IRowToRowMapper ITransformer.GetRowToRowMapper(DataViewSchema inputSchema)
{
_host.CheckValue(inputSchema, nameof(inputSchema));
var transform = ApplyTransformUtils.ApplyTransformToData(_host, (IDataTransform)_xf, new EmptyDataView(_host, inputSchema)) as IRowToRowMapper;
_host.Check(transform is IRowToRowMapper);
return(new CompositeRowToRowMapper(inputSchema, new[] { transform }));
}
public DataViewSchema GetOutputSchema(DataViewSchema inputSchema)
{
_host.CheckValue(inputSchema, nameof(inputSchema));
var dv = new EmptyDataView(_host, inputSchema);
var output = ApplyTransformUtils.ApplyTransformToData(_host, (IDataTransform)_xf, dv);
return(output.Schema);
}
public IDataView Transform(IDataView input) => ApplyTransformUtils.ApplyTransformToData(_host, (IDataTransform)_xf, input);