/// <summary>
/// Read the specified element
/// </summary>
public object ReadElementUtil(JsonReader r, Type t, JsonSerializationContext context)
{
var nonGenericT = t.StripGeneric();
var classifier = this.GetClassifier(nonGenericT);
switch (r.TokenType)
{
case JsonToken.StartObject:
{
var formatter = this.GetFormatter(nonGenericT);
bool isList = typeof(IList).IsAssignableFrom(t);
// Classifier???
if (classifier == null || !isList)
{
if (isList)
{
var retVal = Activator.CreateInstance(t) as IList;
retVal.Add(formatter.Deserialize(r, t, context));
return(retVal);
}
else
{
return(formatter.Deserialize(r, t, context));
}
}
else
{
// Classifier each of these properties aren't real properties, rather they are classified things
int depth = r.Depth;
Dictionary <String, Object> values = new Dictionary <string, object>();
while (r.Read() && !(r.TokenType == JsonToken.EndObject && r.Depth == depth))
{
// Classifier
if (r.TokenType != JsonToken.PropertyName)
{
throw new JsonException($"Expected PropertyName token got {r.TokenType}");
}
string propertyName = (String)r.Value;
r.Read(); // Read proeprty name
values.Add(propertyName, this.ReadElementUtil(r, r.TokenType == JsonToken.StartObject ? nonGenericT : t, new JsonSerializationContext(propertyName, this, values, context)));
}
return(classifier.Compose(values, t));
}
}
// Array read, we want to re-call the specified parse
case JsonToken.StartArray:
{
if (!typeof(IList).IsAssignableFrom(t))
{
throw new JsonSerializationException($"{t} does not implement IList at {r.Path}");
}
int depth = r.Depth;
var listInstance = Activator.CreateInstance(t) as IList;
while (r.Read() && !(r.TokenType == JsonToken.EndArray && r.Depth == depth))
{
listInstance.Add(this.ReadElementUtil(r, nonGenericT, context));
}
return(listInstance);
}
case JsonToken.Null:
case JsonToken.Boolean:
case JsonToken.Bytes:
case JsonToken.Float:
case JsonToken.Date:
case JsonToken.Integer:
case JsonToken.String:
if (typeof(IdentifiedData).IsAssignableFrom(nonGenericT)) // Complex object
{
var formatter = this.GetFormatter(nonGenericT);
return(formatter.FromSimpleValue(r.Value));
}
else
{
// Not a simple value attribute so let's just handle it as normal
switch (r.TokenType)
{
case JsonToken.Null:
return(null);
case JsonToken.Boolean:
case JsonToken.Bytes:
return(r.Value);
case JsonToken.Float:
if (t.StripNullable() == typeof(Decimal))
{
return(Convert.ToDecimal(r.Value));
}
else if (t.StripNullable() == typeof(Int32))
{
return(Convert.ToInt32(r.Value));
}
else if (t.StripNullable().IsEnum)
{
return(Enum.ToObject(t.StripNullable(), Convert.ToInt32(r.Value)));
}
else
{
return((Double)r.Value);
}
case JsonToken.Date:
t = t.StripNullable();
if (t == typeof(DateTime))
{
return((DateTime)r.Value);
}
else if (t == typeof(String))
{
return(((DateTime)r.Value).ToString("o"));
}
else
{
return(new DateTimeOffset((DateTime)r.Value));
}
case JsonToken.Integer:
t = t.StripNullable();
if (t.StripNullable().IsEnum)
{
return(Enum.ToObject(t.StripNullable(), r.Value));
}
return(Convert.ChangeType(r.Value, t));
case JsonToken.String:
if (String.IsNullOrEmpty((string)r.Value))
{
return(null);
}
else if (t.StripNullable() == typeof(Guid))
{
return(Guid.Parse((string)r.Value));
}
else if (t.StripNullable() == typeof(Int32))
{
return("NaN".Equals(r.Value) ? 0 : Int32.Parse((String)r.Value));
}
else if (t.StripNullable() == typeof(Decimal))
{
return(Decimal.Parse((String)r.Value));
}
else if (t.StripNullable() == typeof(byte[]))
{
return(Convert.FromBase64String((String)r.Value));
}
else if (t.StripNullable().IsEnum&& r.ValueType == typeof(String))
{
return(Enum.Parse(t.StripNullable(), (string)r.Value));
}
else
{
return(r.Value);
}
default:
return(r.Value);
}
}
default:
throw new JsonSerializationException("Invalid serialization");
}
}
/// <summary>
/// De-serialize the specified object from the class
/// </summary>
public Object Deserialize(JsonReader r, Type asType, JsonSerializationContext context)
{
var retVal = new Object();
if (!asType.IsAbstract)
{
retVal = Activator.CreateInstance(asType);
}
int depth = r.TokenType == JsonToken.StartObject ? r.Depth : r.Depth - 1; // current depth
var properties = GetPropertyInfo(asType);
// We will parse this until we can no longer parse
while (r.Read())
{
switch (r.TokenType)
{
// The current reader is at an end of object
case JsonToken.EndObject:
if (depth == r.Depth)
{
return(retVal);
}
else
{
throw new JsonSerializationException("JSON in invalid state");
}
// Current reader is at a property name
case JsonToken.PropertyName:
switch ((String)r.Value)
{
case "$type":
var xsiType = s_binder.BindToType(asType.Assembly.FullName, r.ReadAsString());
if (xsiType != asType)
{
var fmtr = context.JsonContext.GetFormatter(xsiType);
var nRetVal = fmtr.Deserialize(r, xsiType, context);
nRetVal.CopyObjectData(retVal);
return(nRetVal);
}
break;
case "$ref": // TODO: lookup reference
break;
default:
string propertyName = r.Value as String;
PropertyInfo propertyInfo = null;
if (properties.TryGetValue(propertyName, out propertyInfo))
{
// Read next token
r.Read();
var instance = context.JsonContext.ReadElementUtil(r, propertyInfo.PropertyType, new JsonSerializationContext(propertyName, context.JsonContext, retVal, context));
if (!(instance == null || (instance as IList)?.Count == 0))
{
propertyInfo.SetValue(retVal, instance);
}
}
else
{
r.Skip();
}
break;
}
break;
}
}
return(retVal);
}
/// <summary>
/// Creates a new JSON serialization context
/// </summary>
public JsonSerializationContext(String propertyName, JsonViewModelSerializer context, Object instance, JsonSerializationContext parent) : base(propertyName, context, instance, parent)
{
}
/// <summary>
/// Serialize the specified object to the wire
/// </summary>
public void Serialize(JsonWriter w, IdentifiedData o, JsonSerializationContext context)
{
if (o == null)
{
throw new ArgumentNullException(nameof(o));
}
// For each item in the property ...
bool loadedProperties = false;
// Iterate properties
foreach (var propertyInfo in o.GetType().GetRuntimeProperties())
{
// Get the property name
var propertyName = GetPropertyName(propertyInfo);
if (propertyName == null || propertyName.StartsWith("$")) // Skip internal property names
{
continue;
}
// Serialization decision
if (!context.ShouldSerialize(propertyName))
{
continue;
}
// Get the property
var value = propertyInfo.GetValue(o);
// Null ,do we want to force load?
if (value == null || (value as IList)?.Count == 0)
{
var tkey = o.Key.HasValue ? o.Key.Value : Guid.NewGuid();
if (context.ShouldForceLoad(propertyName, tkey))
{
if (value is IList && !propertyInfo.PropertyType.IsArray)
{
if (o.Key.HasValue)
{
value = context.JsonContext.LoadCollection(propertyInfo.PropertyType, (Guid)o.Key);
}
propertyInfo.SetValue(o, value);
loadedProperties = (value as IList).Count > 0;
}
else
{
var keyPropertyRef = propertyInfo.GetCustomAttribute <SerializationReferenceAttribute>();
if (keyPropertyRef != null)
{
var keyProperty = o.GetType().GetRuntimeProperty(keyPropertyRef.RedirectProperty);
var key = keyProperty.GetValue(o);
if (key != null)
{
value = context.JsonContext.LoadRelated(propertyInfo.PropertyType, (Guid)key);
propertyInfo.SetValue(o, value);
loadedProperties = value != null;
}
}
}
}
else
{
continue;
}
}
// TODO: Classifier
context.JsonContext.WritePropertyUtil(w, propertyName, value, context);
}
// Loaded something, let's cache it
if (loadedProperties && o.Key.HasValue && ((o as IVersionedEntity) == null || (o as IVersionedEntity)?.VersionKey.HasValue == true) &&
o.LoadState != LoadState.New)
{
(ApplicationServiceContext.Current.GetService(typeof(IDataCachingService)) as IDataCachingService).Add(o);
}
}
