private void EnqueueDependencies(MigrationItem completedItem, ConcurrentQueue <MigrationItem> queue, TextWriter log)
{
lock (syncRoot)
{
// mark item as processed
itemsInProgress.Remove(completedItem.ObjectId);
// and check all child items dependencies
foreach (var childItem in GetChildDependencies(completedItem).Where(HasNoDependencies))
{
log.WriteLine($"Add {childItem} into a queue.");
queue.Enqueue(childItem);
}
}
}
private IEnumerable <MigrationItem> GetChildDependencies(MigrationItem item)
{
MigrationItem[] childs;
return(dependenciesChild.TryGetValue(item.ObjectId, out childs) ? childs : Enumerable.Empty <MigrationItem>());
}
private bool HasNoDependencies(MigrationItem item)
{
int[] parents;
return(!dependenciesParent.TryGetValue(item.ObjectId, out parents) || parents.All(id => !itemsInProgress.Contains(id)));
}