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c# – PetaPoco工作单元库模式
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下面的代码似乎使用这个:
var unitOfWorkProvider = new PetaPocoUnitOfWorkProvider();
var repository = new FakeRepository();
var fake = new Fake
{
// etc.
};
using (var uow = unitOfWorkProvider.GetUnitOfWork("BlaConnectionString"))
{
repository.Insert(uow, fake);
uow.Commit();
}
最终可能会进入服务层.我将不胜感激任何改进此代码的反馈.
public interface IUnitOfWork : IDisposable
{
void Commit();
Database Database { get; }
}
public interface IUnitOfWorkProvider
{
IUnitOfWork GetUnitOfWork(string connectionString);
}
public class PetaPocoUnitOfWorkProvider : IUnitOfWorkProvider
{
public IUnitOfWork GetUnitOfWork(string connectionString)
{
return new PetaPocoUnitOfWork(connectionString);
}
}
public interface IRepository<T>
{
void Insert(IUnitOfWork unitOfWork, T entity);
void Update(IUnitOfWork unitOfWork, T entity);
void Delete(IUnitOfWork unitOfWork, T entity);
T Fetch(IUnitOfWork unitOfWork, long uid);
}
public class PetaPocoUnitOfWork : IUnitOfWork
{
private readonly Transaction _petaTransaction;
private readonly Database _database;
public PetaPocoUnitOfWork(string connectionString)
{
_database = new Database(connectionString);
_petaTransaction = new Transaction(_database);
}
public void Dispose()
{
_petaTransaction.Dispose();
}
public Database Database
{
get { return _database; }
}
public void Commit()
{
_petaTransaction.Complete();
}
}
public class FakeRepository : IRepository<Fake>
{
public void Insert(IUnitOfWork unitOfWork, Fake entity)
{
unitOfWork.Database.Save(entity);
}
public void Update(IUnitOfWork unitOfWork, Fake entity)
{
unitOfWork.Database.Update(entity);
}
public void Delete(IUnitOfWork unitOfWork, Fake entity)
{
unitOfWork.Database.Delete(entity);
}
public FakeJobFact Fetch(IUnitOfWork unitOfWork, long uid)
{
return unitOfWork.Database.Fetch<Fake>("SELECT * FROM Fakes WHERE [FakeId] = @0", uid).FirstOrDefault();
}
}
PS:
我根据@Plebsori当前的答案调整了代码:
public abstract class BaseRepository<T>
{
protected IDatabase Database
{
get
{
return UnitOfWork.Current;
}
}
public void Insert(T entity)
{
Database.Save(entity);
}
public void Update(T entity)
{
Database.Update(entity);
}
public void Delete(T entity)
{
Database.Delete(entity);
}
}
public interface IRepository<T>
{
void Insert(T entity);
void Update(T entity);
void Delete(T entity);
T Fetch(long uid);
}
public interface IUnitOfWork : IDisposable
{
void Commit();
Database Database { get; }
}
public interface IUnitOfWorkProvider
{
IUnitOfWork GetUnitOfWork(string connectionString);
}
public class PetaPocoUnitOfWork : IUnitOfWork
{
private readonly Transaction _petaTransaction;
private readonly Database _database;
public PetaPocoUnitOfWork(string connectionString)
{
_database = new Database(connectionString);
_petaTransaction = new Transaction(_database);
}
public void Dispose()
{
UnitOfWork.Current = null;
_petaTransaction.Dispose();
}
public Database Database
{
get { return _database; }
}
public void Commit()
{
_petaTransaction.Complete();
}
}
public class PetaPocoUnitOfWorkProvider : IUnitOfWorkProvider
{
public IUnitOfWork GetUnitOfWork(string connectionString)
{
if (UnitOfWork.Current != null)
{
throw new InvalidOperationException("Existing unit of work.");
}
var petaPocoUnitOfWork = new PetaPocoUnitOfWork(connectionString);
UnitOfWork.Current = petaPocoUnitOfWork.Database;
return petaPocoUnitOfWork;
}
}
public static class UnitOfWork
{
[ThreadStatic] public static IDatabase Current;
}
解决方法:
您可能会或可能不会喜欢,但这是我如何从界面中删除工作单元和工作单元的传递.
var unitOfWorkProvider = new PetaPocoUnitOfWorkProvider();
var repository = new FakeRepository();
var fake = new Fake
{
// etc.
};
using (var uow = unitOfWorkProvider.GetUnitOfWork("BlaConnectionString"))
{
repository.Insert(fake);
uow.Commit();
}
码
public interface IUnitOfWorkProvider
{
IUnitOfWork GetUnitOfWork(string connectionString);
}
public static class UnitOfWork
{
[ThreadStatic]
public static IUnitOfWork Current { get; set; }
}
public class PetaPocoUnitOfWorkProvider : IUnitOfWorkProvider
{
public IUnitOfWork GetUnitOfWork(string connectionString)
{
if (UnitOfWork.Current != null)
{
throw new InvalidOperationException("Existing unit of work.");
}
UnitOfWork.Current = new PetaPocoUnitOfWork(connectionString);
return UnitOfWork.Current;
}
}
public interface IRepository<T>
{
void Insert(T entity);
void Update(T entity);
void Delete(T entity);
T Fetch(long uid);
}
public class PetaPocoUnitOfWork : IUnitOfWork
{
private readonly Transaction _petaTransaction;
private readonly Database _database;
public PetaPocoUnitOfWork(string connectionString)
{
_database = new Database(connectionString);
_petaTransaction = new Transaction(_database);
}
public void Dispose()
{
UnitOfWork.Current = null;
_petaTransaction.Dispose();
}
public Database Database
{
get { return _database; }
}
public void Commit()
{
_petaTransaction.Complete();
}
}
public abstract class BaseRepository<T> : IRepository<T>
{
protected IDatabase Db
{
get
{
return UnitOfWork.Current;
}
}
}
public class FakeRepository : BaseRepository<T>
{
public void Insert(Fake entity)
{
Db.Save(entity);
}
public void Update(Fake entity)
{
Db.Update(entity);
}
public void Delete(Fake entity)
{
Db.Delete(entity);
}
public FakeJobFact Fetch(long uid)
{
return Db.Fetch<Fake>("SELECT * FROM Fakes WHERE [FakeId] = @0", uid).FirstOrDefault();
}
}
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