Examples with GroupedAggregator org.apache.storm.trident.operation.impl.GroupedAggregator used on opensource projects

Example 1 with GroupedAggregator

use of org.apache.storm.trident.operation.impl.GroupedAggregator in project storm by apache.

the class GroupedStream method partitionAggregate.

@Override
public IAggregatableStream partitionAggregate(Fields inputFields, Aggregator agg, Fields functionFields) {
    Aggregator groupedAgg = new GroupedAggregator(agg, _groupFields, inputFields, functionFields.size());
    Fields allInFields = TridentUtils.fieldsUnion(_groupFields, inputFields);
    Fields allOutFields = TridentUtils.fieldsConcat(_groupFields, functionFields);
    Stream s = _stream.partitionAggregate(allInFields, groupedAgg, allOutFields);
    return new GroupedStream(s, _groupFields);
}