86 lines
3.8 KiB
C#
86 lines
3.8 KiB
C#
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using System;
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using System.Collections.Generic;
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using System.ComponentModel;
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using System.Linq;
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using System.Text;
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using System.Threading.Tasks;
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using Azure.Core;
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using Azure;
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using CarShowroomDatabaseStorage.Entities;
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using Microsoft.EntityFrameworkCore;
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namespace CarShowroomDatabaseStorage
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{
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public class CarShowroomDatabase : DbContext
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{
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protected override void OnConfiguring(DbContextOptionsBuilder optionsBuilder)
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{
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if (optionsBuilder.IsConfigured == false)
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{
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optionsBuilder.UseNpgsql("Host=localhost;Port=5433;Database=CarShowroomDatabase;Username=postgres;Password=postgres");
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//ptionsBuilder.UseSqlServer(@"Data Source=localhost\SQLEXPRESS;Initial Catalog=CarShowroomDatabase;Integrated Security=True;MultipleActiveResultSets=True;;TrustServerCertificate=True");
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}
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base.OnConfiguring(optionsBuilder);
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}
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protected override void OnModelCreating(ModelBuilder modelBuilder)
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{
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//composite primary keys
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modelBuilder.Entity<SaleCar>().HasKey(sc => new { sc.SaleId, sc.CarId });
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modelBuilder.Entity<SaleService>().HasKey(sc => new { sc.SaleId, sc.ServiceId });
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//default values
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modelBuilder.Entity<Client>().Property(c => c.Name).HasDefaultValue("empty_string");
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modelBuilder.Entity<Employee>().Property(e => e.Name).HasDefaultValue("empty_string");
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modelBuilder.Entity<Employee>().Property(e => e.Password).HasDefaultValue("empty_string");
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modelBuilder.Entity<Car>().Property(c => c.Color).HasDefaultValue("empty_string");
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modelBuilder.Entity<Service>().Property(c => c.Cost).HasDefaultValue(-1);
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modelBuilder.Entity<Model>().Property(c => c.Price).HasDefaultValue(-1);
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modelBuilder.Entity<Sale>().Property(c => c.Cost).HasDefaultValue(-1);
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//on delete actions
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modelBuilder.Entity<Model>()
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.HasOne(m => m.Make)
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.WithMany(m => m.Models)
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.OnDelete(DeleteBehavior.Restrict);
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modelBuilder.Entity<Car>()
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.HasOne(m => m.Model)
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.WithMany(m => m.Cars)
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.OnDelete(DeleteBehavior.Restrict);
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modelBuilder.Entity<Sale>()
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.HasOne(m => m.Client)
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.WithMany(m => m.Sales)
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.OnDelete(DeleteBehavior.SetNull);
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modelBuilder.Entity<Sale>()
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.HasOne(m => m.Employee)
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.WithMany(m => m.Sales)
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.OnDelete(DeleteBehavior.SetNull);
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modelBuilder.Entity<SaleService>()
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.HasOne(m => m.Sale)
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.WithMany(m => m.SaleServices)
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.OnDelete(DeleteBehavior.Restrict);
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modelBuilder.Entity<SaleCar>()
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.HasOne(m => m.Sale)
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.WithMany(m => m.SaleCars)
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.OnDelete(DeleteBehavior.Restrict);
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modelBuilder.Entity<SaleService>()
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.HasOne(m => m.Service)
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.WithMany(m => m.SaleServices)
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.OnDelete(DeleteBehavior.Cascade);
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modelBuilder.Entity<SaleCar>()
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.HasOne(m => m.Car)
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.WithMany(m => m.SaleCars)
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.OnDelete(DeleteBehavior.Cascade);
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base.OnModelCreating(modelBuilder);
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}
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public virtual DbSet<Make> Makes { set; get; }
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public virtual DbSet<Model> Models { set; get; }
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public virtual DbSet<Car> Cars { set; get; }
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public virtual DbSet<Service> Services { set; get; }
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public virtual DbSet<Employee> Employees { set; get; }
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public virtual DbSet<Client> Clients { set; get; }
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public virtual DbSet<Sale> Sales { set; get; }
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public virtual DbSet<SaleCar> SaleCars { set; get; }
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public virtual DbSet<SaleService> SaleServices { set; get; }
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}
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}
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