C# 自动映射问题:递归投影LinqToSql堆栈溢出异常
使用上述LinqToSql实体类并尝试映射到类似命名的DTO对象会引发Stackoverflow异常。我已经读过了,这似乎是CriteriaGroup对象的子/父关系的问题。有人有什么建议吗 用于调用此函数的代码:C# 自动映射问题:递归投影LinqToSql堆栈溢出异常,c#,linq-to-sql,automapper,C#,Linq To Sql,Automapper,使用上述LinqToSql实体类并尝试映射到类似命名的DTO对象会引发Stackoverflow异常。我已经读过了,这似乎是CriteriaGroup对象的子/父关系的问题。有人有什么建议吗 用于调用此函数的代码: var mappedDtos = this.configurationRepository .GetAll() .Project() .To
var mappedDtos = this.configurationRepository
.GetAll()
.Project()
.To<CriteriaGroupDto>();
var mappedDtos=this.configurationRepository
.GetAll()
.Project(项目)
.To();
其中GetAll()是:
public override IQueryable GetAll()
{
返回此.Table.AsQueryable();
}
我为此创建的映射代码是:
/// <summary>
/// The criteria profile.
/// </summary>
public class CriteriaProfile : Profile
{
/// <summary>
/// The configure.
/// </summary>
protected override void Configure()
{
Mapper.CreateMap<CriteriaGroup, CriteriaGroupDto>()
.ForMember(dest => dest.Groups, opt => opt.MapFrom(src => src.Children))
.ForMember(dest => dest.Parent, opt => opt.MapFrom(src => src.Parent))
.ForMember(dest => dest.Criteria, opt => opt.MapFrom(src => src.CriteriaConfigs));
Mapper.CreateMap<CriteriaConfig, CriteriaConfigDto>()
.Include<RatingConfig, CriteriaConfigDto>()
.Include<CountryConfig, CriteriaConfigDto>()
.Include<TimescaleConfig, CriteriaConfigDto>()
.ForMember(dest => dest.DefaultValue, opt => opt.UseValue(default(object)))
.ForMember(dest => dest.DataType, opt => opt.Ignore())
.ForMember(dest => dest.ElementId, opt => opt.MapFrom(src => src.Id))
.ForMember(dest => dest.Options, opt => opt.Ignore());
Mapper.CreateMap<RatingConfig, CriteriaConfigDto>()
.ForMember(dest => dest.JoinOperators, opt => opt.MapFrom(src => src.JoinOperators))
.ForMember(dest => dest.OptionOperators, opt => opt.MapFrom(src => src.Operators));
Mapper.CreateMap<CountryConfig, CriteriaConfigDto>()
.ForMember(dest => dest.JoinOperators, opt => opt.MapFrom(src => src.JoinOperators))
.ForMember(dest => dest.OptionOperators, opt => opt.MapFrom(src => src.Operators));
Mapper.CreateMap<TimescaleConfig, CriteriaConfigDto>()
.ForMember(dest => dest.JoinOperators, opt => opt.MapFrom(src => src.JoinOperators))
.ForMember(dest => dest.OptionOperators, opt => opt.MapFrom(src => src.Operators));
base.Configure();
}
}
//
///标准配置文件。
///
公共类标准配置文件:配置文件
{
///
///配置。
///
受保护的覆盖无效配置()
{
Mapper.CreateMap()
.ForMember(dest=>dest.Groups,opt=>opt.MapFrom(src=>src.Children))
.FormMember(dest=>dest.Parent,opt=>opt.MapFrom(src=>src.Parent))
.ForMember(dest=>dest.Criteria,opt=>opt.MapFrom(src=>src.CriteriaConfigs));
Mapper.CreateMap()
.包括()
.包括()
.包括()
.FormMember(dest=>dest.DefaultValue,opt=>opt.UseValue(默认(对象)))
.FormMember(dest=>dest.DataType,opt=>opt.Ignore())
.ForMember(dest=>dest.ElementId,opt=>opt.MapFrom(src=>src.Id))
.ForMember(dest=>dest.Options,opt=>opt.Ignore());
Mapper.CreateMap()
.FormMember(dest=>dest.JoinOperators,opt=>opt.MapFrom(src=>src.JoinOperators))
.ForMember(dest=>dest.OptionOperators,opt=>opt.MapFrom(src=>src.Operators));
Mapper.CreateMap()
.FormMember(dest=>dest.JoinOperators,opt=>opt.MapFrom(src=>src.JoinOperators))
.ForMember(dest=>dest.OptionOperators,opt=>opt.MapFrom(src=>src.Operators));
Mapper.CreateMap()
.FormMember(dest=>dest.JoinOperators,opt=>opt.MapFrom(src=>src.JoinOperators))
.ForMember(dest=>dest.OptionOperators,opt=>opt.MapFrom(src=>src.Operators));
base.Configure();
}
}
其中,驱动类中的额外映射是由于:(例如)
//
///评级配置。
///
公共部分类RatingConfig
{
///
///获取运算符。
///
公共IEnumerable运算符
{
得到
{
返回枚举.GetAll();
}
}
///
///获取联接运算符。
///
公共IEnumerable联合运算符
{
得到
{
返回枚举.GetAll();
}
}
}
您试图检索多少数据库行?哦,实际上不多。想想测试数据中有几百条记录。您是否尝试过这样做。configurationRepository.GetAll().ToList().Project().To();在数据中,您可能至少有一条记录,其中ParentCriteriaGroupId等于导致异常的CriteriaGroup表上的Id
/// <summary>
/// The criteria profile.
/// </summary>
public class CriteriaProfile : Profile
{
/// <summary>
/// The configure.
/// </summary>
protected override void Configure()
{
Mapper.CreateMap<CriteriaGroup, CriteriaGroupDto>()
.ForMember(dest => dest.Groups, opt => opt.MapFrom(src => src.Children))
.ForMember(dest => dest.Parent, opt => opt.MapFrom(src => src.Parent))
.ForMember(dest => dest.Criteria, opt => opt.MapFrom(src => src.CriteriaConfigs));
Mapper.CreateMap<CriteriaConfig, CriteriaConfigDto>()
.Include<RatingConfig, CriteriaConfigDto>()
.Include<CountryConfig, CriteriaConfigDto>()
.Include<TimescaleConfig, CriteriaConfigDto>()
.ForMember(dest => dest.DefaultValue, opt => opt.UseValue(default(object)))
.ForMember(dest => dest.DataType, opt => opt.Ignore())
.ForMember(dest => dest.ElementId, opt => opt.MapFrom(src => src.Id))
.ForMember(dest => dest.Options, opt => opt.Ignore());
Mapper.CreateMap<RatingConfig, CriteriaConfigDto>()
.ForMember(dest => dest.JoinOperators, opt => opt.MapFrom(src => src.JoinOperators))
.ForMember(dest => dest.OptionOperators, opt => opt.MapFrom(src => src.Operators));
Mapper.CreateMap<CountryConfig, CriteriaConfigDto>()
.ForMember(dest => dest.JoinOperators, opt => opt.MapFrom(src => src.JoinOperators))
.ForMember(dest => dest.OptionOperators, opt => opt.MapFrom(src => src.Operators));
Mapper.CreateMap<TimescaleConfig, CriteriaConfigDto>()
.ForMember(dest => dest.JoinOperators, opt => opt.MapFrom(src => src.JoinOperators))
.ForMember(dest => dest.OptionOperators, opt => opt.MapFrom(src => src.Operators));
base.Configure();
}
}
/// <summary>
/// The rating config.
/// </summary>
public partial class RatingConfig
{
/// <summary>
/// Gets the operators.
/// </summary>
public IEnumerable<RatingOperator> Operators
{
get
{
return Enumeration.GetAll<RatingOperator>();
}
}
/// <summary>
/// Gets the join operators.
/// </summary>
public IEnumerable<RuleJoinOperator> JoinOperators
{
get
{
return Enumeration.GetAll<RuleJoinOperator>();
}
}
}