/// <summary>
/// When an activity gets executed and needs to be finalized, all activity objects that have
/// the same id need to be finalized too. The Attach methods puts all activities with the
/// same id to a chain to let the Finish method call the Finish method of each object in the chain.
/// This method was needed because it is possible that the same activity arrives from different
/// sources: e.g from messaging, from database or from direct execution.
/// </summary>
/// <param name="activity"></param>
internal void Attach(LuceneIndexingActivity activity)
{
if (AttachedActivity != null)
{
AttachedActivity.Attach(activity);
}
else
{
AttachedActivity = activity;
}
}
internal void WaitFor(LuceneIndexingActivity olderActivity)
{
// this method must called from thread safe block.
if (!this.WaitingFor.Any(x => x.Id == olderActivity.Id))
{
this.WaitingFor.Add(olderActivity);
}
if (!olderActivity.WaitingForMe.Any(x => x.Id == this.Id))
{
olderActivity.WaitingForMe.Add(this);
}
}
internal bool IsInTree(LuceneIndexingActivity newerActivity)
{
return(this.Path.StartsWith(newerActivity.Path, StringComparison.OrdinalIgnoreCase));
}
private static void RemoveDependency(List <LuceneIndexingActivity> dependencyList, LuceneIndexingActivity activity)
{
// this method must called from thread safe block.
dependencyList.RemoveAll(x => x.Id == activity.Id);
}
internal void FinishWaiting(LuceneIndexingActivity olderActivity)
{
// this method must called from thread safe block.
RemoveDependency(this.WaitingFor, olderActivity);
RemoveDependency(olderActivity.WaitingForMe, this);
}
