private protected OneToOneTransformBase(IHost host, OneToOneColumn[] column,
IDataView input, Func <DataViewType, string> testType)
: base(host, input)
{
Host.CheckUserArg(Utils.Size(column) > 0, nameof(column));
Host.CheckValueOrNull(testType);
InputTranspose = Source as ITransposeDataView;
_bindings = Bindings.Create(this, column, Source.Schema, InputTranspose, testType);
Infos = _bindings.Infos;
Metadata = new MetadataDispatcher(Infos.Length);
}
private protected OneToOneTransformBase(IHost host, ModelLoadContext ctx,
IDataView input, Func <DataViewType, string> testType)
: base(host, input)
{
Host.CheckValue(ctx, nameof(ctx));
Host.CheckValueOrNull(testType);
InputTranspose = Source as ITransposeDataView;
_bindings = Bindings.Create(this, ctx, Source.Schema, InputTranspose, testType);
Infos = _bindings.Infos;
Metadata = new MetadataDispatcher(Infos.Length);
}
/// <summary>
/// This should really be private to MetadataDispatcher, but C#'s accessibility model doesn't
/// allow restricting to an outer class.
/// </summary>
internal Builder(MetadataDispatcher md, int index,
DataViewSchema schemaSrc = null, int indexSrc = -1, Func <string, int, bool> filterSrc = null)
{
Contracts.CheckValue(md, nameof(md));
Contracts.CheckParam(0 <= index && index < md.ColCount, nameof(index));
_index = index;
_md = md;
_info = _md.CreateInfo(schemaSrc, indexSrc, filterSrc);
var tmp = _md.GetColInfoOrNull(_index);
Contracts.Check(tmp == null, "Duplicate building of metadata");
}
private protected OneToOneTransformBase(IHostEnvironment env, string name, OneToOneTransformBase transform,
IDataView newInput, Func <DataViewType, string> checkType)
: base(env, name, newInput)
{
Host.CheckValueOrNull(checkType);
InputTranspose = Source as ITransposeDataView;
OneToOneColumn[] map = transform.Infos
.Select(x => new ColumnTmp
{
Name = x.Name,
Source = transform.Source.Schema[x.Source].Name,
})
.ToArray();
_bindings = Bindings.Create(this, map, newInput.Schema, InputTranspose, checkType);
Infos = _bindings.Infos;
Metadata = new MetadataDispatcher(Infos.Length);
}
