async Task <PreprocessingStepParams> ProcessLoadedStep(PreprocessingHistoryItem loadedStep, PreprocessingStepParams currentParams)
{
var step = owner.CreateStepByName(loadedStep.StepName, SetArgument(currentParams, loadedStep.Argument));
if (step != null)
{
return(await step.ExecuteLoadedStep(this));
}
return(null);
}
static IEnumerable <PreprocessingHistoryItem> LoadStepsFromConnectionParams(IConnectionParams connectParams)
{
for (int stepIdx = 0; ; ++stepIdx)
{
string stepStr = connectParams[string.Format("{0}{1}", ConnectionParamsKeys.PreprocessingStepParamPrefix, stepIdx)];
if (stepStr == null)
{
break;
}
if (PreprocessingHistoryItem.TryParse(stepStr, out var step))
{
yield return(step);
}
}
}
public static bool TryParse(string str, out PreprocessingHistoryItem ret)
{
str = str.Trim();
if (str.Length != 0)
{
int idx = str.IndexOf(' ');
if (idx == -1)
{
ret = new PreprocessingHistoryItem(str);
}
else
{
ret = new PreprocessingHistoryItem(str.Substring(0, idx), str.Substring(idx + 1));
}
return(true);
}
ret = null;
return(false);
}