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1   /*
2    * Copyright 2006 University Corporation for Advanced Internet Development, Inc.
3    *
4    * Licensed under the Apache License, Version 2.0 (the "License");
5    * you may not use this file except in compliance with the License.
6    * You may obtain a copy of the License at
7    *
8    * http://www.apache.org/licenses/LICENSE-2.0
9    *
10   * Unless required by applicable law or agreed to in writing, software
11   * distributed under the License is distributed on an "AS IS" BASIS,
12   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13   * See the License for the specific language governing permissions and
14   * limitations under the License.
15   */
16  
17  package org.opensaml.util.resource;
18  
19  /**
20   * A resource change listener.
21   */
22  public interface ResourceChangeListener{
23      
24      /** Types of change events; creation, update, and deletion. */
25      public enum ResourceChange{ CREATION, UPDATE, DELETE};
26      
27      /**
28       * Called when a resource is created.
29       * 
30       * @param resource the resource that was created
31       */
32      public void onResourceCreate(Resource resource);
33      
34      /**
35       * Called when a resource is update.
36       * 
37       * @param resource the resource that was updated
38       */
39      public void onResourceUpdate(Resource resource);
40      
41      /**
42       * Called when a resource is deleted.
43       * 
44       * @param resource the resource that was deleted
45       */
46      public void onResourceDelete(Resource resource);
47  }