public DataConflictException(string errorType, DataConflictInfo info)
: base(errorType, "Data conflict (Optimistic concurrency)")
{
BaseDbModel dbValues = (BaseDbModel)info.DatabaseValues.ToObject();
BaseDbModel cValues = (BaseDbModel)info.CurrentValues.ToObject();
this.DatabaseValues = dbValues;
this.CurrentValues = cValues;
}
protected async Task <SaveResult> SaveAsync(DataConflictPolicy policy)
{
bool saveFailed;
do
{
saveFailed = false;
try
{
int result = await this.context.SaveChangesAsync();
return(new SaveResult {
AlteredObjectsCount = result
});
}
catch (DbUpdateConcurrencyException exception)
{
if (policy == DataConflictPolicy.NoPolicy)
{
throw new DalException(DalErrorType.BaseServiceDataConflictWithNoPolicy,
"Data conflict (Optimistic concurrency)");
}
saveFailed = true;
DataConflictInfo info = OptimisticConcurrency.ApplyPolicy(policy, exception);
if (info != null)
{
throw new DataConflictException(DalErrorType.BaseServiceDataConflictWithAskClientPolicy, info);
}
}
catch (Exception exception)
{
exception.HandleException();
}
} while (saveFailed);
return(null);
}
public SaveResult()
{
this.AlteredObjectsCount = 0;
this.AlteredIds = new int[] { };
this.DataConflictInfo = null;
}
