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1   /*
2    * Copyright (c) 2011-2024 PrimeFaces Extensions
3    *
4    *  Permission is hereby granted, free of charge, to any person obtaining a copy
5    *  of this software and associated documentation files (the "Software"), to deal
6    *  in the Software without restriction, including without limitation the rights
7    *  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
8    *  copies of the Software, and to permit persons to whom the Software is
9    *  furnished to do so, subject to the following conditions:
10   *
11   *  The above copyright notice and this permission notice shall be included in
12   *  all copies or substantial portions of the Software.
13   *
14   *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15   *  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16   *  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
17   *  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
18   *  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
19   *  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
20   *  THE SOFTWARE.
21   */
22  package org.primefaces.extensions.util.json;
23  
24  import java.util.Date;
25  
26  import com.google.gson.Gson;
27  import com.google.gson.GsonBuilder;
28  
29  /**
30   * Singleton instance of Gson.
31   *
32   * @author Oleg Varaksin / last modified by $Author$
33   * @version $Revision$
34   * @since 0.2
35   */
36  public final class GsonConverter {
37  
38      private static final GsonConverter INSTANCE = new GsonConverter();
39      private final Gson gson;
40  
41      private GsonConverter() {
42          final GsonBuilder gsonBilder = new GsonBuilder();
43  
44          gsonBilder.registerTypeAdapter(Date.class, new DateTypeAdapter());
45          gsonBilder.serializeNulls();
46  
47          gson = gsonBilder.create();
48      }
49  
50      public static Gson getGson() {
51          return INSTANCE.gson;
52      }
53  }