Package com.facebook.presto.spi.block

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

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        Block block = output.getBlock(0);
        assertEquals(block.getPositionCount(), 1);

        BlockCursor cursor = block.cursor();
        assertTrue(cursor.advanceNextPosition());
        if (cursor.isNull()) {
            return null;
        }
        else {
            return cursor.getObjectValue(session);
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        if (page != null) {
            assertEquals(page.getPositionCount(), 1);
            assertEquals(page.getChannelCount(), 1);

            BlockCursor cursor = page.getBlock(0).cursor();
            assertTrue(cursor.advanceNextPosition());
            assertTrue(cursor.getBoolean());
            value = true;
        }
        else {
            value = false;
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                checkState(lineStatusCursor.advanceNextPosition());
                checkState(quantityCursor.advanceNextPosition());
                checkState(extendedPriceCursor.advanceNextPosition());
                checkState(discountCursor.advanceNextPosition());
                checkState(taxCursor.advanceNextPosition());
                checkState(shipDateCursor.advanceNextPosition());

                if (shipDateCursor.isNull()) {
                    continue;
                }
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            checkState(!lineStatusCursor.advanceNextPosition());
            checkState(!quantityCursor.advanceNextPosition());
            checkState(!extendedPriceCursor.advanceNextPosition());
            checkState(!discountCursor.advanceNextPosition());
            checkState(!taxCursor.advanceNextPosition());
            checkState(!shipDateCursor.advanceNextPosition());
        }
    }

    public static void main(String[] args)
    {
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        assertEquals(joinProbe.getChannelCount(), 1);

        BlockCursor probeCursor = page.getBlock(0).cursor();
        PageBuilder pageBuilder = new PageBuilder(ImmutableList.of(VARCHAR));
        for (int position = 0; position < page.getPositionCount(); position++) {
            assertTrue(probeCursor.advanceNextPosition());
            assertTrue(joinProbe.advanceNextPosition());

            joinProbe.appendTo(pageBuilder);

            assertEquals(joinProbe.getCurrentJoinPosition(), lookupSource.getJoinPosition(probeCursor));
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            for (int position = 0; position < rows; position++) {
                checkState(extendedPriceCursor.advanceNextPosition());
                checkState(discountCursor.advanceNextPosition());
                checkState(shipDateCursor.advanceNextPosition());
                checkState(quantityCursor.advanceNextPosition());

                // where shipdate >= '1994-01-01'
                //    and shipdate < '1995-01-01'
                //    and discount >= 0.05
                //    and discount <= 0.07
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            }

            checkState(!extendedPriceCursor.advanceNextPosition());
            checkState(!discountCursor.advanceNextPosition());
            checkState(!shipDateCursor.advanceNextPosition());
            checkState(!quantityCursor.advanceNextPosition());
        }

        private void project(PageBuilder pageBuilder, BlockCursor extendedPriceCursor, BlockCursor discountCursor)
        {
            if (discountCursor.isNull() || extendedPriceCursor.isNull()) {
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                checkState(lineStatusCursor.advanceNextPosition());
                checkState(quantityCursor.advanceNextPosition());
                checkState(extendedPriceCursor.advanceNextPosition());
                checkState(discountCursor.advanceNextPosition());
                checkState(taxCursor.advanceNextPosition());
                checkState(shipDateCursor.advanceNextPosition());

                if (shipDateCursor.isNull()) {
                    continue;
                }
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            checkState(!lineStatusCursor.advanceNextPosition());
            checkState(!quantityCursor.advanceNextPosition());
            checkState(!extendedPriceCursor.advanceNextPosition());
            checkState(!discountCursor.advanceNextPosition());
            checkState(!taxCursor.advanceNextPosition());
            checkState(!shipDateCursor.advanceNextPosition());
        }
    }

    public static void main(String[] args)
    {
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        Block block = output.getBlock(0);
        assertEquals(block.getPositionCount(), 1);

        BlockCursor cursor = block.cursor();
        assertTrue(cursor.advanceNextPosition());
        if (cursor.isNull()) {
            return null;
        }
        else {
            return cursor.getObjectValue(session);
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