/// <summary>
/// Adds polymorphism.
/// </summary>
/// <param name="options">The options used to generate the swagger.json file.</param>
/// <param name="services">Specifies the contract for a collection of service descriptors.</param>
public static void AddPolymorphism(this SwaggerGenOptions options, IServiceCollection services)
{
var serviceProvider = services.BuildServiceProvider();
var jsonOptions = serviceProvider.GetService <IOptions <JsonOptions> >();
if (jsonOptions == null)
{
return;
}
var jsonSerializerOptions = jsonOptions.Value.JsonSerializerOptions;
var polymorphicConverters = jsonSerializerOptions?.Converters?.Where(x => {
var converterType = x.GetType();
if (!(converterType.IsGenericType && converterType.GetGenericTypeDefinition().IsAssignableFrom(typeof(JsonPolymorphicConverterFactory <>))))
{
return(false);
}
return(true);
})
.Cast <IJsonPolymorphicConverterFactory>();
if (!polymorphicConverters.Any())
{
return;
}
foreach (var converter in polymorphicConverters)
{
var baseType = converter.BaseType;
var discriminator = jsonSerializerOptions.PropertyNamingPolicy.ConvertName(converter.TypePropertyName);
var mapping = JsonPolymorphicUtils.GetTypeMapping(baseType, discriminator);
options.SchemaFilter <PolymorphicSchemaFilter>(baseType, discriminator, mapping);
options.OperationFilter <PolymorphicOperationFilter>(new PolymorphicSchemaFilter(baseType, discriminator, mapping));
}
}
/// <summary>
/// Initializes a new instance of the <see cref="JsonPolymorphicConverter{T}"/> class.
/// </summary>
/// <param name="typePropertName">The name of the property in which to serialize the type name.</param>
public JsonPolymorphicConverter(string typePropertName) : this(typePropertName, JsonPolymorphicUtils.GetTypeMapping(typeof(T), typePropertName))
{
}
