/// <summary>
/// Serialize the object into JSON.
/// </summary>
/// <param name="writer">JSON writer.</param>
/// <param name="value">PropertyValue to be serialized.</param>
/// <param name="serializer">JSON serializer.</param>
public override void WriteJson(JsonWriter writer, object value, JsonSerializer serializer)
{
if (value == null)
{
return;
}
ChangeTrackingCollection <GraphObject> graphObjects = value as ChangeTrackingCollection <GraphObject>;
if (graphObjects == null)
{
if (!(value is IEnumerable))
{
throw new ArgumentException("parameter 'value' is not of type IEnumerable.");
}
graphObjects = new ChangeTrackingCollection <GraphObject>();
IEnumerable iEnumerableValue = value as IEnumerable;
foreach (object valueObject in iEnumerableValue)
{
GraphObject graphObject = valueObject as GraphObject;
if (graphObject == null)
{
throw new ArgumentException(
"Each value in the ChangeTrackingCollection should be of type GraphObject.");
}
graphObjects.Add(graphObject);
}
}
if (graphObjects.Count > 0)
{
throw new ArgumentException("Updating links is not supported from entity.");
}
writer.WriteNull();
}
/// <summary>
/// Read JSON string to the object.
/// </summary>
/// <param name="reader">JSON reader.</param>
/// <param name="objectType">Object type.</param>
/// <param name="existingValue">Existing value.</param>
/// <param name="serializer">Json serializer</param>
/// <returns>Deserialized object.</returns>
/// <remarks>
/// 1. Check if this is an array or a single element.
/// If Array, deserialize each element as DirectoryObject and return the list
/// 2. Deserialize using the default property set
/// 3. Find the non-deserialized properties and add them to the Dictionary.
/// </remarks>
public override object ReadJson(
JsonReader reader, Type objectType, object existingValue, JsonSerializer serializer)
{
if (reader.TokenType == JsonToken.StartArray)
{
JToken jsonToken = JArray.ReadFrom(reader);
List <JToken> jsonTokens = jsonToken.ToList();
// This converter can only handle an array of graph objects.
// Not native types. When deserializing an expanded link, all linked objects will be
// deserialized as GraphObject.
ChangeTrackingCollection <GraphObject> resultObjects = new ChangeTrackingCollection <GraphObject>();
AadJsonConverter jsonConverter = new AadJsonConverter();
foreach (JToken arrayToken in jsonTokens)
{
GraphObject resultElement = JsonConvert.DeserializeObject(
arrayToken.ToString(), typeof(GraphObject), jsonConverter) as GraphObject;
resultObjects.Add(resultElement);
}
return(resultObjects);
}
// Load the JSON into a JsonObject so that we can inspect the odata.type property.
Object resultObject;
JObject jsonObject = JObject.Load(reader);
List <JProperty> jsonProperties = jsonObject.Properties().ToList();
JProperty odataTypeProperty =
jsonProperties.FirstOrDefault(x => x.Name == Constants.OdataTypeKey);
// If there is odata.type value, use that to find the type to be deserialized into.
// If not, use the type that was passed to the de-serializer.
Type resultObjectType;
if (odataTypeProperty != null &&
SerializationHelper.TryGetImplementationForAadType(
odataTypeProperty.Value.ToString(), out resultObjectType) &&
typeof(GraphObject).IsAssignableFrom(resultObjectType))
{
resultObject = Activator.CreateInstance(resultObjectType) as GraphObject;
}
else
{
resultObjectType = objectType;
resultObject = Activator.CreateInstance(resultObjectType);
}
// Deserialize all known properties using the default JSON.NET serializer
resultObject = JsonConvert.DeserializeObject(jsonObject.ToString(), resultObjectType);
// TODO: If the odata type is null, should still try to deserialize additional values using
// the graphObjectType.
GraphObject graphObject = resultObject as GraphObject;
if (graphObject != null && odataTypeProperty != null)
{
Dictionary <string, PropertyInfo> propertyNameToInfoMap =
this.GetPropertyInfosForAadType(odataTypeProperty.Value.ToString(), resultObjectType);
foreach (JProperty jsonProperty in jsonProperties)
{
PropertyInfo propertyInfo;
if (!propertyNameToInfoMap.TryGetValue(jsonProperty.Name, out propertyInfo))
{
graphObject.NonSerializedProperties[jsonProperty.Name] = jsonProperty.Value.ToString();
}
}
}
return(graphObject);
}
