Отображение записи C# 9 как объекта значения с помощью EntityFrameworkCore 5
Я пытаюсь использовать
record типы как объекты значений в классе C#, но когда я пытаюсь сопоставить эти типы с помощью efcore 5, он выдает исключение.
Мои занятия:
public record ZipCode
{
private static readonly char ZIPCODE_SEPARATOR = '-';
private static readonly string INVALID_ZIPCODE_MESSAGE = "invalid zip code";
private static readonly string ZIPCODE_WITH_NOT_ONLY_NUMBERS = "Invalid zip code value, must have only digits";
private char[] _value;
public string Value => new string(_value);
public ZipCode(string zipCode)
{
_value = new char[8];
setZipCodeValue(zipCode);
}
public ZipCode(ZipCode zipCode)
{
this._value = zipCode.Value.ToCharArray();
}
private void setZipCodeValue(string valueAsString)
{
if (valueAsString.Length < 8 || valueAsString.Length > 9)
{
throw new InvalidOperationException(INVALID_ZIPCODE_MESSAGE);
}
var zipCodeAsCharArray = valueAsString.ToCharArray();
int valueArrayIndex = (int) decimal.Zero;
foreach (var ch in zipCodeAsCharArray)
{
if (char.IsDigit(ch) )
{
_value[valueArrayIndex] = ch;
valueArrayIndex++;
}
else if (ch.Equals(ZIPCODE_SEPARATOR))
{
continue;
}
else
{
throw new InvalidOperationException(ZIPCODE_WITH_NOT_ONLY_NUMBERS);
}
}
}
}
Главный объект:
public class DeliveryServicePriceTime
{
public Guid Id { get; private set; }
public ZipCode SourceZipCode { get; private set; }
public ZipCode DestinationZipCode { get; private set; }
public DateTime RequestDateTime { get; private set; }
private IList<ServicePriceTime> _servicesPriceTime;
public IReadOnlyList<ServicePriceTime> ServicesPriceTimes => _servicesPriceTime.ToList();
private DeliveryServicePriceTime()
{
Id = Guid.NewGuid();
}
public DeliveryServicePriceTime(ZipCode sourceZipCode, ZipCode destinationZipCode, IList<ServicePriceTime> servicesPriceTime) : this()
{
SourceZipCode = sourceZipCode;
DestinationZipCode = destinationZipCode;
_servicesPriceTime = servicesPriceTime;
}
public DeliveryServicePriceTime(string sourceZipCode, string destinationZipCode, IList<ServicePriceTime> servicesPriceTime) : this()
{
RequestDateTime = DateTime.UtcNow;
this.SourceZipCode = new ZipCode(sourceZipCode);
this.DestinationZipCode = new ZipCode(destinationZipCode);
_servicesPriceTime = servicesPriceTime;
}
}
у меня есть другой
record который следующий код:
public record ServicePriceTime(DeliveryService DeliveryService, decimal Price, int Time);
Я использую свободный API для сопоставления свойств со структурой таблицы с помощью следующего кода:
public class DeliveryServicePriceTimeMappingConfiguration : IEntityTypeConfiguration<DeliveryServicePriceTime>
{
public void Configure(EntityTypeBuilder<DeliveryServicePriceTime> builder)
{
builder.ToTable("DeliveryCalcEvent");
builder.HasKey(e => e.Id);
builder.Property(e => e.RequestDateTime).IsRequired();
builder.OwnsOne(e => e.SourceZipCode)
.Property(e => e.Value)
.UsePropertyAccessMode(PropertyAccessMode.PreferFieldDuringConstruction)
.IsRequired();
builder.OwnsOne(e => e.DestinationZipCode)
.Property(e => e.Value)
.UsePropertyAccessMode(PropertyAccessMode.PreferFieldDuringConstruction)
.IsRequired();
builder.OwnsMany(e => e.ServicesPriceTimes, ac =>
{
ac.OwnsOne(m => m.DeliveryService, pc =>
{
pc.Property(p => p.ServiceCode).IsRequired();
pc.Property(p => p.ServiceName).IsRequired();
}).UsePropertyAccessMode(PropertyAccessMode.PreferFieldDuringConstruction);
ac.Property(m => m.Price).IsRequired();
ac.Property(m => m.Time).IsRequired();
}).UsePropertyAccessMode(PropertyAccessMode.PreferFieldDuringConstruction);
}
}
Я использую этот метод для обеспечения создания базы данных в классе запуска, но когда я пытаюсь запустить приложение, структура сущности не может понять мой объект записи.
это моя трассировка стека:
Microsoft.AspNetCore.Hosting.Diagnostics[6]
Application startup exception
System.InvalidOperationException: No suitable constructor was found for entity type 'DeliveryServicePriceTime.DestinationZipCode#ZipCode'. The following constructors had parameters that could not be bound to properties of the entity type: cannot bind 'zipCode' in 'DeliveryServicePriceTime.DestinationZipCode#ZipCode(string zipCode)'; cannot bind 'zipCode' in 'DeliveryServicePriceTime.DestinationZipCode#ZipCode(ZipCode zipCode)'.
at Microsoft.EntityFrameworkCore.Metadata.Conventions.ConstructorBindingConvention.ProcessModelFinalizing(IConventionModelBuilder modelBuilder, IConventionContext`1 context)
at Microsoft.EntityFrameworkCore.Metadata.Conventions.Internal.ConventionDispatcher.ImmediateConventionScope.OnModelFinalizing(IConventionModelBuilder modelBuilder)
at Microsoft.EntityFrameworkCore.Metadata.Conventions.Internal.ConventionDispatcher.OnModelFinalizing(IConventionModelBuilder modelBuilder)
at Microsoft.EntityFrameworkCore.Metadata.Internal.Model.FinalizeModel()
at Microsoft.EntityFrameworkCore.ModelBuilder.FinalizeModel()
at Microsoft.EntityFrameworkCore.Infrastructure.ModelSource.CreateModel(DbContext context, IConventionSetBuilder conventionSetBuilder, ModelDependencies modelDependencies)
at Microsoft.EntityFrameworkCore.Infrastructure.ModelSource.GetModel(DbContext context, IConventionSetBuilder conventionSetBuilder, ModelDependencies modelDependencies)
at Microsoft.EntityFrameworkCore.Internal.DbContextServices.CreateModel()
at Microsoft.EntityFrameworkCore.Internal.DbContextServices.get_Model()
at Microsoft.EntityFrameworkCore.Infrastructure.EntityFrameworkServicesBuilder.<>c.<TryAddCoreServices>b__7_3(IServiceProvider p)
at Microsoft.Extensions.DependencyInjection.ServiceLookup.CallSiteRuntimeResolver.VisitFactory(FactoryCallSite factoryCallSite, RuntimeResolverContext context)
at Microsoft.Extensions.DependencyInjection.ServiceLookup.CallSiteVisitor`2.VisitCallSiteMain(ServiceCallSite callSite, TArgument argument)
at Microsoft.Extensions.DependencyInjection.ServiceLookup.CallSiteRuntimeResolver.VisitCache(ServiceCallSite callSite, RuntimeResolverContext context, ServiceProviderEngineScope serviceProviderEngine, RuntimeResolverLock lockType)
at Microsoft.Extensions.DependencyInjection.ServiceLookup.CallSiteRuntimeResolver.VisitScopeCache(ServiceCallSite singletonCallSite, RuntimeResolverContext context)
at Microsoft.Extensions.DependencyInjection.ServiceLookup.CallSiteVisitor`2.VisitCallSite(ServiceCallSite callSite, TArgument argument)
at Microsoft.Extensions.DependencyInjection.ServiceLookup.CallSiteRuntimeResolver.VisitConstructor(ConstructorCallSite constructorCallSite, RuntimeResolverContext context)
at Microsoft.Extensions.DependencyInjection.ServiceLookup.CallSiteVisitor`2.VisitCallSiteMain(ServiceCallSite callSite, TArgument argument)
at Microsoft.Extensions.DependencyInjection.ServiceLookup.CallSiteRuntimeResolver.VisitCache(ServiceCallSite callSite, RuntimeResolverContext context, ServiceProviderEngineScope serviceProviderEngine, RuntimeResolverLock lockType)
at Microsoft.Extensions.DependencyInjection.ServiceLookup.CallSiteRuntimeResolver.VisitScopeCache(ServiceCallSite singletonCallSite, RuntimeResolverContext context)
at Microsoft.Extensions.DependencyInjection.ServiceLookup.CallSiteVisitor`2.VisitCallSite(ServiceCallSite callSite, TArgument argument)
at Microsoft.Extensions.DependencyInjection.ServiceLookup.CallSiteRuntimeResolver.Resolve(ServiceCallSite callSite, ServiceProviderEngineScope scope)
at Microsoft.Extensions.DependencyInjection.ServiceLookup.DynamicServiceProviderEngine.<>c__DisplayClass1_0.<RealizeService>b__0(ServiceProviderEngineScope scope)
at Microsoft.Extensions.DependencyInjection.ServiceLookup.ServiceProviderEngine.GetService(Type serviceType, ServiceProviderEngineScope serviceProviderEngineScope)
at Microsoft.Extensions.DependencyInjection.ServiceLookup.ServiceProviderEngineScope.GetService(Type serviceType)
at Microsoft.Extensions.DependencyInjection.ServiceProviderServiceExtensions.GetRequiredService(IServiceProvider provider, Type serviceType)
at Microsoft.Extensions.DependencyInjection.ServiceProviderServiceExtensions.GetRequiredService[T](IServiceProvider provider)
at Microsoft.EntityFrameworkCore.DbContext.get_DbContextDependencies()
at Microsoft.EntityFrameworkCore.DbContext.get_InternalServiceProvider()
at Microsoft.EntityFrameworkCore.DbContext.Microsoft.EntityFrameworkCore.Infrastructure.IInfrastructure<System.IServiceProvider>.get_Instance()
at Microsoft.EntityFrameworkCore.Infrastructure.DatabaseFacade.Microsoft.EntityFrameworkCore.Infrastructure.IInfrastructure<System.IServiceProvider>.get_Instance()
at Microsoft.EntityFrameworkCore.RelationalDatabaseFacadeExtensions.GetRelationalService[TService](IInfrastructure`1 databaseFacade)
at Microsoft.EntityFrameworkCore.RelationalDatabaseFacadeExtensions.Migrate(DatabaseFacade databaseFacade)
at API.Startup.Configure(IApplicationBuilder app, IWebHostEnvironment env, IServiceProvider serviceProvider) in /API/Startup.cs:line 52
at System.RuntimeMethodHandle.InvokeMethod(Object target, Object[] arguments, Signature sig, Boolean constructor, Boolean wrapExceptions)
at System.Reflection.RuntimeMethodInfo.Invoke(Object obj, BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture)
at Microsoft.AspNetCore.Hosting.ConfigureBuilder.Invoke(Object instance, IApplicationBuilder builder)
at Microsoft.AspNetCore.Hosting.ConfigureBuilder.<>c__DisplayClass4_0.<Build>b__0(IApplicationBuilder builder)
at Microsoft.AspNetCore.Hosting.GenericWebHostBuilder.<>c__DisplayClass15_0.<UseStartup>b__1(IApplicationBuilder app)
at Microsoft.AspNetCore.Mvc.Filters.MiddlewareFilterBuilderStartupFilter.<>c__DisplayClass0_0.<Configure>g__MiddlewareFilterBuilder|0(IApplicationBuilder builder)
at Microsoft.AspNetCore.HostFilteringStartupFilter.<>c__DisplayClass0_0.<Configure>b__0(IApplicationBuilder app)
at Microsoft.AspNetCore.Hosting.GenericWebHostService.StartAsync(CancellationToken cancellationToken)
Unhandled exception. System.InvalidOperationException: No suitable constructor was found for entity type 'DeliveryServicePriceTime.DestinationZipCode#ZipCode'. The following constructors had parameters that could not be bound to properties of the entity type: cannot bind 'zipCode' in 'DeliveryServicePriceTime.DestinationZipCode#ZipCode(string zipCode)'; cannot bind 'zipCode' in 'DeliveryServicePriceTime.DestinationZipCode#ZipCode(ZipCode zipCode)'.
at Microsoft.EntityFrameworkCore.Metadata.Conventions.ConstructorBindingConvention.ProcessModelFinalizing(IConventionModelBuilder modelBuilder, IConventionContext`1 context)
at Microsoft.EntityFrameworkCore.Metadata.Conventions.Internal.ConventionDispatcher.ImmediateConventionScope.OnModelFinalizing(IConventionModelBuilder modelBuilder)
at Microsoft.EntityFrameworkCore.Metadata.Conventions.Internal.ConventionDispatcher.OnModelFinalizing(IConventionModelBuilder modelBuilder)
at Microsoft.EntityFrameworkCore.Metadata.Internal.Model.FinalizeModel()
at Microsoft.EntityFrameworkCore.ModelBuilder.FinalizeModel()
at Microsoft.EntityFrameworkCore.Infrastructure.ModelSource.CreateModel(DbContext context, IConventionSetBuilder conventionSetBuilder, ModelDependencies modelDependencies)
at Microsoft.EntityFrameworkCore.Infrastructure.ModelSource.GetModel(DbContext context, IConventionSetBuilder conventionSetBuilder, ModelDependencies modelDependencies)
at Microsoft.EntityFrameworkCore.Internal.DbContextServices.CreateModel()
at Microsoft.EntityFrameworkCore.Internal.DbContextServices.get_Model()
at Microsoft.EntityFrameworkCore.Infrastructure.EntityFrameworkServicesBuilder.<>c.<TryAddCoreServices>b__7_3(IServiceProvider p)
at Microsoft.Extensions.DependencyInjection.ServiceLookup.CallSiteRuntimeResolver.VisitFactory(FactoryCallSite factoryCallSite, RuntimeResolverContext context)
at Microsoft.Extensions.DependencyInjection.ServiceLookup.CallSiteVisitor`2.VisitCallSiteMain(ServiceCallSite callSite, TArgument argument)
at Microsoft.Extensions.DependencyInjection.ServiceLookup.CallSiteRuntimeResolver.VisitCache(ServiceCallSite callSite, RuntimeResolverContext context, ServiceProviderEngineScope serviceProviderEngine, RuntimeResolverLock lockType)
at Microsoft.Extensions.DependencyInjection.ServiceLookup.CallSiteRuntimeResolver.VisitScopeCache(ServiceCallSite singletonCallSite, RuntimeResolverContext context)
at Microsoft.Extensions.DependencyInjection.ServiceLookup.CallSiteVisitor`2.VisitCallSite(ServiceCallSite callSite, TArgument argument)
at Microsoft.Extensions.DependencyInjection.ServiceLookup.CallSiteRuntimeResolver.VisitConstructor(ConstructorCallSite constructorCallSite, RuntimeResolverContext context)
at Microsoft.Extensions.DependencyInjection.ServiceLookup.CallSiteVisitor`2.VisitCallSiteMain(ServiceCallSite callSite, TArgument argument)
at Microsoft.Extensions.DependencyInjection.ServiceLookup.CallSiteRuntimeResolver.VisitCache(ServiceCallSite callSite, RuntimeResolverContext context, ServiceProviderEngineScope serviceProviderEngine, RuntimeResolverLock lockType)
at Microsoft.Extensions.DependencyInjection.ServiceLookup.CallSiteRuntimeResolver.VisitScopeCache(ServiceCallSite singletonCallSite, RuntimeResolverContext context)
at Microsoft.Extensions.DependencyInjection.ServiceLookup.CallSiteVisitor`2.VisitCallSite(ServiceCallSite callSite, TArgument argument)
at Microsoft.Extensions.DependencyInjection.ServiceLookup.CallSiteRuntimeResolver.Resolve(ServiceCallSite callSite, ServiceProviderEngineScope scope)
at Microsoft.Extensions.DependencyInjection.ServiceLookup.DynamicServiceProviderEngine.<>c__DisplayClass1_0.<RealizeService>b__0(ServiceProviderEngineScope scope)
at Microsoft.Extensions.DependencyInjection.ServiceLookup.ServiceProviderEngine.GetService(Type serviceType, ServiceProviderEngineScope serviceProviderEngineScope)
at Microsoft.Extensions.DependencyInjection.ServiceLookup.ServiceProviderEngineScope.GetService(Type serviceType)
at Microsoft.Extensions.DependencyInjection.ServiceProviderServiceExtensions.GetRequiredService(IServiceProvider provider, Type serviceType)
at Microsoft.Extensions.DependencyInjection.ServiceProviderServiceExtensions.GetRequiredService[T](IServiceProvider provider)
at Microsoft.EntityFrameworkCore.DbContext.get_DbContextDependencies()
at Microsoft.EntityFrameworkCore.DbContext.get_InternalServiceProvider()
at Microsoft.EntityFrameworkCore.DbContext.Microsoft.EntityFrameworkCore.Infrastructure.IInfrastructure<System.IServiceProvider>.get_Instance()
at Microsoft.EntityFrameworkCore.Infrastructure.DatabaseFacade.Microsoft.EntityFrameworkCore.Infrastructure.IInfrastructure<System.IServiceProvider>.get_Instance()
at Microsoft.EntityFrameworkCore.RelationalDatabaseFacadeExtensions.GetRelationalService[TService](IInfrastructure`1 databaseFacade)
at Microsoft.EntityFrameworkCore.RelationalDatabaseFacadeExtensions.Migrate(DatabaseFacade databaseFacade)
at API.Startup.Configure(IApplicationBuilder app, IWebHostEnvironment env, IServiceProvider serviceProvider) in /API/Startup.cs:line 52
at System.RuntimeMethodHandle.InvokeMethod(Object target, Object[] arguments, Signature sig, Boolean constructor, Boolean wrapExceptions)
at System.Reflection.RuntimeMethodInfo.Invoke(Object obj, BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture)
at Microsoft.AspNetCore.Hosting.ConfigureBuilder.Invoke(Object instance, IApplicationBuilder builder)
at Microsoft.AspNetCore.Hosting.ConfigureBuilder.<>c__DisplayClass4_0.<Build>b__0(IApplicationBuilder builder)
at Microsoft.AspNetCore.Hosting.GenericWebHostBuilder.<>c__DisplayClass15_0.<UseStartup>b__1(IApplicationBuilder app)
at Microsoft.AspNetCore.Mvc.Filters.MiddlewareFilterBuilderStartupFilter.<>c__DisplayClass0_0.<Configure>g__MiddlewareFilterBuilder|0(IApplicationBuilder builder)
at Microsoft.AspNetCore.HostFilteringStartupFilter.<>c__DisplayClass0_0.<Configure>b__0(IApplicationBuilder app)
at Microsoft.AspNetCore.Hosting.GenericWebHostService.StartAsync(CancellationToken cancellationToken)
at Microsoft.Extensions.Hosting.Internal.Host.StartAsync(CancellationToken cancellationToken)
at Microsoft.Extensions.Hosting.HostingAbstractionsHostExtensions.RunAsync(IHost host, CancellationToken token)
at Microsoft.Extensions.Hosting.HostingAbstractionsHostExtensions.RunAsync(IHost host, CancellationToken token)
at Microsoft.Extensions.Hosting.HostingAbstractionsHostExtensions.Run(IHost host)
Someone had any idea how to fix this?
1 ответ
Однако, если EF Core находит параметризованный конструктор с именами параметров и типами, которые соответствуют сопоставленным свойствам, он вместо этого вызовет параметризованный конструктор со значениями для этих свойств и не будет явно устанавливать типы каждого свойства с конструкторами Ef core
Мне кажется, что ваше сопоставленное имя свойства - это значение, а имя вашего параметра конструктора - почтовый индекс.