/// <summary>
/// Determines the type name to write to the payload. Json Light type names are only written into the payload for open properties
/// or if the payload type name is more derived than the model type name.
/// </summary>
/// <param name="value">The ODataValue whose type name is to be written.</param>
/// <param name="propertyInfo">The serialization info of current property</param>
/// <param name="isOpenProperty">true if the type name belongs to an open property, false otherwise.</param>
/// <returns>Type name to write to the payload, or null if no type should be written.</returns>
internal override string GetValueTypeNameForWriting(
ODataValue value,
PropertySerializationInfo propertyInfo,
bool isOpenProperty)
{
PropertyValueTypeInfo valueType = propertyInfo.ValueType;
string typeNameToWrite;
if (TypeNameOracle.TryGetTypeNameFromAnnotation(value, out typeNameToWrite))
{
return(typeNameToWrite);
}
if (valueType.TypeReference != null)
{
// Do not write type name when the type is native json type.
if (valueType.IsPrimitive && JsonSharedUtils.ValueTypeMatchesJsonType((ODataPrimitiveValue)value, valueType.PrimitiveTypeKind))
{
return(null);
}
}
return(GetTypeNameFromValue(value));
}
/// <summary>
/// Determines the type name to write to the payload. Json Light type names are only written into the payload for open properties
/// or if the payload type name is more derived than the model type name.
/// </summary>
/// <param name="value">The ODataValue whose type name is to be written.</param>
/// <param name="propertyInfo">The serialization info of current property</param>
/// <param name="isOpenProperty">true if the type name belongs to an open property, false otherwise.</param>
/// <returns>Type name to write to the payload, or null if no type should be written.</returns>
internal override string GetValueTypeNameForWriting(
ODataValue value,
PropertySerializationInfo propertyInfo,
bool isOpenProperty)
{
string fullTypeNameFromValue = null;
PropertyValueTypeInfo valueType = propertyInfo.ValueType;
PropertyMetadataTypeInfo modelType = propertyInfo.MetadataType;
string typeNameToWrite;
if (TypeNameOracle.TryGetTypeNameFromAnnotation(value, out typeNameToWrite))
{
return(typeNameToWrite);
}
if (valueType.TypeReference != null)
{
fullTypeNameFromValue = valueType.FullName;
// Write type name when the type in the payload is more derived than the type from metadata.
if (modelType.TypeReference != null && modelType.FullName != fullTypeNameFromValue)
{
return(fullTypeNameFromValue);
}
// Do not write type name when the type is native json type.
if (valueType.IsPrimitive && JsonSharedUtils.ValueTypeMatchesJsonType((ODataPrimitiveValue)value, valueType.PrimitiveTypeKind))
{
return(null);
}
// Note: When writing derived complexType value in a payload, we don't have the expected type.
// So always write @odata.type for top-level derived complex type.
if (modelType.TypeReference == null && valueType.IsComplex)
{
if ((valueType.TypeReference as IEdmComplexTypeReference).ComplexDefinition().BaseType != null)
{
return(fullTypeNameFromValue);
}
}
}
if (!isOpenProperty)
{
// Do not write type name for non-open properties since we expect the reader to have an expected type (via API or context URI) and thus not need it.
return(null);
}
return(fullTypeNameFromValue != null ? fullTypeNameFromValue : GetTypeNameFromValue(value));
}