/*
* Copyright 2015 Goldman Sachs.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.gs.collections.impl.parallel;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collection;
import java.util.Collections;
import java.util.LinkedList;
import java.util.List;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import java.util.concurrent.atomic.AtomicInteger;
import com.gs.collections.api.RichIterable;
import com.gs.collections.api.bag.Bag;
import com.gs.collections.api.block.function.Function;
import com.gs.collections.api.block.function.Function0;
import com.gs.collections.api.block.function.Function2;
import com.gs.collections.api.block.predicate.Predicate;
import com.gs.collections.api.block.procedure.Procedure;
import com.gs.collections.api.block.procedure.Procedure2;
import com.gs.collections.api.block.procedure.primitive.ObjectIntProcedure;
import com.gs.collections.api.list.ImmutableList;
import com.gs.collections.api.list.MutableList;
import com.gs.collections.api.map.MapIterable;
import com.gs.collections.api.map.MutableMap;
import com.gs.collections.api.multimap.Multimap;
import com.gs.collections.api.set.MutableSet;
import com.gs.collections.impl.bag.mutable.HashBag;
import com.gs.collections.impl.block.factory.Functions;
import com.gs.collections.impl.block.factory.HashingStrategies;
import com.gs.collections.impl.block.factory.Predicates;
import com.gs.collections.impl.block.factory.Procedures;
import com.gs.collections.impl.factory.Lists;
import com.gs.collections.impl.list.Interval;
import com.gs.collections.impl.list.mutable.ArrayListAdapter;
import com.gs.collections.impl.list.mutable.CompositeFastList;
import com.gs.collections.impl.list.mutable.FastList;
import com.gs.collections.impl.list.mutable.ListAdapter;
import com.gs.collections.impl.map.mutable.UnifiedMap;
import com.gs.collections.impl.multimap.bag.HashBagMultimap;
import com.gs.collections.impl.multimap.bag.MultiReaderHashBagMultimap;
import com.gs.collections.impl.multimap.bag.SynchronizedPutHashBagMultimap;
import com.gs.collections.impl.multimap.list.MultiReaderFastListMultimap;
import com.gs.collections.impl.multimap.set.MultiReaderUnifiedSetMultimap;
import com.gs.collections.impl.multimap.set.SynchronizedPutUnifiedSetMultimap;
import com.gs.collections.impl.set.mutable.MultiReaderUnifiedSet;
import com.gs.collections.impl.set.mutable.UnifiedSet;
import com.gs.collections.impl.set.strategy.mutable.UnifiedSetWithHashingStrategy;
import com.gs.collections.impl.test.Verify;
import com.gs.collections.impl.utility.ArrayIterate;
import com.gs.collections.impl.utility.LazyIterate;
import org.junit.After;
import org.junit.Assert;
import org.junit.Before;
import org.junit.Test;
public class ParallelIterateAcceptanceTest
{
private static final Procedure<Integer> EXCEPTION_PROCEDURE = value -> {
throw new RuntimeException("Thread death on its way!");
};
private static final ObjectIntProcedure<Integer> EXCEPTION_OBJECT_INT_PROCEDURE = (object, index) -> {
throw new RuntimeException("Thread death on its way!");
};
private static final Function<Integer, Collection<String>> INT_TO_TWO_STRINGS = integer -> Lists.fixedSize.of(integer.toString(), integer.toString());
private static final Function0<AtomicInteger> ATOMIC_INTEGER_NEW = AtomicInteger::new;
private static final Function<Integer, String> EVEN_OR_ODD = value -> value % 2 == 0 ? "Even" : "Odd";
private int count;
private final MutableSet<String> threadNames = MultiReaderUnifiedSet.newSet();
private ImmutableList<RichIterable<Integer>> iterables;
private final ExecutorService executor = Executors.newFixedThreadPool(2);
@Before
public void setUp()
{
Interval interval = Interval.oneTo(20000);
this.iterables = Lists.immutable.of(
interval.toList(),
interval.toList().asUnmodifiable(),
interval.toList().asSynchronized(),
interval.toList().toImmutable(),
interval.toSet(),
interval.toSet().asUnmodifiable(),
interval.toSet().asSynchronized(),
interval.toSet().toImmutable(),
interval.toBag(),
interval.toBag().asUnmodifiable(),
interval.toBag().asSynchronized(),
interval.toBag().toImmutable(),
interval.toSortedSet(),
interval.toSortedSet().asUnmodifiable(),
interval.toSortedSet().asSynchronized(),
interval.toSortedSet().toImmutable(),
interval.toMap(Functions.<Integer>getPassThru(), Functions.<Integer>getPassThru()),
interval.toMap(Functions.<Integer>getPassThru(), Functions.<Integer>getPassThru()).asUnmodifiable(),
interval.toMap(Functions.<Integer>getPassThru(), Functions.<Integer>getPassThru()).asSynchronized(),
interval.toMap(Functions.<Integer>getPassThru(), Functions.<Integer>getPassThru()).toImmutable(),
ArrayListAdapter.<Integer>newList().withAll(interval),
ArrayListAdapter.<Integer>newList().withAll(interval).asUnmodifiable(),
ArrayListAdapter.<Integer>newList().withAll(interval).asSynchronized(),
new CompositeFastList<Integer>().withAll(interval.toList()),
new CompositeFastList<Integer>().withAll(interval.toList()).asUnmodifiable(),
new CompositeFastList<Integer>().withAll(interval.toList()).asSynchronized(),
new CompositeFastList<Integer>().withAll(interval.toList()).toImmutable(),
ListAdapter.adapt(new LinkedList<Integer>()).withAll(interval),
ListAdapter.adapt(new LinkedList<Integer>()).withAll(interval).asUnmodifiable(),
ListAdapter.adapt(new LinkedList<Integer>()).withAll(interval).asSynchronized(),
UnifiedSetWithHashingStrategy.<Integer>newSet(HashingStrategies.defaultStrategy()).withAll(interval),
UnifiedSetWithHashingStrategy.<Integer>newSet(HashingStrategies.defaultStrategy()).withAll(interval).asUnmodifiable(),
UnifiedSetWithHashingStrategy.<Integer>newSet(HashingStrategies.defaultStrategy()).withAll(interval).asSynchronized(),
UnifiedSetWithHashingStrategy.<Integer>newSet(HashingStrategies.defaultStrategy()).withAll(interval).toImmutable());
}
@After
public void tearDown()
{
this.executor.shutdown();
}
@Test
public void testOneLevelCall()
{
new RecursiveProcedure().value(1);
synchronized (this)
{
Assert.assertEquals("all iterations completed", 20000, this.count);
}
}
@Test
public void testNestedCall()
{
new RecursiveProcedure().value(2);
synchronized (this)
{
Assert.assertEquals("all iterations completed", 419980, this.count);
}
Assert.assertTrue("uses multiple threads", this.threadNames.size() > 1);
}
@Test
public void testForEachUsingSet()
{
//Tests the default batch size calculations
IntegerSum sum = new IntegerSum(0);
MutableSet<Integer> set = Interval.toSet(1, 10000);
ParallelIterate.forEach(set, new SumProcedure(sum), new SumCombiner(sum));
Assert.assertEquals(50005000, sum.getSum());
//Testing batch size 1
IntegerSum sum2 = new IntegerSum(0);
UnifiedSet<Integer> set2 = UnifiedSet.newSet(Interval.oneTo(100));
ParallelIterate.forEach(set2, new SumProcedure(sum2), new SumCombiner(sum2), 1, set2.getBatchCount(set2.size()));
Assert.assertEquals(5050, sum2.getSum());
//Testing an uneven batch size
IntegerSum sum3 = new IntegerSum(0);
UnifiedSet<Integer> set3 = UnifiedSet.newSet(Interval.oneTo(100));
ParallelIterate.forEach(set3, new SumProcedure(sum3), new SumCombiner(sum3), 1, set3.getBatchCount(13));
Assert.assertEquals(5050, sum3.getSum());
//Testing divideByZero exception by passing 1 as batchSize
IntegerSum sum4 = new IntegerSum(0);
UnifiedSet<Integer> set4 = UnifiedSet.newSet(Interval.oneTo(100));
ParallelIterate.forEach(set4, new SumProcedure(sum4), new SumCombiner(sum4), 1);
Assert.assertEquals(5050, sum4.getSum());
}
@Test
public void testForEachUsingMap()
{
//Test the default batch size calculations
IntegerSum sum1 = new IntegerSum(0);
MutableMap<String, Integer> map1 = Interval.fromTo(1, 10000).toMap(String::valueOf, Functions.getIntegerPassThru());
ParallelIterate.forEach(map1, new SumProcedure(sum1), new SumCombiner(sum1));
Assert.assertEquals(50005000, sum1.getSum());
//Testing batch size 1
IntegerSum sum2 = new IntegerSum(0);
UnifiedMap<String, Integer> map2 = (UnifiedMap<String, Integer>) Interval.fromTo(1, 100).toMap(String::valueOf, Functions.getIntegerPassThru());
ParallelIterate.forEach(map2, new SumProcedure(sum2), new SumCombiner(sum2), 1, map2.getBatchCount(map2.size()));
Assert.assertEquals(5050, sum2.getSum());
//Testing an uneven batch size
IntegerSum sum3 = new IntegerSum(0);
UnifiedMap<String, Integer> set3 = (UnifiedMap<String, Integer>) Interval.fromTo(1, 100).toMap(String::valueOf, Functions.getIntegerPassThru());
ParallelIterate.forEach(set3, new SumProcedure(sum3), new SumCombiner(sum3), 1, set3.getBatchCount(13));
Assert.assertEquals(5050, sum3.getSum());
}
@Test
public void testForEach()
{
IntegerSum sum1 = new IntegerSum(0);
List<Integer> list1 = ParallelIterateAcceptanceTest.createIntegerList(16);
ParallelIterate.forEach(list1, new SumProcedure(sum1), new SumCombiner(sum1), 1, list1.size() / 2);
Assert.assertEquals(16, sum1.getSum());
IntegerSum sum2 = new IntegerSum(0);
List<Integer> list2 = ParallelIterateAcceptanceTest.createIntegerList(7);
ParallelIterate.forEach(list2, new SumProcedure(sum2), new SumCombiner(sum2));
Assert.assertEquals(7, sum2.getSum());
IntegerSum sum3 = new IntegerSum(0);
List<Integer> list3 = ParallelIterateAcceptanceTest.createIntegerList(15);
ParallelIterate.forEach(list3, new SumProcedure(sum3), new SumCombiner(sum3), 1, list3.size() / 2);
Assert.assertEquals(15, sum3.getSum());
IntegerSum sum4 = new IntegerSum(0);
List<Integer> list4 = ParallelIterateAcceptanceTest.createIntegerList(35);
ParallelIterate.forEach(list4, new SumProcedure(sum4), new SumCombiner(sum4));
Assert.assertEquals(35, sum4.getSum());
IntegerSum sum5 = new IntegerSum(0);
MutableList<Integer> list5 = FastList.newList(list4);
ParallelIterate.forEach(list5, new SumProcedure(sum5), new SumCombiner(sum5));
Assert.assertEquals(35, sum5.getSum());
IntegerSum sum6 = new IntegerSum(0);
List<Integer> list6 = ParallelIterateAcceptanceTest.createIntegerList(40);
ParallelIterate.forEach(list6, new SumProcedure(sum6), new SumCombiner(sum6), 1, list6.size() / 2);
Assert.assertEquals(40, sum6.getSum());
IntegerSum sum7 = new IntegerSum(0);
MutableList<Integer> list7 = FastList.newList(list6);
ParallelIterate.forEach(list7, new SumProcedure(sum7), new SumCombiner(sum7), 1, list6.size() / 2);
Assert.assertEquals(40, sum7.getSum());
}
@Test
public void testForEachImmutableList()
{
IntegerSum sum1 = new IntegerSum(0);
ImmutableList<Integer> list1 = Lists.immutable.ofAll(ParallelIterateAcceptanceTest.createIntegerList(16));
ParallelIterate.forEach(list1, new SumProcedure(sum1), new SumCombiner(sum1), 1, list1.size() / 2);
Assert.assertEquals(16, sum1.getSum());
IntegerSum sum2 = new IntegerSum(0);
ImmutableList<Integer> list2 = Lists.immutable.ofAll(ParallelIterateAcceptanceTest.createIntegerList(7));
ParallelIterate.forEach(list2, new SumProcedure(sum2), new SumCombiner(sum2));
Assert.assertEquals(7, sum2.getSum());
IntegerSum sum3 = new IntegerSum(0);
ImmutableList<Integer> list3 = Lists.immutable.ofAll(ParallelIterateAcceptanceTest.createIntegerList(15));
ParallelIterate.forEach(list3, new SumProcedure(sum3), new SumCombiner(sum3), 1, list3.size() / 2);
Assert.assertEquals(15, sum3.getSum());
IntegerSum sum4 = new IntegerSum(0);
ImmutableList<Integer> list4 = Lists.immutable.ofAll(ParallelIterateAcceptanceTest.createIntegerList(35));
ParallelIterate.forEach(list4, new SumProcedure(sum4), new SumCombiner(sum4));
Assert.assertEquals(35, sum4.getSum());
IntegerSum sum5 = new IntegerSum(0);
ImmutableList<Integer> list5 = FastList.newList(list4).toImmutable();
ParallelIterate.forEach(list5, new SumProcedure(sum5), new SumCombiner(sum5));
Assert.assertEquals(35, sum5.getSum());
IntegerSum sum6 = new IntegerSum(0);
ImmutableList<Integer> list6 = Lists.immutable.ofAll(ParallelIterateAcceptanceTest.createIntegerList(40));
ParallelIterate.forEach(list6, new SumProcedure(sum6), new SumCombiner(sum6), 1, list6.size() / 2);
Assert.assertEquals(40, sum6.getSum());
IntegerSum sum7 = new IntegerSum(0);
ImmutableList<Integer> list7 = FastList.newList(list6).toImmutable();
ParallelIterate.forEach(list7, new SumProcedure(sum7), new SumCombiner(sum7), 1, list6.size() / 2);
Assert.assertEquals(40, sum7.getSum());
}
@Test
public void testForEachWithException()
{
Verify.assertThrows(RuntimeException.class, () -> ParallelIterate.forEach(
ParallelIterateAcceptanceTest.createIntegerList(5),
new PassThruProcedureFactory<>(EXCEPTION_PROCEDURE),
new PassThruCombiner<>(),
1,
5));
}
@Test
public void testForEachWithIndexToArrayUsingFastListSerialPath()
{
Integer[] array = new Integer[200];
FastList<Integer> list = (FastList<Integer>) Interval.oneTo(200).toList();
Assert.assertTrue(ArrayIterate.allSatisfy(array, Predicates.isNull()));
ParallelIterate.forEachWithIndex(list, (each, index) -> array[index] = each);
Assert.assertArrayEquals(array, list.toArray(new Integer[]{}));
}
@Test
public void testForEachWithIndexToArrayUsingFastList()
{
Integer[] array = new Integer[200];
FastList<Integer> list = (FastList<Integer>) Interval.oneTo(200).toList();
Assert.assertTrue(ArrayIterate.allSatisfy(array, Predicates.isNull()));
ParallelIterate.forEachWithIndex(list, (each, index) -> array[index] = each, 10, 10);
Assert.assertArrayEquals(array, list.toArray(new Integer[]{}));
}
@Test
public void testForEachWithIndexToArrayUsingImmutableList()
{
Integer[] array = new Integer[200];
ImmutableList<Integer> list = Interval.oneTo(200).toList().toImmutable();
Assert.assertTrue(ArrayIterate.allSatisfy(array, Predicates.isNull()));
ParallelIterate.forEachWithIndex(list, (each, index) -> array[index] = each, 10, 10);
Assert.assertArrayEquals(array, list.toArray(new Integer[]{}));
}
@Test
public void testForEachWithIndexToArrayUsingArrayList()
{
Integer[] array = new Integer[200];
List<Integer> list = new ArrayList<>(Interval.oneTo(200));
Assert.assertTrue(ArrayIterate.allSatisfy(array, Predicates.isNull()));
ParallelIterate.forEachWithIndex(list, (each, index) -> array[index] = each, 10, 10);
Assert.assertArrayEquals(array, list.toArray(new Integer[]{}));
}
@Test
public void testForEachWithIndexToArrayUsingFixedArrayList()
{
Integer[] array = new Integer[10];
List<Integer> list = Arrays.asList(1, 2, 3, 4, 5, 6, 7, 8, 9, 10);
Assert.assertTrue(ArrayIterate.allSatisfy(array, Predicates.isNull()));
ParallelIterate.forEachWithIndex(list, (each, index) -> array[index] = each, 1, 2);
Assert.assertArrayEquals(array, list.toArray(new Integer[list.size()]));
}
@Test
public void testForEachWithIndexException()
{
Verify.assertThrows(RuntimeException.class, () -> ParallelIterate.forEachWithIndex(
ParallelIterateAcceptanceTest.createIntegerList(5),
new PassThruObjectIntProcedureFactory<>(EXCEPTION_OBJECT_INT_PROCEDURE),
new PassThruCombiner<>(),
1,
5));
}
@Test
public void select()
{
this.iterables.forEach(Procedures.cast(this::basicSelect));
}
private void basicSelect(RichIterable<Integer> iterable)
{
Collection<Integer> actual1 = ParallelIterate.select(iterable, Predicates.greaterThan(10000));
Collection<Integer> actual2 = ParallelIterate.select(iterable, Predicates.greaterThan(10000), HashBag.<Integer>newBag(), 3, this.executor, true);
Collection<Integer> actual3 = ParallelIterate.select(iterable, Predicates.greaterThan(10000), true);
RichIterable<Integer> expected = iterable.select(Predicates.greaterThan(10000));
Assert.assertEquals(expected.getClass().getSimpleName() + '/' + actual1.getClass().getSimpleName(), expected, actual1);
Assert.assertEquals(expected.getClass().getSimpleName() + '/' + actual2.getClass().getSimpleName(), expected.toBag(), actual2);
Assert.assertEquals(expected.getClass().getSimpleName() + '/' + actual3.getClass().getSimpleName(), expected.toBag(), HashBag.newBag(actual3));
}
@Test
public void selectSortedSet()
{
RichIterable<Integer> iterable = Interval.oneTo(20000).toSortedSet();
Collection<Integer> actual1 = ParallelIterate.select(iterable, Predicates.greaterThan(10000));
Collection<Integer> actual2 = ParallelIterate.select(iterable, Predicates.greaterThan(10000), true);
RichIterable<Integer> expected = iterable.select(Predicates.greaterThan(10000));
Assert.assertSame(expected.getClass(), actual1.getClass());
Assert.assertSame(expected.getClass(), actual2.getClass());
Assert.assertEquals(expected.getClass().getSimpleName() + '/' + actual1.getClass().getSimpleName(), expected, actual1);
Assert.assertEquals(expected.getClass().getSimpleName() + '/' + actual2.getClass().getSimpleName(), expected, actual2);
}
@Test
public void count()
{
this.iterables.forEach(Procedures.cast(this::basicCount));
}
private void basicCount(RichIterable<Integer> listIterable)
{
int actual1 = ParallelIterate.count(listIterable, Predicates.greaterThan(10000));
int actual2 = ParallelIterate.count(listIterable, Predicates.greaterThan(10000), 11, this.executor);
Assert.assertEquals(10000, actual1);
Assert.assertEquals(10000, actual2);
}
@Test
public void reject()
{
this.iterables.forEach(Procedures.cast(this::basicReject));
}
private void basicReject(RichIterable<Integer> iterable)
{
Collection<Integer> actual1 = ParallelIterate.reject(iterable, Predicates.greaterThan(10000));
Collection<Integer> actual2 = ParallelIterate.reject(iterable, Predicates.greaterThan(10000), HashBag.<Integer>newBag(), 3, this.executor, true);
Collection<Integer> actual3 = ParallelIterate.reject(iterable, Predicates.greaterThan(10000), true);
RichIterable<Integer> expected = iterable.reject(Predicates.greaterThan(10000));
Assert.assertEquals(expected.getClass().getSimpleName() + '/' + actual1.getClass().getSimpleName(), expected, actual1);
Assert.assertEquals(expected.getClass().getSimpleName() + '/' + actual2.getClass().getSimpleName(), expected.toBag(), actual2);
Assert.assertEquals(expected.getClass().getSimpleName() + '/' + actual3.getClass().getSimpleName(), expected.toBag(), HashBag.newBag(actual3));
}
@Test
public void collect()
{
this.iterables.forEach(Procedures.cast(this::basicCollect));
}
private void basicCollect(RichIterable<Integer> iterable)
{
Collection<String> actual1 = ParallelIterate.collect(iterable, String::valueOf);
Collection<String> actual2 = ParallelIterate.collect(iterable, String::valueOf, HashBag.<String>newBag(), 3, this.executor, false);
Collection<String> actual3 = ParallelIterate.collect(iterable, String::valueOf, true);
RichIterable<String> expected = iterable.collect(String::valueOf);
Verify.assertSize(20000, actual1);
Verify.assertContains(String.valueOf(20000), actual1);
Assert.assertEquals(expected.getClass().getSimpleName() + '/' + actual1.getClass().getSimpleName(), expected, actual1);
Assert.assertEquals(expected.getClass().getSimpleName() + '/' + actual2.getClass().getSimpleName(), expected.toBag(), actual2);
Assert.assertEquals(expected.getClass().getSimpleName() + '/' + actual3.getClass().getSimpleName(), expected.toBag(), HashBag.newBag(actual3));
}
@Test
public void collectIf()
{
this.iterables.forEach(Procedures.cast(this::basicCollectIf));
}
private void basicCollectIf(RichIterable<Integer> collection)
{
Predicate<Integer> greaterThan = Predicates.greaterThan(10000);
Collection<String> actual1 = ParallelIterate.collectIf(collection, greaterThan, String::valueOf);
Collection<String> actual2 = ParallelIterate.collectIf(collection, greaterThan, String::valueOf, HashBag.<String>newBag(), 3, this.executor, true);
Collection<String> actual3 = ParallelIterate.collectIf(collection, greaterThan, String::valueOf, HashBag.<String>newBag(), 3, this.executor, true);
Bag<String> expected = collection.collectIf(greaterThan, String::valueOf).toBag();
Verify.assertSize(10000, actual1);
Verify.assertNotContains(String.valueOf(9000), actual1);
Verify.assertNotContains(String.valueOf(21000), actual1);
Verify.assertContains(String.valueOf(15976), actual1);
Assert.assertEquals(expected.getClass().getSimpleName() + '/' + actual1.getClass().getSimpleName(), expected, HashBag.newBag(actual1));
Assert.assertEquals(expected.getClass().getSimpleName() + '/' + actual2.getClass().getSimpleName(), expected, actual2);
Assert.assertEquals(expected.getClass().getSimpleName() + '/' + actual3.getClass().getSimpleName(), expected, actual3);
}
@Test
public void flatCollect()
{
this.iterables.forEach(Procedures.cast(this::basicFlatCollect));
}
private void basicFlatCollect(RichIterable<Integer> iterable)
{
Collection<String> actual1 = ParallelIterate.flatCollect(iterable, INT_TO_TWO_STRINGS);
Collection<String> actual2 = ParallelIterate.flatCollect(iterable, INT_TO_TWO_STRINGS, HashBag.<String>newBag(), 3, this.executor, false);
Collection<String> actual3 = ParallelIterate.flatCollect(iterable, INT_TO_TWO_STRINGS, true);
RichIterable<String> expected1 = iterable.flatCollect(INT_TO_TWO_STRINGS);
RichIterable<String> expected2 = iterable.flatCollect(INT_TO_TWO_STRINGS, HashBag.<String>newBag());
Verify.assertContains(String.valueOf(20000), actual1);
Assert.assertEquals(expected1.getClass().getSimpleName() + '/' + actual1.getClass().getSimpleName(), expected1, actual1);
Assert.assertEquals(expected2.getClass().getSimpleName() + '/' + actual2.getClass().getSimpleName(), expected2, actual2);
Assert.assertEquals(expected1.getClass().getSimpleName() + '/' + actual3.getClass().getSimpleName(), expected1.toBag(), HashBag.newBag(actual3));
}
@Test
public void groupBy()
{
FastList<Integer> iterable = FastList.newWithNValues(10000000, new Function0<Integer>()
{
private int current;
public Integer value()
{
if (this.current < 4)
{
return Integer.valueOf(this.current++);
}
this.current = 0;
return Integer.valueOf(4);
}
});
iterable.shuffleThis();
Multimap<String, Integer> expected = iterable.toBag().groupBy(String::valueOf);
Multimap<String, Integer> expectedAsSet = iterable.toSet().groupBy(String::valueOf);
Multimap<String, Integer> result1 = ParallelIterate.groupBy(iterable.toList(), String::valueOf, 100);
Assert.assertEquals(expected, HashBagMultimap.newMultimap(result1));
Multimap<String, Integer> result2 = ParallelIterate.groupBy(iterable.toList(), String::valueOf);
Assert.assertEquals(expected, HashBagMultimap.newMultimap(result2));
Multimap<String, Integer> result3 = ParallelIterate.groupBy(iterable.toSet(), String::valueOf, SynchronizedPutUnifiedSetMultimap.<String, Integer>newMultimap(), 100);
Assert.assertEquals(expectedAsSet, result3);
Multimap<String, Integer> result4 = ParallelIterate.groupBy(iterable.toSet(), String::valueOf, SynchronizedPutUnifiedSetMultimap.<String, Integer>newMultimap());
Assert.assertEquals(expectedAsSet, result4);
Multimap<String, Integer> result5 = ParallelIterate.groupBy(iterable.toSortedSet(), String::valueOf, SynchronizedPutUnifiedSetMultimap.<String, Integer>newMultimap(), 100);
Assert.assertEquals(expectedAsSet, result5);
Multimap<String, Integer> result6 = ParallelIterate.groupBy(iterable.toSortedSet(), String::valueOf, SynchronizedPutUnifiedSetMultimap.<String, Integer>newMultimap());
Assert.assertEquals(expectedAsSet, result6);
Multimap<String, Integer> result7 = ParallelIterate.groupBy(iterable.toBag(), String::valueOf, SynchronizedPutHashBagMultimap.<String, Integer>newMultimap(), 100);
Assert.assertEquals(expected, result7);
Multimap<String, Integer> result8 = ParallelIterate.groupBy(iterable.toBag(), String::valueOf, SynchronizedPutHashBagMultimap.<String, Integer>newMultimap());
Assert.assertEquals(expected, result8);
Multimap<String, Integer> result9 = ParallelIterate.groupBy(iterable.toList().toImmutable(), String::valueOf);
Assert.assertEquals(expected, HashBagMultimap.newMultimap(result9));
Multimap<String, Integer> result10 = ParallelIterate.groupBy(iterable.toSortedList(), String::valueOf, 100);
Assert.assertEquals(expected, HashBagMultimap.newMultimap(result10));
Multimap<String, Integer> result11 = ParallelIterate.groupBy(iterable.toSortedList(), String::valueOf);
Assert.assertEquals(expected, HashBagMultimap.newMultimap(result11));
Multimap<String, Integer> result12 = ParallelIterate.groupBy(iterable, String::valueOf, MultiReaderFastListMultimap.<String, Integer>newMultimap(), 100);
Assert.assertEquals(expected, HashBagMultimap.newMultimap(result12));
Multimap<String, Integer> result13 = ParallelIterate.groupBy(iterable, String::valueOf, MultiReaderFastListMultimap.<String, Integer>newMultimap());
Assert.assertEquals(expected, HashBagMultimap.newMultimap(result13));
Multimap<String, Integer> result14 = ParallelIterate.groupBy(iterable, String::valueOf, MultiReaderHashBagMultimap.<String, Integer>newMultimap(), 100);
Assert.assertEquals(expected, result14);
Multimap<String, Integer> result15 = ParallelIterate.groupBy(iterable, String::valueOf, MultiReaderHashBagMultimap.<String, Integer>newMultimap());
Assert.assertEquals(expected, result15);
Multimap<String, Integer> result16 = ParallelIterate.groupBy(iterable, String::valueOf, MultiReaderUnifiedSetMultimap.<String, Integer>newMultimap(), 100);
Assert.assertEquals(expectedAsSet, result16);
Multimap<String, Integer> result17 = ParallelIterate.groupBy(iterable, String::valueOf, MultiReaderUnifiedSetMultimap.<String, Integer>newMultimap());
Assert.assertEquals(expectedAsSet, result17);
}
@Test
public void aggregateInPlaceBy()
{
Procedure2<AtomicInteger, Integer> countAggregator = (aggregate, value) -> aggregate.incrementAndGet();
List<Integer> list = Interval.oneTo(20000);
MutableMap<String, AtomicInteger> aggregation =
ParallelIterate.aggregateInPlaceBy(list, EVEN_OR_ODD, ATOMIC_INTEGER_NEW, countAggregator);
Assert.assertEquals(10000, aggregation.get("Even").intValue());
Assert.assertEquals(10000, aggregation.get("Odd").intValue());
ParallelIterate.aggregateInPlaceBy(list, EVEN_OR_ODD, ATOMIC_INTEGER_NEW, countAggregator, aggregation);
Assert.assertEquals(20000, aggregation.get("Even").intValue());
Assert.assertEquals(20000, aggregation.get("Odd").intValue());
}
@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());
}
private static List<Integer> createIntegerList(int size)
{
return Collections.nCopies(size, Integer.valueOf(1));
}
private class RecursiveProcedure implements Procedure<Integer>
{
private static final long serialVersionUID = 1L;
private final ExecutorService executorService = ParallelIterate.newPooledExecutor("ParallelIterateTest", false);
@Override
public void value(Integer level)
{
if (level > 0)
{
ParallelIterateAcceptanceTest.this.threadNames.add(Thread.currentThread().getName());
this.executeParallelIterate(level - 1, this.executorService);
}
else
{
this.simulateWork();
}
}
private void simulateWork()
{
synchronized (ParallelIterateAcceptanceTest.this)
{
ParallelIterateAcceptanceTest.this.count++;
}
}
private void executeParallelIterate(int level, ExecutorService executorService)
{
MutableList<Integer> items = Lists.mutable.of();
for (int i = 0; i < 20000; i++)
{
items.add(i % 1000 == 0 ? level : 0);
}
ParallelIterate.forEach(items, new RecursiveProcedure(), executorService);
}
}
public static final class IntegerSum
{
private int sum;
public IntegerSum(int newSum)
{
this.sum = newSum;
}
public IntegerSum add(int value)
{
this.sum += value;
return this;
}
public int getSum()
{
return this.sum;
}
}
public static final class SumProcedure
implements Procedure<Integer>, Function2<IntegerSum, Integer, IntegerSum>, ProcedureFactory<SumProcedure>
{
private static final long serialVersionUID = 1L;
private final IntegerSum sum;
public SumProcedure(IntegerSum newSum)
{
this.sum = newSum;
}
@Override
public SumProcedure create()
{
return new SumProcedure(new IntegerSum(0));
}
@Override
public IntegerSum value(IntegerSum s1, Integer s2)
{
return s1.add(s2);
}
@Override
public void value(Integer object)
{
this.sum.add(object);
}
public int getSum()
{
return this.sum.getSum();
}
}
public static final class SumCombiner extends AbstractProcedureCombiner<SumProcedure>
{
private static final long serialVersionUID = 1L;
private final IntegerSum sum;
public SumCombiner(IntegerSum initialSum)
{
super(true);
this.sum = initialSum;
}
@Override
public void combineOne(SumProcedure sumProcedure)
{
this.sum.add(sumProcedure.getSum());
}
}
}