Selecting child projection from parent - linq-to-nhibernate

Here are three classes in my domain:
public class Quote : IEntity, IAggregateRoot {
public int QuoteId { get; set; }
public IEnumerable<Price> Prices { get; set; }
}
public class Price : IEntity {
public int PriceId { get; set; }
public Carrier Carrier { get; set; }
public decimal? Price { get; set; }
public Quote Quote { get; set; }
}
public class Carrier : IEntity, IAggregateRoot {
public int CarrierId { get; set; }
public string Name { get; set; }
}
I want to be able to select a projection based on the Prices in the Quote. The return type should be an IEnumerable<[anonymous object]>. I have to start the query from the Quote because it is the root domain object. Here is what I have so far:
session.Linq<Quote>()
.Expand("Prices")
.Where(q => q.QuoteId == 1)
.Select(q => {
//this is where I don't know what to do.
//Maybe somthing like this:
return q.Prices.Select(p => {
new { CustomerName = p.Customer.Name, Price = p.Price }
});
});
The mappings would be:
Quote.Prices > HasMany (one-to-many)
Price.Quote > References (many-to-one)
Price.Carrier > References (one-to-one)

I found my answer. I completely forgot about the SelectMany Linq expression. Here is my solution.
session.Linq<Quote>()
.Where(q => q.QuoteId == 1)
.SelectMany(q => q.Prices, (q, p) => new { CustomerName = p.Customer.Name });

Related

AutoMapper .ReverseMap() .Ignore() not working

Having an issue with version 6.1.1. In the below, the result of the reverse map still has the Company object populated. Per this post, which shows what I am doing below, except they are ignoring a property, and I'm ignoring a complex object.
What am I missing?
CreateMap<Item, ItemViewModel>(MemberList.Destination)
.ReverseMap()
.ForMember(x => x.Company, x => x.Ignore())
;
With AutoMapper 6.1 you could use ForPath instead ForMember to ignore complex objects.
See How to ignore property with ReverseMap for further information.
I see not what is wrong, but here is a running sample:
namespace AutomapperTest2
{
internal class Program
{
#region Methods
private static void Main(string[] args)
{
// Configure the mappings
Mapper.Initialize(cfg =>
{
cfg.CreateMap<ApplicantEducation, ApplicantEducationVM>();
cfg.CreateMap<Applicant, ApplicantVM>().ReverseMap()
.ForMember(x => x.Education, x => x.Ignore());
});
var config = new MapperConfiguration(cfg => cfg.CreateMissingTypeMaps = true);
var mapper = config.CreateMapper();
Applicant ap = new Applicant
{
Name = "its me",
Education =
new ApplicantEducation
{
SomeInt = 10,
SomeString = "sampleString"
}
};
// Map
ApplicantVM apVm = Mapper.Map<Applicant, ApplicantVM>(ap);
Applicant apBack = Mapper.Map<ApplicantVM, Applicant>(apVm);
}
#endregion
}
/// Your source classes
public class Applicant
{
public ApplicantEducation Education { get; set; }
public string Name { get; set; }
}
public class ApplicantEducation
{
public int SomeInt { get; set; }
public string SomeString { get; set; }
}
// Your VM classes
public class ApplicantVM
{
public string Description { get; set; }
public ApplicantEducationVM Education { get; set; }
public string Name { get; set; }
}
public class ApplicantEducationVM
{
public int SomeInt { get; set; }
public string SomeString { get; set; }
}
}
}

AutoMapper mapping based on containing property name

Is it possible mapping two classes based on their similar property names:
class Source {
public int uId { get; set; }
public string PrefixRef { get; set; }
...
}
class Destination {
public int Id { get; set; }
public string Prefix { get; set; }
...
}
Thanks.
UPDATE:
-1, smart alek.
I'm totally new to AutoMapper.
Mapper.Initialize(cfg => {
cfg.RecognizePrefixes(new[] { "u" });
cfg.RecognizePostfixes(new[] { "Ref" });
cfg.CreateMap<Source, Destination>();
});

Automapper, Mapping one object member type to multiple concrete type

I have this Party class which contains an object data type coming from a service. It can contain two different member types for the Item property.
public class Party
{
public string DMVID {get; set;}
public object Item { get; set; }
}
and this DTO
public class PartyDTO
{
public string DMVID {get; set;}
public BusinessDTO BusinessItem { get; set; }
public IndividualDTO IndividualItem { get; set; }
}
How can I map the output of the Item to BusinessItem or IndividualItem.
I know this one would not work. Mapper.CreateMap<Party, PartyDTO>();
I don't know if conditional mapping can solve this or a resolver like this one.
Hey maybe this will help you out! I tested it, but i am using AutoMapper just for two days!
Allright here are your noted classes!!!
public class Party
{
public string DMVID { get; set; }
public object Item { get; set; }
}
public class PartyDTO
{
public string DMVID { get; set; }
public BuisnessDTO BusinessItem { get; set; }
public IndividualDTO IndividualItem { get; set; }
}
public class BuisnessDTO
{
public int Number
{
get;
set;
}
}
public class IndividualDTO
{
public string Message
{
get;
set;
}
}
and here your is the MapperConfiguration for this current scenario!
// Edit There was no need here for some conditions
AutoMapper.Mapper.CreateMap<Party, PartyDTO>()
.ForMember(dto => dto.BusinessItem, map =>
map.MapFrom(party => party.Item as BuisnessDTO);
)
.ForMember(dto => dto.IndividualItem, map =>
map.MapFrom(party => party.Item as IndividualDTO);
);
// And this is another way to achive the mapping in this scenario
AutoMapper.Mapper.CreateMap<PartyDTO, Party>()
.ForMember(party => party.Item, map => map.MapFrom( dto => (dto.BusinessItem != null) ? (dto.BusinessItem as object) : (dto.IndividualItem as object)));
And i created this sample for it!
Party firstParty = new Party()
{
DMVID = "something",
Item = new BuisnessDTO()
{
Number = 1
}
};
Party secondParty = new Party()
{
DMVID = "something",
Item = new IndividualDTO()
{
Message = "message"
}
};
PartyDTO dtoWithBuisness = AutoMapper.Mapper.Map<PartyDTO>(firstParty);
PartyDTO dtoWithIndividual = AutoMapper.Mapper.Map < PartyDTO>(secondParty);
Party afterParty = AutoMapper.Mapper.Map<Party>(dtoWithBuisness);
afterParty = AutoMapper.Mapper.Map < Party>(dtoWithIndividual);
Of course there are other possibility, but I think thats exactly what you wanted.

Entity Framework - Update complex entities

I'm using EF5.0 (database first) and trying to Update "Company" entity which is a complex type, it contains "Address" entity as navigation property.
I receive a Company DTO object from UI and I map it, using AutoMapper, to Entity object and call objectContext.Save() for saving.
Problem am facing is, "Company" entity values are getting saved but not the "Address" entity. Below are the each object details-
public class CompanyDto
{
public int Id { get; set; }
public string Name { get; set; }
public AddressDto Address { get; set; }
}
with AddressDto as -
public class AddressDto : IDto
{
public int Id { get; set; }
public string Street { get; set; }
public string City { get; set; }
public string PostCode { get; set; }
}
Company Entity (generated by EF - database first)
public partial class tblCompany
{
public tblCompany()
{
this.tblAddresses = new HashSet<tblAddress>();
}
public int ID { get; set; }
public string CompanyName { get; set; }
public virtual ICollection<tblAddress> tblAddresses { get; set; } //navigation property
}
with Address entity is as follows -
public partial class tblAddress
{
public int ID { get; set; }
public int CaseID { get; set; }
public string AddressLine1 { get; set; }
public string AddressLine2 { get; set; }
public string City { get; set; }
public string County { get; set; }
public string PostCode { get; set; }
public virtual tblCase tblCase { get; set; }
}
AutoMapper mapping configuration for converting from DTO to entity
Mapper.CreateMap<CompanyDto, tblCase>()
.ForMember(x => x.ID, opt => opt.MapFrom(cd => cd.Id))
.ForMember(x => x.CompanyName, opt => opt.MapFrom(cd => cd.Name))
.AfterMap((s, d) => d.tblAddresses.Add(new tblAddress
{
AddressLine1 = s.Address.Street,
CaseID = s.Id,
City = s.Address.City,
PostCode = s.Address.PostCode
}));
public void Update(CompanyDto company)
{
//TO DO: check if AutoMapper could map address as well.
var companyDao = Mapper.Map<CompanyDto, tblCase>(company);
_companyRepository.Update(companyDao);
_unitOfWork.Save();
}
Thanks in advance
Sai

Complex collections with Automapper

Here is what I have where I hope someone can help us out:
class Source
{
string name { get; set; }
Inner { get; set; }
}
class Inner
{
Col A { get; set; }
Col B { get; set; }
}
class Col : IList<ClassX>, IEnunmerable<ClassX>
I need to map class Source to a destination type which has:
class Dest
{
string name { get; set; }
IList<ClassY> A { get; set;}
IList<ClassY> B { get; set;}
}
Now, ClassX and class ClassY share the same properties. ClassY class has a subset of the ClassX primitive properties with the exact same names and types.
Tried all kinds of mappings. Just the ClassX to ClassY map, with the collections, without and with any mapping get no mapping found between or missing configuration between Source and Dest
AutoMapper.Mapper.Map<Source, Dest>(src);
Can someone help me out with the mapping? Thanks in advance.
This question is a few months old, but if you're still looking for an answer, this is what I tried that worked:
class Source
{
public string Name { get; set; }
public Inner Inner { get; set; }
}
class Inner
{
public Col A { get; set; }
public Col B { get; set; }
}
class Col : List<ClassX> { }
class ClassX
{
public int Index { get; set; }
public string Name { get; set; }
public ClassX() : this(0, "") { }
public ClassX(int index, string name)
{
this.Index = index;
this.Name = name;
}
}
class ClassY
{
public int Index { get; set; }
public string Name { get; set; }
public ClassY() : this(0, "") { }
public ClassY(int index, string name)
{
this.Index = index;
this.Name = name;
}
}
class Dest
{
public string Name { get; set; }
public List<ClassY> A { get; set; }
public List<ClassY> B { get; set; }
}
[TestMethod]
public void ComplexTest()
{
Mapper.CreateMap<Source, Dest>()
.ForMember(dest => dest.A, config => config.MapFrom(src => src.Inner.A))
.ForMember(dest => dest.B, config => config.MapFrom(src => src.Inner.B));
Mapper.CreateMap<ClassX, ClassY>();
Source source = new Source
{
Name = "Source",
Inner = new Inner
{
A = new Col
{
new ClassX(1, "First"),
new ClassX(2, "Second"),
new ClassX(3, "Third"),
new ClassX(4, "Fourth"),
},
B = new Col
{
new ClassX(5, "Fifth"),
new ClassX(6, "Sixth"),
new ClassX(7, "Seventh"),
new ClassX(8, "Eighth"),
},
}
};
Dest destination = Mapper.Map<Source, Dest>(source);
Assert.AreEqual(source.Name, destination.Name);
Assert.AreEqual(source.Inner.A.Count, destination.A.Count);
Assert.AreEqual(source.Inner.B.Count, destination.B.Count);
Assert.AreEqual(source.Inner.A[0].Name, destination.A[0].Name);
Assert.AreEqual(source.Inner.B[0].Name, destination.B[0].Name);
}
I didn't go too in-depth with my Asserts, so there may be something I missed, but they appear to be mapped properly.

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