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.


        @Override
        public void addIntermediate(Block block)
        {
            BlockCursor cursor = block.cursor();
            checkArgument(cursor.advanceNextPosition());
            SliceInput sliceInput = new BasicSliceInput(cursor.getSlice());
            Page page = Iterators.getOnlyElement(PagesSerde.readPages(blockEncodingSerde, sliceInput));
            checkArgument(page.getChannelCount() == accumulators.size(), "number of blocks does not match accumulators");


            for (int i = 0; i < page.getChannelCount(); i++) {

View Full Code Here

        public Block evaluateFinal()
        {
            DescriptiveStatistics statistics = new DescriptiveStatistics();
            for (int i = 0; i < accumulators.size(); i++) {
                BlockCursor cursor = accumulators.get(i).evaluateFinal().cursor();
                checkArgument(cursor.advanceNextPosition(), "accumulator returned no results");
                statistics.addValue(getNumeric(cursor));
            }


            BlockBuilder builder = VARCHAR.createBlockBuilder(new BlockBuilderStatus());
            String result = formatApproximateOutput(statistics, confidence);

View Full Code Here


        @Override
        public void addIntermediate(GroupByIdBlock groupIdsBlock, Block block)
        {
            BlockCursor cursor = block.cursor();
            checkArgument(cursor.advanceNextPosition());
            SliceInput sliceInput = new BasicSliceInput(cursor.getSlice());
            Page page = Iterators.getOnlyElement(PagesSerde.readPages(blockEncodingSerde, sliceInput));
            checkArgument(page.getChannelCount() == accumulators.size(), "number of blocks does not match accumulators");


            for (int i = 0; i < page.getChannelCount(); i++) {

View Full Code Here

            DescriptiveStatistics statistics = new DescriptiveStatistics();
            for (int i = 0; i < accumulators.size(); i++) {
                BlockBuilder builder = accumulators.get(i).getFinalType().createBlockBuilder(new BlockBuilderStatus());
                accumulators.get(i).evaluateFinal(groupId, builder);
                BlockCursor cursor = builder.build().cursor();
                checkArgument(cursor.advanceNextPosition(), "accumulator returned no results");
                statistics.addValue(getNumeric(cursor));
            }


            String result = formatApproximateOutput(statistics, confidence);
            output.appendSlice(Slices.utf8Slice(result));

View Full Code Here

            minValues.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);

View Full Code Here

                        }
                        sizeOfValues += value.length();
                    }
                }
            }
            checkState(!values.advanceNextPosition());
        }


        @Override
        public void evaluateFinal(int groupId, BlockBuilder output)
        {

View Full Code Here

        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()) {
                    min = min(min, values.getSlice());
                }
            }
        }

View Full Code Here

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

View Full Code Here

            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);

View Full Code Here

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


                if (!values.isNull() && !weights.isNull() && sampleWeight > 0) {
                    addValue(digest, values, sampleWeight * weights.getLong(), parameterType);

View Full Code Here

0 1 2 3 4 5 6 7 8 9

TOP

All source code are property of their respective owners. Java is a trademark of Sun Microsystems, Inc and owned by ORACLE Inc. Contact coftware#gmail.com.