/// <summary>
/// 请求Api的返回描述
/// </summary>
/// <param name="method">方法信息</param>
/// <param name="interfaceType">接口类型</param>
/// <exception cref="ArgumentNullException"></exception>
public ApiReturnDescriptor(MethodInfo method, Type interfaceType)
{
if (method == null)
{
throw new ArgumentNullException(nameof(method));
}
var type = method.ReturnType.IsGenericType
? method.ReturnType.GetGenericArguments().First()
: typeof(HttpResponseMessage);
var dataType = new ApiDataTypeDescriptor(type);
this.ReturnType = method.ReturnType;
this.DataType = dataType;
this.Attributes = method
.GetAttributes <IApiReturnAttribute>()
.Concat(interfaceType.GetAttributes <IApiReturnAttribute>(inclueBases: true))
.Concat(GetDefaultAttributes(dataType))
.Distinct(MultiplableComparer <IApiReturnAttribute> .Default)
.OrderBy(item => item.OrderIndex)
.Where(item => item.Enable)
// 最后步骤为比较媒体类型
.Distinct(MediaTypeComparer.Default)
.ToReadOnlyList();
}
/// <summary>
/// 获取默认特性
/// </summary>
/// <param name="dataType"></param>
/// <returns></returns>
private static IEnumerable <IApiReturnAttribute> GetDefaultAttributes(ApiDataTypeDescriptor dataType)
{
const double acceptQuality = 0.001;
if (dataType.IsRawType == true)
{
yield return(new RawReturnAttribute(acceptQuality));
}
else
{
yield return(new JsonReturnAttribute(acceptQuality));
yield return(new XmlReturnAttribute(acceptQuality));
yield return(new NoneReturnAttribute(acceptQuality));
}
}
/// <summary>
/// 请求Api的返回描述
/// </summary>
/// <param name="returnType">方法返回类型</param>
/// <param name="methodAttributes">方法的特性</param>
/// <param name="interfaceAttributes">接口的特性</param>
public ApiReturnDescriptor(Type returnType, IEnumerable <Attribute> methodAttributes, IEnumerable <Attribute> interfaceAttributes)
{
var type = returnType.IsGenericType
? returnType.GetGenericArguments().First()
: typeof(HttpResponseMessage);
var dataType = new ApiDataTypeDescriptor(type);
this.ReturnType = returnType;
this.DataType = dataType;
this.Attributes = methodAttributes
.OfType <IApiReturnAttribute>()
.Concat(interfaceAttributes.OfType <IApiReturnAttribute>())
.Concat(GetDefaultAttributes(dataType))
.Distinct(MultiplableComparer <IApiReturnAttribute> .Default)
.OrderBy(item => item.OrderIndex)
.Where(item => item.Enable)
// 最后步骤为比较媒体类型
.Distinct(MediaTypeComparer.Default)
.ToReadOnlyList();
}
/// <summary>
/// 请求Api的返回描述
/// </summary>
/// <param name="method">方法信息</param>
/// <exception cref="ArgumentNullException"></exception>
public ApiReturnDescriptor(MethodInfo method)
{
if (method == null)
{
throw new ArgumentNullException(nameof(method));
}
var type = method.ReturnType.IsGenericType ?
method.ReturnType.GetGenericArguments().FirstOrDefault() :
typeof(HttpResponseMessage);
var dataType = new ApiDataTypeDescriptor(type);
this.ReturnType = method.ReturnType;
this.DataType = dataType;
this.IsTaskDefinition = method.ReturnType.IsInheritFrom <Task>();
this.Attributes = method
.FindDeclaringAttributes <IApiReturnAttribute>(true)
.Concat(GetDefaultAttributes(dataType))
.Distinct(new MultiplableComparer <IApiReturnAttribute>())
.OrderBy(item => item.OrderIndex)
.Where(item => item.Enable)
.ToReadOnlyList();
}
