/**

  * 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.core.assembly.data;

 public interface HasChangeCallbacks {

         public enum ChangeType {

                 ADD, REMOVE, UPDATE;

         }

         public static interface ChangeCallback {

                 void onChange(ChangeType type, QueryPath path);

         }

         public static interface ChangeCallbackRegistration {

                 void remove();

         }

         ChangeCallbackRegistration addChangeCallback(ChangeCallback callback);        

 }