private void OpenTransaction(
EFTransactionFeature eFTransactionFeature,
IUnitOfWork uow,
TDbContext dbContext,
Func <bool> externalRule = null)
{
var externalCheckResult = externalRule == null ? true : externalRule.Invoke();
if (InternalOpenRuleCheck(eFTransactionFeature, uow) && externalCheckResult)
{
Debug.Print("open a transaction.");
var dbcontextTransaction = uow.UnitOfWorkOptions.IsolationLevel.HasValue ?
dbContext.Database.BeginTransaction(uow.UnitOfWorkOptions.IsolationLevel.Value) :
dbContext.Database.BeginTransaction();
eFTransactionFeature.SetTransaction(dbcontextTransaction);
}
bool InternalOpenRuleCheck(EFTransactionFeature efFeature, IUnitOfWork uow)
=> uow.UnitOfWorkOptions.Limit != UnitOfWorkLimit.Suppress && !efFeature.IsOpenTransaction;
}
public TDbContext CreateDbContext()
{
var currentUow = _uowManager.GetCurrentUnitOfWork();
if (currentUow == null)
{
throw new NullReferenceException("Cannot get a unit of work,Please check create root unit of work correctly");
}
var transactionFeature = currentUow.GetTransactionFeature(_key);
if (transactionFeature != null && transactionFeature is EFTransactionFeature efTransacationFeature)
{
var cacheDbContext = (TDbContext)efTransacationFeature.DbContext;
if (!efTransacationFeature.IsOpenTransaction)
{
//is need open transaction
OpenTransaction(efTransacationFeature, currentUow, cacheDbContext);
}
return(cacheDbContext);
}
var wantedDbContext = (TDbContext)currentUow.ServiceProvider.GetService(typeof(TDbContext));
if (wantedDbContext == null)
{
throw new NullReferenceException("Cannot get DbContext.Please check add ef services correctly");
}
var newEFTransactionFeature = new EFTransactionFeature(wantedDbContext);
currentUow.GetOrAddTransactionFeature(_key, newEFTransactionFeature);
OpenTransaction(newEFTransactionFeature, currentUow, wantedDbContext);
return(wantedDbContext);
}