Package com.facebook.presto.spi.block

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

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        }

        @Override
        protected void processIntermediate(Block block)
        {
            BlockCursor intermediates = block.cursor();

            for (int position = 0; position < block.getPositionCount(); position++) {
                checkState(intermediates.advanceNextPosition());
                count += intermediates.getLong();
            }
        }
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        @Override
        protected void processInput(GroupByIdBlock groupIdsBlock, Block valuesBlock, Optional<Block> maskBlock, Optional<Block> sampleWeightBlock)
        {
            maxValues.ensureCapacity(groupIdsBlock.getGroupCount());

            BlockCursor values = valuesBlock.cursor();

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

                // skip null values
                if (!values.isNull()) {
                    long groupId = groupIdsBlock.getGroupId(position);

                    Slice value = values.getSlice();
                    Slice currentValue = maxValues.get(groupId);
                    if (currentValue == null || value.compareTo(currentValue) > 0) {
                        maxValues.set(groupId, value);

                        // update size
                        if (currentValue != null) {
                            sizeOfValues -= currentValue.length();
                        }
                        sizeOfValues += value.length();
                    }
                }
            }
            checkState(!values.advanceNextPosition());
        }
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        }

        @Override
        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()) {
                    max = max(max, values.getSlice());
                }
            }
        }
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        @Override
        protected void processInput(GroupByIdBlock groupIdsBlock, Block valuesBlock, Optional<Block> maskBlock, Optional<Block> sampleWeightBlock)
        {
            counts.ensureCapacity(groupIdsBlock.getGroupCount());
            samples.ensureCapacity(groupIdsBlock.getGroupCount());
            BlockCursor values = valuesBlock.cursor();
            BlockCursor sampleWeights = sampleWeightBlock.get().cursor();
            BlockCursor masks = null;
            if (maskBlock.isPresent()) {
                masks = maskBlock.get().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");
                checkState(values.advanceNextPosition(), "failed to advance values cursor");
                long weight = values.isNull() ? 0 : SimpleAggregationFunction.computeSampleWeight(masks, sampleWeights);
                counts.add(groupId, weight);
                if (weight > 0) {
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        public void processIntermediate(GroupByIdBlock groupIdsBlock, Block block)
        {
            counts.ensureCapacity(groupIdsBlock.getGroupCount());
            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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        }

        @Override
        protected void processInput(Block block, Optional<Block> maskBlock, Optional<Block> sampleWeightBlock)
        {
            BlockCursor values = block.cursor();
            BlockCursor sampleWeights = sampleWeightBlock.get().cursor();
            BlockCursor masks = null;
            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);
                count += weight;
                if (weight > 0) {
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        }

        @Override
        public void processIntermediate(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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        @Override
        protected void processInput(GroupByIdBlock groupIdsBlock, Block valuesBlock, Optional<Block> maskBlock, Optional<Block> sampleWeightBlock)
        {
            estimators.ensureCapacity(groupIdsBlock.getGroupCount());

            BlockCursor values = valuesBlock.cursor();
            BlockCursor masks = null;
            if (maskBlock.isPresent()) {
                masks = maskBlock.get().cursor();
            }

            for (int position = 0; position < groupIdsBlock.getPositionCount(); position++) {
                checkState(values.advanceNextPosition());
                checkState(masks == null || masks.advanceNextPosition());

                // skip null values
                if (!values.isNull() && (masks == null || masks.getBoolean())) {
                    long groupId = groupIdsBlock.getGroupId(position);

                    HyperLogLog hll = estimators.get(groupId);
                    if (hll == null) {
                        hll = HyperLogLog.newInstance(NUMBER_OF_BUCKETS);
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        @Override
        protected void processIntermediate(GroupByIdBlock groupIdsBlock, Block valuesBlock)
        {
            estimators.ensureCapacity(groupIdsBlock.getGroupCount());

            BlockCursor intermediates = valuesBlock.cursor();

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

                // skip null values
                if (!intermediates.isNull()) {
                    long groupId = groupIdsBlock.getGroupId(position);

                    HyperLogLog input = HyperLogLog.newInstance(intermediates.getSlice());

                    HyperLogLog previous = estimators.get(groupId);
                    if (previous == null) {
                        estimators.set(groupId, input);
                        sizeOfValues += input.estimatedInMemorySize();
                    }
                    else {
                        sizeOfValues -= previous.estimatedInMemorySize();
                        previous.mergeWith(input);
                        sizeOfValues += previous.estimatedInMemorySize();
                    }
                }
            }
            checkState(!intermediates.advanceNextPosition());
        }
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        protected void processInput(GroupByIdBlock groupIdsBlock, Block valuesBlock, Optional<Block> maskBlock, Optional<Block> sampleWeightBlock)
        {
            notNull.ensureCapacity(groupIdsBlock.getGroupCount());
            minValues.ensureCapacity(groupIdsBlock.getGroupCount(), Double.POSITIVE_INFINITY);

            BlockCursor values = valuesBlock.cursor();

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

                long groupId = groupIdsBlock.getGroupId(position);

                if (!values.isNull()) {
                    notNull.set(groupId, true);

                    double value = values.getDouble();
                    value = Math.min(value, minValues.get(groupId));
                    minValues.set(groupId, value);
                }
            }
            checkState(!values.advanceNextPosition());
        }
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