Question

我有这种情况：

public class Survey : EntityBase
{
    public virtual string Name { get; set; }
}

public class Response : EntityBase
{
    public virtual string Name { get; set; }
    public virtual Survey Survey { get; set; }
}

public class SurveyMap : ClassMap<Survey>
{
    public SurveyMap()
    {
        this.Id(e => e.Id);
        this.Map(e => e.Name);
    }
}

public class ResponseMap : ClassMap<Response>
{
    public ResponseMap()
    {
        this.Id(e => e.Id);
        this.Map(e => e.Name);
        this.References(e => e.Survey);         
    }
}

我希望在删除调查时自动删除回复，如何使用Fluent NHibernate进行配置。

谢谢！

Answer 1

您应该向Survey实体添加一个属性：

public class Survey : EntityBase 
{
    public virtual string Name { get; set; } 
    public IList<Response> Responses { get; set; }
}

使用级联映射：

public class SurveyMap : ClassMap<Survey>
{
    public SurveyMap()
    {
        this.Id(e => e.Id);
        this.Map(e => e.Name);
        this.HasMany( e => e.Responses ).Inverse().Cascade().All();
    }
}

Answer 2

尝试设置引用以使用delete-orphan选项。

NHibernate Cascades: the different between all, all-delete-orphans and save-update

NHibernate多对一级联删除（如何？）

2 个答案: