Examples of com.facebook.presto.spi.block.BlockCursor.advanceNextPosition()

Class com.facebook.presto.spi.block.BlockCursor

Examples of com.facebook.presto.spi.block.BlockCursor.advanceNextPosition()

com.facebook.presto.spi.block.BlockCursor.advanceNextPosition()
Attempts to advance to the next position in this stream.

        protected void processInput(Block block, Optional<Block> maskBlock, Optional<Block> sampleWeightBlock)
        {
            BlockCursor values = block.cursor();


            for (int position = 0; position < block.getPositionCount(); position++) {
                checkState(values.advanceNextPosition());
                if (!values.isNull()) {
                    notNull = true;
                    min = Math.min(min, values.getDouble());
                }
            }

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            BlockCursor sampleWeights = page.getBlock(sampleWeightChannel).cursor();


            for (int position = 0; position < groupIdsBlock.getPositionCount(); position++) {
                long groupId = groupIdsBlock.getGroupId(position);
                checkState(masks == null || masks.advanceNextPosition(), "failed to advance mask cursor");
                checkState(sampleWeights.advanceNextPosition(), "failed to advance weight cursor");
                long weight = SimpleAggregationFunction.computeSampleWeight(masks, sampleWeights);
                counts.add(groupId, weight);
                if (weight > 0) {
                    samples.increment(groupId);
                }

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            samples.ensureCapacity(groupIdsBlock.getGroupCount());


            BlockCursor intermediates = block.cursor();


            for (int position = 0; position < groupIdsBlock.getPositionCount(); position++) {
                checkState(intermediates.advanceNextPosition(), "failed to advance intermediates cursor");


                long groupId = groupIdsBlock.getGroupId(position);
                Slice slice = intermediates.getSlice();
                counts.add(groupId, slice.getLong(COUNT_OFFSET));
                samples.add(groupId, slice.getLong(SAMPLES_OFFSET));

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            }
            BlockCursor sampleWeights = page.getBlock(sampleWeightChannel).cursor();


            for (int i = 0; i < page.getPositionCount(); i++) {
                checkState(masks == null || masks.advanceNextPosition(), "failed to advance mask cursor");
                checkState(sampleWeights.advanceNextPosition(), "failed to advance weight cursor");
                long weight = SimpleAggregationFunction.computeSampleWeight(masks, sampleWeights);
                count += weight;
                if (weight > 0) {
                    samples++;
                }

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        public void addIntermediate(Block block)
        {
            BlockCursor intermediates = block.cursor();


            for (int position = 0; position < block.getPositionCount(); position++) {
                checkState(intermediates.advanceNextPosition(), "failed to advance intermediates cursor");
                Slice slice = intermediates.getSlice();
                count += slice.getLong(COUNT_OFFSET);
                samples += slice.getLong(SAMPLES_OFFSET);
            }
        }

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            BlockCursor sampleWeights = sampleWeightChannel.isPresent() ? page.getBlock(sampleWeightChannel.get()).cursor() : null;


            for (int position = 0; position < groupIdsBlock.getPositionCount(); position++) {
                long groupId = groupIdsBlock.getGroupId(position);
                checkState(masks == null || masks.advanceNextPosition());
                checkState(sampleWeights == null || sampleWeights.advanceNextPosition());
                counts.add(groupId, SimpleAggregationFunction.computeSampleWeight(masks, sampleWeights));
            }
        }


        @Override

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            counts.ensureCapacity(groupIdsBlock.getGroupCount());


            BlockCursor intermediates = block.cursor();


            for (int position = 0; position < groupIdsBlock.getPositionCount(); position++) {
                checkState(intermediates.advanceNextPosition());


                long groupId = groupIdsBlock.getGroupId(position);
                counts.add(groupId, intermediates.getLong());
            }
        }

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                if (sampleWeightChannel.isPresent()) {
                    sampleWeights = page.getBlock(sampleWeightChannel.get()).cursor();
                }
                for (int i = 0; i < page.getPositionCount(); i++) {
                    checkState(masks == null || masks.advanceNextPosition());
                    checkState(sampleWeights == null || sampleWeights.advanceNextPosition());
                    count += SimpleAggregationFunction.computeSampleWeight(masks, sampleWeights);
                }
            }
        }

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        public void addIntermediate(Block block)
        {
            BlockCursor intermediates = block.cursor();


            for (int position = 0; position < block.getPositionCount(); position++) {
                checkState(intermediates.advanceNextPosition());
                count += intermediates.getLong();
            }
        }


        @Override

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            if (maskBlock.isPresent()) {
                masks = maskBlock.get().cursor();
            }


            for (int i = 0; i < block.getPositionCount(); i++) {
                checkState(masks == null || masks.advanceNextPosition(), "failed to advance mask cursor");
                checkState(sampleWeights.advanceNextPosition(), "failed to advance weight cursor");
                checkState(values.advanceNextPosition(), "failed to advance values cursor");
                long weight = values.isNull() ? 0 : SimpleAggregationFunction.computeSampleWeight(masks, sampleWeights);
                if (!values.isNull() && weight > 0) {
                    double value = values.getDouble();

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