/// <summary>
/// 获取实体元数据。
/// </summary>
/// <param name="type">实体类型。</param>
/// <returns>返回实体元数据。如果出现错误则返回空。</returns>
public static IEntityMetadata GetMetadata(Type type)
{
if (type == null)
{
throw new ArgumentNullException(nameof(type));
}
if (_TargetedDescriptor.Count > 0)
{
var targeted = _TargetedDescriptor.Keys.FirstOrDefault(t => t.IsAssignableFrom(type));
if (targeted != null)
{
return(_TargetedDescriptor[targeted].GetMetadata(type));
}
}
return(_Descriptor.GetMetadata(type));
}
