@Test
public void aggregateInPlaceByWithBatchSize() {
MutableList<Integer> list =
LazyIterate.adapt(Collections.nCopies(1000, 1))
.concatenate(Collections.nCopies(2000, 2))
.concatenate(Collections.nCopies(3000, 3))
.toList()
.shuffleThis();
MapIterable<String, AtomicInteger> aggregation =
ParallelIterate.aggregateInPlaceBy(
list, String::valueOf, ATOMIC_INTEGER_NEW, AtomicInteger::addAndGet, 100);
Assert.assertEquals(1000, aggregation.get("1").intValue());
Assert.assertEquals(4000, aggregation.get("2").intValue());
Assert.assertEquals(9000, aggregation.get("3").intValue());
}
public LazyIterable<T> asLazy() {
return LazyIterate.adapt(this);
}
public RichIterable<V> valuesView() {
return LazyIterate.empty();
}
public RichIterable<Pair<K, V>> keyValuesView() {
return LazyIterate.empty();
}
public RichIterable<K> keysView() {
return LazyIterate.empty();
}
public RichIterable<Pair<K, V>> keyValuesView() {
return LazyIterate.adapt(this.entrySet())
.collect(AbstractImmutableEntry.<K, V>getPairFunction());
}
@Override
public RichIterable<V> valuesView() {
return LazyIterate.adapt(this.values());
}
@Override
public RichIterable<K> keysView() {
return LazyIterate.adapt(this.keySet());
}
@Override
protected <T> LazyIterable<T> newWith(T... elements) {
return LazyIterate.drop(FastList.newListWith(elements), 0);
}