Examples with Values org.apache.heron.api.tuple.Values used on opensource projects

Example 21 with Values

use of org.apache.heron.api.tuple.Values in project heron by twitter.

the class ReduceByKeyOperator method execute.

@SuppressWarnings("unchecked")
@Override
public void execute(Tuple tuple) {
    R obj = (R) tuple.getValue(0);
    K key = keyExtractor.apply(obj);
    T value = valueExtractor.apply(obj);
    T newValue;
    if (reduceMap.containsKey(key)) {
        newValue = reduceFn.apply(reduceMap.get(key), value);
    } else {
        newValue = value;
    }
    reduceMap.put(key, newValue);
    collector.emit(new Values(new KeyValue<K, T>(key, newValue)));
    collector.ack(tuple);
}

Example 22 with Values

use of org.apache.heron.api.tuple.Values in project heron by twitter.

the class SplitOperator method execute.

@SuppressWarnings("unchecked")
@Override
public void execute(Tuple tuple) {
    R obj = (R) tuple.getValue(0);
    for (Map.Entry<String, SerializablePredicate<R>> entry : splitFns.entrySet()) {
        if (entry.getValue().test(obj)) {
            collector.emit(entry.getKey(), new Values(obj));
        }
    }
    collector.ack(tuple);
}

Example 23 with Values

use of org.apache.heron.api.tuple.Values in project heron by twitter.

the class UnionOperator method execute.

@SuppressWarnings("unchecked")
@Override
public void execute(Tuple tuple) {
    I obj = (I) tuple.getValue(0);
    collector.emit(new Values(obj));
    collector.ack(tuple);
}

Example 24 with Values

use of org.apache.heron.api.tuple.Values in project heron by twitter.

the class FlatMapOperator method execute.

@SuppressWarnings("unchecked")
@Override
public void execute(Tuple tuple) {
    R obj = (R) tuple.getValue(0);
    Iterable<? extends T> result = flatMapFn.apply(obj);
    for (T o : result) {
        collector.emit(new Values(o));
    }
    collector.ack(tuple);
}

Example 25 with Values

use of org.apache.heron.api.tuple.Values in project heron by twitter.

the class SlidingWindowSumBolt method execute.

@Override
public void execute(TupleWindow inputWindow) {
    /*
             * The inputWindow gives a view of
             * (a) all the events in the window
             * (b) events that expired since last activation of the window
             * (c) events that newly arrived since last activation of the window
             */
    List<Tuple> tuplesInWindow = inputWindow.get();
    List<Tuple> newTuples = inputWindow.getNew();
    List<Tuple> expiredTuples = inputWindow.getExpired();
    LOG.fine("Events in current window: " + tuplesInWindow.size());
    /*
             * Instead of iterating over all the tuples in the window to compute
             * the sum, the values for the new events are added and old events are
             * subtracted. Similar optimizations might be possible in other
             * windowing computations.
             */
    for (Tuple tuple : newTuples) {
        sum += (int) tuple.getValue(0);
    }
    for (Tuple tuple : expiredTuples) {
        sum -= (int) tuple.getValue(0);
    }
    collector.emit(new Values(sum));
}