internal Column(string name, VectorKind vecKind, DataViewType itemType, bool isKey, SchemaShape annotations = null)
{
Contracts.CheckNonEmpty(name, nameof(name));
Contracts.CheckValueOrNull(annotations);
Contracts.CheckParam(!(itemType is KeyType), nameof(itemType), "Item type cannot be a key");
Contracts.CheckParam(!(itemType is VectorType), nameof(itemType), "Item type cannot be a vector");
Contracts.CheckParam(!isKey || KeyType.IsValidDataType(itemType.RawType), nameof(itemType), "The item type must be valid for a key");
Name = name;
Kind = vecKind;
ItemType = itemType;
IsKey = isKey;
Annotations = annotations ?? _empty;
}
public SchemaShape GetOutputSchema(SchemaShape inputSchema) => _est.GetOutputSchema(inputSchema);
