public double? FindMatchingParity( Currency source, Currency target )
{
var entry = Rows.SingleOrDefault( e => e.IsMatch( source, target ) );
if ( entry == null )
{
return null;
}
return entry.Value;
}
/// <summary>
/// Imports the given table into TOM.
/// <remarks>
/// The values of the table belong to the given origin and the given currency.
/// All rows are owned by the given stock. The table name identifies the datum
/// (and so the target table).
/// </remarks>
/// </summary>
public static void Import(this MauiX.IImport self, StockHandle stock, DataTable table, DatumOrigin origin, Maui.Entities.Currency currency)
{
// XXX: how to handle origin and currency if we allow "merged results"?
// then we actually already need to enrich the result table from the policy
// with origin and currency ...
var tomScripting = Engine.ServiceProvider.TomScripting();
var datum = table.TableName;
using (TransactionScope trans = new TransactionScope())
{
// we have a datum so we need the table now
var mgr = tomScripting.GetManager(datum);
if (mgr == null)
{
throw new Exception("No table found for datum: " + datum);
}
// get scoped data for owner id
long ownerId = stock.GetId(mgr.Schema.OwnerIdColumn);
ScopedTable output = mgr.Query(ownerId);
var resultColumns = table.Columns.ToSet();
var dateCol = resultColumns.FirstOrDefault(c => c.IsDateColumn());
// setting date and values depend on the format
Action <DataRow, DataRow> SetValues = null;
// default date setter: assume there is no date
Action <DataRow, DataRow> SetDate = (dest, src) => { };
if (dateCol != null)
{
SetDate = (dest, src) => dest.SetDate(mgr.Schema, src.GetDate(dateCol.ColumnName));
}
var datumCols = output.Schema.DatumColumns
.Where(col => resultColumns.Any(c => c.ColumnName.Equals(col.ColumnName, StringComparison.OrdinalIgnoreCase)));
SetValues = (dest, src) =>
{
foreach (var col in datumCols)
{
dest[col.ColumnName] = src[col.ColumnName];
}
};
// ok - now import the data
DateIdCache <long> cache = new DateIdCache <long>();
if (output.Schema.DateColumn != null)
{
cache.Fill(output);
}
foreach (DataRow row in table.Rows)
{
var newRow = output.NewRow();
// set owner id
newRow[output.Schema.OwnerIdColumn] = ownerId;
// a "datum" always need a date
SetDate(newRow, row);
// set values
SetValues(newRow, row);
// set currency (the value is of no use when there is no currency)
// -> currency might implicitly available through TradedStock->StockExchange
if (output.Schema.CurrencyColumn != null)
{
newRow[output.Schema.CurrencyColumn] = currency.Id;
}
// set origin (optional)
if (output.Schema.OriginColumn != null)
{
newRow[output.Schema.OriginColumn] = origin.Id;
}
if (output.Schema.DateColumn != null && cache.Contains(newRow.GetDate(output.Schema)))
{
long id = cache[newRow.GetDate(output.Schema)];
output.Update(id, newRow);
}
else
{
output.Add(newRow);
}
}
trans.Complete();
}
}
public bool IsMatch( Currency source, Currency target )
{
return Source.EqualsI( source.Name ) && Target.EqualsI( target.Name );
}