internal static void GetColumnTypeShape(DataViewType type,
out Column.VectorKind vecKind,
out DataViewType itemType,
out bool isKey)
{
if (type is VectorType vectorType)
{
if (vectorType.IsKnownSize)
{
vecKind = Column.VectorKind.Vector;
}
else
{
vecKind = Column.VectorKind.VariableVector;
}
itemType = vectorType.ItemType;
}
else
{
vecKind = Column.VectorKind.Scalar;
itemType = type;
}
isKey = itemType is KeyType;
if (isKey)
{
itemType = ColumnTypeExtensions.PrimitiveTypeFromType(itemType.RawType);
}
}
protected override DataViewSchema.DetachedColumn[] GetOutputColumnsCore()
{
var columns = new List <DataViewSchema.DetachedColumn>();
foreach (DateTimeEstimator.ColumnsProduced column in Enum.GetValues(typeof(DateTimeEstimator.ColumnsProduced)))
{
columns.Add(new DataViewSchema.DetachedColumn(_parent._column.Prefix + column.ToString(),
ColumnTypeExtensions.PrimitiveTypeFromType(column.GetRawColumnType())));
}
return(columns.ToArray());
}
public SchemaShape GetOutputSchema(SchemaShape inputSchema)
{
var columns = inputSchema.ToDictionary(x => x.Name);
foreach (ColumnsProduced column in Enum.GetValues(typeof(ColumnsProduced)))
{
columns[_options.Prefix + column.ToString()] = new SchemaShape.Column(_options.Prefix + column.ToString(), SchemaShape.Column.VectorKind.Scalar,
ColumnTypeExtensions.PrimitiveTypeFromType(column.GetRawColumnType()), false, null);
}
return(new SchemaShape(columns.Values));
}
protected override DataViewSchema.DetachedColumn[] GetOutputColumnsCore()
{
return(_parent._columns.Select(x => new DataViewSchema.DetachedColumn(x.Name, ColumnTypeExtensions.PrimitiveTypeFromType(x.Type))).ToArray());
}