经验总结

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Asp.Net Core6.0中MediatR的应用CQRS( 五 )

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using MediatApi.Entity;using MediatR;using Microsoft.EntityFrameworkCore;using Microsoft.EntityFrameworkCore.Storage;namespace MediatApi.Helper{    public class WyyDbContext: testContext    {        private IDbContextTransaction _currentTransaction;        public IDbContextTransaction GetCurrentTransaction() => _currentTransaction;        public bool HasActiveTransaction => _currentTransaction != null;        public async Task CommitTransactionAsync(IDbContextTransaction transaction)        {            if (transaction == null) throw new ArgumentNullException(nameof(transaction));            if (transaction != _currentTransaction) throw new InvalidOperationException($"Transaction {transaction.TransactionId} is not current");            try            {                await SaveChangesAsync();                transaction.Commit();            }            catch            {                RollbackTransaction();                throw;            }            finally            {                if (_currentTransaction != null)                {                    _currentTransaction.Dispose();                    _currentTransaction = null;                }            }        }        public void RollbackTransaction()        {            try            {                _currentTransaction?.Rollback();            }            finally            {                if (_currentTransaction != null)                {                    _currentTransaction.Dispose();                    _currentTransaction = null;                }            }        }    }}

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