Method moveWithinPartition

src/jrd/recsrc/WindowedStream.cpp:1126–1144

Move in the window without pass partition boundaries.

// Move in the window without pass partition boundaries.
bool SlidingWindow::moveWithinPartition(SINT64 delta)
{
	const auto newPosition = savedPosition + delta;

	if (newPosition < partitionStart || newPosition > partitionEnd)
		return false;

	moved = delta != 0;

	stream->locate(tdbb, newPosition);

	if (!stream->getRecord(tdbb))
	{
		fb_assert(false);
		return false;
	}

	return true;
}

// Move in the window without pass frame boundaries.
bool SlidingWindow::moveWithinFrame(SINT64 delta)