static bool getResultFromPrevIfElse(
SagaSteps childSteps,
ISagaStep step,
SagaExecutionState sagaState)
{
while (true)
{
ISagaStep prevStepIf = GetPrevStepSameLevel(childSteps, step.ParentStep, step);
if (prevStepIf.Is <ISagaStepForIf>())
{
IStepData stepDataIf = sagaState.History.
GetLatestByStepName(prevStepIf.StepName);
if (stepDataIf?.ExecutionData?.ConditionResult == true)
{
return(true);
}
if (!prevStepIf.Is <ISagaStepForElse>())
{
return(false);
}
step = prevStepIf;
}
else
{
return(false);
}
}
}
static NextStepInfo getNextStepForIf(
ISagaAction sagaAction,
ISagaStep step,
SagaExecutionState sagaState)
{
if (step.Is <ISagaStepForIf>())
{
IStepData currentStepData = sagaState.History.
GetLatestByStepName(step.StepName);
if (currentStepData?.ExecutionData?.ConditionResult == true)
{
return(new NextStepInfo {
NextStep = step.ChildSteps.GetFirstStep()
});
}
else
{
return(new NextStepInfo {
NextStep = GetNextStepElsewhere(sagaAction.ChildSteps, step)
});
}
}
return(null);
}
static ISagaStep getNextStepForElse(
ISagaAction sagaAction,
ISagaStep step,
SagaExecutionState sagaState)
{
if (step.Is <ISagaStepForElse>())
{
bool ifElseResult = getResultFromPrevIfElse(
sagaAction.ChildSteps,
step,
sagaState);
// jesli if-else jest spelniony to nie wchodzimy juz do niego
// czyli szukamy kolengo kroku poza if-else
if (ifElseResult)
{
ISagaStep nextStepAfterIfElse = GetNextStepAfterIfElse(
sagaAction.ChildSteps,
step);
if (nextStepAfterIfElse != null)
{
return(nextStepAfterIfElse);
}
}
return(getNextStep(sagaAction, step, sagaState));
}
return(step);
}
static ISagaStep GetNextStepAfterIfElse(
SagaSteps childSteps,
ISagaStep step)
{
while (true)
{
ISagaStep nextStep = GetNextStepSameLevel(childSteps, step);
if (nextStep.Is <ISagaStepForIf>() && nextStep.Is <ISagaStepForElse>())
{
step = nextStep;
}
else if (!nextStep.Is <ISagaStepForIf>() && nextStep.Is <ISagaStepForElse>())
{
step = nextStep;
}
else
{
return(nextStep);
}
}
}