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Example 1 with PagesHashStrategyFactory

use of io.trino.sql.gen.JoinCompiler.PagesHashStrategyFactory in project trino by trinodb.

the class TestJoinCompiler method testDistinctFrom.

@Test
public void testDistinctFrom() {
    List<Type> joinTypes = ImmutableList.of(DOUBLE);
    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.createDoubleSequenceBlock(10, 20), BlockAssertions.createDoublesBlock(Double.NaN, null, Double.NaN, 1.0, null), BlockAssertions.createDoubleSequenceBlock(20, 30), BlockAssertions.createDoubleSequenceBlock(15, 25));
    List<List<Block>> channels = ImmutableList.of(channel);
    PagesHashStrategy hashStrategy = pagesHashStrategyFactory.createPagesHashStrategy(channels, OptionalInt.empty());
    // verify channel count
    assertEquals(hashStrategy.getChannelCount(), 1);
    BlockTypeOperators blockTypeOperators = new BlockTypeOperators();
    BlockPositionIsDistinctFrom distinctFromOperator = blockTypeOperators.getDistinctFromOperator(DOUBLE);
    // verify hashStrategy is consistent with DISTINCT from block
    for (int leftBlockIndex = 0; leftBlockIndex < channel.size(); leftBlockIndex++) {
        Block leftBlock = channel.get(leftBlockIndex);
        for (int leftBlockPosition = 0; leftBlockPosition < leftBlock.getPositionCount(); leftBlockPosition++) {
            // position must not be distinct from itself
            assertTrue(hashStrategy.positionNotDistinctFromPosition(leftBlockIndex, leftBlockPosition, leftBlockIndex, leftBlockPosition));
            // check distinctiveness 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 expectedNotDistinct = !distinctFromOperator.isDistinctFrom(leftBlock, leftBlockPosition, rightBlock, rightBlockPosition);
                    assertEquals(hashStrategy.positionNotDistinctFromRow(leftBlockIndex, leftBlockPosition, rightBlockPosition, new Page(rightBlock)), expectedNotDistinct);
                    assertEquals(hashStrategy.rowNotDistinctFromRow(leftBlockPosition, new Page(leftBlock), rightBlockPosition, new Page(rightBlock)), expectedNotDistinct);
                    assertEquals(hashStrategy.positionNotDistinctFromPosition(leftBlockIndex, leftBlockPosition, rightBlockIndex, rightBlockPosition), expectedNotDistinct);
                }
            }
            // 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 expectedNotDistinct = !distinctFromOperator.isDistinctFrom(leftBlock, leftBlockPosition, rightBlock, rightBlockPosition);
                    assertEquals(hashStrategy.positionNotDistinctFromRow(leftBlockIndex, leftBlockPosition, rightBlockPosition, new Page(rightBlock)), expectedNotDistinct);
                    assertEquals(hashStrategy.rowNotDistinctFromRow(leftBlockPosition, new Page(leftBlock), rightBlockPosition, new Page(rightBlock)), expectedNotDistinct);
                    assertEquals(hashStrategy.positionNotDistinctFromPosition(leftBlockIndex, leftBlockPosition, rightBlockIndex, rightBlockPosition), expectedNotDistinct);
                }
            }
        }
    }
}
Also used : PagesHashStrategyFactory(io.trino.sql.gen.JoinCompiler.PagesHashStrategyFactory) Page(io.trino.spi.Page) Type(io.trino.spi.type.Type) PagesHashStrategy(io.trino.operator.PagesHashStrategy) SimplePagesHashStrategy(io.trino.operator.SimplePagesHashStrategy) BlockTypeOperators(io.trino.type.BlockTypeOperators) BlockPositionIsDistinctFrom(io.trino.type.BlockTypeOperators.BlockPositionIsDistinctFrom) Block(io.trino.spi.block.Block) ImmutableList(com.google.common.collect.ImmutableList) List(java.util.List) Test(org.testng.annotations.Test)

Example 2 with PagesHashStrategyFactory

use of io.trino.sql.gen.JoinCompiler.PagesHashStrategyFactory in project trino by trinodb.

the class TestJoinCompiler method testMultiChannel.

@Test(dataProvider = "hashEnabledValues")
public void testMultiChannel(boolean hashEnabled) {
    // compile a single channel hash strategy
    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));
    OptionalInt hashChannel = OptionalInt.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(TypeTestUtils.getHashBlock(joinTypes, varcharChannel.get(i), longChannel.get(i), doubleChannel.get(i), booleanChannel.get(i)));
        }
        hashChannel = OptionalInt.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(), blockTypeOperators);
    // verify channel count
    assertEquals(hashStrategy.getChannelCount(), outputChannels.size());
    // verify size
    int instanceSize = ClassLayout.parseClass(hashStrategy.getClass()).instanceSize();
    long sizeInBytes = instanceSize + 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));
            assertTrue(hashStrategy.positionNotDistinctFromPosition(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));
                    assertEquals(hashStrategy.positionNotDistinctFromPosition(leftBlockIndex, leftBlockPosition, rightBlockIndex, rightBlockPosition), expectedHashStrategy.positionNotDistinctFromPosition(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));
                    boolean expectedNotDistinct = expectedHashStrategy.positionNotDistinctFromRow(leftBlockIndex, leftBlockPosition, rightPosition, new Page(rightBlocks));
                    assertEquals(hashStrategy.positionEqualsRow(leftBlockIndex, leftBlockPosition, rightPosition, new Page(rightBlocks)), expected);
                    assertEquals(hashStrategy.positionNotDistinctFromRow(leftBlockIndex, leftBlockPosition, rightPosition, new Page(rightBlocks)), expectedNotDistinct);
                    assertEquals(hashStrategy.rowEqualsRow(leftBlockPosition, new Page(leftBlocks), rightPosition, new Page(rightBlocks)), expected);
                    assertEquals(hashStrategy.rowNotDistinctFromRow(leftBlockPosition, new Page(leftBlocks), rightPosition, new Page(rightBlocks)), expectedNotDistinct);
                    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)));
        }
    }
}
Also used : PagesHashStrategyFactory(io.trino.sql.gen.JoinCompiler.PagesHashStrategyFactory) ImmutableList(com.google.common.collect.ImmutableList) Page(io.trino.spi.Page) OptionalInt(java.util.OptionalInt) PageBuilder(io.trino.spi.PageBuilder) SimplePagesHashStrategy(io.trino.operator.SimplePagesHashStrategy) Type(io.trino.spi.type.Type) PagesHashStrategy(io.trino.operator.PagesHashStrategy) SimplePagesHashStrategy(io.trino.operator.SimplePagesHashStrategy) Block(io.trino.spi.block.Block) ImmutableList(com.google.common.collect.ImmutableList) List(java.util.List) Test(org.testng.annotations.Test)

Example 3 with PagesHashStrategyFactory

use of io.trino.sql.gen.JoinCompiler.PagesHashStrategyFactory in project trino by trinodb.

the class TestJoinCompiler method testSingleChannel.

@Test(dataProvider = "hashEnabledValues")
public void testSingleChannel(boolean hashEnabled) {
    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));
    OptionalInt hashChannel = OptionalInt.empty();
    List<List<Block>> channels = ImmutableList.of(channel);
    if (hashEnabled) {
        ImmutableList.Builder<Block> hashChannelBuilder = ImmutableList.builder();
        for (Block block : channel) {
            hashChannelBuilder.add(TypeTestUtils.getHashBlock(joinTypes, block));
        }
        hashChannel = OptionalInt.of(1);
        channels = ImmutableList.of(channel, hashChannelBuilder.build());
    }
    PagesHashStrategy hashStrategy = pagesHashStrategyFactory.createPagesHashStrategy(channels, hashChannel);
    // verify channel count
    assertEquals(hashStrategy.getChannelCount(), 1);
    BlockTypeOperators blockTypeOperators = new BlockTypeOperators();
    BlockPositionEqual equalOperator = blockTypeOperators.getEqualOperator(VARCHAR);
    BlockPositionIsDistinctFrom distinctFromOperator = blockTypeOperators.getDistinctFromOperator(VARCHAR);
    BlockPositionHashCode hashCodeOperator = blockTypeOperators.getHashCodeOperator(VARCHAR);
    // 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), hashCodeOperator.hashCodeNullSafe(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 = equalOperator.equalNullSafe(leftBlock, leftBlockPosition, rightBlock, rightBlockPosition);
                    boolean expectedNotDistinct = !distinctFromOperator.isDistinctFrom(leftBlock, leftBlockPosition, rightBlock, rightBlockPosition);
                    assertEquals(hashStrategy.positionEqualsRow(leftBlockIndex, leftBlockPosition, rightBlockPosition, new Page(rightBlock)), expected);
                    assertEquals(hashStrategy.positionNotDistinctFromRow(leftBlockIndex, leftBlockPosition, rightBlockPosition, new Page(rightBlock)), expectedNotDistinct);
                    assertEquals(hashStrategy.rowEqualsRow(leftBlockPosition, new Page(leftBlock), rightBlockPosition, new Page(rightBlock)), expected);
                    assertEquals(hashStrategy.rowNotDistinctFromRow(leftBlockPosition, new Page(leftBlock), rightBlockPosition, new Page(rightBlock)), expectedNotDistinct);
                    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);
                    assertEquals(hashStrategy.positionNotDistinctFromPosition(leftBlockIndex, leftBlockPosition, rightBlockIndex, rightBlockPosition), expectedNotDistinct);
                }
            }
            // 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 = equalOperator.equalNullSafe(leftBlock, leftBlockPosition, rightBlock, rightBlockPosition);
                    boolean expectedNotDistinct = !distinctFromOperator.isDistinctFrom(leftBlock, leftBlockPosition, rightBlock, rightBlockPosition);
                    assertEquals(hashStrategy.positionEqualsRow(leftBlockIndex, leftBlockPosition, rightBlockPosition, new Page(rightBlock)), expected);
                    assertEquals(hashStrategy.positionNotDistinctFromRow(leftBlockIndex, leftBlockPosition, rightBlockPosition, new Page(rightBlock)), expectedNotDistinct);
                    assertEquals(hashStrategy.rowEqualsRow(leftBlockPosition, new Page(leftBlock), rightBlockPosition, new Page(rightBlock)), expected);
                    assertEquals(hashStrategy.rowNotDistinctFromRow(leftBlockPosition, new Page(leftBlock), rightBlockPosition, new Page(rightBlock)), expectedNotDistinct);
                    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);
                    assertEquals(hashStrategy.positionNotDistinctFromPosition(leftBlockIndex, leftBlockPosition, rightBlockIndex, rightBlockPosition), expectedNotDistinct);
                }
            }
            // write position to output block
            pageBuilder.declarePosition();
            hashStrategy.appendTo(leftBlockIndex, leftBlockPosition, pageBuilder, 0);
        }
        // verify output block matches
        assertBlockEquals(VARCHAR, pageBuilder.build().getBlock(0), leftBlock);
    }
}
Also used : PagesHashStrategyFactory(io.trino.sql.gen.JoinCompiler.PagesHashStrategyFactory) ImmutableList(com.google.common.collect.ImmutableList) Page(io.trino.spi.Page) OptionalInt(java.util.OptionalInt) PageBuilder(io.trino.spi.PageBuilder) BlockPositionEqual(io.trino.type.BlockTypeOperators.BlockPositionEqual) Type(io.trino.spi.type.Type) PagesHashStrategy(io.trino.operator.PagesHashStrategy) SimplePagesHashStrategy(io.trino.operator.SimplePagesHashStrategy) BlockTypeOperators(io.trino.type.BlockTypeOperators) BlockPositionIsDistinctFrom(io.trino.type.BlockTypeOperators.BlockPositionIsDistinctFrom) Block(io.trino.spi.block.Block) ImmutableList(com.google.common.collect.ImmutableList) List(java.util.List) BlockPositionHashCode(io.trino.type.BlockTypeOperators.BlockPositionHashCode) Test(org.testng.annotations.Test)

Aggregations

ImmutableList (com.google.common.collect.ImmutableList)3 PagesHashStrategy (io.trino.operator.PagesHashStrategy)3 SimplePagesHashStrategy (io.trino.operator.SimplePagesHashStrategy)3 Page (io.trino.spi.Page)3 Block (io.trino.spi.block.Block)3 Type (io.trino.spi.type.Type)3 PagesHashStrategyFactory (io.trino.sql.gen.JoinCompiler.PagesHashStrategyFactory)3 List (java.util.List)3 Test (org.testng.annotations.Test)3 PageBuilder (io.trino.spi.PageBuilder)2 BlockTypeOperators (io.trino.type.BlockTypeOperators)2 BlockPositionIsDistinctFrom (io.trino.type.BlockTypeOperators.BlockPositionIsDistinctFrom)2 OptionalInt (java.util.OptionalInt)2 BlockPositionEqual (io.trino.type.BlockTypeOperators.BlockPositionEqual)1 BlockPositionHashCode (io.trino.type.BlockTypeOperators.BlockPositionHashCode)1