Method internalGetRecord

src/jrd/recsrc/BitmapTableScan.cpp:84–123

}

bool BitmapTableScan::internalGetRecord(thread_db* tdbb) const
{
	JRD_reschedule(tdbb);

	Request* const request = tdbb->getRequest();
	record_param* const rpb = &request->req_rpb[m_stream];
	Impure* const impure = request->getImpure<Impure>(m_impure);

	if (!(impure->irsb_flags & irsb_open))
	{
		rpb->rpb_number.setValid(false);
		return false;
	}

	RecordBitmap** pbitmap = impure->irsb_bitmap;
	RecordBitmap* bitmap;

	if (!pbitmap || !(bitmap = *pbitmap))
	{
		rpb->rpb_number.setValid(false);
		return false;
	}

	if (rpb->rpb_number.isBof() ? bitmap->getFirst() : bitmap->getNext())
	{
		do
		{
			rpb->rpb_number.setValue(bitmap->current());

			if (VIO_get(tdbb, rpb, request->req_transaction, request->req_pool))
			{
				rpb->rpb_number.setValid(true);
				return true;
			}
		} while (bitmap->getNext());
	}

	rpb->rpb_number.setValid(false);
	return false;
}

void BitmapTableScan::getChildren(Array<const RecordSource*>& children) const
{