/// <summary>验证数据，通过抛出异常的方式提示验证失败。</summary>
/// <param name="isNew">是否插入</param>
public override void Valid(Boolean isNew)
{
// 如果没有脏数据，则不需要进行任何处理
if (!HasDirty)
{
return;
}
// 这里验证参数范围，建议抛出参数异常，指定参数名，前端用户界面可以捕获参数异常并聚焦到对应的参数输入框
if (When.IsNullOrEmpty())
{
throw new ArgumentNullException(nameof(When), "When不能为空！");
}
if (Source.IsNullOrEmpty())
{
throw new ArgumentNullException(nameof(Source), "Source不能为空！");
}
if (SubjectType.IsNullOrEmpty())
{
throw new ArgumentNullException(nameof(SubjectType), "SubjectType不能为空！");
}
if (SubjectIdentifier.IsNullOrEmpty())
{
throw new ArgumentNullException(nameof(SubjectIdentifier), "SubjectIdentifier不能为空！");
}
if (Subject.IsNullOrEmpty())
{
throw new ArgumentNullException(nameof(Subject), "Subject不能为空！");
}
if (Action.IsNullOrEmpty())
{
throw new ArgumentNullException(nameof(Action), "Action不能为空！");
}
if (ResourceType.IsNullOrEmpty())
{
throw new ArgumentNullException(nameof(ResourceType), "ResourceType不能为空！");
}
if (Resource.IsNullOrEmpty())
{
throw new ArgumentNullException(nameof(Resource), "Resource不能为空！");
}
if (ResourceIdentifier.IsNullOrEmpty())
{
throw new ArgumentNullException(nameof(ResourceIdentifier), "ResourceIdentifier不能为空！");
}
if (NormalisedSubject.IsNullOrEmpty())
{
throw new ArgumentNullException(nameof(NormalisedSubject), "NormalisedSubject不能为空！");
}
if (NormalisedAction.IsNullOrEmpty())
{
throw new ArgumentNullException(nameof(NormalisedAction), "NormalisedAction不能为空！");
}
if (NormalisedResource.IsNullOrEmpty())
{
throw new ArgumentNullException(nameof(NormalisedResource), "NormalisedResource不能为空！");
}
if (NormalisedSource.IsNullOrEmpty())
{
throw new ArgumentNullException(nameof(NormalisedSource), "NormalisedSource不能为空！");
}
// 在新插入数据或者修改了指定字段时进行修正
}