Package com.facebook.presto.operator

Examples of com.facebook.presto.operator.PageBuilder

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                pageBuilder.getBlockBuilder(i).append(tuple, i);
            }

            if (pageBuilder.isFull()) {
                flushPage();
                pageBuilder = new PageBuilder(tupleInfos);
            }
            return this;
        }
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            sampleWeightField = columnTypes.size() - 1;
        }
        else {
            sampleWeightField = -1;
        }
        pageBuilder = new PageBuilder(toTypes(columnTypes));
    }
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    @Test
    public void testSum()
            throws Exception
    {
        int sum = 1_000;
        PageBuilder builder = new PageBuilder(ImmutableList.of(BIGINT, BIGINT));
        Random rand = new Random(0);
        for (int i = 0; i < sum; i++) {
            if (rand.nextDouble() < 0.5) {
                builder.getBlockBuilder(0).appendLong(1);
                builder.getBlockBuilder(1).appendLong(2);
            }
        }

        AggregationFunction function = new DeterministicBootstrappedAggregation(createTestingBlockEncodingManager(), LONG_SUM);

        assertApproximateAggregation(function, 1, 0.99, (double) sum, builder.build());
    }
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        int successes = 0;
        Random rand = new Random(0);
        for (int i = 0; i < trials; i++) {
            int sum = 1_000;
            PageBuilder builder = new PageBuilder(ImmutableList.of(BIGINT, BIGINT));
            for (int j = 0; j < sum; j++) {
                if (rand.nextDouble() < 0.5) {
                    builder.getBlockBuilder(0).appendLong(1);
                    builder.getBlockBuilder(1).appendLong(2);
                }
            }

            AggregationFunction function = new DeterministicBootstrappedAggregation(createTestingBlockEncodingManager(), LONG_SUM);

            successes += approximateAggregationWithinErrorBound(function, 1, 0.5, (double) sum, builder.build()) ? 1 : 0;
        }

        // Since we used a confidence of 0.5, successes should have a binomial distribution B(n=20, p=0.5)
        assertTrue(binomial.inverseCumulativeProbability(0.01) < successes && successes < binomial.inverseCumulativeProbability(0.99));
    }
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        private boolean finishing;

        public TpchQuery1Operator(OperatorContext operatorContext)
        {
            this.operatorContext = checkNotNull(operatorContext, "operatorContext is null");
            this.pageBuilder = new PageBuilder(TYPES);
        }
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        private boolean finishing;

        public TpchQuery1Operator(OperatorContext operatorContext)
        {
            this.operatorContext = checkNotNull(operatorContext, "operatorContext is null");
            this.pageBuilder = new PageBuilder(TUPLE_INFOS);
        }
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                outputTypes.add(type);

                channel++;
            }

            PageBuilder pageBuilder = new PageBuilder(outputTypes);
            for (List<Expression> row : node.getRows()) {
                pageBuilder.declarePosition();
                IdentityHashMap<Expression, Type> expressionTypes = getExpressionTypes(context.getSession(), metadata, ImmutableMap.<Symbol, Type>of(), ImmutableList.copyOf(row));
                for (int i = 0; i < row.size(); i++) {
                    // evaluate the literal value
                    Object result = ExpressionInterpreter.expressionInterpreter(row.get(i), metadata, context.getSession(), expressionTypes).evaluate(new BlockCursor[0]);
                    BlockUtils.appendObject(pageBuilder.getBlockBuilder(i), result);
                }
            }

            OperatorFactory operatorFactory = new ValuesOperatorFactory(context.getNextOperatorId(), ImmutableList.of(pageBuilder.build()));
            return new PhysicalOperation(operatorFactory, outputMappings);
        }
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            sampleWeightField = columnTypes.size() - 1;
        }
        else {
            sampleWeightField = -1;
        }
        pageBuilder = new PageBuilder(toTypes(columnTypes));
    }
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        // 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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        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);
            }

            // verify output block matches
            Page page = pageBuilder.build();
            assertPageEquals(types, page, new Page(
                    extraChannel.get(leftBlockIndex),
                    varcharChannel.get(leftBlockIndex),
                    longChannel.get(leftBlockIndex),
                    doubleChannel.get(leftBlockIndex),
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Related Classes of com.facebook.presto.operator.PageBuilder

  • com.facebook.presto.benchmark.HandTpchQuery1$TpchQuery1Operator
  • com.facebook.presto.block.BlockBuilder
  • com.facebook.presto.HashPagePartitionFunction
  • com.facebook.presto.metadata.InternalTable$Builder
  • com.facebook.presto.metadata.NativeRecordSink
  • com.facebook.presto.operator.aggregation.TestBootstrappedAggregation
  • com.facebook.presto.operator.index.IndexLoader$IndexSnapshotBuilder
  • com.facebook.presto.operator.index.IndexSnapshotBuilder
  • com.facebook.presto.raptor.RaptorRecordSink
  • com.facebook.presto.serde.DictionaryEncoder
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