Package com.facebook.presto.spi.block

Examples of com.facebook.presto.spi.block.Block

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        long rightPageAddress = valueAddresses.getLong(rightPosition);
        int rightBlockIndex = decodeSliceIndex(rightPageAddress);
        int rightBlockPosition = decodePosition(rightPageAddress);

        for (int channel : channels) {
            Block leftBlock = this.channels[channel].get(leftBlockIndex);
            Block rightBlock = this.channels[channel].get(rightBlockIndex);

            if (!leftBlock.equalTo(leftBlockPosition, rightBlock, rightBlockPosition)) {
                return false;
            }
        }
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        int blockIndex = decodeSliceIndex(pageAddress);
        int blockPosition = decodePosition(pageAddress);

        int result = 0;
        for (int channel : channels) {
            Block block = this.channels[channel].get(blockIndex);
            result = 31 * result + block.hash(blockPosition);
        }
        return result;
    }
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            this.block = block;
        }

        public Block getRegionAndAdvance(int length)
        {
            Block region = block.getRegion(position, length);
            position += length;
            return region;
        }
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    public void addInput(Page page)
    {
        checkNotNull(page, "page is null");
        checkState(state == State.RUNNING, "Operator is %s", state);

        Block sampleWeightBlock = null;
        if (sampleWeightChannel.isPresent()) {
            sampleWeightBlock = page.getBlock(sampleWeightChannel.get());
        }

        Block[] blocks = new Block[inputChannels.size()];
        for (int outputChannel = 0; outputChannel < inputChannels.size(); outputChannel++) {
            blocks[outputChannel] = page.getBlock(inputChannels.get(outputChannel));
        }

        int rows = 0;
        for (int position = 0; position < page.getPositionCount(); position++) {
            long sampleWeight = 1;
            if (sampleWeightBlock != null) {
                sampleWeight = sampleWeightBlock.getLong(position);
            }
            rows += sampleWeight;
            recordSink.beginRecord(sampleWeight);
            for (int i = 0; i < blocks.length; i++) {
                writeField(position, blocks[i], recordTypes.get(i));
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    public void addInput(Page page)
    {
        checkNotNull(page, "page is null");
        checkState(state == State.RUNNING, "Operator is %s", state);

        Block rowCountBlock = page.getBlock(0);
        Block fragmentBlock = page.getBlock(1);
        for (int position = 0; position < page.getPositionCount(); position++) {
            rowCount += rowCountBlock.getLong(position);
            fragmentBuilder.add(fragmentBlock.getSlice(position).toStringUtf8());
        }
    }
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        // create the block builder for the new boolean column
        // we know the exact size required for the block
        BlockBuilder blockBuilder = BOOLEAN.createFixedSizeBlockBuilder(page.getPositionCount());

        Block probeJoinBlock = page.getBlock(probeJoinChannel);

        // update hashing strategy to use probe cursor
        for (int position = 0; position < page.getPositionCount(); position++) {
            if (probeJoinBlock.isNull(position)) {
                blockBuilder.appendNull();
            }
            else {
                boolean contains = channelSet.contains(position, probeJoinBlock);
                if (!contains && channelSet.containsNull()) {
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            nextPage = page;
        }
        else {
            Block[] blocks = new Block[page.getChannelCount()];
            for (int channel = 0; channel < page.getChannelCount(); channel++) {
                Block block = page.getBlock(channel);
                blocks[channel] = block.getRegion(0, (int) remainingLimit);
            }
            nextPage = new Page((int) remainingLimit, blocks);
            remainingLimit = 0;
        }
    }
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        }
    }

    private void addInputWithSampling(Page page, int sampleWeightChannel)
    {
        Block sampleWeightBlock = page.getBlock(sampleWeightChannel);
        BlockBuilder builder = BIGINT.createBlockBuilder(new BlockBuilderStatus());

        int rowsToCopy = 0;
        // Build the sample weight block, and count how many rows of data to copy
        for (int position = 0; position < sampleWeightBlock.getPositionCount() && remainingLimit > 0; position++) {
            rowsToCopy++;
            long sampleWeight = sampleWeightBlock.getLong(position);
            if (sampleWeight <= remainingLimit) {
                builder.appendLong(sampleWeight);
            }
            else {
                builder.appendLong(remainingLimit);
            }
            remainingLimit -= sampleWeight;
        }

        if (remainingLimit >= 0 && rowsToCopy == page.getPositionCount()) {
            nextPage = page;
        }
        else {
            Block[] blocks = new Block[page.getChannelCount()];
            blocks[sampleWeightChannel] = builder.build();
            for (int channel = 0; channel < page.getChannelCount(); channel++) {
                if (channel == sampleWeightChannel) {
                    continue;
                }
                Block block = page.getBlock(channel);
                blocks[channel] = block.getRegion(0, rowsToCopy);
            }
            nextPage = new Page(rowsToCopy, blocks);
            remainingLimit = 0;
        }
    }
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        checkNotNull(page, "page is null");
        checkState(!finishing, "Operator is finishing");
        checkState(outputPage == null, "Operator still has pending output");
        operatorContext.setMemoryReservation(markDistinctHash.getEstimatedSize());

        Block markerBlock = markDistinctHash.markDistinctRows(page);

        // add the new boolean column to the page
        Block[] sourceBlocks = page.getBlocks();
        Block[] outputBlocks = new Block[sourceBlocks.length + 1]; // +1 for the single boolean output channel
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            // output the group id for this row
            blockBuilder.appendLong(groupId);
        }

        Block block = blockBuilder.build();
        return new GroupByIdBlock(nextGroupId, block);
    }
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