Package com.facebook.presto.spi.block

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

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    public static Object getOnlyValue(Block block)
    {
        assertEquals(block.getPositionCount(), 1, "Block positions");

        BlockCursor cursor = block.cursor();
        assertTrue(cursor.advanceNextPosition());
        Object value = cursor.getObjectValue(SESSION);
        assertFalse(cursor.advanceNextPosition());

        return value;
    }
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        assertEquals(block.getPositionCount(), 1, "Block positions");

        BlockCursor cursor = block.cursor();
        assertTrue(cursor.advanceNextPosition());
        Object value = cursor.getObjectValue(SESSION);
        assertFalse(cursor.advanceNextPosition());

        return value;
    }

    public static void assertBlocksEquals(BlockIterable actual, BlockIterable expected)
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    public static List<Object> toValues(BlockIterable blocks)
    {
        List<Object> values = new ArrayList<>();
        for (Block block : blocks) {
            BlockCursor cursor = block.cursor();
            while (cursor.advanceNextPosition()) {
                values.add(cursor.getObjectValue(SESSION));
            }
        }
        return Collections.unmodifiableList(values);
    }
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            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);
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        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;

                    // if value is true, update the max to true
                    if (values.getBoolean()) {
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            OnlineVarianceCalculator calculator = new OnlineVarianceCalculator();
            for (int position = 0; position < groupIdsBlock.getPositionCount(); position++) {
                checkState(values.advanceNextPosition());
                checkState(masks == null || masks.advanceNextPosition());
                checkState(sampleWeights == null || sampleWeights.advanceNextPosition());

                long sampleWeight = computeSampleWeight(masks, sampleWeights);
                if (!values.isNull() && sampleWeight > 0) {
                    long groupId = groupIdsBlock.getGroupId(position);
                    double inputValue;
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            BlockCursor values = valuesBlock.cursor();

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

                if (!values.isNull()) {
                    long groupId = groupIdsBlock.getGroupId(position);
                    Slice slice = values.getSlice();
                    calculator.deserializeFrom(slice, 0);
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                    counts.set(groupId, calculator.getCount());
                    means.set(groupId, calculator.getMean());
                    m2s.set(groupId, calculator.getM2());
                }
            }
            checkState(!values.advanceNextPosition());
        }

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

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

                long sampleWeight = computeSampleWeight(masks, sampleWeights);
                if (!values.isNull() && sampleWeight > 0) {
                    double inputValue;
                    if (inputIsLong) {
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        {
            BlockCursor values = block.cursor();

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

                if (!values.isNull()) {
                    Slice slice = values.getSlice();
                    calculator.deserializeFrom(slice, 0);
                    this.calculator.merge(calculator);
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