public TrendIndex GetTrendIndex(string sector, PriceBarSize priceBarSize, int swingPointBarCount, bool create = true)
{
using (var db = new IndexDatabaseContext())
{
var ret = (from index in db.TrendIndices.AsNoTracking().Include(x => x.IndexEntries)
where index.IndexName == sector
where index.IndexSwingpointBarCount == swingPointBarCount
where index.TrendPriceBarSize == priceBarSize
select index).FirstOrDefault();
if (ret != null || !create)
return ret;
db.TrendIndices.Add(new TrendIndex(sector, swingPointBarCount, priceBarSize));
db.SaveChanges();
ret = (from index in db.TrendIndices.AsNoTracking().Include(x => x.IndexEntries)
where index.IndexName == sector
where index.IndexSwingpointBarCount == swingPointBarCount
where index.TrendPriceBarSize == priceBarSize
select index).FirstOrDefault();
if (ret == null)
Console.WriteLine();
return ret;
}
}
public void SetTrendIndex(TrendIndex trendIndex)
{
if (trendIndex == null)
return;
using (var db = new IndexDatabaseContext())
{
// Get the index entity stored in the database
var dbIndex = (from index in db.TrendIndices
where index.IndexName == trendIndex.IndexName
//where index.IndexSwingpointBarCount == trendIndex.IndexSwingpointBarCount
//where index.TrendPriceBarSize == trendIndex.TrendPriceBarSize
select index).FirstOrDefault();
if (dbIndex == null)
{
throw new SecurityNotFoundException() { message = "Attempted to reattach non-existent index to database" };
}
// Update scalar properties of Security
db.Entry(dbIndex).CurrentValues.SetValues(trendIndex);
foreach (var newIndexDay in trendIndex.IndexEntries)
{
// Find existing bar if one exists for this date
var currentIndexDay = dbIndex.IndexEntries.SingleOrDefault(x => x == newIndexDay);
if (currentIndexDay != null)
{
// Update bars that are in the new bar collection
db.Entry(currentIndexDay).CurrentValues.SetValues(newIndexDay);
}
else
{
// Insert new bars
newIndexDay.Parent = dbIndex;
dbIndex.IndexEntries.Add(newIndexDay);
}
}
db.SaveChanges();
}
}