Package com.facebook.presto.operator

Examples of com.facebook.presto.operator.PagesHashStrategy

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        // crate 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));
        PagesHashStrategy hashStrategy = pagesHashStrategyFactory.createPagesHashStrategy(ImmutableList.of(channel));

        // 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.positionEqualsPosition(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++) {
                        assertEquals(
                                hashStrategy.positionEqualsPosition(leftBlockIndex, leftBlockPosition, rightBlockIndex, rightBlockPosition),
                                positionEqualsPosition(VARCHAR, leftBlock, leftBlockPosition, rightBlock, rightBlockPosition));
                    }
                }

                // check equality of every position against every other position in the block cursor
                for (Block rightBlock : channel) {
                    for (int position = 0; position < rightBlock.getPositionCount(); position++) {
                        assertEquals(
                                hashStrategy.positionEqualsRow(leftBlockIndex, leftBlockPosition, position, rightBlock),
                                positionEqualsPosition(VARCHAR, leftBlock, leftBlockPosition, rightBlock, position));
                    }
                }

                // write position to output block
                hashStrategy.appendTo(leftBlockIndex, leftBlockPosition, pageBuilder, 0);
            }

            // verify output block matches
            assertBlockEquals(VARCHAR, pageBuilder.build().getBlock(0), leftBlock);
        }
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        List<Block> booleanChannel = ImmutableList.of(
                BlockAssertions.createBooleanSequenceBlock(10, 20),
                BlockAssertions.createBooleanSequenceBlock(20, 30),
                BlockAssertions.createBooleanSequenceBlock(15, 25));
        ImmutableList<List<Block>> channels = ImmutableList.of(extraChannel, varcharChannel, longChannel, doubleChannel, booleanChannel);
        PagesHashStrategy hashStrategy = pagesHashStrategyFactory.createPagesHashStrategy(channels);

        // verify channel count
        assertEquals(hashStrategy.getChannelCount(), 5);

        PagesHashStrategy expectedHashStrategy = new SimplePagesHashStrategy(types, channels, Ints.asList(1, 2, 3, 4));

        // verify hashStrategy is consistent with equals and hash code from block
        for (int leftBlockIndex = 0; leftBlockIndex < varcharChannel.size(); leftBlockIndex++) {
            PageBuilder pageBuilder = new PageBuilder(types);

            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.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.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++) {
                        assertEquals(
                                hashStrategy.positionEqualsRow(leftBlockIndex, leftBlockPosition, rightPosition, rightBlocks),
                                expectedHashStrategy.positionEqualsRow(leftBlockIndex, leftBlockPosition, rightPosition, rightBlocks));
                    }
                }

                // write position to output block
                hashStrategy.appendTo(leftBlockIndex, leftBlockPosition, pageBuilder, 0);
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            }
        }

        public LookupSource createLookupSource(LongArrayList addresses, List<List<com.facebook.presto.spi.block.Block>> channels, OperatorContext operatorContext)
        {
            PagesHashStrategy pagesHashStrategy = pagesHashStrategyFactory.createPagesHashStrategy(channels);
            try {
                return constructor.newInstance(addresses, pagesHashStrategy, operatorContext);
            }
            catch (Exception e) {
                throw Throwables.propagate(e);
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            }
        }

        public LookupSource createLookupSource(LongArrayList addresses, List<List<RandomAccessBlock>> channels, OperatorContext operatorContext)
        {
            PagesHashStrategy pagesHashStrategy = pagesHashStrategyFactory.createPagesHashStrategy(channels);
            try {
                return constructor.newInstance(addresses, pagesHashStrategy, operatorContext);
            }
            catch (Exception e) {
                throw Throwables.propagate(e);
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            }
        }

        public LookupSource createLookupSource(LongArrayList addresses, List<List<com.facebook.presto.spi.block.Block>> channels, OperatorContext operatorContext)
        {
            PagesHashStrategy pagesHashStrategy = pagesHashStrategyFactory.createPagesHashStrategy(channels);
            try {
                return constructor.newInstance(addresses, pagesHashStrategy, operatorContext);
            }
            catch (Exception e) {
                throw Throwables.propagate(e);
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            }
        }

        public LookupSource createLookupSource(LongArrayList addresses, List<Type> types, List<List<com.facebook.presto.spi.block.Block>> channels, OperatorContext operatorContext)
        {
            PagesHashStrategy pagesHashStrategy = pagesHashStrategyFactory.createPagesHashStrategy(channels);
            try {
                return constructor.newInstance(addresses, types, pagesHashStrategy, operatorContext);
            }
            catch (Exception e) {
                throw Throwables.propagate(e);
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        // crate 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));
        PagesHashStrategy hashStrategy = pagesHashStrategyFactory.createPagesHashStrategy(ImmutableList.of(channel));

        // 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.positionEqualsPosition(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++) {
                        assertEquals(
                                hashStrategy.positionEqualsPosition(leftBlockIndex, leftBlockPosition, rightBlockIndex, rightBlockPosition),
                                positionEqualsPosition(VARCHAR, leftBlock, leftBlockPosition, rightBlock, rightBlockPosition));
                    }
                }

                // check equality of every position against every other position in the block cursor
                for (Block rightBlock : channel) {
                    for (int position = 0; position < rightBlock.getPositionCount(); position++) {
                        assertEquals(
                                hashStrategy.positionEqualsRow(leftBlockIndex, leftBlockPosition, position, rightBlock),
                                positionEqualsPosition(VARCHAR, leftBlock, leftBlockPosition, rightBlock, position));
                    }
                }

                // write position to output block
                hashStrategy.appendTo(leftBlockIndex, leftBlockPosition, pageBuilder, 0);
            }

            // verify output block matches
            assertBlockEquals(VARCHAR, pageBuilder.build().getBlock(0), leftBlock);
        }
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        List<Block> booleanChannel = ImmutableList.of(
                BlockAssertions.createBooleanSequenceBlock(10, 20),
                BlockAssertions.createBooleanSequenceBlock(20, 30),
                BlockAssertions.createBooleanSequenceBlock(15, 25));
        ImmutableList<List<Block>> channels = ImmutableList.of(extraChannel, varcharChannel, longChannel, doubleChannel, booleanChannel);
        PagesHashStrategy hashStrategy = pagesHashStrategyFactory.createPagesHashStrategy(channels);

        // verify channel count
        assertEquals(hashStrategy.getChannelCount(), 5);

        PagesHashStrategy expectedHashStrategy = new SimplePagesHashStrategy(types, channels, Ints.asList(1, 2, 3, 4));

        // verify hashStrategy is consistent with equals and hash code from block
        for (int leftBlockIndex = 0; leftBlockIndex < varcharChannel.size(); leftBlockIndex++) {
            PageBuilder pageBuilder = new PageBuilder(types);

            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.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.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++) {
                        assertEquals(
                                hashStrategy.positionEqualsRow(leftBlockIndex, leftBlockPosition, rightPosition, rightBlocks),
                                expectedHashStrategy.positionEqualsRow(leftBlockIndex, leftBlockPosition, rightPosition, rightBlocks));
                    }
                }

                // write position to output block
                hashStrategy.appendTo(leftBlockIndex, leftBlockPosition, pageBuilder, 0);
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        // crate hash strategy with a single channel blocks -- make sure there is some overlap in values
        List<RandomAccessBlock> channel = ImmutableList.of(
                BlockAssertions.createStringSequenceBlock(10, 20).toRandomAccessBlock(),
                BlockAssertions.createStringSequenceBlock(20, 30).toRandomAccessBlock(),
                BlockAssertions.createStringSequenceBlock(15, 25).toRandomAccessBlock());
        PagesHashStrategy hashStrategy = pagesHashStrategyFactory.createPagesHashStrategy(ImmutableList.of(channel));

        // 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++) {
            RandomAccessBlock 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), leftBlock.hash(leftBlockPosition));

                // position must be equal to itself
                assertTrue(hashStrategy.positionEqualsPosition(leftBlockIndex, leftBlockPosition, leftBlockIndex, leftBlockPosition));

                // check equality of every position against every other position in the block
                for (int rightBlockIndex = 0; rightBlockIndex < channel.size(); rightBlockIndex++) {
                    RandomAccessBlock rightBlock = channel.get(rightBlockIndex);
                    for (int rightBlockPosition = 0; rightBlockPosition < rightBlock.getPositionCount(); rightBlockPosition++) {
                        assertEquals(
                                hashStrategy.positionEqualsPosition(leftBlockIndex, leftBlockPosition, rightBlockIndex, rightBlockPosition),
                                leftBlock.equalTo(leftBlockPosition, rightBlock, rightBlockPosition));
                    }
                }

                // check equality of every position against every other position in the block cursor
                for (RandomAccessBlock rightBlock : channel) {
                    BlockCursor rightCursor = rightBlock.cursor();
                    BlockCursor[] rightCursors = new BlockCursor[]{rightCursor};
                    while (rightCursor.advanceNextPosition()) {
                        assertEquals(
                                hashStrategy.positionEqualsCursors(leftBlockIndex, leftBlockPosition, rightCursors),
                                leftBlock.equalTo(leftBlockPosition, rightCursor));
                    }
                }

                // write position to output block
                hashStrategy.appendTo(leftBlockIndex, leftBlockPosition, pageBuilder, 0);
            }

            // verify output block matches
            assertBlockEquals(pageBuilder.build().getBlock(0), leftBlock);
        }
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        List<RandomAccessBlock> booleanChannel = ImmutableList.of(
                BlockAssertions.createBooleanSequenceBlock(10, 20).toRandomAccessBlock(),
                BlockAssertions.createBooleanSequenceBlock(20, 30).toRandomAccessBlock(),
                BlockAssertions.createBooleanSequenceBlock(15, 25).toRandomAccessBlock());
        ImmutableList<List<RandomAccessBlock>> channels = ImmutableList.of(extraChannel, varcharChannel, longChannel, doubleChannel, booleanChannel);
        PagesHashStrategy hashStrategy = pagesHashStrategyFactory.createPagesHashStrategy(channels);

        // verify channel count
        assertEquals(hashStrategy.getChannelCount(), 5);

        PagesHashStrategy expectedHashStrategy = new SimplePagesHashStrategy(channels, Ints.asList(1, 2, 3, 4));

        // verify hashStrategy is consistent with equals and hash code from block
        for (int leftBlockIndex = 0; leftBlockIndex < varcharChannel.size(); leftBlockIndex++) {
            PageBuilder pageBuilder = new PageBuilder(ImmutableList.of(VARCHAR, VARCHAR, BIGINT, DOUBLE, BOOLEAN));

            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.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++) {
                    RandomAccessBlock rightBlock = varcharChannel.get(rightBlockIndex);
                    for (int rightBlockPosition = 0; rightBlockPosition < rightBlock.getPositionCount(); 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++) {
                    BlockCursor[] rightCursors = new BlockCursor[4];
                    rightCursors[0] = varcharChannel.get(rightBlockIndex).cursor();
                    rightCursors[1] = longChannel.get(rightBlockIndex).cursor();
                    rightCursors[2] = doubleChannel.get(rightBlockIndex).cursor();
                    rightCursors[3] = booleanChannel.get(rightBlockIndex).cursor();

                    int rightPositionCount = varcharChannel.get(rightBlockIndex).getPositionCount();
                    for (int rightPosition = 0; rightPosition < rightPositionCount; rightPosition++) {
                        for (BlockCursor rightCursor : rightCursors) {
                            assertTrue(rightCursor.advanceNextPosition());
                        }

                        assertEquals(
                                hashStrategy.positionEqualsCursors(leftBlockIndex, leftBlockPosition, rightCursors),
                                expectedHashStrategy.positionEqualsCursors(leftBlockIndex, leftBlockPosition, rightCursors));
                    }
                }

                // write position to output block
                hashStrategy.appendTo(leftBlockIndex, leftBlockPosition, pageBuilder, 0);
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Related Classes of com.facebook.presto.operator.PagesHashStrategy

  • com.facebook.presto.sql.gen.JoinCompiler$LookupSourceFactory
  • com.facebook.presto.sql.gen.TestJoinCompiler
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