/// <summary>
/// Event: occurs when an item is not found within the result.
/// This is relevant when using the hashing feature within a product.
/// </summary>
/// <param name="o">o</param>
/// <param name="e">e</param>
public void OnItemNotFound(object o, HashItemSearchEventArgs e)
{
if (mode == HashMode.Hash)
{
if (logger != null)
{
logger.Info("Item was not found. Initiating priorityPoller to find it.");
}
bool isactive = false;
WildCardCollection w = new WildCardCollection(WildCardType.Extreme, e.Name);
if (priorityRnr != null)
{
if (priorityPoller != null)
{
isactive = priorityPoller.IsActive(w);
if (priorityRnr.IsBusy && !isactive)
{
int tries = 0;
while (priorityRnr.IsBusy && tries < 5)
{
priorityRnr.CancelAsync();
Thread.Sleep(2000); //wait a bit for the poller to stop.
tries++;
}
}
}
}
if (!isactive && !priorityRnr.IsBusy)
{
//this.priorityPoller = new TaskPoller(w, brain.Rules.GetRule(w));
this.priorityPoller = new TaskPoller(w, brain.GetRule(this.Wildcard), logger);
this.priorityPoller.CompletedDirs = poller.CompletedDirs;
this.priorityPoller.HashItemFound += new HashItemFoundHandler(OnPriorityItemFound);
this.priorityPoller.HashCompleted += new HashCompletedHandler(OnHashCompleted);
this.priorityRnr.RunWorkerAsync();
}
}
else
{
if (logger != null)
{
logger.Error("No Items found");
}
}
}
/// <summary>
/// Validate search requirements
/// </summary>
protected void ValidateRequest()
{
try{
SearchBrain.List.MaxPerFolder = (int)Size;
if (Size > MaxPerFolder)
{
if (logger != null)
{
logger.Warn("Warning: Requiring a hash size greater than allowed");
}
}
poller = new TaskPoller(this.Wildcard, brain.GetRule(this.Wildcard), logger);
poller.HashPollCompleted += new HashPollCompletedHandler(this.OnPollCompleted);
poller.HashItemFound += new HashItemFoundHandler(this.OnItemFound);
poller.HashCompleted += new HashCompletedHandler(this.OnHashCompleted);
}
catch (System.Exception e)
{
if (logger != null)
{
logger.Error(e);
}
}
}
/// <summary>
/// Start a search routine.
/// </summary>
/// <param name="keyword"></param>
/// <param name="type"></param>
public void BeginSearch(string keyword, WildCardType type)
{
mode = HashMode.Search;
bool isactive = false;
WildCardCollection w = new WildCardCollection(type, keyword);
if (priorityRnr != null && priorityPoller != null)
{
isactive = priorityPoller.IsActive(w);
if (priorityRnr.IsBusy && !isactive)
{
priorityRnr.CancelAsync();
}
}
if (!isactive)
{
this.priorityPoller = new TaskPoller(w, brain.Rules.GetRule(w), logger);
this.priorityPoller.HashItemFound += new HashItemFoundHandler(OnPriorityItemFound);
this.priorityPoller.HashCompleted += new HashCompletedHandler(OnHashCompleted);
this.priorityPoller.IgnoreDepthRestriction = true;
this.priorityRnr.RunWorkerAsync();
this.hashTimer.BeginTimer();
}
}
