private void dataRefreshThread()
{
m_evtRefreshRunning.Set();
DatasetFactory factory = new DatasetFactory(m_factory);
Stopwatch sw = new Stopwatch();
try
{
sw.Start();
m_log.WriteLine("Starting refresh of " + m_nReplacementBatch.ToString("N0") + " items...");
List <Tuple <int, SimpleDatum> > rgReplace = new List <Tuple <int, SimpleDatum> >();
List <Tuple <int, DbItem> > rgItems = new List <Tuple <int, DbItem> >();
List <DbItem> rgDbItems = new List <DbItem>();
// Load the replacement set.
for (int i = 0; i < m_nReplacementBatch; i++)
{
int nIdx = m_random.Next(m_rgImages.Length);
int?nLabel = null;
if (m_rgImages[nIdx] != null)
{
nLabel = m_rgImages[nIdx].Label;
}
DbItem img = m_refreshManager.GetNextImageId(nLabel);
rgItems.Add(new Tuple <int, DbItem>(nIdx, img));
rgDbItems.Add(img);
if (sw.Elapsed.TotalMilliseconds > 1000)
{
if (m_evtRefreshCancel.WaitOne(0))
{
return;
}
sw.Restart();
}
}
// Get the Datums, ordered by ID.
List <SimpleDatum> rgImg = m_factory.GetImagesAt(rgDbItems, m_evtCancel);
if (rgImg == null)
{
return;
}
rgImg = rgImg.OrderBy(p => p.ImageID).ToList();
rgItems = rgItems.OrderBy(p => p.Item2.ID).ToList();
if (rgImg.Count != rgItems.Count)
{
List <Tuple <int, DbItem> > rgItems1 = new List <Tuple <int, DbItem> >();
int nIdx = 0;
for (int i = 0; i < rgImg.Count; i++)
{
while (nIdx < rgItems.Count && rgItems[nIdx].Item2.ID < rgImg[i].ImageID)
{
nIdx++;
}
if (rgItems[nIdx].Item2.ID == rgImg[i].ImageID)
{
rgItems1.Add(rgItems[nIdx]);
nIdx++;
}
}
rgItems = rgItems1;
}
for (int i = 0; i < rgItems.Count; i++)
{
rgReplace.Add(new Tuple <int, SimpleDatum>(rgItems[i].Item1, rgImg[i]));
}
lock (m_syncObj)
{
int nMismatchCount = 0;
for (int i = 0; i < rgReplace.Count; i++)
{
int nIdx = rgReplace[i].Item1;
if (m_rgImages[nIdx] != null && m_rgImages[nIdx].Label != rgReplace[i].Item2.Label)
{
nMismatchCount++;
}
else
{
m_rgImages[nIdx] = rgReplace[i].Item2;
}
}
if (nMismatchCount > 0)
{
m_log.WriteLine("WARNING: " + nMismatchCount.ToString("N0") + " label mismatches found!");
}
}
}
finally
{
m_evtRefreshRunning.Reset();
m_evtRefreshDone.Set();
}
}