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Entity Framework creates a new record per foreign key in another table while seeding

I'm trying to seed a database using EF.
I have a table that holds products (phones) and a Category table that differentiates between different types of products.
public class Category
{
public int CategoryId { get; set; }
public string Name { get; set; }
public DateTimeOffset? CreationDate { get; set; }
public DateTimeOffset? UpdateDate { get; set; }
public virtual List<IProduct> Products{ get; set; }
public Category()
{
this.CreationDate = DateTimeOffset.UtcNow;
}
}
public interface IProduct
{
int ProductId { get; set; }
string Brand { get; set; }
string Model { get; set; }
decimal? Price { get; set; }
string Image { get; set; }
int CategoryId { get; set; }
Category Category { get; set; }
}
public class Phone: IProduct
{
public int ProductId { get; set; }
public int CategoryId { get; set; }
public Category Category { get; set; }
public string Brand { get; set; }
public string Model { get; set; }
public string network_technology { get; set; }
public string bands_2G { get;set; }
public string bands_3G{ get; set; }
public string bands_4G { get; set; }
public string network_speed { get; set; }
public string GPRS { get; set; }
public string EDGE { get; set; }
public string announced { get; set; }
public string status { get; set; }
public string dimentions { get; set; }
public float? weight_g { get; set; }
public float? weight_oz { get; set; }
public string SIM { get; set; }
public string display_type { get; set; }
public string display_resolution { get; set; }
public string display_size { get; set; }
public string OS { get; set; }
public string CPU { get; set; }
public string Chipset { get; set; }
public string GPU { get; set; }
public string memory_card { get; set; }
public string internal_memory { get; set; }
public string RAM { get; set; }
public string primary_camera { get; set; }
public string secondary_camera { get; set; }
public string loud_speaker { get; set; }
public string audio_jack { get; set; }
public string WLAN { get; set; }
public string bluetooth { get; set; }
public string GPS { get; set; }
public string NFC { get; set; }
public string radio { get; set; }
public string USB { get; set; }
public string sensors { get; set; }
public string battery { get; set; }
public string colors { get; set; }
public decimal? Price { get; set; }
public string Image { get; set; }
}
I don't know what am I doing wrong but after I update the database from nuget console, a new Category record is created per seeded product(phone). That's exactly the opposite of what I want. I want all the phones to have one categoryId that refers to Phones category. does anyone know what's wrong?
Entity Type Configurations (fluent api):
public class CategoryConfiguration : EntityTypeConfiguration<Category>
{
public CategoryConfiguration()
{
ToTable("Categories");
HasKey(m => m.CategoryId);
}
}
public class PhoneConfiguration : EntityTypeConfiguration<Phone>
{
public PhoneConfiguration()
{
ToTable("Phones");
HasKey(m => m.ProductId);
}
}
Seed method:
protected override void Seed(BestPhone.Data.BestPhoneDbContext context)
{
context.Categories.AddOrUpdate(new Category(){Name = "Phones", CategoryId = 1});
...
//getting records from a csv file and holding them in an array.
var records = csvReader.GetRecords<Phone>().ToArray();
foreach (var record in records)
{
record.CategoryId = 1;
}
context.Phones.AddRange(records);
context.SaveChanges();
}
}

Try to add the next method on your CategoryConfiguration class:
public void Configure(EntityTypeBuilder<Category> builder)
{
builder
.HasMany(s => s.Products)
.WithOne(t => t.Category)
.HasForeignKey(t => t.CategoryId);
}
I'm not sure but it seems a system does not take into account your foreign key during seeding.

NHibernate Left Join

A very beginner question:
I have two classes, Review and ReviewSentences:
public class Review
{
public virtual int recordId { get; set; }
public virtual string reviewerId { get; set; }
public virtual string reviewerName { get; set; }
public virtual string country { get; set; }
public virtual string zipCode { get; set; }
public virtual string reviewProduct { get; set; }
public virtual string reviewText { get; set; }
public virtual string reviewTextLanguage { get; set; }
public virtual double sentimentScore { get; set; }
public virtual bool isScoreRefined { get; set; }
}
pulic class ReviewSentences
{
public virtual int recordId { get; set; }
public virtual int reviewId { get; set; }
public virtual int sentenceId { get; set; }
public virtual string sentence { get; set; }
public virtual double sentimentScore { get; set; }
}
The property ReviewSentences.reviewId is a foreign key referring to Review.recordId. One review can have many sentences (Review:ReviewSentences is 1:Many)
I have been trying for a long time now but unable to replicate the following query in terms of NHibernate with session.CreateCriteria:
select * from Reviews r
left join
ReviewSentences rs
on
r.RecordId = rs.ReviewId
where rs.ReviewId is null
The query gives me all reviews from the Review table that do not have any records in the ReviewSentences table.

It is a matter of mapping you should include an array of ReviewSentences in your Review class and map it correctly.
public class Review
{
public virtual int recordId { get; set; }
public virtual string reviewerId { get; set; }
public virtual string reviewerName { get; set; }
public virtual string country { get; set; }
public virtual string zipCode { get; set; }
public virtual string reviewProduct { get; set; }
public virtual string reviewText { get; set; }
public virtual string reviewTextLanguage { get; set; }
public virtual double sentimentScore { get; set; }
public virtual bool isScoreRefined { get; set; }
public virtual IList<ReviewSentences> sentences { get; set; }
}
pulic class ReviewSentences
{
public virtual int recordId { get; set; }
public virtual int reviewId { get; set; }
public virtual int sentenceId { get; set; }
public virtual string sentence { get; set; }
public virtual double sentimentScore { get; set; }
}
then in the mapping you should refer sentences as a reference.
but you did not said which kind of mapping your using (Fluent, conformist, etc.)

Fixed the mapping in hbm.xml files and got the required results using:
var reviews= session.CreateCriteria<Review>("r")
.CreateCriteria("r.sentences", JoinType.LeftOuterJoin)
.Add(Restrictions.IsNull("recordId"))
.List<Review>();

How can change grouped List<MyClass> to list<MyAnotherClass> type?

Here is my codes;
public List<SbtKlasorViewModel> GetFoldersWithIndexedDocuments()
{
//TODO - I can't find right query. We need folders with documents but only documents which be Indexed
using (ISession session = DatabaseProvider.SessionFactory.OpenSession())
{
List<DokumanlarModel> dokumanList = session.QueryOver<DokumanlarModel>()
.Where(x => x.IndexlenmeTarihi != null)
.List().ToList();
var list = dokumanList.GroupBy(x => x.Klasor.Aciklama);
List<SbtKlasorModel> folders = list as List<SbtKlasorModel>;
////Transforming SbtKlasorModel to SbtKlasorViewModel for respose
List<SbtKlasorViewModel> transformedFolders = folders
.Select(x => ModelTransformer.TransformModel(x)).ToList();
return transformedFolders;
}
}
DokumanlarModel.cs:
public class DokumanlarModel : SModuleClass
{
public virtual int DokumanId { get; set; }
public virtual string DokumanAdi { get; set; }
public virtual int DosyaBoyutu { get; set; }
public virtual int Durum { get; set; }
public virtual string EskiPath { get; set; }
public virtual string IndexTahsisKullanici { get; set; }
public virtual DateTime? IndexlenmeTarihi { get; set; }
public virtual string IndexleyenKullanici { get; set; }
public virtual string KaliteKontrolKullanici { get; set; }
public virtual DateTime? KaliteKontrolTarihi { get; set; }
public virtual SbtKlasorModel Klasor { get; set; }
public virtual int KlasordekiSira { get; set; }
public virtual DokNitelikTipModel NitelikTipId { get; set; }
public virtual int OcrDurum { get; set; }
public virtual string Path { get; set; }
public virtual int SayfaSayisi { get; set; }
public virtual DateTime? TaranmaTarihi { get; set; }
public virtual string TarayanKullanici { get; set; }
public virtual int Versiyon { get; set; }
public virtual string OrjinalPath { get; set; }
public virtual IList<LogDokumanModel> LogDokumanList { get; set; }
public virtual IList<DokumanlarOcrModel> DokumanlarOcrList { get; set; }
public virtual IList<DokVersiyonModel> DokVersiyonList { get; set; }
public virtual IList<DokMetaDataArsivModel> DokMetaDataArsivList { get; set; }
public DokumanlarModel()
{
LogDokumanList = new List<LogDokumanModel>();
DokumanlarOcrList = new List<DokumanlarOcrModel>();
DokVersiyonList = new List<DokVersiyonModel>();
DokMetaDataArsivList = new List<DokMetaDataArsivModel>();
}
}
SbtKlasorModel.cs:
public class SbtKlasorModel : SModuleClass
{
public virtual int KlasorId { get; set; }
public virtual string Aciklama { get; set; }
public virtual string Ada { get; set; }
public virtual string KisiAdSoyad { get; set; }
public virtual string Mahalle { get; set; }
public virtual string Parsel { get; set; }
public virtual string SerhAciklama { get; set; }
public virtual DateTime SerhBaslangicTarihi { get; set; }
public virtual DateTime SerhBitisTarihi { get; set; }
public virtual SbtKullaniciModel SerhKullanici { get; set; }
public virtual string Pafta { get; set; }
public virtual string KlasorNo { get; set; }
public virtual string SiraNo { get; set; }
public virtual string AciklamaYeni { get; set; }
public virtual IList<IlskGrupKlasorModel> IlskGrupKlasorList { get; set; }
public virtual IList<DokumanlarModel> DokumanlarList { get; set; }
public virtual IList<DokTaleplerModel> DokTaleplerList { get; set; }
public SbtKlasorModel()
{
IlskGrupKlasorList = new List<IlskGrupKlasorModel>();
DokumanlarList = new List<DokumanlarModel>();
DokTaleplerList = new List<DokTaleplerModel>();
}
}
I got data like List from database. And grouped by "DokumanlarModel.Klasor.Aciklama". But I need List list. I tried like above. It returns null. What should i do for this type change?

public List<SbtKlasorViewModel> GetFoldersWithIndexedDocuments()
{
using (var session = DatabaseProvider.SessionFactory.OpenSession())
{
var foldersContainingIndexedDocs = session.QueryOver<SbtKlasorModel>()
.JoinQueryOver<DokumanlarModel>(x => x.DokumanlarList)
.Where(doc => doc.IndexlenmeTarihi != null)
.List();
//Transforming SbtKlasorModel to SbtKlasorViewModel for respose
return folders.Select(ModelTransformer.TransformModel).ToList();
}
}

multiple navigation properties to the same table using code first

I have a one-to-many relationship setup. IT is working fine but now I am trying to use pdfsharp and I need some help with the navigation properties. Every Measurement has 4 pictures. Front, Back, Right, Left. I need to include all 4 pics in the pdf. I am unable to reach them with what i have now. I can return the list of pictures per measurement in a table. Just dont know how to change it for this to work as well.
public class Measurement
{
[Key]
[DatabaseGeneratedAttribute(DatabaseGeneratedOption.None)]
public Guid Id { get; set; }
public DateTime? MeasurementDate { get; set; }
public decimal? BustMeasurement { get; set; }
public decimal? ChestMeasurement { get; set; }
public decimal? FAT { get; set; }
public string MeasurementUploadBy { get; set; }
public DateTime? MeasurementUploadDate { get; set; }
public DateTime? MeasurementEditDate { get; set; }
public string MeasurementEditBy { get; set; }
public int? ClientId { get; set; }
[ForeignKey("ClientId")]
public virtual Client Client { get; set; }
public virtual ICollection<Picture> Pictures { get; set; }
}
public class Picture
{
public int Id { get; set; }
public string PictureFrontUrl { get; set; }
public string PictureBackUrl { get; set; }
public string PictureRightSideUrl { get; set; }
public string PictureLeftSideUrl { get; set; }
public string PictureNote { get; set; }
public string PictureUploadBy { get; set; }
public DateTime? PictureUploadDate { get; set; }
public DateTime? PictureDate { get; set; }
public string ClientName { get; set; }
public string PictureType { get; set; }
public Guid MeasurementId { get; set; }
[ForeignKey("MeasurementId")]
public virtual Measurement Measurement { get; set; }
}
MeasurementApi
public Measurement GetMeasurement(Guid id)
{
using (var context = new ApplicationDbContext())
{
Measurement model = new Measurement();
model = context.Measurements
.Include(x => x.Pictures)
.FirstOrDefault(j => j.Id == id);
return model;
}
}
PDFSharp GEt Call
apiMeasurementController adapter = new apiMeasurementController();
Measurement model = new Measurement();
model = adapter.GetMeasurement(id);

If you want your Measurement to have 4 pictures, and not a colleciton of pictures you should have something like this:
public class Measurement
{
[Key]
[DatabaseGeneratedAttribute(DatabaseGeneratedOption.None)]
public Guid Id { get; set; }
....
// Won't need these
// public virtual ICollection<Picture> Pictures { get; set; }
public virtual Picture LeftPicture { get; set; }
public virtual Picture TopPicture { get; set; }
public virtual Picture RightPicture { get; set; }
public virtual Picture BottomPicture { get; set; }
}
And your picture:
public class Picture
{
public int Id { get; set; }
// Don't need these 4 any more.
// public string PictureFrontUrl { get; set; }
// public string PictureBackUrl { get; set; }
// public string PictureRightSideUrl { get; set; }
// public string PictureLeftSideUrl { get; set; }
public string PictureUrl { get; set; }
public string PictureNote { get; set; }
public string PictureUploadBy { get; set; }
public DateTime? PictureUploadDate { get; set; }
public DateTime? PictureDate { get; set; }
public string ClientName { get; set; }
public string PictureType { get; set; }
public Guid MeasurementId { get; set; }
[ForeignKey("MeasurementId")]
public virtual Measurement Measurement { get; set; }
}
And in your API
public Measurement GetMeasurement(Guid id)
{
using (var context = new ApplicationDbContext())
{
Measurement model = new Measurement();
model = context.Measurements
.Include(x => x.LeftPicture)
.Include(x => x.TopPicture)
.Include(x => x.RightPicture)
.Include(x => x.BottomPicture)
.FirstOrDefault(j => j.Id == id);
return model;
}
}

Linq where with nested .Any() in string variable

These are my entities:
public class Subscription : BaseItem
{
public virtual DateTime DateStart { get; set; }
public virtual DateTime? DateEnd { get; set; }
public virtual int Status { get; set; }
public virtual Account Account { get; set; }
public virtual Theater Theater { get; set; }
public virtual Agent Agent { get; set; }
}
public class Account : BaseItem
{
public virtual string LegalName { get; set; }
public virtual string FirstName { get; set; }
public virtual string UrlName { get; set; }
public virtual string Address1 { get; set; }
public virtual string Address2 { get; set; }
public virtual string City { get; set; }
public virtual string State { get; set; }
public virtual string ZipCode { get; set; }
public virtual string Country { get; set; }
public virtual string Tel { get; set; }
public virtual string Tel2 { get; set; }
public virtual string Fax { get; set; }
public virtual string Mobile { get; set; }
public virtual string Email { get; set; }
public virtual string Website { get; set; }
public virtual int DefaultVatRate { get; set; }
public virtual bool Bankrupt { get; set; }
public virtual string ExternalId { get; set; }
public virtual bool DoNotContact { get; set; }
public virtual bool NotInterested { get; set; }
public virtual Group Group { get; set; }
public virtual IList<Header> Headers { get; set; }
public virtual IList<Note> Notes { get; set; }
public virtual IList<Order> Orders { get; set; }
public virtual IList<Subscription> Subscriptions { get; set; }
}
public class Order : BaseItem
{
public virtual int Number { get; set; }
public virtual DateTime Date { get; set; }
public virtual string Description { get; set; }
public virtual double Amount { get; set; }
public virtual string Attachment { get; set; }
public virtual string AttachmentFilename { get; set; }
public virtual string AttachmentMimetype { get; set; }
public virtual bool? PaidToTheater { get; set; }
public virtual DateTime? DatePaidToTheater { get; set; }
public virtual bool? CashinByTheater { get; set; }
public virtual Account Account { get; set; }
public virtual Theater Theater { get; set; }
public virtual Agent Agent { get; set; }
public virtual IList<Invoice> Invoices { get; set; }
public virtual IList<OrdersAttachment> OrdersAttachments { get; set; }
public virtual IList<OrdersDueDate> OrdersDueDates { get; set; }
public virtual Header Header { get; set; }
}
public class Invoice : BaseItem
{
public virtual int Number { get; set; }
public virtual DateTime Date { get; set; }
public virtual double Amount { get; set; }
public virtual double VatRate { get; set; }
public virtual bool IsDisabled { get; set; }
public virtual bool IsSendMail { get; set; }
public virtual Order Order { get; set; }
public virtual IList<InvoicesDueDate> InvoicesDueDates { get; set; }
public virtual IList<InvoicesPayment> InvoicesPayments { get; set; }
}
I have a method in my program that build a "query" in a string variable.
private string GenerateQuery(FilterSubscription filterSubscription)
{
if (filterSubscription.FilterByOrder)
return "Account.Orders.Any()";
if (filterSubscription.FilterByInvoice)
return "Account.Orders.Any(Invoices.Any())"; //here is my problem
}
This is the call to the method
string query = GenerateQuery(filterSubscription)
var count = Session.Linq<Subscription>().Where(query).Count();
If I need to extract all accounts that have at least one Order is all OK.
But if I need to extract all accounts that have at least one Invoice I don't know how.
If I wrote
var count = Session.Linq<Subscription>().Where(s=>s.Account.Orders.Any(o=>o.Invoices.Any())).Count();
it works but if I use the string variable it doesn't.

It looks like you should return a delegate from GenerateQuery instead - something like:
private Expression<Func<Subscription, bool>> GenerateQuery(FilterSubscription filterSubscription)
{
if (filterSubscription.FilterByOrder)
return s => s.Account.Orders.Any();
if (filterSubscription.FilterByInvoice)
return s => s.Account.Orders.Any(o => o.Invoices.Any());
}
Then just update the query variable to be implicitly typed:
var query = GenerateQuery(filterSubscription);