@Override
public void processTuple(Tuple tuple) {
try {
T reduceValue = reduceList.get(slideInWindow);
T value = (T) tuple.getValue(0);
if (null == reduceValue) reduceList.set(slideInWindow, value);
else {
reduceList.set(slideInWindow, fun.reduce(reduceValue, value));
}
} catch (Exception e) {
logger.error(e.toString());
}
}
@Override
public void processSlide(BasicOutputCollector collector) {
try {
T reduceValue = null;
// TODO: implement window data structure with tree, no need to for loop
for (T t : reduceList) {
if (null == reduceValue) {
reduceValue = t;
} else {
reduceValue = fun.reduce(reduceValue, t);
}
}
collector.emit(new Values(slideIndexInBuffer, reduceValue));
// clear data
reduceList.set((slideInWindow + 1) % WINDOW_SIZE, null);
} catch (Exception e) {
logger.error(e.toString());
}
}