protected override Delegate[] CreateGetters(IRow input, Func<int, bool> active, out Action disp)
{
Func<int, bool> activeInfos =
iinfo =>
{
int col = _bindings.MapIinfoToCol(iinfo);
return active(col);
};
disp = null;
var getters = new Delegate[_bindings.InfoCount];
var groupCurHelpers = new GroupCursorHelper[_bindings.SrcColsCount];
var resourcesExist = new bool?[Tokenizers.Length];
for (int iinfo = 0; iinfo < _bindings.Infos.Length; iinfo++)
{
if (!activeInfos(iinfo))
continue;
int groupId = _bindings.Infos[iinfo].GroupInfoId;
if (groupCurHelpers[groupId] == null)
groupCurHelpers[groupId] = new GroupCursorHelper(input, _bindings.GroupInfos[groupId], resourcesExist);
var groupState = groupCurHelpers[groupId];
ValueGetter<VBuffer<DvText>> fn;
if (_bindings.Infos[iinfo].IsTypes)
fn = (ref VBuffer<DvText> dst) => groupState.GetTypes(ref dst);
else
fn = (ref VBuffer<DvText> dst) => groupState.GetTokens(ref dst);
getters[iinfo] = fn;
}
return getters;
}
public RowCursor(NltTokenizeTransform parent, IRowCursor input, bool[] active)
: base(parent.Host, input)
{
Ch.AssertValue(parent._bindings);
Ch.AssertNonEmpty(parent._bindings.Infos);
Ch.AssertNonEmpty(parent._bindings.GroupInfos);
Ch.Assert(active == null || active.Length == parent._bindings.ColumnCount);
_bindings = parent._bindings;
_active = active;
var resourcesExist = new bool?[Tokenizers.Length];
var infos = parent._bindings.Infos;
_getters = new ValueGetter<VBuffer<DvText>>[infos.Length];
var groupCurHelpers = new GroupCursorHelper[_bindings.SrcColsCount];
for (int iinfo = 0; iinfo < infos.Length; iinfo++)
{
if (_active != null && !_active[_bindings.MapIinfoToCol(iinfo)])
continue;
int groupId = infos[iinfo].GroupInfoId;
if (groupCurHelpers[groupId] == null)
groupCurHelpers[groupId] = new GroupCursorHelper(input, _bindings.GroupInfos[groupId], resourcesExist);
var groupState = groupCurHelpers[groupId];
if (infos[iinfo].IsTypes)
_getters[iinfo] = groupState.GetTypes;
else
_getters[iinfo] = groupState.GetTokens;
}
}
