/// <summary>
/// 从类型所有的装饰特性中，获取某类型的第一个匹配特性
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="typeDecoratorInfo"></param>
/// <param name="decoratorAttrType"></param>
/// <returns></returns>
public static T GetDecorateAttr <T>(this TypeDecoratorInfo typeDecoratorInfo)
where T : BaseDecorateAttribute
{
var attr = typeDecoratorInfo.TypeDecoratorAttrs.SingleOrDefault(a => a.GetType() == typeof(T));
return(attr == null ? null : (T)attr);
}
/// <summary>
/// 从类型所有的装饰特性中，获取某类型的所有匹配特性
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="typeDecoratorInfo"></param>
/// <param name="decoratorAttrType"></param>
/// <returns></returns>
public static List <T> GetDecorateAttrs <T>(this TypeDecoratorInfo typeDecoratorInfo)
where T : BaseDecorateAttribute
{
var attrs = typeDecoratorInfo.TypeDecoratorAttrs.Where(a => a.GetType() == typeof(T));
return(attrs == null ? null : attrs.Cast <T>().ToList());
}
public static TypeDecoratorInfo CreateInstance(Type exportType)
{
if (exportType == null)
{
throw new ArgumentNullException("importDTOType");
}
var key = exportType;
if (Table[key] != null)
{
return((TypeDecoratorInfo)Table[key]);
}
TypeDecoratorInfo typeDecoratorInfo = new TypeDecoratorInfo()
{
TypeDecoratorAttrs = new List <BaseDecorateAttribute>()
{
}, PropertyDecoratorInfos = new List <PropertyDecoratorInfo>()
{
}
};
//全局装饰特性
typeDecoratorInfo.TypeDecoratorAttrs.AddRange(exportType.GetCustomAttributes <BaseDecorateAttribute>());
//列装饰特性
List <PropertyInfo> props = exportType.GetProperties().ToList().Where(p => p.IsDefined(typeof(ColNameAttribute))).ToList();
for (int i = 0; i < props.Count(); i++)
{
typeDecoratorInfo.PropertyDecoratorInfos.Add(
new PropertyDecoratorInfo
{
ColIndex = i,
DecoratorAttrs = props[i].GetCustomAttributes <BaseDecorateAttribute>()?.ToList()
});
}
Table[key] = typeDecoratorInfo;
return(typeDecoratorInfo);
}
/// <summary>
/// 获取所有的装饰器
/// </summary>
/// <returns></returns>
private static List <IDecorator> GetDecorators <T>()
where T : class, new()
{
List <IDecorator> decorators = new List <IDecorator>();
List <BaseDecorateAttribute> attrs = new List <BaseDecorateAttribute>();
TypeDecoratorInfo typeDecoratorInfo = TypeDecoratorInfoFactory.CreateInstance(typeof(T));
attrs.AddRange(typeDecoratorInfo.TypeDecoratorAttrs);
typeDecoratorInfo.PropertyDecoratorInfos.ForEach(a => attrs.AddRange(a.DecoratorAttrs));
attrs.Distinct(new DecoratorAttributeComparer()).ToList().ForEach
(a =>
{
var decorator = DecoratorFactory.CreateInstance(a.GetType());
if (decorator != null)
{
decorators.Add(decorator);
}
});
return(decorators);
}
