Examples with KeyedGatherUngroupedTLink edu.iu.dsc.tws.tset.links.batch.KeyedGatherUngroupedTLink used on opensource projects

Example 1 with KeyedGatherUngroupedTLink

use of edu.iu.dsc.tws.tset.links.batch.KeyedGatherUngroupedTLink in project twister2 by DSC-SPIDAL.

the class KGatherUngroupedExample method execute.

@Override
public void execute(WorkerEnvironment workerEnv) {
    BatchEnvironment env = TSetEnvironment.initBatch(workerEnv);
    SourceTSet<Integer> src = dummySource(env, COUNT, PARALLELISM);
    KeyedGatherUngroupedTLink<Integer, Integer> klink = src.mapToTuple(i -> new Tuple<>(i % 4, i)).keyedGatherUngrouped();
    LOG.info("test foreach");
    klink.forEach((ApplyFunc<Tuple<Integer, Integer>>) data -> LOG.info(data.getKey() + " -> " + data.getValue()));
    LOG.info("test map");
    klink.map((MapFunc<Tuple<Integer, Integer>, String>) input -> input.getKey() + " -> " + input.getValue()).direct().forEach(s -> LOG.info("map: " + s));
    LOG.info("test compute");
    klink.compute((ComputeFunc<Iterator<Tuple<Integer, Integer>>, String>) input -> {
        StringBuilder sb = new StringBuilder();
        while (input.hasNext()) {
            Tuple<Integer, Integer> next = input.next();
            sb.append("[").append(next.getKey()).append("->").append(next.getValue()).append("]");
        }
        return sb.toString();
    }).direct().forEach(s -> LOG.info("compute: " + s));
    LOG.info("test computec");
    klink.compute((ComputeCollectorFunc<Iterator<Tuple<Integer, Integer>>, String>) (input, output) -> {
        while (input.hasNext()) {
            Tuple<Integer, Integer> next = input.next();
            output.collect(next.getKey() + " -> " + next.getValue() * 2);
        }
    }).direct().forEach(s -> LOG.info("computec: " + s));
}