private static void ExtractUniqueRows(MatrixIndexer data,
out Dictionary <EquatableArray <double>, List <int> > rowIndexMap, out double[][] reducedData)
{
var uniqueRows = new List <double[]>();
rowIndexMap = new Dictionary <EquatableArray <double>, List <int> >();
for (int row = 0; row < data.RowCount; row++)
{
var rowArray = data.GetRow(row).ToArray();
var rowEqArray = new EquatableArray <double>(rowArray);
if (!rowIndexMap.ContainsKey(rowEqArray))
{
rowIndexMap.Add(rowEqArray, new List <int>());
uniqueRows.Add(rowArray);
}
rowIndexMap[rowEqArray].Add(row);
}
reducedData = uniqueRows.ToArray();
}
public static void Evaluate(MergeAction action, Table targetTable, Row row, IOutputSink sink, Scope scope)
{
Row GetTargetRow() => row.Sources[EquatableArray.Of(scope.ExpandTableName(new[] { targetTable.Name }))];
switch (action)
{
case InsertMergeAction insert:
Evaluate(targetTable, insert.Columns, insert.Source, new RowArgument(row), sink, scope);
return;
case UpdateMergeAction update:
Evaluate(update.SetClauses, GetTargetRow(), row, sink, scope);
return;
case DeleteMergeAction _:
var r = GetTargetRow();
sink.Deleted(r, scope.Env);
targetTable.Rows.Remove(r);
return;
default:
throw FeatureNotSupportedException.Subtype(action);
}
}
