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Наполнение классов. Создание БД. Миграция.

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This commit is contained in:
Андрей Байгулов 2024-05-07 21:09:45 +04:00
parent 66094682db
commit 3f9ba17003
10 changed files with 438 additions and 3 deletions
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56
SUBD/SUBD/ComponentEntity/Component.cs Normal file
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using System;
using System.Collections.Generic;
using System.ComponentModel.DataAnnotations.Schema;
using System.ComponentModel.DataAnnotations;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace SUBD.ComponentEntity
{
public class Component : IComponentModel
{
public int Id { get; private set; }
[Required]
public string ComponentName { get; private set; } = string.Empty;
[Required]
public double Cost { get; set; }
public static Component? Create(ComponentBindingModel model)
{
if (model == null)
{
return null;
}
return new Component()
{
Id = model.Id,
ComponentName = model.ComponentName,
Cost = model.Cost
};
}
public static Component Create(ComponentViewModel model)
{
return new Component
{
Id = model.Id,
ComponentName = model.ComponentName,
Cost = model.Cost
};
}
public void Update(ComponentBindingModel model)
{
if (model == null)
{
return;
}
ComponentName = model.ComponentName;
Cost = model.Cost;
}
public ComponentViewModel GetViewModel => new()
{
Id = Id,
ComponentName = ComponentName,
Cost = Cost
};
}
}

94
SUBD/SUBD/ComponentEntity/ComponentLogic.cs Normal file
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using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace SUBD.ComponentEntity
{
public class ComponentLogic : IComponentLogic
{
private readonly IComponentStorage _componentStorage;
public ComponentLogic(IComponentStorage componentStorage)
{
_componentStorage = componentStorage;
}
public List<ComponentViewModel>? ReadList(ComponentSearchModel? model)
{
var list = model == null ? _componentStorage.GetFullList() : _componentStorage.GetFilteredList(model);
if (list == null)
{
return null;
}
return list;
}
public ComponentViewModel? ReadElement(ComponentSearchModel model)
{
if (model == null)
{
throw new ArgumentNullException(nameof(model));
}
var element = _componentStorage.GetElement(model);
if (element == null)
{
return null;
}
return element;
}
public bool Create(ComponentBindingModel model)
{
CheckModel(model);
if (_componentStorage.Insert(model) == null)
{
return false;
}
return true;
}
public bool Update(ComponentBindingModel model)
{
CheckModel(model);
if (_componentStorage.Update(model) == null)
{
return false;
}
return true;
}
public bool Delete(ComponentBindingModel model)
{
CheckModel(model, false);
if (_componentStorage.Delete(model) == null)
{
return false;
}
return true;
}
private void CheckModel(ComponentBindingModel model, bool withParams = true)
{
if (model == null)
{
throw new ArgumentNullException(nameof(model));
}
if (!withParams)
{
return;
}
if (string.IsNullOrEmpty(model.ComponentName))
{
throw new ArgumentNullException("Нет названия компонента",
nameof(model.ComponentName));
}
if (model.Cost <= 0)
{
throw new ArgumentNullException("Цена компонента должна быть больше 0", nameof(model.Cost));
}
var element = _componentStorage.GetElement(new ComponentSearchModel
{
ComponentName = model.ComponentName
});
if (element != null && element.Id != model.Id)
{
throw new InvalidOperationException("Компонент с таким названием уже есть");
}
}
}
}

80
SUBD/SUBD/ComponentEntity/ComponentStorage.cs Normal file
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using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace SUBD.ComponentEntity
{
public class ComponentStorage : IComponentStorage
{
public List<ComponentViewModel> GetFullList()
{
using var context = new ComponentsDatabase();
return context.Components.Select(x => x.GetViewModel).ToList();
}
public List<ComponentViewModel> GetFilteredList(ComponentSearchModel model)
{
if (string.IsNullOrEmpty(model.ComponentName))
{
return new();
}
using var context = new ComponentsDatabase();
return context.Components.Where(x => x.ComponentName.Contains(model.ComponentName)).Select(x => x.GetViewModel).ToList();
}
public ComponentViewModel? GetElement(ComponentSearchModel model)
{
if (string.IsNullOrEmpty(model.ComponentName) && !model.Id.HasValue)
{
return null;
}
using var context = new ComponentsDatabase();
return context.Components.FirstOrDefault(x =>
(!string.IsNullOrEmpty(model.ComponentName) && x.ComponentName == model.ComponentName) ||
(model.Id.HasValue && x.Id == model.Id))
?.GetViewModel;
}
public ComponentViewModel? Insert(ComponentBindingModel model)
{
var newComponent = Component.Create(model);
if (newComponent == null)
{
return null;
}
using var context = new ComponentsDatabase();
context.Components.Add(newComponent);
context.SaveChanges();
return newComponent.GetViewModel;
}
public ComponentViewModel? Update(ComponentBindingModel model)
{
using var context = new ComponentsDatabase();
var component = context.Components.FirstOrDefault(x => x.Id == model.Id);
if (component == null)
{
return null;
}
component.Update(model);
context.SaveChanges();
return component.GetViewModel;
}
public ComponentViewModel? Delete(ComponentBindingModel model)
{
using var context = new ComponentsDatabase();
var element = context.Components.FirstOrDefault(rec => rec.Id == model.Id);
if (element != null)
{
context.Components.Remove(element);
context.SaveChanges();
return element.GetViewModel;
}
return null;
}
}
}

28
SUBD/SUBD/ComponentEntity/ComponentsDatabase.cs Normal file
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using Microsoft.EntityFrameworkCore;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using static System.Windows.Forms.VisualStyles.VisualStyleElement;
namespace SUBD.ComponentEntity
{
public class ComponentsDatabase : DbContext
{
protected override void OnConfiguring(DbContextOptionsBuilder OptionsBuilder)
{
if (OptionsBuilder.IsConfigured == false)
{
OptionsBuilder.UseNpgsql(@"Host=localhost;Database=Components;Username=postgres;Password=postgres");
}
base.OnConfiguring(OptionsBuilder);
AppContext.SetSwitch("Npgsql.EnableLegacyTimestampBehavior", true);
AppContext.SetSwitch("Npgsql.DisableDateTimeInfinityConversions", true);
}
public virtual DbSet<Component> Components { set; get; }
}
}

18
SUBD/SUBD/ComponentEntity/IComponentStorage.cs Normal file
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using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace SUBD.ComponentEntity
{
public interface IComponentStorage
{
List<ComponentViewModel> GetFullList();
List<ComponentViewModel> GetFilteredList(ComponentSearchModel model);
ComponentViewModel? GetElement(ComponentSearchModel model);
ComponentViewModel? Insert(ComponentBindingModel model);
ComponentViewModel? Update(ComponentBindingModel model);
ComponentViewModel? Delete(ComponentBindingModel model);
}
}

49
SUBD/SUBD/Migrations/20240507170902_Initial.Designer.cs generated Normal file
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// <auto-generated />
using Microsoft.EntityFrameworkCore;
using Microsoft.EntityFrameworkCore.Infrastructure;
using Microsoft.EntityFrameworkCore.Migrations;
using Microsoft.EntityFrameworkCore.Storage.ValueConversion;
using Npgsql.EntityFrameworkCore.PostgreSQL.Metadata;
using SUBD.ComponentEntity;
#nullable disable
namespace SUBD.Migrations
{
[DbContext(typeof(ComponentsDatabase))]
[Migration("20240507170902_Initial")]
partial class Initial
{
/// <inheritdoc />
protected override void BuildTargetModel(ModelBuilder modelBuilder)
{
#pragma warning disable 612, 618
modelBuilder
.HasAnnotation("ProductVersion", "8.0.4")
.HasAnnotation("Relational:MaxIdentifierLength", 63);
NpgsqlModelBuilderExtensions.UseIdentityByDefaultColumns(modelBuilder);
modelBuilder.Entity("SUBD.ComponentEntity.Component", b =>
{
b.Property<int>("Id")
.ValueGeneratedOnAdd()
.HasColumnType("integer");
NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("Id"));
b.Property<string>("ComponentName")
.IsRequired()
.HasColumnType("text");
b.Property<double>("Cost")
.HasColumnType("double precision");
b.HasKey("Id");
b.ToTable("Components");
});
#pragma warning restore 612, 618
}
}
}

36
SUBD/SUBD/Migrations/20240507170902_Initial.cs Normal file
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using Microsoft.EntityFrameworkCore.Migrations;
using Npgsql.EntityFrameworkCore.PostgreSQL.Metadata;
#nullable disable
namespace SUBD.Migrations
{
/// <inheritdoc />
public partial class Initial : Migration
{
/// <inheritdoc />
protected override void Up(MigrationBuilder migrationBuilder)
{
migrationBuilder.CreateTable(
name: "Components",
columns: table => new
{
Id = table.Column<int>(type: "integer", nullable: false)
.Annotation("Npgsql:ValueGenerationStrategy", NpgsqlValueGenerationStrategy.IdentityByDefaultColumn),
ComponentName = table.Column<string>(type: "text", nullable: false),
Cost = table.Column<double>(type: "double precision", nullable: false)
},
constraints: table =>
{
table.PrimaryKey("PK_Components", x => x.Id);
});
}
/// <inheritdoc />
protected override void Down(MigrationBuilder migrationBuilder)
{
migrationBuilder.DropTable(
name: "Components");
}
}
}

46
SUBD/SUBD/Migrations/ComponentsDatabaseModelSnapshot.cs Normal file
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// <auto-generated />
using Microsoft.EntityFrameworkCore;
using Microsoft.EntityFrameworkCore.Infrastructure;
using Microsoft.EntityFrameworkCore.Storage.ValueConversion;
using Npgsql.EntityFrameworkCore.PostgreSQL.Metadata;
using SUBD.ComponentEntity;
#nullable disable
namespace SUBD.Migrations
{
[DbContext(typeof(ComponentsDatabase))]
partial class ComponentsDatabaseModelSnapshot : ModelSnapshot
{
protected override void BuildModel(ModelBuilder modelBuilder)
{
#pragma warning disable 612, 618
modelBuilder
.HasAnnotation("ProductVersion", "8.0.4")
.HasAnnotation("Relational:MaxIdentifierLength", 63);
NpgsqlModelBuilderExtensions.UseIdentityByDefaultColumns(modelBuilder);
modelBuilder.Entity("SUBD.ComponentEntity.Component", b =>
{
b.Property<int>("Id")
.ValueGeneratedOnAdd()
.HasColumnType("integer");
NpgsqlPropertyBuilderExtensions.UseIdentityByDefaultColumn(b.Property<int>("Id"));
b.Property<string>("ComponentName")
.IsRequired()
.HasColumnType("text");
b.Property<double>("Cost")
.HasColumnType("double precision");
b.HasKey("Id");
b.ToTable("Components");
});
#pragma warning restore 612, 618
}
}
}

20
SUBD/SUBD/Program.cs
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@ -1,17 +1,31 @@
using SUBD.ComponentEntity;
using Microsoft.Extensions.DependencyInjection;
using System;
namespace SUBD
{
internal static class Program
{
private static ServiceProvider? _serviceProvider;
public static ServiceProvider? ServiceProvider => _serviceProvider;
/// <summary>
/// The main entry point for the application.
/// </summary>
[STAThread]
static void Main()
{
// To customize application configuration such as set high DPI settings or default font,
// see https://aka.ms/applicationconfiguration.
ApplicationConfiguration.Initialize();
Application.Run(new FormSushi());
var services = new ServiceCollection();
ConfigureServices(services);
_serviceProvider = services.BuildServiceProvider();
Application.Run(_serviceProvider.GetRequiredService<FormComponents>());
}
private static void ConfigureServices(ServiceCollection services)
{
services.AddTransient<IComponentStorage, ComponentStorage>();
services.AddTransient<IComponentLogic, ComponentLogic>();
services.AddTransient<FormComponent>();
services.AddTransient<FormComponents>();
}
}
}

14
SUBD/SUBD/SUBD.csproj
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@ -8,4 +8,18 @@
<ImplicitUsings>enable</ImplicitUsings>
</PropertyGroup>
<ItemGroup>
<PackageReference Include="Microsoft.EntityFrameworkCore" Version="8.0.4" />
<PackageReference Include="Microsoft.EntityFrameworkCore.Design" Version="8.0.4">
<PrivateAssets>all</PrivateAssets>
<IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
</PackageReference>
<PackageReference Include="Microsoft.EntityFrameworkCore.Tools" Version="8.0.4">
<PrivateAssets>all</PrivateAssets>
<IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
</PackageReference>
<PackageReference Include="Microsoft.Extensions.DependencyInjection" Version="8.0.0" />
<PackageReference Include="Npgsql.EntityFrameworkCore.PostgreSQL" Version="8.0.2" />
</ItemGroup>
</Project>