1 /*
2 * Copyright (c) 2002-2014, Mairie de Paris
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 *
9 * 1. Redistributions of source code must retain the above copyright notice
10 * and the following disclaimer.
11 *
12 * 2. Redistributions in binary form must reproduce the above copyright notice
13 * and the following disclaimer in the documentation and/or other materials
14 * provided with the distribution.
15 *
16 * 3. Neither the name of 'Mairie de Paris' nor 'Lutece' nor the names of its
17 * contributors may be used to endorse or promote products derived from
18 * this software without specific prior written permission.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
21 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE
24 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
30 * POSSIBILITY OF SUCH DAMAGE.
31 *
32 * License 1.0
33 */
34 package fr.paris.lutece.plugins.document.modules.ckan.service;
35
36 import fr.paris.lutece.portal.service.util.AppLogService;
37
38 import org.codehaus.jackson.map.ObjectMapper;
39
40 import java.io.StringWriter;
41
42
43 /**
44 * Mapper Service
45 */
46 public final class MapperService
47 {
48 private static ObjectMapper _mapper = new ObjectMapper( );
49
50 /** Private constructor */
51 private MapperService( )
52 {
53 }
54
55 /**
56 * Transform the model into a JSON String
57 * @param <T> The bean class
58 * @param bean The bean object
59 * @return A JSON String
60 */
61 public static <T> String getJson( T bean )
62 {
63 StringWriter sw = new StringWriter( );
64
65 try
66 {
67 _mapper.writeValue( sw, bean );
68 }
69 catch ( Exception ex )
70 {
71 AppLogService.error( "Error while writing JSON " + ex.getMessage( ), ex );
72 }
73
74 return sw.toString( );
75 }
76
77 /**
78 * Read a JSON String to fill a model
79 * @param <T> The class of the bean
80 * @param strJson The JSON String
81 * @param clazz The class of the bean
82 * @return The model
83 */
84 public static <T> T readJson( String strJson, Class<T> clazz )
85 {
86 try
87 {
88 T object = _mapper.readValue( strJson, clazz );
89
90 return object;
91 }
92 catch ( Exception ex )
93 {
94 AppLogService.error( "Error while reading JSON " + ex.getMessage( ) + "JSON = " + strJson, ex );
95 }
96
97 return null;
98 }
99 }