public void SerializeCircularReferencesWithConverter()
{
CircularReferenceClass c1 = new CircularReferenceClass {
Name = "c1"
};
CircularReferenceClass c2 = new CircularReferenceClass {
Name = "c2"
};
CircularReferenceClass c3 = new CircularReferenceClass {
Name = "c3"
};
c1.Child = c2;
c2.Child = c3;
c3.Child = c1;
string json = JsonConvert.SerializeObject(c1, Formatting.Indented, new JsonSerializerSettings
{
PreserveReferencesHandling = PreserveReferencesHandling.Objects,
Converters = new List <JsonConverter> {
new CircularReferenceClassConverter()
}
});
StringAssert.AreEqual(@"{
""$id"": ""1"",
""$type"": ""CircularReferenceClass"",
""Name"": ""c1"",
""Child"": {
""$id"": ""2"",
""$type"": ""CircularReferenceClass"",
""Name"": ""c2"",
""Child"": {
""$id"": ""3"",
""$type"": ""CircularReferenceClass"",
""Name"": ""c3"",
""Child"": {
""$ref"": ""1""
}
}
}
}", json);
}
public override object ReadJson(
JsonReader reader,
Type objectType,
object existingValue,
JsonSerializer serializer
)
{
JObject o = JObject.Load(reader);
string id = (string)o["$id"];
if (id != null)
{
CircularReferenceClass circularReferenceClass = new CircularReferenceClass();
serializer.Populate(o.CreateReader(), circularReferenceClass);
return(circularReferenceClass);
}
else
{
string reference = (string)o["$ref"];
return(serializer.ReferenceResolver.ResolveReference(serializer, reference));
}
}
public void DeserializeCircularReferencesWithConverter()
{
string json =
@"{
""$id"": ""1"",
""$type"": ""CircularReferenceClass"",
""Name"": ""c1"",
""Child"": {
""$id"": ""2"",
""$type"": ""CircularReferenceClass"",
""Name"": ""c2"",
""Child"": {
""$id"": ""3"",
""$type"": ""CircularReferenceClass"",
""Name"": ""c3"",
""Child"": {
""$ref"": ""1""
}
}
}
}";
CircularReferenceClass c1 = JsonConvert.DeserializeObject <CircularReferenceClass>(
json,
new JsonSerializerSettings
{
PreserveReferencesHandling = PreserveReferencesHandling.Objects,
Converters = new List <JsonConverter> {
new CircularReferenceClassConverter()
}
}
);
Assert.AreEqual("c1", c1.Name);
Assert.AreEqual("c2", c1.Child.Name);
Assert.AreEqual("c3", c1.Child.Child.Name);
Assert.AreEqual("c1", c1.Child.Child.Child.Name);
}
