2 // DataContractJsonSerializer.cs
5 // Atsushi Enomoto <atsushi@ximian.com>
7 // Copyright (C) 2007-2008 Novell, Inc (http://www.novell.com)
9 // Permission is hereby granted, free of charge, to any person obtaining
10 // a copy of this software and associated documentation files (the
11 // "Software"), to deal in the Software without restriction, including
12 // without limitation the rights to use, copy, modify, merge, publish,
13 // distribute, sublicense, and/or sell copies of the Software, and to
14 // permit persons to whom the Software is furnished to do so, subject to
15 // the following conditions:
17 // The above copyright notice and this permission notice shall be
18 // included in all copies or substantial portions of the Software.
20 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
21 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
22 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
23 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
24 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
25 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
26 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
29 using System.Collections;
30 using System.Collections.Generic;
31 using System.Collections.ObjectModel;
32 using System.Globalization;
35 using System.Reflection;
39 namespace System.Runtime.Serialization.Json
41 public sealed class DataContractJsonSerializer : XmlObjectSerializer
43 const string default_root_name = "root";
45 #region lengthy constructor list
47 public DataContractJsonSerializer (Type type)
48 : this (type, Type.EmptyTypes)
52 public DataContractJsonSerializer (Type type, IEnumerable<Type> knownTypes)
53 : this (type, default_root_name, knownTypes)
57 public DataContractJsonSerializer (Type type, string rootName)
58 : this (type, rootName, Type.EmptyTypes)
62 public DataContractJsonSerializer (Type type, XmlDictionaryString rootName)
63 : this (type, rootName != null ? rootName.Value : default_root_name, Type.EmptyTypes)
67 public DataContractJsonSerializer (Type type, string rootName, IEnumerable<Type> knownTypes)
68 : this (type, rootName, knownTypes, int.MaxValue, false, false)
72 public DataContractJsonSerializer (Type type, XmlDictionaryString rootName, IEnumerable<Type> knownTypes)
73 : this (type, rootName != null ? rootName.Value : default_root_name, knownTypes)
77 DataContractJsonSerializer(Type type, string rootName, IEnumerable<Type> knownTypes, int maxItemsInObjectGraph, bool ignoreExtensionDataObject, bool alwaysEmitTypeInformation)
80 throw new ArgumentNullException ("type");
82 throw new ArgumentNullException ("rootName");
83 if (maxItemsInObjectGraph < 0)
84 throw new ArgumentOutOfRangeException ("maxItemsInObjectGraph");
88 var knownTypesFromAttributes = new List<Type> ();
90 foreach (var attr in type.GetCustomAttributes (typeof (KnownTypeAttribute), false))
91 knownTypesFromAttributes.Add ((attr as KnownTypeAttribute).Type);
93 if (knownTypes != null)
94 knownTypesFromAttributes.AddRange (knownTypes);
96 known_types = new ReadOnlyCollection<Type> (knownTypesFromAttributes);
99 max_items = maxItemsInObjectGraph;
100 ignore_extension = ignoreExtensionDataObject;
101 always_emit_type = alwaysEmitTypeInformation;
104 public DataContractJsonSerializer (Type type, IEnumerable<Type> knownTypes, int maxItemsInObjectGraph, bool ignoreExtensionDataObject, IDataContractSurrogate dataContractSurrogate, bool alwaysEmitTypeInformation)
105 : this (type, default_root_name, knownTypes, maxItemsInObjectGraph, ignoreExtensionDataObject, alwaysEmitTypeInformation)
109 public DataContractJsonSerializer (Type type, string rootName, IEnumerable<Type> knownTypes, int maxItemsInObjectGraph, bool ignoreExtensionDataObject, IDataContractSurrogate dataContractSurrogate, bool alwaysEmitTypeInformation)
110 : this (type, rootName, knownTypes, maxItemsInObjectGraph, ignoreExtensionDataObject, alwaysEmitTypeInformation)
112 surrogate = dataContractSurrogate;
115 public DataContractJsonSerializer (Type type, XmlDictionaryString rootName, IEnumerable<Type> knownTypes, int maxItemsInObjectGraph, bool ignoreExtensionDataObject, IDataContractSurrogate dataContractSurrogate, bool alwaysEmitTypeInformation)
116 : this (type, rootName != null ? rootName.Value : default_root_name, knownTypes, maxItemsInObjectGraph, ignoreExtensionDataObject, dataContractSurrogate, alwaysEmitTypeInformation)
120 public DataContractJsonSerializer (Type type, DataContractJsonSerializerSettings settings)
121 : this (type, settings.RootName, settings.KnownTypes, settings.MaxItemsInObjectGraph, settings.IgnoreExtensionDataObject,
122 settings.DataContractSurrogate, false)
130 ReadOnlyCollection<Type> known_types;
132 bool ignore_extension;
133 bool always_emit_type;
134 IDataContractSurrogate surrogate;
137 public IDataContractSurrogate DataContractSurrogate {
138 get { return surrogate; }
142 public bool IgnoreExtensionDataObject {
143 get { return ignore_extension; }
145 public ReadOnlyCollection<Type> KnownTypes {
146 get { return known_types; }
149 public int MaxItemsInObjectGraph {
150 get { return max_items; }
153 public override bool IsStartObject (XmlReader reader)
156 throw new ArgumentNullException ("reader");
157 reader.MoveToContent ();
158 return reader.IsStartElement (root, String.Empty);
161 public override bool IsStartObject (XmlDictionaryReader reader)
163 return IsStartObject ((XmlReader) reader);
166 public override object ReadObject (Stream stream)
169 var r = (JsonReader) JsonReaderWriterFactory.CreateJsonReader(stream, XmlDictionaryReaderQuotas.Max);
170 r.LameSilverlightLiteralParser = true;
171 return ReadObject(r);
173 return ReadObject (JsonReaderWriterFactory.CreateJsonReader (stream, new XmlDictionaryReaderQuotas ()));
177 public override object ReadObject (XmlDictionaryReader reader)
179 return ReadObject (reader, true);
182 public override object ReadObject (XmlReader reader)
184 return ReadObject (reader, true);
187 public override object ReadObject (XmlDictionaryReader reader, bool verifyObjectName)
189 return ReadObject ((XmlReader) reader, verifyObjectName);
192 public override object ReadObject (XmlReader reader, bool verifyObjectName)
195 throw new ArgumentNullException ("reader");
197 if (verifyObjectName && !IsStartObject (reader))
198 throw new SerializationException (String.Format ("Expected element was '{0}', but the actual input element was '{1}' in namespace '{2}'", root, reader.LocalName, reader.NamespaceURI));
200 return new JsonSerializationReader (this, reader, type, verifyObjectName).ReadRoot ();
201 } catch (SerializationException) {
203 } catch (InvalidDataContractException) {
205 } catch (System.Reflection.TargetInvocationException ex) {
206 throw ex.InnerException;
207 } catch (Exception ex) {
208 throw new SerializationException ("Deserialization has failed", ex);
212 public override void WriteObject (Stream stream, object graph)
214 using (var xw = JsonReaderWriterFactory.CreateJsonWriter (stream))
215 WriteObject (xw, graph);
218 public override void WriteObject (XmlWriter writer, object graph)
221 WriteStartObject (writer, graph);
222 WriteObjectContent (writer, graph);
223 WriteEndObject (writer);
224 } catch (NotImplementedException) {
226 } catch (InvalidDataContractException) {
228 } catch (Exception ex) {
229 throw new SerializationException (String.Format ("There was an error during serialization for object of type {0}", graph != null ? graph.GetType () : null), ex);
233 public override void WriteObject (XmlDictionaryWriter writer, object graph)
235 WriteObject ((XmlWriter) writer, graph);
238 public override void WriteStartObject (XmlDictionaryWriter writer, object graph)
240 WriteStartObject ((XmlWriter) writer, graph);
243 public override void WriteStartObject (XmlWriter writer, object graph)
246 throw new ArgumentNullException ("writer");
247 writer.WriteStartElement (root);
250 public override void WriteObjectContent (XmlDictionaryWriter writer, object graph)
252 WriteObjectContent ((XmlWriter) writer, graph);
255 public override void WriteObjectContent (XmlWriter writer, object graph)
257 new JsonSerializationWriter (this, writer, type, always_emit_type).WriteObjectContent (graph, true, false);
260 public override void WriteEndObject (XmlDictionaryWriter writer)
262 WriteEndObject ((XmlWriter) writer);
265 public override void WriteEndObject (XmlWriter writer)
268 throw new ArgumentNullException ("writer");
269 writer.WriteEndElement ();
273 public DateTimeFormat DateTimeFormat {
274 get { throw new NotImplementedException (); }
278 public EmitTypeInformation EmitTypeInformation {
279 get { throw new NotImplementedException (); }
283 public bool SerializeReadOnlyTypes {
284 get { throw new NotImplementedException (); }
288 public bool UseSimpleDictionaryFormat {
289 get { throw new NotImplementedException (); }