Programmiererforum

Code: Select all

public class Cafe : Entity
{
private Cafe() : base(default!) { }

private Cafe(
CafeId cafeId,
string name,
string description,
string location) : base(cafeId)
{
CafeId = cafeId;
Name = name;
Description = description;
Location = location;
}

public CafeId CafeId { get; private set; }
public string Name { get; private set; }
public string Description { get; private set; }
public string Location { get; private set; }
public string? Logo { get; private set; }

public static Result Create(
string name,
string description,
string location,
string? logo = null)
{
if (string.IsNullOrEmpty(name))
{
return Result.Failure(DomainError.Cafe.EmptyName);
}

var cafe = new Cafe(
CafeId.GenerateID(),
name,
description,
location)
{
Logo = logo
};

return cafe;
}
}
< /code>
CafeId

Code: Select all

public record CafeId
{
private CafeId() { }

public CafeId(Guid value) => Value = value;

public static CafeId GenerateID() => new(Guid.NewGuid());

public Guid Value { get; }

public static Result Create(Guid value)
{
if (value == Guid.Empty)
{
return Result.Failure(Error.Null);
}

return new CafeId(value);
}
}
< /code>
Entity configuration:
public class DbSetCafe : IEntityTypeConfiguration
{
public void Configure(EntityTypeBuilder builder)
{
builder.ToTable("cafe");

builder.HasKey(c => c.CafeId);
builder.Property(c => c.CafeId)
.HasConversion();

builder.Property(c => c.Name)
.HasMaxLength(100)
.IsRequired();

builder.Property(c => c.Description)
.HasMaxLength(500)
.IsRequired();

builder.Property(c => c.Location)
.HasMaxLength(200)
.IsRequired();

builder.Property(c => c.Logo)
.HasMaxLength(2000);

builder.HasMany()
.WithOne()
.HasForeignKey("CafeId")
.OnDelete(DeleteBehavior.Cascade);
}
}
< /code>
Converter
public class CafeIdConvertor : ValueConverter
{
public CafeIdConvertor() : base(IN => IN.Value,
OUT => new CafeId(OUT))
{
}
}
< /code>
Entity

Code: Select all

public abstract class Entity : IEquatable where TId : notnull
{
protected Entity(TId id) => Id = id;

public TId Id { get; private init; }

public static bool operator ==(Entity? first, Entity? second) => first is not null && second is not null && first.Equals(second);

public static bool operator !=(Entity? first, Entity second) => !(first == second);

public override bool Equals(object? obj)
{
if (obj == null)
{
return false;
}

if (obj.GetType() != GetType())
{
return false;
}

if (obj is not Entity entity)
{
return false;
}

return EqualityComparer.Default.Equals(entity.Id, Id);
}

public bool Equals(Entity? other)
{
if (other == null)
{
return false;
}

if (other.GetType() != GetType())
{
return false;
}

return EqualityComparer.Default.Equals(other.Id, Id);
}

public override int GetHashCode() =>  Id.GetHashCode();
}
< /code>
DBContext

Code: Select all

public class EmployeeDBContext : DbContext
{
public EmployeeDBContext(DbContextOptions options)
: base(options) { }

public DbSet Employee { get; set; }
public DbSet Cafe { get; set; }

protected override void OnModelCreating(ModelBuilder modelBuilder)
{
modelBuilder.ApplyConfigurationsFromAssembly(GetType().Assembly);
base.OnModelCreating(modelBuilder);
}
protected override void OnConfiguring(DbContextOptionsBuilder optionsBuilder)
{
optionsBuilder.UseSnakeCaseNamingConvention();
optionsBuilder.EnableSensitiveDataLogging();
}
}
< /code>
[b]What I've tried[/b]
[list]
[*]Defined CafeID

Code: Select all

CafeIdConvertor