/*
* Copyright (c) 2008-2017, Hazelcast, Inc. All Rights Reserved.
*
* 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.hazelcast.projection;
import com.hazelcast.config.Config;
import com.hazelcast.config.InMemoryFormat;
import com.hazelcast.config.MapConfig;
import com.hazelcast.core.HazelcastInstance;
import com.hazelcast.core.IMap;
import com.hazelcast.nio.ObjectDataInput;
import com.hazelcast.nio.ObjectDataOutput;
import com.hazelcast.nio.serialization.DataSerializable;
import com.hazelcast.query.Predicate;
import com.hazelcast.query.Predicates;
import com.hazelcast.test.HazelcastParallelClassRunner;
import com.hazelcast.test.HazelcastTestSupport;
import com.hazelcast.test.TestHazelcastInstanceFactory;
import com.hazelcast.test.annotation.ParallelTest;
import com.hazelcast.test.annotation.QuickTest;
import org.junit.Rule;
import org.junit.Test;
import org.junit.experimental.categories.Category;
import org.junit.rules.ExpectedException;
import org.junit.runner.RunWith;
import java.io.IOException;
import java.util.Collection;
import java.util.Map;
import static org.hamcrest.collection.IsIterableContainingInAnyOrder.containsInAnyOrder;
import static org.junit.Assert.assertThat;
@RunWith(HazelcastParallelClassRunner.class)
@Category({QuickTest.class, ParallelTest.class})
public class MapProjectionTest extends HazelcastTestSupport {
@Rule
public ExpectedException expected = ExpectedException.none();
@Test(expected = NullPointerException.class)
public void null_projection() {
getMapWithNodeCount(1).project(null);
}
@Test(expected = NullPointerException.class)
public void null_predicate() {
IMap<String, Double> map = getMapWithNodeCount(1);
map.project(new PrimitiveValueIncrementingProjection(), null);
}
@Test(expected = NullPointerException.class)
@SuppressWarnings({"RedundantCast", "unchecked"})
public void null_projection_and_predicate() {
getMapWithNodeCount(1).project((Projection) null, (Predicate) null);
}
@Test
public void projection_1Node_primitiveValue() {
IMap<String, Double> map = getMapWithNodeCount(3);
populateMap(map);
Collection<Double> result = map.project(new PrimitiveValueIncrementingProjection());
assertThat(result, containsInAnyOrder(2.0d, 5.0d, 8.0d));
}
@Test
public void projection_3Nodes_primitiveValue() {
IMap<String, Double> map = getMapWithNodeCount(3);
populateMap(map);
Collection<Double> result = map.project(new PrimitiveValueIncrementingProjection());
assertThat(result, containsInAnyOrder(2.0d, 5.0d, 8.0d));
}
@Test
public void projection_3Nodes_primitiveValue_exceptionThrowingProjection() {
IMap<String, Double> map = getMapWithNodeCount(3);
populateMap(map);
expected.expect(RuntimeException.class);
expected.expectMessage("transform() exception");
map.project(new ExceptionThrowingProjection());
}
@Test
public void projection_3Nodes_nullReturningProjection() {
IMap<String, Double> map = getMapWithNodeCount(3);
populateMap(map);
Collection<Double> result = map.project(new NullReturningProjection());
assertThat(result, containsInAnyOrder((Double) null, null, null));
}
@Test
public void projection_1Node_objectValue() {
IMap<String, Person> map = getMapWithNodeCount(1);
populateMapWithPersons(map);
Collection<Double> result = map.project(new ObjectValueIncrementingProjection());
assertThat(result, containsInAnyOrder(2.0d, 5.0d, 8.0d));
}
@Test
public void projection_3Nodes_objectValue() {
IMap<String, Person> map = getMapWithNodeCount(3);
populateMapWithPersons(map);
Collection<Double> result = map.project(new ObjectValueIncrementingProjection());
assertThat(result, containsInAnyOrder(2.0d, 5.0d, 8.0d));
}
@Test
public void projection_1Node_objectValue_withPredicate() {
IMap<String, Person> map = getMapWithNodeCount(1);
populateMapWithPersons(map);
Collection<Double> result = map.project(new ObjectValueIncrementingProjection(), Predicates.greaterThan("age", 1.0d));
assertThat(result, containsInAnyOrder(5.0d, 8.0d));
}
@Test
public void projection_3Nodes_objectValue_withPredicate() {
IMap<String, Person> map = getMapWithNodeCount(3);
populateMapWithPersons(map);
Collection<Double> result = map.project(new ObjectValueIncrementingProjection(), Predicates.greaterThan("age", 1.0d));
assertThat(result, containsInAnyOrder(5.0d, 8.0d));
}
public <K, V> IMap<K, V> getMapWithNodeCount(int nodeCount) {
if (nodeCount < 1) {
throw new IllegalArgumentException("node count < 1");
}
TestHazelcastInstanceFactory factory = createHazelcastInstanceFactory(nodeCount);
Config config = new Config();
config.setProperty("hazelcast.partition.count", "3");
MapConfig mapConfig = new MapConfig();
mapConfig.setName("aggr");
mapConfig.setInMemoryFormat(InMemoryFormat.OBJECT);
config.addMapConfig(mapConfig);
doWithConfig(config);
HazelcastInstance instance = factory.newInstances(config)[0];
return instance.getMap("aggr");
}
public void doWithConfig(Config config) {
}
private void populateMap(IMap<String, Double> map) {
map.put("key1", 1.0d);
map.put("key2", 4.0d);
map.put("key3", 7.0d);
}
private void populateMapWithPersons(IMap<String, Person> map) {
map.put("key1", new Person(1.0d));
map.put("key2", new Person(4.0d));
map.put("key3", new Person(7.0d));
}
public static class Person implements DataSerializable {
public double age;
public Person() {
}
public Person(double age) {
this.age = age;
}
@Override
public void writeData(ObjectDataOutput out) throws IOException {
out.writeDouble(age);
}
@Override
public void readData(ObjectDataInput in) throws IOException {
age = in.readDouble();
}
}
public static class ExceptionThrowingProjection extends Projection {
@Override
public Object transform(Object input) {
throw new RuntimeException("transform() exception");
}
}
public static class NullReturningProjection extends Projection {
@Override
public Object transform(Object input) {
return null;
}
}
public static class PrimitiveValueIncrementingProjection extends Projection<Map.Entry<String, Double>, Double> {
@Override
public Double transform(Map.Entry<String, Double> input) {
return input.getValue() + 1.0d;
}
}
public static class ObjectValueIncrementingProjection extends Projection<Map.Entry<String, Person>, Double> {
@Override
public Double transform(Map.Entry<String, Person> input) {
return input.getValue().age + 1.0d;
}
}
}