@ExplodeLoop
private void initFrame(VirtualFrame frame, Page page) {
for (FrameMapping frameMapping : mapping) {
frame.setObject(frameMapping.getFrameSlot(), getColumnSlow(page, frameMapping));
}
frame.setDouble(reduceNode.getSlot(), 0.0);
}
@Override
public Object execute(VirtualFrame frame) {
Page page = PageArguments.get(frame);
initFrame(frame, page);
for (int row = 0; row < page.getRowCount(); row++) {
frame.setInt(rowSlot, row);
try {
if (filterNode.executeBoolean(frame)) {
reduceNode.execute(frame);
}
} catch (UnexpectedResultException e) {
throw new IllegalStateException("not implemented yet: rewrite in reduce node");
}
}
try {
return frame.getDouble(reduceNode.getSlot());
} catch (FrameSlotTypeException e) {
throw new IllegalStateException("should not reach here");
}
}