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annotate src/org/eclipse/jetty/util/ajax/JSONPojoConvertorFactory.java @ 803:166b16bda630

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remove org.eclipse.jetty.util.preventers
author Franklin Schmidt <fschmidt@gmail.com>
date Wed, 07 Sep 2016 21:21:32 -0600
parents 3428c60d7cfc
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1 //
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2 // ========================================================================
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3 // Copyright (c) 1995-2014 Mort Bay Consulting Pty. Ltd.
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4 // ------------------------------------------------------------------------
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5 // All rights reserved. This program and the accompanying materials
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6 // are made available under the terms of the Eclipse Public License v1.0
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7 // and Apache License v2.0 which accompanies this distribution.
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8 //
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9 // The Eclipse Public License is available at
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10 // http://www.eclipse.org/legal/epl-v10.html
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11 //
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12 // The Apache License v2.0 is available at
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13 // http://www.opensource.org/licenses/apache2.0.php
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14 //
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15 // You may elect to redistribute this code under either of these licenses.
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16 // ========================================================================
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17 //
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18
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19 package org.eclipse.jetty.util.ajax;
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20
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21 import java.util.Map;
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22
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23 import org.eclipse.jetty.util.Loader;
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24 import org.eclipse.jetty.util.ajax.JSON.Convertor;
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25 import org.eclipse.jetty.util.ajax.JSON.Output;
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26
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27 public class JSONPojoConvertorFactory implements JSON.Convertor
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28 {
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29 private final JSON _json;
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30 private final boolean _fromJson;
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31
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32 public JSONPojoConvertorFactory(JSON json)
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33 {
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34 if (json==null)
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35 {
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36 throw new IllegalArgumentException();
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37 }
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38 _json=json;
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39 _fromJson=true;
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40 }
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41
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42 /* ------------------------------------------------------------ */
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43 /**
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44 * @param json The JSON instance to use
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45 * @param fromJSON If true, the class name of the objects is included
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46 * in the generated JSON and is used to instantiate the object when
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47 * JSON is parsed (otherwise a Map is used).
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48 */
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49 public JSONPojoConvertorFactory(JSON json,boolean fromJSON)
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50 {
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51 if (json==null)
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52 {
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53 throw new IllegalArgumentException();
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54 }
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55 _json=json;
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56 _fromJson=fromJSON;
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57 }
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58
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59 /* ------------------------------------------------------------ */
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60 public void toJSON(Object obj, Output out)
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61 {
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62 String clsName=obj.getClass().getName();
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63 Convertor convertor=_json.getConvertorFor(clsName);
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64 if (convertor==null)
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65 {
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66 try
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67 {
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68 Class cls=Loader.loadClass(JSON.class,clsName);
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69 convertor=new JSONPojoConvertor(cls,_fromJson);
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70 _json.addConvertorFor(clsName, convertor);
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71 }
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72 catch (ClassNotFoundException e)
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73 {
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74 JSON.LOG.warn(e);
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75 }
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76 }
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77 if (convertor!=null)
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78 {
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79 convertor.toJSON(obj, out);
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80 }
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81 }
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82
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83 public Object fromJSON(Map object)
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84 {
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85 Map map=object;
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86 String clsName=(String)map.get("class");
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87 if (clsName!=null)
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88 {
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89 Convertor convertor=_json.getConvertorFor(clsName);
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90 if (convertor==null)
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91 {
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92 try
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93 {
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94 Class cls=Loader.loadClass(JSON.class,clsName);
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95 convertor=new JSONPojoConvertor(cls,_fromJson);
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96 _json.addConvertorFor(clsName, convertor);
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97 }
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98 catch (ClassNotFoundException e)
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99 {
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100 JSON.LOG.warn(e);
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101 }
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102 }
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103 if (convertor!=null)
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104 {
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105 return convertor.fromJSON(object);
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106 }
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107 }
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108 return map;
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109 }
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110 }