DataViewRow ISchemaBoundRowMapper.GetRow(DataViewRow input, IEnumerable <DataViewSchema.Column> activeColumns)
{
Contracts.AssertValue(input);
Contracts.AssertValue(activeColumns);
var totalColumnsCount = 1 + _outputGenericSchema.Count;
var getters = new Delegate[totalColumnsCount];
if (activeColumns.Select(c => c.Index).Contains(_outputGenericSchema.Count))
{
getters[totalColumnsCount - 1] = _parent.Stringify
? _parent.GetTextContributionGetter(input, FeatureColumn.Index, _slotNames)
: _parent.GetContributionGetter(input, FeatureColumn.Index);
}
var genericRow = _genericRowMapper.GetRow(input, activeColumns);
for (var i = 0; i < _outputGenericSchema.Count; i++)
{
if (genericRow.IsColumnActive(genericRow.Schema[i]))
{
getters[i] = RowCursorUtils.GetGetterAsDelegate(genericRow, i);
}
}
return(new SimpleRow(OutputSchema, genericRow, getters));
}
public DataViewRow GetRow(DataViewRow input, Func <int, bool> active)
{
Contracts.AssertValue(input);
Contracts.AssertValue(active);
var totalColumnsCount = 1 + _outputGenericSchema.Count;
var getters = new Delegate[totalColumnsCount];
if (active(totalColumnsCount - 1))
{
getters[totalColumnsCount - 1] = _parent.Stringify
? _parent.GetTextContributionGetter(input, FeatureColumn.Index, _slotNames)
: _parent.GetContributionGetter(input, FeatureColumn.Index);
}
var genericRow = _genericRowMapper.GetRow(input, GetGenericPredicate(active));
for (var i = 0; i < _outputGenericSchema.Count; i++)
{
if (genericRow.IsColumnActive(i))
{
getters[i] = RowCursorUtils.GetGetterAsDelegate(genericRow, i);
}
}
return(new SimpleRow(OutputSchema, genericRow, getters));
}