public static async Task MoveForward <TStepId, TData>(MoveToStepContext <TStepId, TData> context)
#endif
{
IStepEnumerator <TStepId, TData> stepEnumerator = context.Session.StepEnumerator;
IMoveInfo <TStepId> moveInfo = context.Session.MoveInfo;
int moveCount = 0;
do
{
stepEnumerator.MoveNext();
++moveCount;
}while (stepEnumerator.CurrentStep != null &&
!moveInfo.Comparer.Equals(stepEnumerator.CurrentStep.Id, moveInfo.Id));
context.Session.MoveInfo = null;
if (stepEnumerator.CurrentStep == null)
{
for (int i = 0; i < moveCount; ++i)
{
stepEnumerator.MovePrevious();
}
#if NET35 || NOASYNC
RunUndoOperation.RunUndo(new RunUndoContext <TStepId, TData>()
#else
await RunUndoOperation.RunUndo(new RunUndoContext <TStepId, TData>()
#endif
{
Result = ResultType.Failed,
CaughtException = new InvalidOperationException(string.Format("Could not move forward to a step with id '{0}' as the step does not exist.", moveInfo.Id)),
Session = context.Session
});
return;
}
#if NET35 || NOASYNC
context.MoveToStepFinishAction();
#else
await context.MoveToStepFinishAction();
#endif
}
/// <summary>
/// Returns a value indicating whether the step enumerator is set to the first step.
/// </summary>
/// <typeparam name="TStepId">The type of the step id.</typeparam>
/// <typeparam name="TData">The type of the transaction data.</typeparam>
/// <param name="stepEnumerator">The step enumerator.</param>
/// <returns><c>True</c> if the step enumerator is set to the first step, otherwise <c>false</c>.</returns>
public static bool IsFirstStep <TStepId, TData>(this IStepEnumerator <TStepId, TData> stepEnumerator)
{
return(stepEnumerator.CurrentStepIndex == 0);
}
