.commons.logging.Log;
  import org.apache.commons.logging.LogFactory;
  import org.apache.jetspeed.components.portletregistry.PortletRegistry;
  import org.apache.jetspeed.om.common.portlet.MutablePortletApplication;
  import org.apache.jetspeed.request.RequestContext;
  import org.apache.jetspeed.userinfo.UserAttributeRetrievalException;
  import org.apache.jetspeed.userinfo.UserAttributeSource;
  import org.apache.jetspeed.userinfo.UserInfoManager;
  import org.apache.jetspeed.userinfo.impl.AbstractUserInfoManagerImpl;
  import org.apache.pluto.om.common.ObjectID;
  
  /***
   * Multisource User Information manager
   * One or more sources are assembled in Spring configuration and setter injected
   * 
   * @author <a href="mailto:KeithGarry.Boyce@bcbsma.com">Keith Garry Boyce </a>
   * @author <a href="mailto:taylor@apache.org">David Sean Taylor </a>
   * @version $Id: $
   */
  public class MultiSourceUserInfoManagerImpl extends AbstractUserInfoManagerImpl
          implements UserInfoManager
  {
  
      /*** Logger */
      private static final Log log = LogFactory
              .getLog(MultiSourceUserInfoManagerImpl.class);
  
      private List sources;
  
      private PortletRegistry portletRegistry;
     
      /*
       * (non-Javadoc)
       * 
       * @see org.apache.jetspeed.userinfo.UserInfoManager#getUserInfoMap(org.apache.pluto.om.common.ObjectID,
       *      org.apache.jetspeed.request.RequestContext)
       */
      public Map getUserInfoMap(ObjectID oid, RequestContext context)
      {
  
          try
          {
              Map userInfoMap = new HashMap();
              Subject subject = context.getSubject();
              MutablePortletApplication pa = portletRegistry
                      .getPortletApplication(oid);
  //System.out.println("*** PA = " + pa);            
              if (null == pa)
              {
                  log.debug(PortletRequest.USER_INFO + " is set to null");
                  return null;
              }
              Collection userAttributes = pa.getUserAttributes();
              Collection userAttributeRefs = pa.getUserAttributeRefs();
              Collection linkedUserAttributes = mapLinkedUserAttributes(
                      userAttributes, userAttributeRefs);
              for (Iterator iter = sources.iterator(); iter.hasNext();)
              {
                  UserAttributeSource source = (UserAttributeSource) iter.next();
                  Map sourceMap;
  
                  sourceMap = source.getUserAttributeMap(subject,
                          linkedUserAttributes, context);
                  userInfoMap.putAll(sourceMap);
              }
              return userInfoMap;
          } catch (UserAttributeRetrievalException e)
          {
              // Until external api is changed return
              e.printStackTrace();            
              return null;
          }
     }
 
     /***
      * @param sources
      *            The sources to set.
      */
     public void setSources(List sources)
     {
         this.sources = sources;
     }
 
     /***
      * @param portletRegistry
      *            The portletRegistry to set.
      */
     public void setPortletRegistry(PortletRegistry portletRegistry)
     {
         this.portletRegistry = portletRegistry;
     }
 }