[英]Entity Framework Inheritance - Resolve Relations between entities with same parent
Here is my model 这是我的模特
I need to map this model to Entity Framework, but my results are building only one table named Fluxo, and there are lots of ugly FKs. 我需要将此模型映射到Entity Framework,但是我的结果是仅构建一个名为Fluxo的表,并且有很多丑陋的FK。
Besides, I don't know how can I map my PK, defined at Fluxo class 此外,我不知道如何映射在Fluxo类中定义的PK
Here is my mappings 这是我的映射
public class FluxoPrincipalMap : EntityTypeConfiguration<FluxoPrincipal>
{
public FluxoPrincipalMap()
{
HasRequired(f => f.CasoDeUso).WithOptional(c => c.FluxoPrincipal);
}
}
public class FluxoAlternativoMap : EntityTypeConfiguration<FluxoAlternativo>
{
public FluxoAlternativoMap()
{
}
}
class FluxoDeExcecaoMap : EntityTypeConfiguration<FluxoDeExcecao>
{
public FluxoDeExcecaoMap()
{
}
}
UPDATE 1 - After Some Mapping Improvement 更新1-经过一些映射改进
Ok, here is my new mappings 好的,这是我的新映射
public class FluxoPrincipalMap : EntityTypeConfiguration<FluxoPrincipal>
{
public FluxoPrincipalMap()
{
ToTable(nameof(FluxoPrincipal));
HasKey(x => x.FluxoId);
Property(x => x.FluxoId).HasDatabaseGeneratedOption(DatabaseGeneratedOption.Identity);
HasRequired(f => f.CasoDeUso).WithOptional(c => c.FluxoPrincipal);
Ignore(f => f.ValidationResult);
Ignore(f => f.IsValid);
}
}
public class FluxoAlternativoMap : EntityTypeConfiguration<FluxoAlternativo>
{
public FluxoAlternativoMap()
{
ToTable(nameof(FluxoAlternativo));
HasKey(x => x.FluxoId);
Property(x => x.FluxoId).HasDatabaseGeneratedOption(DatabaseGeneratedOption.Identity);
HasRequired(x => x.FluxoPrincipal)
.WithMany(x => x.FluxosAlternativos)
.HasForeignKey(x => x.FluxoPrincipalId);
Ignore(x => x.ValidationResult);
Ignore(x => x.IsValid);
}
}
class FluxoDeExcecaoMap : EntityTypeConfiguration<FluxoDeExcecao>
{
public FluxoDeExcecaoMap()
{
ToTable(nameof(FluxoDeExcecao));
HasKey(x => x.FluxoId);
Property(x => x.FluxoId).HasDatabaseGeneratedOption(DatabaseGeneratedOption.Identity);
HasRequired(x => x.FluxoPrincipal)
.WithMany(x => x.FluxosDeExcecao)
.HasForeignKey(x => x.FluxoPrincipalId);
Ignore(x => x.ValidationResult);
Ignore(x => x.IsValid);
}
}
And here is my context config 这是我的上下文配置
protected override void OnModelCreating(DbModelBuilder modelBuilder)
{
modelBuilder.Conventions.Remove<PluralizingTableNameConvention>();
modelBuilder.Conventions.Remove<OneToManyCascadeDeleteConvention>();
modelBuilder.Conventions.Remove<ManyToManyCascadeDeleteConvention>();
modelBuilder.Properties()
// ReSharper disable once PossibleNullReferenceException
.Where(p => p.Name == p.ReflectedType.Name + "Id")
.Configure(p => p.IsKey());
modelBuilder.Properties<string>()
.Configure(p => p.HasColumnType("varchar"));
modelBuilder.Properties<string>()
.Configure(p => p.HasMaxLength(100));
modelBuilder.Configurations.Add(new ProjetoMap());
modelBuilder.Configurations.Add(new RequisitoMap());
modelBuilder.Configurations.Add(new CasoDeUsoMap());
modelBuilder.Configurations.Add(new FluxoPrincipalMap());
modelBuilder.Configurations.Add(new FluxoAlternativoMap());
modelBuilder.Configurations.Add(new FluxoDeExcecaoMap());
base.OnModelCreating(modelBuilder);
}
There are 3 ways to work with inheritance in Entity Framework, you can see all of them here: http://weblogs.asp.net/manavi/inheritance-mapping-strategies-with-entity-framework-code-first-ctp5-part-1-table-per-hierarchy-tph 在实体框架中有3种处理继承的方法,您可以在此处查看所有这些方法: http : //weblogs.asp.net/manavi/inheritance-mapping-strategies-with-entity-framework-code-first-ctp5-第1部分,每个层次结构表
public class Context : DbContext
{
public DbSet<Fluxo> Fluxo { get; set; }
protected override void OnModelCreating(DbModelBuilder modelBuilder)
{
modelBuilder.Configurations.AddFromAssembly(Assembly.GetExecutingAssembly());
}
}
public class FluxoPrincipalMap : EntityTypeConfiguration<FluxoPrincipal>
{
public FluxoPrincipalMap()
{
HasKey(x => x.FluxoID);
}
}
public class FluxoAlternativoMap : EntityTypeConfiguration<FluxoAlternativo>
{
public FluxoAlternativoMap()
{
HasKey(x => x.FluxoID);
}
}
class FluxoDeExcecaoMap : EntityTypeConfiguration<FluxoDeExcecao>
{
public FluxoDeExcecaoMap()
{
HasKey(x => x.FluxoID);
}
}
public class Context : DbContext
{
public DbSet<FluxoPrincipal> FluxoPrincipal { get; set; }
public DbSet<FluxoAlternativo> FluxoAlternativo { get; set; }
public DbSet<FluxoDeExcecao> FluxoDeExcecao { get; set; }
protected override void OnModelCreating(DbModelBuilder modelBuilder)
{
modelBuilder.Configurations.AddFromAssembly(Assembly.GetExecutingAssembly());
}
}
public class FluxoPrincipalMap : EntityTypeConfiguration<FluxoPrincipal>
{
public FluxoPrincipalMap()
{
HasKey(x => x.FluxoID);
}
}
public class FluxoAlternativoMap : EntityTypeConfiguration<FluxoAlternativo>
{
public FluxoAlternativoMap()
{
HasKey(x => x.FluxoID);
}
}
class FluxoDeExcecaoMap : EntityTypeConfiguration<FluxoDeExcecao>
{
public FluxoDeExcecaoMap()
{
HasKey(x => x.FluxoID);
}
}
public class Context : DbContext
{
public DbSet<FluxoPrincipal> FluxoPrincipal { get; set; }
public DbSet<FluxoAlternativo> FluxoAlternativo { get; set; }
public DbSet<FluxoDeExcecao> FluxoDeExcecao { get; set; }
protected override void OnModelCreating(DbModelBuilder modelBuilder)
{
modelBuilder.Configurations.AddFromAssembly(Assembly.GetExecutingAssembly());
}
}
public class FluxoPrincipalMap : EntityTypeConfiguration<FluxoPrincipal>
{
public FluxoPrincipalMap()
{
HasKey(x => x.FluxoID);
Map(x => x.MapInheritedProperties());
}
}
public class FluxoAlternativoMap : EntityTypeConfiguration<FluxoAlternativo>
{
public FluxoAlternativoMap()
{
HasKey(x => x.FluxoID);
Map(x => x.MapInheritedProperties());
}
}
class FluxoDeExcecaoMap : EntityTypeConfiguration<FluxoDeExcecao>
{
public FluxoDeExcecaoMap()
{
HasKey(x => x.FluxoID);
Map(x => x.MapInheritedProperties());
}
}
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