/** {@inheritDoc} */
@Nullable
@Override
public Map<String, Collection<?>> run(GridStreamerContext ctx, Collection<Quote> quotes)
throws GridException {
GridStreamerWindow win = ctx.window("stage1");
// Add numbers to window.
win.enqueueAll(quotes);
Collection<Quote> polled = win.pollEvictedBatch();
if (!polled.isEmpty()) {
Map<String, Bar> map = new HashMap<>();
for (Quote quote : polled) {
String symbol = quote.symbol();
Bar bar = map.get(symbol);
if (bar == null) map.put(symbol, bar = new Bar(symbol));
bar.update(quote.price());
}
return Collections.<String, Collection<?>>singletonMap(ctx.nextStageName(), map.values());
}
return null;
}
