protected override DataViewRowCursor GetRowCursorCore(IEnumerable <DataViewSchema.Column> columnsNeeded, Random rand = null)
{
var srcCursor = _transform.GetRowCursor(columnsNeeded, rand);
var clone = (SequentialDataTransform)MemberwiseClone();
clone.CloneStateInMapper();
return(new Cursor(Host, clone, srcCursor));
}
protected override IRowCursor GetRowCursorCore(Func <int, bool> predicate, Random rand = null)
{
var srcCursor = _transform.GetRowCursor(predicate, rand);
var clone = (SequentialDataTransform)MemberwiseClone();
clone.CloneStateInMapper();
return(new Cursor(Host, clone, srcCursor));
}
protected override DataViewRowCursor GetRowCursorCore(IEnumerable <DataViewSchema.Column> columnsNeeded, Random rand = null)
{
if (_transform == null)
{
lock (_lock)
if (_transform == null)
{
_transform = CreateTemplatedTransform();
}
}
Host.AssertValue(_transform, "_transform");
Host.AssertValue(_trend, "_trend");
return(_transform.GetRowCursor(columnsNeeded, rand));
}
protected override RowCursor GetRowCursorCore(Func <int, bool> needCol, Random rand = null)
{
if (_transform == null)
{
lock (_lock)
if (_transform == null)
{
_transform = CreateTemplatedTransform();
}
}
Host.AssertValue(_transform, "_transform");
Host.AssertValue(_trend, "_trend");
return(_transform.GetRowCursor(needCol, rand));
}
public RowCursor GetRowCursor(Func <int, bool> predicate, Random rand = null)
{
// Fun part we'll see later.
_host.AssertValue(_transform, "_transform");
return(_transform.GetRowCursor(predicate, rand));
}
protected override IRowCursor GetRowCursorCore(Func <int, bool> predicate, IRandom rand = null)
{
Host.AssertValue(_pipedTransform, "_pipedTransform");
return(_pipedTransform.GetRowCursor(predicate, rand));
}
protected override DataViewRowCursor GetRowCursorCore(IEnumerable <DataViewSchema.Column> columnsNeeded, Random rand = null)
{
Host.AssertValue(_pipedTransform, "_pipedTransform");
return(_pipedTransform.GetRowCursor(columnsNeeded, rand));
}
protected override IRowCursor GetRowCursorCore(Func <int, bool> predicate, IRandom rand = null)
{
var srcCursor = _transform.GetRowCursor(predicate, rand);
return(new Cursor(Host, this, srcCursor));
}
public DataViewRowCursor GetRowCursor(IEnumerable <DataViewSchema.Column> columnsNeeded, Random rand = null)
{
// Fun part we'll see later.
_host.AssertValue(_transform, "_transform");
return(_transform.GetRowCursor(columnsNeeded, rand));
}