/*

  * 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.util;

 import org.apache.log4j.Logger;

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

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

 /**

  * Utility base class for Entity and LSResource Resolvers that should resolve

  * arguments to XSDs defined for NotificationContentTypes

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

  */

 public class ContentTypeResourceResolver {

     protected static final String CONTENT_TYPE_PREFIX = "resource:notification/ContentType";

     protected final Logger LOG = Logger.getLogger(getClass());

     private NotificationContentTypeService notificationContentTypeService;

     /**

      * Constructs a ContentTypeResourceResolver.java.

      * @param notificationContentTypeService

      */

     public ContentTypeResourceResolver(NotificationContentTypeService notificationContentTypeService) {

         this.notificationContentTypeService = notificationContentTypeService;

     }

     /**

      * This method resolves the NotificationContentType by id.

      * @param id

      * @return

      */

     public NotificationContentType resolveContentType(String id) {

         if (!id.startsWith(CONTENT_TYPE_PREFIX)) return null;

         String contentType = id.substring(CONTENT_TYPE_PREFIX.length());

         NotificationContentType notificationContentType = notificationContentTypeService.getNotificationContentType(contentType);

         if (contentType == null) {

             LOG.warn("Content type '" + contentType + "' not found in notification database");

             return null;

         }

         LOG.info("Resolved '" + id + "' to notification content type: " + notificationContentType);

         return notificationContentType;

     }

 }