Package com.facebook.presto.block

Examples of com.facebook.presto.block.BlockCursor

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        }

        @Override
        protected void processInput(Block block, Optional<Block> maskBlock)
        {
            BlockCursor values = block.cursor();
            BlockCursor masks = null;
            if (maskBlock.isPresent()) {
                masks = maskBlock.get().cursor();
            }

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

                if (!values.isNull() && (masks == null || masks.getBoolean())) {
                    double inputValue;
                    if (inputIsLong) {
                        inputValue = values.getLong();
                    }
                    else {
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        }

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

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

                if (!values.isNull()) {
                    Slice slice = values.getSlice();
                    long inputCount = getCount(slice);
                    double inputMean = getMean(slice);
                    double inputM2 = getM2(slice);

                    // Use numerically stable variant
                    long newCount = currentCount + inputCount;
                    double newMean = ((currentCount * currentMean) + (inputCount * inputMean)) / newCount;
                    double delta = inputMean - currentMean;
                    double newM2 = currentM2 + inputM2 + ((delta * delta) * (currentCount * inputCount)) / newCount;

                    currentCount = newCount;
                    currentMean = newMean;
                    currentM2 = newM2;
                }
            }
            checkState(!values.advanceNextPosition());
        }
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        protected void processInput(GroupByIdBlock groupIdsBlock, Block valuesBlock, Optional<Block> maskBlock)
        {
            notNull.ensureCapacity(groupIdsBlock.getGroupCount());
            sums.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());

                long groupId = groupIdsBlock.getGroupId(position);

                if (!values.isNull() && (masks == null || masks.getBoolean())) {
                    notNull.set(groupId, true);

                    long value = values.getLong();
                    sums.add(groupId, value);
                }
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        }

        @Override
        protected void processInput(Block block, Optional<Block> maskBlock)
        {
            BlockCursor values = block.cursor();
            BlockCursor masks = null;
            if (maskBlock.isPresent()) {
                masks = maskBlock.get().cursor();
            }

            for (int position = 0; position < block.getPositionCount(); position++) {
                checkState(values.advanceNextPosition());
                checkState(masks == null || masks.advanceNextPosition());
                if (!values.isNull() && (masks == null || masks.getBoolean())) {
                    notNull = true;
                    sum += values.getLong();
                }
            }
        }
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        protected void processInput(GroupByIdBlock groupIdsBlock, Block valuesBlock, Optional<Block> maskBlock)
        {
            notNull.ensureCapacity(groupIdsBlock.getGroupCount());
            sums.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());

                long groupId = groupIdsBlock.getGroupId(position);

                if (!values.isNull() && (masks == null || masks.getBoolean())) {
                    notNull.set(groupId, true);

                    double value = values.getDouble();
                    sums.add(groupId, value);
                }
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        }

        @Override
        protected void processInput(Block block, Optional<Block> maskBlock)
        {
            BlockCursor intermediates = block.cursor();
            BlockCursor masks = null;
            if (maskBlock.isPresent()) {
                masks = maskBlock.get().cursor();
            }

            for (int position = 0; position < block.getPositionCount(); position++) {
                checkState(intermediates.advanceNextPosition());
                checkState(masks == null || masks.advanceNextPosition());
                if (!intermediates.isNull() && (masks == null || masks.getBoolean())) {
                    notNull = true;
                    sum += intermediates.getDouble();
                }
            }
        }
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        @Override
        protected void processInput(GroupByIdBlock groupIdsBlock, Block valuesBlock, Optional<Block> maskBlock)
        {
            counts.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());
                if (!values.isNull() && (masks == null || masks.getBoolean())) {
                    long groupId = groupIdsBlock.getGroupId(position);
                    counts.increment(groupId);
                }
            }
            checkState(!values.advanceNextPosition());
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        @Override
        protected void processIntermediate(GroupByIdBlock groupIdsBlock, Block valuesBlock)
        {
            counts.ensureCapacity(groupIdsBlock.getGroupCount());

            BlockCursor values = valuesBlock.cursor();

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

                if (!values.isNull()) {
                    long groupId = groupIdsBlock.getGroupId(position);
                    counts.add(groupId, values.getLong());
                }
            }
            checkState(!values.advanceNextPosition());
        }
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        }

        @Override
        protected void processInput(Block block, Optional<Block> maskBlock)
        {
            BlockCursor values = block.cursor();
            BlockCursor mask = null;
            if (maskBlock.isPresent()) {
                mask = maskBlock.get().cursor();
            }

            for (int position = 0; position < block.getPositionCount(); position++) {
                checkState(values.advanceNextPosition());
                checkState(mask == null || mask.advanceNextPosition());
                if (!values.isNull() && (mask == null || mask.getBoolean())) {
                    count++;
                }
            }
        }
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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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  • com.facebook.presto.block.uncompressed.AbstractTestSingleColumnBlockCursorWithNulls
  • com.facebook.presto.block.uncompressed.UncompressedSliceBlock
  • com.facebook.presto.operator.aggregation.AbstractTestAggregationFunction
  • com.facebook.presto.operator.aggregation.AbstractTestApproximateCountDistinct
  • com.facebook.presto.operator.aggregation.ApproximateAverageAggregation$ApproximateAverageAccumulator
  • com.facebook.presto.operator.aggregation.ApproximateAverageAggregation$ApproximateAverageGroupedAccumulator
  • com.facebook.presto.operator.aggregation.ApproximateCountAggregation$ApproximateCountGroupedAccumulator
  • com.facebook.presto.operator.aggregation.ApproximateCountAggregation$CountAccumulator
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