如何在 ASP.NET 样板中获取当前事务？

Question

I have a project that written ASP.NET Boilerplate (assembly version=4.0.2.0).

I want get current transcation object in Application layer. How can I achieve this?

Answer 1

You get current unit of work with using IUnitOfWorkManager .

IUnitOfWorkManager _unitorWorkManager;
//...
[UnitOfWork]
public void Test(){
    /*
    Your code
    */
    
    _unitOfWorkManager.Current//gives you current unit of work
        .SaveChanges();//same thing with transaction.Commit();
}

If your class inherits something like AbpController , BackgroundJob , AbpServiceBase etc..., you can also use CurrentUnitOfWork .

//...
[UnitOfWork]
public void Test(){
    /*
    Your code
    */

    CurrentUnitOfWork.SaveChanges();//same thing with transaction.Commit();
}

You can check https://aspnetboilerplate.com/Pages/Documents/Unit-Of-Work for more information.

---

Edit: I guess it is not possible to get it in application layer directly since it need dbcontext parameter. What about creating a domain service which provides ActiveDbTransaction. You can create an interface for that in *.Core project and define it where you can access to dbcontext

public interface IMyDbContextActiveTransactionProvider
{
    /// <summary>
    ///     Gets the active transaction or null if current UOW is not transactional.
    /// </summary>
    /// <param name="args"></param>
    /// <returns></returns>
    IDbTransaction GetActiveTransaction(ActiveTransactionProviderArgs args);
}

Implement it someplace you can access to dbcontext

public class MyDbContextActiveTransactionProvider: IMyDbContextActiveTransactionProvider, ITransientDependency {
    private readonly IActiveTransactionProvider _transactionProvider;
    public MyDbContextActiveTransactionProvider(IActiveTransactionProvider transactionProvider){
        _transactionProvider = transactionProvider;
    }

    IDbTransaction GetActiveTransaction(ActiveTransactionProviderArgs args){
        return _transactionProvider.GetActiveTransaction(new ActiveTransactionProviderArgs
        {
            {"ContextType", typeof(MyDbContext) },
            {"MultiTenancySide", MultiTenancySide }
        });
     }
}

https://aspnetboilerplate.com/Pages/Documents/Articles/Using-Stored-Procedures,-User-Defined-Functions-and-Views/index.html#DocHelperMethods