@Override
public <SuppliedValue, Result> Result aggregate(
Supplier<K, V, SuppliedValue> supplier,
Aggregation<K, SuppliedValue, Result> aggregation,
JobTracker jobTracker) {
try {
Preconditions.isNotNull(jobTracker, "jobTracker");
KeyValueSource<K, V> keyValueSource = KeyValueSource.fromMultiMap(this);
Job<K, V> job = jobTracker.newJob(keyValueSource);
Mapper mapper = aggregation.getMapper(supplier);
CombinerFactory combinerFactory = aggregation.getCombinerFactory();
ReducerFactory reducerFactory = aggregation.getReducerFactory();
Collator collator = aggregation.getCollator();
MappingJob mappingJob = job.mapper(mapper);
ReducingSubmittableJob reducingJob;
if (combinerFactory != null) {
reducingJob = mappingJob.combiner(combinerFactory).reducer(reducerFactory);
} else {
reducingJob = mappingJob.reducer(reducerFactory);
}
ICompletableFuture<Result> future = reducingJob.submit(collator);
return future.get();
} catch (Exception e) {
throw new HazelcastException(e);
}
}