/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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 org.apache.flink.runtime.operators.hash;
import java.util.ArrayList;
import java.util.Collection;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Map.Entry;
import org.apache.flink.api.common.functions.AbstractRichFunction;
import org.apache.flink.api.common.functions.FlatJoinFunction;
import org.apache.flink.api.common.typeutils.TypeComparator;
import org.apache.flink.api.common.typeutils.TypePairComparator;
import org.apache.flink.api.common.typeutils.TypeSerializer;
import org.apache.flink.api.common.typeutils.record.RecordComparator;
import org.apache.flink.api.common.typeutils.record.RecordPairComparator;
import org.apache.flink.api.common.typeutils.record.RecordSerializer;
import org.apache.flink.api.java.record.functions.JoinFunction;
import org.apache.flink.runtime.io.disk.iomanager.IOManager;
import org.apache.flink.runtime.jobgraph.tasks.AbstractInvokable;
import org.apache.flink.runtime.memorymanager.DefaultMemoryManager;
import org.apache.flink.runtime.memorymanager.MemoryManager;
import org.apache.flink.runtime.operators.testutils.DiscardingOutputCollector;
import org.apache.flink.runtime.operators.testutils.DummyInvokable;
import org.apache.flink.runtime.operators.testutils.TestData;
import org.apache.flink.runtime.operators.testutils.UniformIntPairGenerator;
import org.apache.flink.runtime.operators.testutils.UnionIterator;
import org.apache.flink.runtime.operators.testutils.TestData.Generator;
import org.apache.flink.runtime.operators.testutils.TestData.Generator.KeyMode;
import org.apache.flink.runtime.operators.testutils.TestData.Generator.ValueMode;
import org.apache.flink.runtime.operators.testutils.types.IntPair;
import org.apache.flink.runtime.operators.testutils.types.IntPairComparator;
import org.apache.flink.runtime.operators.testutils.types.IntPairSerializer;
import org.apache.flink.types.IntValue;
import org.apache.flink.types.NullKeyFieldException;
import org.apache.flink.types.Record;
import org.apache.flink.types.Value;
import org.apache.flink.util.Collector;
import org.apache.flink.util.MutableObjectIterator;
import org.junit.After;
import org.junit.Assert;
import org.junit.Before;
import org.junit.Test;
@SuppressWarnings("serial")
public class HashMatchIteratorITCase {
private static final int MEMORY_SIZE = 16000000; // total memory
private static final int INPUT_1_SIZE = 20000;
private static final int INPUT_2_SIZE = 1000;
private static final long SEED1 = 561349061987311L;
private static final long SEED2 = 231434613412342L;
private final AbstractInvokable parentTask = new DummyInvokable();
private IOManager ioManager;
private MemoryManager memoryManager;
private TypeSerializer<Record> recordSerializer;
private TypeComparator<Record> record1Comparator;
private TypeComparator<Record> record2Comparator;
private TypePairComparator<Record, Record> recordPairComparator;
private TypeSerializer<IntPair> pairSerializer;
private TypeComparator<IntPair> pairComparator;
private TypePairComparator<IntPair, Record> pairRecordPairComparator;
private TypePairComparator<Record, IntPair> recordPairPairComparator;
@SuppressWarnings("unchecked")
@Before
public void beforeTest() {
this.recordSerializer = RecordSerializer.get();
this.record1Comparator = new RecordComparator(new int[] {0}, new Class[] {TestData.Key.class});
this.record2Comparator = new RecordComparator(new int[] {0}, new Class[] {TestData.Key.class});
this.recordPairComparator = new RecordPairComparator(new int[] {0}, new int[] {0}, new Class[] {TestData.Key.class});
this.pairSerializer = new IntPairSerializer();
this.pairComparator = new IntPairComparator();
this.pairRecordPairComparator = new IntPairRecordPairComparator();
this.recordPairPairComparator = new RecordIntPairPairComparator();
this.memoryManager = new DefaultMemoryManager(MEMORY_SIZE, 1);
this.ioManager = new IOManager();
}
@After
public void afterTest()
{
if (this.ioManager != null) {
this.ioManager.shutdown();
if (!this.ioManager.isProperlyShutDown()) {
Assert.fail("I/O manager failed to properly shut down.");
}
this.ioManager = null;
}
if (this.memoryManager != null) {
Assert.assertTrue("Memory Leak: Not all memory has been returned to the memory manager.",
this.memoryManager.verifyEmpty());
this.memoryManager.shutdown();
this.memoryManager = null;
}
}
@Test
public void testBuildFirst() {
try {
Generator generator1 = new Generator(SEED1, 500, 4096, KeyMode.RANDOM, ValueMode.RANDOM_LENGTH);
Generator generator2 = new Generator(SEED2, 500, 2048, KeyMode.RANDOM, ValueMode.RANDOM_LENGTH);
final TestData.GeneratorIterator input1 = new TestData.GeneratorIterator(generator1, INPUT_1_SIZE);
final TestData.GeneratorIterator input2 = new TestData.GeneratorIterator(generator2, INPUT_2_SIZE);
// collect expected data
final Map<TestData.Key, Collection<RecordMatch>> expectedMatchesMap = matchRecordValues(
collectRecordData(input1),
collectRecordData(input2));
final JoinFunction matcher = new RecordMatchRemovingJoin(expectedMatchesMap);
final Collector<Record> collector = new DiscardingOutputCollector<Record>();
// reset the generators
generator1.reset();
generator2.reset();
input1.reset();
input2.reset();
// compare with iterator values
BuildFirstHashMatchIterator<Record, Record, Record> iterator =
new BuildFirstHashMatchIterator<Record, Record, Record>(
input1, input2, this.recordSerializer, this.record1Comparator,
this.recordSerializer, this.record2Comparator, this.recordPairComparator,
this.memoryManager, ioManager, this.parentTask, 1.0);
iterator.open();
while (iterator.callWithNextKey(matcher, collector));
iterator.close();
// assert that each expected match was seen
for (Entry<TestData.Key, Collection<RecordMatch>> entry : expectedMatchesMap.entrySet()) {
if (!entry.getValue().isEmpty()) {
Assert.fail("Collection for key " + entry.getKey() + " is not empty");
}
}
}
catch (Exception e) {
e.printStackTrace();
Assert.fail("An exception occurred during the test: " + e.getMessage());
}
}
@Test
public void testBuildFirstWithHighNumberOfCommonKeys()
{
// the size of the left and right inputs
final int INPUT_1_SIZE = 200;
final int INPUT_2_SIZE = 100;
final int INPUT_1_DUPLICATES = 10;
final int INPUT_2_DUPLICATES = 2000;
final int DUPLICATE_KEY = 13;
try {
Generator generator1 = new Generator(SEED1, 500, 4096, KeyMode.RANDOM, ValueMode.RANDOM_LENGTH);
Generator generator2 = new Generator(SEED2, 500, 2048, KeyMode.RANDOM, ValueMode.RANDOM_LENGTH);
final TestData.GeneratorIterator gen1Iter = new TestData.GeneratorIterator(generator1, INPUT_1_SIZE);
final TestData.GeneratorIterator gen2Iter = new TestData.GeneratorIterator(generator2, INPUT_2_SIZE);
final TestData.ConstantValueIterator const1Iter = new TestData.ConstantValueIterator(DUPLICATE_KEY, "LEFT String for Duplicate Keys", INPUT_1_DUPLICATES);
final TestData.ConstantValueIterator const2Iter = new TestData.ConstantValueIterator(DUPLICATE_KEY, "RIGHT String for Duplicate Keys", INPUT_2_DUPLICATES);
final List<MutableObjectIterator<Record>> inList1 = new ArrayList<MutableObjectIterator<Record>>();
inList1.add(gen1Iter);
inList1.add(const1Iter);
final List<MutableObjectIterator<Record>> inList2 = new ArrayList<MutableObjectIterator<Record>>();
inList2.add(gen2Iter);
inList2.add(const2Iter);
MutableObjectIterator<Record> input1 = new UnionIterator<Record>(inList1);
MutableObjectIterator<Record> input2 = new UnionIterator<Record>(inList2);
// collect expected data
final Map<TestData.Key, Collection<RecordMatch>> expectedMatchesMap = matchRecordValues(
collectRecordData(input1),
collectRecordData(input2));
// re-create the whole thing for actual processing
// reset the generators and iterators
generator1.reset();
generator2.reset();
const1Iter.reset();
const2Iter.reset();
gen1Iter.reset();
gen2Iter.reset();
inList1.clear();
inList1.add(gen1Iter);
inList1.add(const1Iter);
inList2.clear();
inList2.add(gen2Iter);
inList2.add(const2Iter);
input1 = new UnionIterator<Record>(inList1);
input2 = new UnionIterator<Record>(inList2);
final JoinFunction matcher = new RecordMatchRemovingJoin(expectedMatchesMap);
final Collector<Record> collector = new DiscardingOutputCollector<Record>();
BuildFirstHashMatchIterator<Record, Record, Record> iterator =
new BuildFirstHashMatchIterator<Record, Record, Record>(
input1, input2, this.recordSerializer, this.record1Comparator,
this.recordSerializer, this.record2Comparator, this.recordPairComparator,
this.memoryManager, ioManager, this.parentTask, 1.0);
iterator.open();
while (iterator.callWithNextKey(matcher, collector));
iterator.close();
// assert that each expected match was seen
for (Entry<TestData.Key, Collection<RecordMatch>> entry : expectedMatchesMap.entrySet()) {
if (!entry.getValue().isEmpty()) {
Assert.fail("Collection for key " + entry.getKey() + " is not empty");
}
}
}
catch (Exception e) {
e.printStackTrace();
Assert.fail("An exception occurred during the test: " + e.getMessage());
}
}
@Test
public void testBuildSecond() {
try {
Generator generator1 = new Generator(SEED1, 500, 4096, KeyMode.RANDOM, ValueMode.RANDOM_LENGTH);
Generator generator2 = new Generator(SEED2, 500, 2048, KeyMode.RANDOM, ValueMode.RANDOM_LENGTH);
final TestData.GeneratorIterator input1 = new TestData.GeneratorIterator(generator1, INPUT_1_SIZE);
final TestData.GeneratorIterator input2 = new TestData.GeneratorIterator(generator2, INPUT_2_SIZE);
// collect expected data
final Map<TestData.Key, Collection<RecordMatch>> expectedMatchesMap = matchRecordValues(
collectRecordData(input1),
collectRecordData(input2));
final JoinFunction matcher = new RecordMatchRemovingJoin(expectedMatchesMap);
final Collector<Record> collector = new DiscardingOutputCollector<Record>();
// reset the generators
generator1.reset();
generator2.reset();
input1.reset();
input2.reset();
// compare with iterator values
BuildSecondHashMatchIterator<Record, Record, Record> iterator =
new BuildSecondHashMatchIterator<Record, Record, Record>(
input1, input2, this.recordSerializer, this.record1Comparator,
this.recordSerializer, this.record2Comparator, this.recordPairComparator,
this.memoryManager, ioManager, this.parentTask, 1.0);
iterator.open();
while (iterator.callWithNextKey(matcher, collector));
iterator.close();
// assert that each expected match was seen
for (Entry<TestData.Key, Collection<RecordMatch>> entry : expectedMatchesMap.entrySet()) {
if (!entry.getValue().isEmpty()) {
Assert.fail("Collection for key " + entry.getKey() + " is not empty");
}
}
}
catch (Exception e) {
e.printStackTrace();
Assert.fail("An exception occurred during the test: " + e.getMessage());
}
}
@Test
public void testBuildSecondWithHighNumberOfCommonKeys()
{
// the size of the left and right inputs
final int INPUT_1_SIZE = 200;
final int INPUT_2_SIZE = 100;
final int INPUT_1_DUPLICATES = 10;
final int INPUT_2_DUPLICATES = 2000;
final int DUPLICATE_KEY = 13;
try {
Generator generator1 = new Generator(SEED1, 500, 4096, KeyMode.RANDOM, ValueMode.RANDOM_LENGTH);
Generator generator2 = new Generator(SEED2, 500, 2048, KeyMode.RANDOM, ValueMode.RANDOM_LENGTH);
final TestData.GeneratorIterator gen1Iter = new TestData.GeneratorIterator(generator1, INPUT_1_SIZE);
final TestData.GeneratorIterator gen2Iter = new TestData.GeneratorIterator(generator2, INPUT_2_SIZE);
final TestData.ConstantValueIterator const1Iter = new TestData.ConstantValueIterator(DUPLICATE_KEY, "LEFT String for Duplicate Keys", INPUT_1_DUPLICATES);
final TestData.ConstantValueIterator const2Iter = new TestData.ConstantValueIterator(DUPLICATE_KEY, "RIGHT String for Duplicate Keys", INPUT_2_DUPLICATES);
final List<MutableObjectIterator<Record>> inList1 = new ArrayList<MutableObjectIterator<Record>>();
inList1.add(gen1Iter);
inList1.add(const1Iter);
final List<MutableObjectIterator<Record>> inList2 = new ArrayList<MutableObjectIterator<Record>>();
inList2.add(gen2Iter);
inList2.add(const2Iter);
MutableObjectIterator<Record> input1 = new UnionIterator<Record>(inList1);
MutableObjectIterator<Record> input2 = new UnionIterator<Record>(inList2);
// collect expected data
final Map<TestData.Key, Collection<RecordMatch>> expectedMatchesMap = matchRecordValues(
collectRecordData(input1),
collectRecordData(input2));
// re-create the whole thing for actual processing
// reset the generators and iterators
generator1.reset();
generator2.reset();
const1Iter.reset();
const2Iter.reset();
gen1Iter.reset();
gen2Iter.reset();
inList1.clear();
inList1.add(gen1Iter);
inList1.add(const1Iter);
inList2.clear();
inList2.add(gen2Iter);
inList2.add(const2Iter);
input1 = new UnionIterator<Record>(inList1);
input2 = new UnionIterator<Record>(inList2);
final JoinFunction matcher = new RecordMatchRemovingJoin(expectedMatchesMap);
final Collector<Record> collector = new DiscardingOutputCollector<Record>();
BuildSecondHashMatchIterator<Record, Record, Record> iterator =
new BuildSecondHashMatchIterator<Record, Record, Record>(
input1, input2, this.recordSerializer, this.record1Comparator,
this.recordSerializer, this.record2Comparator, this.recordPairComparator,
this.memoryManager, ioManager, this.parentTask, 1.0);
iterator.open();
while (iterator.callWithNextKey(matcher, collector));
iterator.close();
// assert that each expected match was seen
for (Entry<TestData.Key, Collection<RecordMatch>> entry : expectedMatchesMap.entrySet()) {
if (!entry.getValue().isEmpty()) {
Assert.fail("Collection for key " + entry.getKey() + " is not empty");
}
}
}
catch (Exception e) {
e.printStackTrace();
Assert.fail("An exception occurred during the test: " + e.getMessage());
}
}
@Test
public void testBuildFirstWithMixedDataTypes() {
try {
MutableObjectIterator<IntPair> input1 = new UniformIntPairGenerator(500, 40, false);
final Generator generator2 = new Generator(SEED2, 500, 2048, KeyMode.RANDOM, ValueMode.RANDOM_LENGTH);
final TestData.GeneratorIterator input2 = new TestData.GeneratorIterator(generator2, INPUT_2_SIZE);
// collect expected data
final Map<TestData.Key, Collection<RecordIntPairMatch>> expectedMatchesMap = matchRecordIntPairValues(
collectIntPairData(input1),
collectRecordData(input2));
final FlatJoinFunction<IntPair, Record, Record> matcher = new RecordIntPairMatchRemovingMatcher(expectedMatchesMap);
final Collector<Record> collector = new DiscardingOutputCollector<Record>();
// reset the generators
input1 = new UniformIntPairGenerator(500, 40, false);
generator2.reset();
input2.reset();
// compare with iterator values
BuildSecondHashMatchIterator<IntPair, Record, Record> iterator =
new BuildSecondHashMatchIterator<IntPair, Record, Record>(
input1, input2, this.pairSerializer, this.pairComparator,
this.recordSerializer, this.record2Comparator, this.pairRecordPairComparator,
this.memoryManager, this.ioManager, this.parentTask, 1.0);
iterator.open();
while (iterator.callWithNextKey(matcher, collector));
iterator.close();
// assert that each expected match was seen
for (Entry<TestData.Key, Collection<RecordIntPairMatch>> entry : expectedMatchesMap.entrySet()) {
if (!entry.getValue().isEmpty()) {
Assert.fail("Collection for key " + entry.getKey() + " is not empty");
}
}
}
catch (Exception e) {
e.printStackTrace();
Assert.fail("An exception occurred during the test: " + e.getMessage());
}
}
@Test
public void testBuildSecondWithMixedDataTypes() {
try {
MutableObjectIterator<IntPair> input1 = new UniformIntPairGenerator(500, 40, false);
final Generator generator2 = new Generator(SEED2, 500, 2048, KeyMode.RANDOM, ValueMode.RANDOM_LENGTH);
final TestData.GeneratorIterator input2 = new TestData.GeneratorIterator(generator2, INPUT_2_SIZE);
// collect expected data
final Map<TestData.Key, Collection<RecordIntPairMatch>> expectedMatchesMap = matchRecordIntPairValues(
collectIntPairData(input1),
collectRecordData(input2));
final FlatJoinFunction<IntPair, Record, Record> matcher = new RecordIntPairMatchRemovingMatcher(expectedMatchesMap);
final Collector<Record> collector = new DiscardingOutputCollector<Record>();
// reset the generators
input1 = new UniformIntPairGenerator(500, 40, false);
generator2.reset();
input2.reset();
// compare with iterator values
BuildFirstHashMatchIterator<IntPair, Record, Record> iterator =
new BuildFirstHashMatchIterator<IntPair, Record, Record>(
input1, input2, this.pairSerializer, this.pairComparator,
this.recordSerializer, this.record2Comparator, this.recordPairPairComparator,
this.memoryManager, this.ioManager, this.parentTask, 1.0);
iterator.open();
while (iterator.callWithNextKey(matcher, collector));
iterator.close();
// assert that each expected match was seen
for (Entry<TestData.Key, Collection<RecordIntPairMatch>> entry : expectedMatchesMap.entrySet()) {
if (!entry.getValue().isEmpty()) {
Assert.fail("Collection for key " + entry.getKey() + " is not empty");
}
}
}
catch (Exception e) {
e.printStackTrace();
Assert.fail("An exception occurred during the test: " + e.getMessage());
}
}
// --------------------------------------------------------------------------------------------
// Utilities
// --------------------------------------------------------------------------------------------
static Map<TestData.Key, Collection<RecordMatch>> matchRecordValues(
Map<TestData.Key, Collection<TestData.Value>> leftMap,
Map<TestData.Key, Collection<TestData.Value>> rightMap)
{
Map<TestData.Key, Collection<RecordMatch>> map = new HashMap<TestData.Key, Collection<RecordMatch>>();
for (TestData.Key key : leftMap.keySet()) {
Collection<TestData.Value> leftValues = leftMap.get(key);
Collection<TestData.Value> rightValues = rightMap.get(key);
if (rightValues == null) {
continue;
}
if (!map.containsKey(key)) {
map.put(key, new ArrayList<RecordMatch>());
}
Collection<RecordMatch> matchedValues = map.get(key);
for (TestData.Value leftValue : leftValues) {
for (TestData.Value rightValue : rightValues) {
matchedValues.add(new RecordMatch(leftValue, rightValue));
}
}
}
return map;
}
static Map<TestData.Key, Collection<RecordIntPairMatch>> matchRecordIntPairValues(
Map<Integer, Collection<Integer>> leftMap,
Map<TestData.Key, Collection<TestData.Value>> rightMap)
{
final Map<TestData.Key, Collection<RecordIntPairMatch>> map = new HashMap<TestData.Key, Collection<RecordIntPairMatch>>();
for (Integer i : leftMap.keySet()) {
final TestData.Key key = new TestData.Key(i.intValue());
final Collection<Integer> leftValues = leftMap.get(i);
final Collection<TestData.Value> rightValues = rightMap.get(key);
if (rightValues == null) {
continue;
}
if (!map.containsKey(key)) {
map.put(key, new ArrayList<RecordIntPairMatch>());
}
final Collection<RecordIntPairMatch> matchedValues = map.get(key);
for (Integer v : leftValues) {
for (TestData.Value val : rightValues) {
matchedValues.add(new RecordIntPairMatch(v, val));
}
}
}
return map;
}
static Map<TestData.Key, Collection<TestData.Value>> collectRecordData(MutableObjectIterator<Record> iter)
throws Exception
{
Map<TestData.Key, Collection<TestData.Value>> map = new HashMap<TestData.Key, Collection<TestData.Value>>();
Record pair = new Record();
while ((pair = iter.next(pair)) != null) {
TestData.Key key = pair.getField(0, TestData.Key.class);
if (!map.containsKey(key)) {
map.put(new TestData.Key(key.getKey()), new ArrayList<TestData.Value>());
}
Collection<TestData.Value> values = map.get(key);
values.add(new TestData.Value(pair.getField(1, TestData.Value.class).getValue()));
}
return map;
}
static Map<Integer, Collection<Integer>> collectIntPairData(MutableObjectIterator<IntPair> iter)
throws Exception
{
Map<Integer, Collection<Integer>> map = new HashMap<Integer, Collection<Integer>>();
IntPair pair = new IntPair();
while ((pair = iter.next(pair)) != null) {
final int key = pair.getKey();
final int value = pair.getValue();
if (!map.containsKey(key)) {
map.put(key, new ArrayList<Integer>());
}
Collection<Integer> values = map.get(key);
values.add(value);
}
return map;
}
/**
* Private class used for storage of the expected matches in a hash-map.
*/
static class RecordMatch {
private final Value left;
private final Value right;
public RecordMatch(Value left, Value right) {
this.left = left;
this.right = right;
}
@Override
public boolean equals(Object obj) {
RecordMatch o = (RecordMatch) obj;
return this.left.equals(o.left) && this.right.equals(o.right);
}
@Override
public int hashCode() {
return this.left.hashCode() ^ this.right.hashCode();
}
@Override
public String toString() {
return left + ", " + right;
}
}
/**
* Private class used for storage of the expected matches in a hash-map.
*/
static class RecordIntPairMatch
{
private final int left;
private final Value right;
public RecordIntPairMatch(int left, Value right) {
this.left = left;
this.right = right;
}
@Override
public boolean equals(Object obj) {
RecordIntPairMatch o = (RecordIntPairMatch) obj;
return this.left == o.left && this.right.equals(o.right);
}
@Override
public int hashCode() {
return this.left ^ this.right.hashCode();
}
@Override
public String toString() {
return left + ", " + right;
}
}
static final class RecordMatchRemovingJoin extends JoinFunction
{
private final Map<TestData.Key, Collection<RecordMatch>> toRemoveFrom;
protected RecordMatchRemovingJoin(Map<TestData.Key, Collection<RecordMatch>> map) {
this.toRemoveFrom = map;
}
@Override
public void join(Record rec1, Record rec2, Collector<Record> out) throws Exception
{
TestData.Key key = rec1.getField(0, TestData.Key.class);
TestData.Value value1 = rec1.getField(1, TestData.Value.class);
TestData.Value value2 = rec2.getField(1, TestData.Value.class);
//System.err.println("rec1 key = "+key+" rec2 key= "+rec2.getField(0, TestData.Key.class));
Collection<RecordMatch> matches = this.toRemoveFrom.get(key);
if (matches == null) {
Assert.fail("Match " + key + " - " + value1 + ":" + value2 + " is unexpected.");
}
Assert.assertTrue("Produced match was not contained: " + key + " - " + value1 + ":" + value2,
matches.remove(new RecordMatch(value1, value2)));
if (matches.isEmpty()) {
this.toRemoveFrom.remove(key);
}
}
}
static final class RecordIntPairMatchRemovingMatcher extends AbstractRichFunction implements FlatJoinFunction<IntPair, Record, Record>
{
private final Map<TestData.Key, Collection<RecordIntPairMatch>> toRemoveFrom;
protected RecordIntPairMatchRemovingMatcher(Map<TestData.Key, Collection<RecordIntPairMatch>> map) {
this.toRemoveFrom = map;
}
@Override
public void join(IntPair rec1, Record rec2, Collector<Record> out) throws Exception
{
final int k = rec1.getKey();
final int v = rec1.getValue();
final TestData.Key key = rec2.getField(0, TestData.Key.class);
final TestData.Value value = rec2.getField(1, TestData.Value.class);
Assert.assertTrue("Key does not match for matching IntPair Record combination.", k == key.getKey());
Collection<RecordIntPairMatch> matches = this.toRemoveFrom.get(key);
if (matches == null) {
Assert.fail("Match " + key + " - " + v + ":" + value + " is unexpected.");
}
Assert.assertTrue("Produced match was not contained: " + key + " - " + v + ":" + value,
matches.remove(new RecordIntPairMatch(v, value)));
if (matches.isEmpty()) {
this.toRemoveFrom.remove(key);
}
}
}
static final class IntPairRecordPairComparator extends TypePairComparator<IntPair, Record>
{
private int reference;
@Override
public void setReference(IntPair reference) {
this.reference = reference.getKey();
}
@Override
public boolean equalToReference(Record candidate) {
try {
final IntValue i = candidate.getField(0, IntValue.class);
return i.getValue() == this.reference;
} catch (NullPointerException npex) {
throw new NullKeyFieldException();
}
}
@Override
public int compareToReference(Record candidate) {
try {
final IntValue i = candidate.getField(0, IntValue.class);
return i.getValue() - this.reference;
} catch (NullPointerException npex) {
throw new NullKeyFieldException();
}
}
}
static final class RecordIntPairPairComparator extends TypePairComparator<Record, IntPair>
{
private int reference;
@Override
public void setReference(Record reference) {
this.reference = reference.getField(0, IntValue.class).getValue();
}
@Override
public boolean equalToReference(IntPair candidate) {
return this.reference == candidate.getKey();
}
@Override
public int compareToReference(IntPair candidate) {
return candidate.getKey() - this.reference;
}
}
}