/// <summary>
/// Attempts to get a data cooker reference given a data cooker path.
/// </summary>
/// <param name="self">
/// A data extension repository to search.
/// </param>
/// <param name="dataCookerPath">
/// A path to a data cooker.
/// </param>
/// <param name="cooker">
/// Receives the result: a data cooker reference, or <c>null</c> if not found.
/// </param>
/// <returns>
/// true if the path resulted in a data cooker reference; false otherwise.
/// </returns>
public static bool TryGetDataCookerReference(
this IDataExtensionRepository self,
DataCookerPath dataCookerPath,
out IDataCookerReference cooker)
{
Guard.NotNull(self, nameof(self));
cooker = self.GetSourceDataCookerReference(dataCookerPath);
if (cooker is null)
{
cooker = self.GetCompositeDataCookerReference(dataCookerPath);
}
return(!(cooker is null));
}
/// <summary>
/// This will process all of the data cooker requirements for the target data
/// extension (both source and composite). It will recursively descend through requirements,
/// determining if the target data extension may be used.
/// </summary>
/// <param name="availableDataExtensions">
/// Data extensions that have been exposed through the runtime.
/// </param>
private void ValidateDataCookerDependencies(
IDataExtensionRepository availableDataExtensions)
{
Guard.NotNull(availableDataExtensions, nameof(availableDataExtensions));
foreach (var requiredDataCookerPath in this.target.RequiredDataCookers)
{
IDataCookerReference dataCookerReference = null;
var sourceId = requiredDataCookerPath.SourceParserId;
if (string.IsNullOrWhiteSpace(sourceId))
{
// Add composite data cooker
var requiredCookerReference = availableDataExtensions.GetCompositeDataCookerReference(requiredDataCookerPath);
if (requiredCookerReference == null)
{
this.UpdateAvailability(DataExtensionAvailability.MissingRequirement);
this.missingDataCookers.Add(requiredDataCookerPath);
continue;
}
dataCookerReference = requiredCookerReference;
this.dependencyReferences.AddRequiredCompositeDataCookerPath(requiredCookerReference.Path);
}
else
{
// Add source data cooker
var requiredCookerReference = availableDataExtensions.GetSourceDataCookerReference(requiredDataCookerPath);
if (requiredCookerReference == null)
{
this.UpdateAvailability(DataExtensionAvailability.MissingRequirement);
this.missingDataCookers.Add(requiredDataCookerPath);
continue;
}
dataCookerReference = requiredCookerReference;
this.dependencyReferences.AddRequiredSourceDataCookerPath(requiredCookerReference.Path);
}
this.ProcessRequiredExtension(dataCookerReference, requiredDataCookerPath.CookerPath, availableDataExtensions);
}
}