/*

  * Copyright 2007-2008 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.opensource.org/licenses/ecl2.php

  * 

  * 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.rice.ken.service.impl;

 import java.util.Collection;

 import java.util.HashMap;

 import java.util.Map;

 import org.apache.ojb.broker.query.Criteria;

 import org.apache.ojb.broker.query.QueryByCriteria;

 import org.apache.ojb.broker.query.QueryFactory;

 import org.kuali.rice.core.dao.GenericDao;

 import org.kuali.rice.ken.bo.Notification;

 import org.kuali.rice.ken.bo.NotificationContentType;

 import org.kuali.rice.ken.service.NotificationContentTypeService;

 import org.kuali.rice.kew.doctype.bo.DocumentType;

 /**

  * NotificationContentTypeService implementation - uses the businessObjectDao to get at the underlying data in the stock DBMS.

  * @author Kuali Rice Team (rice.collab@kuali.org)

  */

 public class NotificationContentTypeServiceImpl implements NotificationContentTypeService {

     private GenericDao businessObjectDao;

     /**

      * Constructs a NotificationContentTypeServiceImpl.java.

      * @param businessObjectDao

      */

     public NotificationContentTypeServiceImpl(GenericDao businessObjectDao) {

         this.businessObjectDao = businessObjectDao;

     }

     /**

      * @see org.kuali.rice.ken.service.NotificationContentTypeService#getNotificationContentType(java.lang.String)

      */

     public NotificationContentType getNotificationContentType(String name) {

         Criteria c = new Criteria();

         c.addEqualTo("name", name);

         c.addEqualTo("current", true);

         Collection<NotificationContentType> coll = businessObjectDao.findMatching(NotificationContentType.class, c);

         if (coll.size() == 0) {

             return null;

         } else {

             return coll.iterator().next();

         }

     }

     protected int findHighestContentTypeVersion(String name) {

         // there's probably a better way...'report'? or direct SQL

         Map<String, Object> fields = new HashMap<String, Object>(2);

         fields.put("name", name);

         Collection<NotificationContentType> types = businessObjectDao.findMatchingOrderBy(NotificationContentType.class, fields, "version", false);

         if (types.size() > 0) {

             return types.iterator().next().getVersion();

         }

         return -1;

     }

     /**

      * @see org.kuali.rice.ken.service.NotificationContentTypeService#saveNotificationContentType(org.kuali.rice.ken.bo.NotificationContentType)

      */

     public void saveNotificationContentType(NotificationContentType contentType) {

         NotificationContentType previous = getNotificationContentType(contentType.getName());

         if (previous != null) {

             previous.setCurrent(false);

             businessObjectDao.save(previous);

         }

         int lastVersion = findHighestContentTypeVersion(contentType.getName());

         NotificationContentType next;

         if (contentType.getId() == null) {

             next = contentType; 

         } else {

             next = new NotificationContentType();

             next.setName(contentType.getName());

             next.setDescription(contentType.getDescription());

             next.setNamespace(contentType.getNamespace());

             next.setXsd(contentType.getXsd());

             next.setXsl(contentType.getXsl());

         }

         next.setVersion(lastVersion + 1);

         next.setCurrent(true);

         businessObjectDao.save(next);

         // update all the old references

         if (previous != null) {

             Collection<Notification> ns = getNotificationsOfContentType(previous);

             for (Notification n: ns) {

                 n.setContentType(next);

                 businessObjectDao.save(n);

             }

         }

     }

     protected Collection<Notification> getNotificationsOfContentType(NotificationContentType ct) {

         Map<String, Object> fields = new HashMap<String, Object>(1);

         fields.put("contentType", ct.getId());

         return businessObjectDao.findMatching(Notification.class, fields);

     }

     /**

      * @see org.kuali.rice.ken.service.NotificationContentTypeService#getAllCurrentContentTypes()

      */

     public Collection<NotificationContentType> getAllCurrentContentTypes() {

         Criteria c = new Criteria();

         c.addEqualTo("current", true);

         return businessObjectDao.findMatching(NotificationContentType.class, c);

     }

     /**

      * @see org.kuali.rice.ken.service.NotificationContentTypeService#getAllContentTypes()

      */

     public Collection<NotificationContentType> getAllContentTypes() {

         return businessObjectDao.findAll(NotificationContentType.class);

     }

 }