public bool Next()
{
if (_termPositionsQueue.Size() == 0)
{
return(false);
}
_posList.clear();
_doc = _termPositionsQueue.Peek().Doc();
TermPositions tp;
do
{
tp = _termPositionsQueue.Peek();
for (int i = 0; i < tp.Freq(); i++)
{
_posList.add(tp.NextPosition());
}
if (tp.Next())
{
_termPositionsQueue.AdjustTop();
}
else
{
_termPositionsQueue.Pop();
tp.Close();
}
}while (_termPositionsQueue.Size() > 0 && _termPositionsQueue.Peek().Doc() == _doc);
_posList.sort();
_freq = _posList.size();
return(true);
}