The following example fails to convert successfully as during deserialization it creates the Expression as Expression<Func<Profile, Anonymous[string, string]>> rather than Expression<Func<Profile, object>>, even though that is the object type passed into the converter.ReadJson method
static void Main(string[] args)
{
var profile = new Profile()
{
Email = "bob@bob.com",SiteCode = "www.testweb.com",FirstName = "bob"
};
var settings = new JsonSerializerSettings() {TypeNameHandling = TypeNameHandling.Objects};
settings.Converters.Add(new ExpressionConverter<Expression<Func<Profile, object>>>());
var indexDefinition2 = new FoundocIndex<Profile>()
{
IndexType = IndexType.ImmediatelyConsistent,
IsUniqueConstraint = true,
Name = "ByEmail",
Map = (p => new { profile.SiteCode, profile.Email })
};
var test2 = JsonConvert.SerializeObject(indexDefinition2, settings);
var indexDefinition3 = JsonConvert.DeserializeObject<FoundocIndex<Profile>>(test2, settings);//<--fails
}
public class ExpressionConverter<T> : JsonConverter where T:class
{
public override bool CanConvert(Type objectType)
{
bool canConvert = objectType == typeof (T);
return canConvert;
}
public override bool CanRead
{
get
{
return true;
}
}
public override bool CanWrite
{
get
{
return true;
}
}
public override void WriteJson(JsonWriter writer, object value, JsonSerializer serializer)
{
var expression = (Expression)value;
var converter = new Aq.ExpressionJsonSerializer.ExpressionJsonConverter(this.GetType().Assembly);
converter.WriteJson(writer, expression, new JsonSerializer());
}
public override object ReadJson(JsonReader reader, Type objectType, object existingValue, JsonSerializer serializer)
{
var converter = new Aq.ExpressionJsonSerializer.ExpressionJsonConverter(this.GetType().Assembly);
var result = converter.ReadJson(reader, objectType, existingValue, serializer);
return result;
}
}
The following example fails to convert successfully as during deserialization it creates the Expression as
Expression<Func<Profile, Anonymous[string, string]>>rather thanExpression<Func<Profile, object>>, even though that is the object type passed into the converter.ReadJson method