public IList <MatchingPair> GetMatchingPairs(ICollection <LostAndFoundIndexedItem> items)
{
var findings = items.Where(item => item.ItemType == LostAndFoundIndexedItem.Type.Finding).ToArray();
var lockObject = new object();
var resultList = new List <MatchingPair>(500000);
Parallel.ForEach <LostAndFoundIndexedItem, ICollection <MatchingPair> >(
items.Where(item => item.MatchedRecordID != null && item.ItemType == LostAndFoundIndexedItem.Type.Loss), new ParallelOptions {
MaxDegreeOfParallelism = 6
},
() => new LinkedList <MatchingPair>(),
(loss, loopState, list) =>
{
var matches = findings.Where(i => i.RecordID == loss.MatchedRecordID).ToArray();
if (loopState.ShouldExitCurrentIteration)
{
return(list);
}
if (matches.Length > 1)
{
var description = loss.Description;
if (description.Length > 100)
{
description = description.Substring(0, 100);
}
Logger.WarnFormat("Finding with ID {0} and Description {1} found multiple times", loss.MatchedRecordID, description);
}
var matchedFinding = matches.FirstOrDefault();
if (matchedFinding != null)
{
var pair = _mapper.MapMatch(loss, matchedFinding);
list.Add(pair);
}
return(list);
},
list =>
{
lock (lockObject)
{
resultList.AddRange(list);
if (resultList.Count % 1000 < (resultList.Count - list.Count) % 1000)
{
Logger.DebugFormat("{0} items matched", resultList.Count);
}
}
}
);
return(resultList);
}
