Examples with RowSchema edu.iu.dsc.tws.api.tset.schema.RowSchema used on opensource projects

Example 1 with RowSchema

use of edu.iu.dsc.tws.api.tset.schema.RowSchema in project twister2 by DSC-SPIDAL.

the class PartitionExample method execute.

@Override
public void execute(WorkerEnvironment workerEnvironment) {
    BatchEnvironment env = TSetEnvironment.initBatch(workerEnvironment);
    List<TField> fieldList = new ArrayList<>();
    fieldList.add(new TField("first", MessageTypes.INTEGER));
    fieldList.add(new TField("second", MessageTypes.DOUBLE));
    RowSourceTSet src = env.createRowSource("row", new SourceFunc<Row>() {

        private int count = 0;

        @Override
        public boolean hasNext() {
            return count++ < 1000;
        }

        @Override
        public Row next() {
            return new TwoRow(1, 4.1);
        }
    }, 4).withSchema(new RowSchema(fieldList));
    BatchRowTLink partition = src.partition(new PartitionFunc<Row>() {

        private List<Integer> targets;

        private Random random;

        private int c = 0;

        private Map<Integer, Integer> counts = new HashMap<>();

        @Override
        public void prepare(Set<Integer> sources, Set<Integer> destinations) {
            targets = new ArrayList<>(destinations);
            random = new Random();
            for (int t : targets) {
                counts.put(t, 0);
            }
        }

        @Override
        public int partition(int sourceIndex, Row val) {
            int index = random.nextInt(targets.size());
            int count = counts.get(index);
            counts.put(index, count + 1);
            c++;
            if (c == 1000) {
                LOG.info("COUNTS " + counts);
            }
            return targets.get(index);
        }
    }, 4, 0);
    partition.forEach(new ApplyFunc<Row>() {

        private TSetContext ctx;

        private int count;

        @Override
        public void prepare(TSetContext context) {
            ctx = context;
        }

        @Override
        public void apply(Row data) {
            LOG.info(ctx.getIndex() + " Data " + data.get(0) + ", " + data.get(1) + ", count " + count++);
        }
    });
}

Example 2 with RowSchema

use of edu.iu.dsc.tws.api.tset.schema.RowSchema in project twister2 by DSC-SPIDAL.

the class RowBatchTLinkImpl method compute.

protected RowComputeTSet compute(String n, ComputeCollectorFunc<Iterator<Row>, Row> computeFunction) {
    RowComputeTSet set;
    if (n != null && !n.isEmpty()) {
        set = new RowComputeTSet(getTSetEnv(), n, computeFunction, getTargetParallelism(), (RowSchema) getSchema(), false);
    } else {
        set = new RowComputeTSet(getTSetEnv(), computeFunction, getTargetParallelism(), (RowSchema) getSchema(), false);
    }
    addChildToGraph(set);
    return set;
}

Example 3 with RowSchema

use of edu.iu.dsc.tws.api.tset.schema.RowSchema in project twister2 by DSC-SPIDAL.

the class RowPartitionTLink method compute.

protected RowComputeTSet compute(String n, ComputeCollectorFunc<Iterator<Row>, Row> computeFunction) {
    RowComputeTSet set;
    if (n != null && !n.isEmpty()) {
        set = new RowComputeTSet(getTSetEnv(), n, computeFunction, getTargetParallelism(), (RowSchema) getSchema(), true);
    } else {
        set = new RowComputeTSet(getTSetEnv(), computeFunction, getTargetParallelism(), (RowSchema) getSchema(), true);
    }
    addChildToGraph(set);
    return set;
}