Package com.facebook.presto.spi.block

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

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            Input input = node.getInput();

            int channel = input.getChannel();
            if (context instanceof BlockCursor[]) {
                BlockCursor[] inputs = (BlockCursor[]) context;
                BlockCursor cursor = inputs[channel];

                if (cursor.isNull()) {
                    return null;
                }

                Class<?> javaType = cursor.getType().getJavaType();
                if (javaType == boolean.class) {
                    return cursor.getBoolean();
                }
                else if (javaType == long.class) {
                    return cursor.getLong();
                }
                else if (javaType == double.class) {
                    return cursor.getDouble();
                }
                else if (javaType == Slice.class) {
                    return cursor.getSlice();
                }
                else {
                    throw new UnsupportedOperationException("not yet implemented");
                }
            }
            else if (context instanceof RecordCursor) {
                RecordCursor cursor = (RecordCursor) context;
                if (cursor.isNull(channel)) {
                    return null;
                }

                Class<?> javaType = cursor.getType(input.getChannel()).getJavaType();
                if (javaType == boolean.class) {
                    return cursor.getBoolean(channel);
                }
                else if (javaType == long.class) {
                    return cursor.getLong(channel);
                }
                else if (javaType == double.class) {
                    return cursor.getDouble(channel);
                }
                else if (javaType == Slice.class) {
                    return cursor.getSlice(channel);
                }
                else {
                    throw new UnsupportedOperationException("not yet implemented");
                }
            }
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            blocks.add(openBlockBuilder);
        }

        public void addBlock(Block sourceBlock)
        {
            BlockCursor sourceCursor = sourceBlock.cursor();
            strategy.setLookupValue(sourceCursor);

            while (sourceCursor.advanceNextPosition()) {
                // Record whether we have seen a null
                containsNull |= sourceCursor.isNull();

                if (!addressValueSet.contains(CURRENT_VALUE_ADDRESS)) {
                    if (openBlockBuilder.isFull()) {
                        // record the memory usage for the open block
                        blocksMemorySize += openBlockBuilder.getSizeInBytes();

                        // create a new block builder (there is no need to actually "build" the block)
                        openBlockBuilder = type.createBlockBuilder(new BlockBuilderStatus());
                        blocks.add(openBlockBuilder);
                        currentBlockId++;
                    }

                    int blockPosition = openBlockBuilder.getPositionCount();
                    sourceCursor.appendTo(openBlockBuilder);
                    addressValueSet.add(encodeSyntheticAddress(currentBlockId, blockPosition));
                }
            }

            operatorContext.setMemoryReservation(getEstimatedSize());
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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(), Long.MAX_VALUE);

            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);

                    long value = values.getLong();
                    value = Math.min(value, minValues.get(groupId));
                    minValues.set(groupId, value);
                }
            }
            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()) {
                    notNull = true;
                    min = Math.min(min, values.getLong());
                }
            }
        }
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        {
            checkArgument(percentileChannel != -1, "Raw input is not allowed for a final aggregation");

            digests.ensureCapacity(groupIdsBlock.getGroupCount());

            BlockCursor values = page.getBlock(valueChannel).cursor();
            BlockCursor percentiles = page.getBlock(percentileChannel).cursor();
            BlockCursor masks = null;
            if (maskChannel.isPresent()) {
                masks = page.getBlock(maskChannel.get()).cursor();
            }
            BlockCursor sampleWeights = null;
            if (sampleWeightChannel.isPresent()) {
                sampleWeights = page.getBlock(sampleWeightChannel.get()).cursor();
            }

            for (int position = 0; position < groupIdsBlock.getPositionCount(); position++) {
                checkState(values.advanceNextPosition());
                checkState(percentiles.advanceNextPosition());
                checkState(masks == null || masks.advanceNextPosition());
                checkState(sampleWeights == null || sampleWeights.advanceNextPosition());
                long sampleWeight = SimpleAggregationFunction.computeSampleWeight(masks, sampleWeights);

                long groupId = groupIdsBlock.getGroupId(position);

                // skip null values
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        {
            checkArgument(percentileChannel == -1, "Intermediate input is only allowed for a final aggregation");

            digests.ensureCapacity(groupIdsBlock.getGroupCount());

            BlockCursor intermediates = block.cursor();

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

                if (!intermediates.isNull()) {
                    long groupId = groupIdsBlock.getGroupId(position);

                    DigestAndPercentile currentValue = digests.get(groupId);
                    if (currentValue == null) {
                        currentValue = new DigestAndPercentile(new QuantileDigest(0.01));
                        digests.set(groupId, currentValue);
                        sizeOfValues += currentValue.getDigest().estimatedInMemorySizeInBytes();
                    }

                    SliceInput input = intermediates.getSlice().getInput();

                    // read digest
                    sizeOfValues -= currentValue.getDigest().estimatedInMemorySizeInBytes();
                    currentValue.getDigest().merge(QuantileDigest.deserialize(input));
                    sizeOfValues += currentValue.getDigest().estimatedInMemorySizeInBytes();
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        @Override
        public void addInput(Page page)
        {
            checkArgument(valueChannel != -1, "Raw input is not allowed for a final aggregation");

            BlockCursor values = page.getBlock(valueChannel).cursor();
            BlockCursor percentiles = page.getBlock(percentileChannel).cursor();
            BlockCursor masks = null;
            if (maskChannel.isPresent()) {
                masks = page.getBlock(maskChannel.get()).cursor();
            }
            BlockCursor sampleWeights = null;
            if (sampleWeightChannel.isPresent()) {
                sampleWeights = page.getBlock(sampleWeightChannel.get()).cursor();
            }

            for (int position = 0; position < page.getPositionCount(); position++) {
                checkState(values.advanceNextPosition());
                checkState(percentiles.advanceNextPosition());
                checkState(masks == null || masks.advanceNextPosition());
                checkState(sampleWeights == null || sampleWeights.advanceNextPosition());
                long sampleWeight = SimpleAggregationFunction.computeSampleWeight(masks, sampleWeights);

                if (!values.isNull() && sampleWeight > 0) {
                    addValue(digest, values, parameterType, sampleWeight);
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        @Override
        public void addIntermediate(Block block)
        {
            checkArgument(valueChannel == -1, "Intermediate input is only allowed for a final aggregation");

            BlockCursor intermediates = block.cursor();

            for (int position = 0; position < block.getPositionCount(); position++) {
                checkState(intermediates.advanceNextPosition());
                if (!intermediates.isNull()) {
                    SliceInput input = intermediates.getSlice().getInput();
                    // read digest
                    digest.merge(QuantileDigest.deserialize(input));
                    // read percentile
                    percentile = input.readDouble();
                }
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        }

        @Override
        protected void processInput(Block block, Optional<Block> maskBlock, Optional<Block> sampleWeightBlock)
        {
            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())) {
                    add(values);
                }
            }
        }
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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())) {
                    add(groupIdsBlock.getGroupId(position), values);
                }
            }
            checkState(!values.advanceNextPosition(), "group id and value blocks have different number of entries");
        }
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