/*
* 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.facebook.presto.sql.gen;
import com.facebook.presto.block.BlockAssertions;
import com.facebook.presto.operator.PagesHashStrategy;
import com.facebook.presto.operator.SimplePagesHashStrategy;
import com.facebook.presto.spi.Page;
import com.facebook.presto.spi.PageBuilder;
import com.facebook.presto.spi.block.Block;
import com.facebook.presto.spi.type.Type;
import com.facebook.presto.sql.gen.JoinCompiler.PagesHashStrategyFactory;
import com.facebook.presto.type.TypeUtils;
import com.google.common.collect.ImmutableList;
import com.google.common.primitives.Ints;
import org.testng.annotations.DataProvider;
import org.testng.annotations.Test;
import java.util.List;
import java.util.Optional;
import static com.facebook.presto.block.BlockAssertions.assertBlockEquals;
import static com.facebook.presto.operator.PageAssertions.assertPageEquals;
import static com.facebook.presto.spi.type.BigintType.BIGINT;
import static com.facebook.presto.spi.type.BooleanType.BOOLEAN;
import static com.facebook.presto.spi.type.DoubleType.DOUBLE;
import static com.facebook.presto.spi.type.VarcharType.VARCHAR;
import static com.facebook.presto.type.TypeUtils.hashPosition;
import static com.facebook.presto.type.TypeUtils.positionEqualsPosition;
import static org.testng.Assert.assertEquals;
import static org.testng.Assert.assertTrue;
public class TestJoinCompiler
{
private static final JoinCompiler joinCompiler = new JoinCompiler();
@DataProvider(name = "hashEnabledValues")
public static Object[][] hashEnabledValuesProvider()
{
return new Object[][] {{true}, {false}};
}
@Test(dataProvider = "hashEnabledValues")
public void testSingleChannel(boolean hashEnabled)
throws Exception
{
List<Type> joinTypes = ImmutableList.of(VARCHAR);
List<Integer> joinChannels = Ints.asList(0);
// compile a single channel hash strategy
PagesHashStrategyFactory pagesHashStrategyFactory = joinCompiler.compilePagesHashStrategyFactory(joinTypes, joinChannels);
// create hash strategy with a single channel blocks -- make sure there is some overlap in values
List<Block> channel = ImmutableList.of(
BlockAssertions.createStringSequenceBlock(10, 20),
BlockAssertions.createStringSequenceBlock(20, 30),
BlockAssertions.createStringSequenceBlock(15, 25));
Optional<Integer> hashChannel = Optional.empty();
List<List<Block>> channels = ImmutableList.of(channel);
if (hashEnabled) {
ImmutableList.Builder<Block> hashChannelBuilder = ImmutableList.builder();
for (Block block : channel) {
hashChannelBuilder.add(TypeUtils.getHashBlock(joinTypes, block));
}
hashChannel = Optional.of(1);
channels = ImmutableList.of(channel, hashChannelBuilder.build());
}
PagesHashStrategy hashStrategy = pagesHashStrategyFactory.createPagesHashStrategy(channels, hashChannel);
// verify channel count
assertEquals(hashStrategy.getChannelCount(), 1);
// verify hashStrategy is consistent with equals and hash code from block
for (int leftBlockIndex = 0; leftBlockIndex < channel.size(); leftBlockIndex++) {
Block leftBlock = channel.get(leftBlockIndex);
PageBuilder pageBuilder = new PageBuilder(ImmutableList.of(VARCHAR));
for (int leftBlockPosition = 0; leftBlockPosition < leftBlock.getPositionCount(); leftBlockPosition++) {
// hash code of position must match block hash
assertEquals(hashStrategy.hashPosition(leftBlockIndex, leftBlockPosition), hashPosition(VARCHAR, leftBlock, leftBlockPosition));
// position must be equal to itself
assertTrue(hashStrategy.positionEqualsPositionIgnoreNulls(leftBlockIndex, leftBlockPosition, leftBlockIndex, leftBlockPosition));
// check equality of every position against every other position in the block
for (int rightBlockIndex = 0; rightBlockIndex < channel.size(); rightBlockIndex++) {
Block rightBlock = channel.get(rightBlockIndex);
for (int rightBlockPosition = 0; rightBlockPosition < rightBlock.getPositionCount(); rightBlockPosition++) {
boolean expected = positionEqualsPosition(VARCHAR, leftBlock, leftBlockPosition, rightBlock, rightBlockPosition);
assertEquals(hashStrategy.positionEqualsRow(leftBlockIndex, leftBlockPosition, rightBlockPosition, new Page(rightBlock)), expected);
assertEquals(hashStrategy.rowEqualsRow(leftBlockPosition, new Page(leftBlock), rightBlockPosition, new Page(rightBlock)), expected);
assertEquals(hashStrategy.positionEqualsRowIgnoreNulls(leftBlockIndex, leftBlockPosition, rightBlockPosition, new Page(rightBlock)), expected);
assertEquals(hashStrategy.positionEqualsPositionIgnoreNulls(leftBlockIndex, leftBlockPosition, rightBlockIndex, rightBlockPosition), expected);
assertEquals(hashStrategy.positionEqualsPosition(leftBlockIndex, leftBlockPosition, rightBlockIndex, rightBlockPosition), expected);
}
}
// check equality of every position against every other position in the block cursor
for (int rightBlockIndex = 0; rightBlockIndex < channel.size(); rightBlockIndex++) {
Block rightBlock = channel.get(rightBlockIndex);
for (int rightBlockPosition = 0; rightBlockPosition < rightBlock.getPositionCount(); rightBlockPosition++) {
boolean expected = positionEqualsPosition(VARCHAR, leftBlock, leftBlockPosition, rightBlock, rightBlockPosition);
assertEquals(hashStrategy.positionEqualsRow(leftBlockIndex, leftBlockPosition, rightBlockPosition, new Page(rightBlock)), expected);
assertEquals(hashStrategy.rowEqualsRow(leftBlockPosition, new Page(leftBlock), rightBlockPosition, new Page(rightBlock)), expected);
assertEquals(hashStrategy.positionEqualsRowIgnoreNulls(leftBlockIndex, leftBlockPosition, rightBlockPosition, new Page(rightBlock)), expected);
assertEquals(hashStrategy.positionEqualsPositionIgnoreNulls(leftBlockIndex, leftBlockPosition, rightBlockIndex, rightBlockPosition), expected);
assertEquals(hashStrategy.positionEqualsPosition(leftBlockIndex, leftBlockPosition, rightBlockIndex, rightBlockPosition), expected);
}
}
// write position to output block
pageBuilder.declarePosition();
hashStrategy.appendTo(leftBlockIndex, leftBlockPosition, pageBuilder, 0);
}
// verify output block matches
assertBlockEquals(VARCHAR, pageBuilder.build().getBlock(0), leftBlock);
}
}
@Test(dataProvider = "hashEnabledValues")
public void testMultiChannel(boolean hashEnabled)
throws Exception
{
// compile a single channel hash strategy
JoinCompiler joinCompiler = new JoinCompiler();
List<Type> types = ImmutableList.of(VARCHAR, VARCHAR, BIGINT, DOUBLE, BOOLEAN, VARCHAR);
List<Type> joinTypes = ImmutableList.of(VARCHAR, BIGINT, DOUBLE, BOOLEAN);
List<Type> outputTypes = ImmutableList.of(VARCHAR, BIGINT, DOUBLE, BOOLEAN, VARCHAR);
List<Integer> joinChannels = Ints.asList(1, 2, 3, 4);
List<Integer> outputChannels = Ints.asList(1, 2, 3, 4, 0);
// crate hash strategy with a single channel blocks -- make sure there is some overlap in values
List<Block> extraChannel = ImmutableList.of(
BlockAssertions.createStringSequenceBlock(10, 20),
BlockAssertions.createStringSequenceBlock(20, 30),
BlockAssertions.createStringSequenceBlock(15, 25));
List<Block> varcharChannel = ImmutableList.of(
BlockAssertions.createStringSequenceBlock(10, 20),
BlockAssertions.createStringSequenceBlock(20, 30),
BlockAssertions.createStringSequenceBlock(15, 25));
List<Block> longChannel = ImmutableList.of(
BlockAssertions.createLongSequenceBlock(10, 20),
BlockAssertions.createLongSequenceBlock(20, 30),
BlockAssertions.createLongSequenceBlock(15, 25));
List<Block> doubleChannel = ImmutableList.of(
BlockAssertions.createDoubleSequenceBlock(10, 20),
BlockAssertions.createDoubleSequenceBlock(20, 30),
BlockAssertions.createDoubleSequenceBlock(15, 25));
List<Block> booleanChannel = ImmutableList.of(
BlockAssertions.createBooleanSequenceBlock(10, 20),
BlockAssertions.createBooleanSequenceBlock(20, 30),
BlockAssertions.createBooleanSequenceBlock(15, 25));
List<Block> extraUnusedChannel = ImmutableList.of(
BlockAssertions.createBooleanSequenceBlock(10, 20),
BlockAssertions.createBooleanSequenceBlock(20, 30),
BlockAssertions.createBooleanSequenceBlock(15, 25));
Optional<Integer> hashChannel = Optional.empty();
ImmutableList<List<Block>> channels = ImmutableList.of(extraChannel, varcharChannel, longChannel, doubleChannel, booleanChannel, extraUnusedChannel);
List<Block> precomputedHash = ImmutableList.of();
if (hashEnabled) {
ImmutableList.Builder<Block> hashChannelBuilder = ImmutableList.builder();
for (int i = 0; i < 3; i++) {
hashChannelBuilder.add(TypeUtils.getHashBlock(joinTypes, varcharChannel.get(i), longChannel.get(i), doubleChannel.get(i), booleanChannel.get(i)));
}
hashChannel = Optional.of(6);
precomputedHash = hashChannelBuilder.build();
channels = ImmutableList.of(extraChannel, varcharChannel, longChannel, doubleChannel, booleanChannel, extraUnusedChannel, precomputedHash);
types = ImmutableList.of(VARCHAR, VARCHAR, BIGINT, DOUBLE, BOOLEAN, VARCHAR, BIGINT);
outputTypes = ImmutableList.of(VARCHAR, BIGINT, DOUBLE, BOOLEAN, VARCHAR, BIGINT);
outputChannels = Ints.asList(1, 2, 3, 4, 0, 6);
}
PagesHashStrategyFactory pagesHashStrategyFactory = joinCompiler.compilePagesHashStrategyFactory(types, joinChannels, Optional.of(outputChannels));
PagesHashStrategy hashStrategy = pagesHashStrategyFactory.createPagesHashStrategy(channels, hashChannel);
// todo add tests for filter function
PagesHashStrategy expectedHashStrategy = new SimplePagesHashStrategy(types, outputChannels, channels, joinChannels, hashChannel, Optional.empty());
// verify channel count
assertEquals(hashStrategy.getChannelCount(), outputChannels.size());
// verify size
long sizeInBytes = channels.stream()
.flatMap(List::stream)
.mapToLong(Block::getRetainedSizeInBytes)
.sum();
assertEquals(hashStrategy.getSizeInBytes(), sizeInBytes);
// verify hashStrategy is consistent with equals and hash code from block
for (int leftBlockIndex = 0; leftBlockIndex < varcharChannel.size(); leftBlockIndex++) {
PageBuilder pageBuilder = new PageBuilder(outputTypes);
Block[] leftBlocks = new Block[4];
leftBlocks[0] = varcharChannel.get(leftBlockIndex);
leftBlocks[1] = longChannel.get(leftBlockIndex);
leftBlocks[2] = doubleChannel.get(leftBlockIndex);
leftBlocks[3] = booleanChannel.get(leftBlockIndex);
int leftPositionCount = varcharChannel.get(leftBlockIndex).getPositionCount();
for (int leftBlockPosition = 0; leftBlockPosition < leftPositionCount; leftBlockPosition++) {
// hash code of position must match block hash
assertEquals(
hashStrategy.hashPosition(leftBlockIndex, leftBlockPosition),
expectedHashStrategy.hashPosition(leftBlockIndex, leftBlockPosition));
// position must be equal to itself
assertTrue(hashStrategy.positionEqualsPositionIgnoreNulls(leftBlockIndex, leftBlockPosition, leftBlockIndex, leftBlockPosition));
assertTrue(hashStrategy.positionEqualsPosition(leftBlockIndex, leftBlockPosition, leftBlockIndex, leftBlockPosition));
// check equality of every position against every other position in the block
for (int rightBlockIndex = 0; rightBlockIndex < varcharChannel.size(); rightBlockIndex++) {
Block rightBlock = varcharChannel.get(rightBlockIndex);
for (int rightBlockPosition = 0; rightBlockPosition < rightBlock.getPositionCount(); rightBlockPosition++) {
assertEquals(
hashStrategy.positionEqualsPositionIgnoreNulls(leftBlockIndex, leftBlockPosition, rightBlockIndex, rightBlockPosition),
expectedHashStrategy.positionEqualsPositionIgnoreNulls(leftBlockIndex, leftBlockPosition, rightBlockIndex, rightBlockPosition));
assertEquals(
hashStrategy.positionEqualsPosition(leftBlockIndex, leftBlockPosition, rightBlockIndex, rightBlockPosition),
expectedHashStrategy.positionEqualsPosition(leftBlockIndex, leftBlockPosition, rightBlockIndex, rightBlockPosition));
}
}
// check equality of every position against every other position in the block cursor
for (int rightBlockIndex = 0; rightBlockIndex < varcharChannel.size(); rightBlockIndex++) {
Block[] rightBlocks = new Block[4];
rightBlocks[0] = varcharChannel.get(rightBlockIndex);
rightBlocks[1] = longChannel.get(rightBlockIndex);
rightBlocks[2] = doubleChannel.get(rightBlockIndex);
rightBlocks[3] = booleanChannel.get(rightBlockIndex);
int rightPositionCount = varcharChannel.get(rightBlockIndex).getPositionCount();
for (int rightPosition = 0; rightPosition < rightPositionCount; rightPosition++) {
boolean expected = expectedHashStrategy.positionEqualsRow(leftBlockIndex, leftBlockPosition, rightPosition, new Page(rightBlocks));
assertEquals(hashStrategy.positionEqualsRow(leftBlockIndex, leftBlockPosition, rightPosition, new Page(rightBlocks)), expected);
assertEquals(hashStrategy.rowEqualsRow(leftBlockPosition, new Page(leftBlocks), rightPosition, new Page(rightBlocks)), expected);
assertEquals(hashStrategy.positionEqualsRowIgnoreNulls(leftBlockIndex, leftBlockPosition, rightPosition, new Page(rightBlocks)), expected);
}
}
// write position to output block
pageBuilder.declarePosition();
hashStrategy.appendTo(leftBlockIndex, leftBlockPosition, pageBuilder, 0);
}
// verify output block matches
Page page = pageBuilder.build();
if (hashEnabled) {
assertPageEquals(outputTypes, page, new Page(
varcharChannel.get(leftBlockIndex),
longChannel.get(leftBlockIndex),
doubleChannel.get(leftBlockIndex),
booleanChannel.get(leftBlockIndex),
extraChannel.get(leftBlockIndex),
precomputedHash.get(leftBlockIndex)));
}
else {
assertPageEquals(outputTypes, page, new Page(
varcharChannel.get(leftBlockIndex),
longChannel.get(leftBlockIndex),
doubleChannel.get(leftBlockIndex),
booleanChannel.get(leftBlockIndex),
extraChannel.get(leftBlockIndex)));
}
}
}
}