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1   /*
2    *    Copyright 2009-2021 the original author or authors.
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  package org.apache.ibatis.cache;
17  
18  /**
19   * @author Clinton Begin
20   * @deprecated Since 3.5.3, This class never used and will be removed future version.
21   */
22  @Deprecated
23  public final class NullCacheKey extends CacheKey {
24  
25    private static final long serialVersionUID = 3704229911977019465L;
26  
27    public NullCacheKey() {
28      super();
29    }
30  
31    @Override
32    public void update(Object object) {
33      throw new CacheException("Not allowed to update a NullCacheKey instance.");
34    }
35  
36    @Override
37    public void updateAll(Object[] objects) {
38      throw new CacheException("Not allowed to update a NullCacheKey instance.");
39    }
40  }