Package com.facebook.presto.block.rle

Examples of com.facebook.presto.block.rle.RunLengthEncodedBlock

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                newPages[i] = page;
            }
            else {
                Block[] newBlocks = new Block[page.getChannelCount() + offset];
                for (int channel = 0; channel < offset; channel++) {
                    newBlocks[channel] = new RunLengthEncodedBlock(NULL_BOOLEAN_TUPLE, page.getPositionCount());
                }
                for (int channel = 0; channel < page.getBlocks().length; channel++) {
                    newBlocks[channel + offset] = page.getBlocks()[channel];
                }
                newPages[i] = new Page(page.getPositionCount(), newBlocks);
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public class TestRunLengthEncodedBlockSerde
{
    @Test
    public void testRoundTrip()
    {
        RunLengthEncodedBlock expectedBlock = new RunLengthEncodedBlock(Tuples.createTuple("alice"), 11);

        DynamicSliceOutput sliceOutput = new DynamicSliceOutput(1024);
        RunLengthBlockEncoding blockEncoding = new RunLengthBlockEncoding(SINGLE_VARBINARY);
        blockEncoding.writeBlock(sliceOutput, expectedBlock);
        RunLengthEncodedBlock actualBlock = blockEncoding.readBlock(sliceOutput.slice().getInput());
        assertEquals(actualBlock.getSingleValue(), expectedBlock.getSingleValue());
        BlockAssertions.assertBlockEquals(actualBlock, expectedBlock);
    }
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        BlockEncoding blockEncoding = new RunLengthEncoder(sliceOutput).append(tuples).finish();
        SliceInput sliceInput = sliceOutput.slice().getInput();

        Block block = blockEncoding.readBlock(sliceInput);
        assertInstanceOf(block, RunLengthEncodedBlock.class);
        RunLengthEncodedBlock rleBlock = (RunLengthEncodedBlock) block;
        assertEquals(rleBlock.getSingleValue(), createTuple("alice"));
        assertEquals(rleBlock.getPositionCount(), 2);

        block = blockEncoding.readBlock(sliceInput);
        assertInstanceOf(block, RunLengthEncodedBlock.class);
        rleBlock = (RunLengthEncodedBlock) block;
        assertEquals(rleBlock.getSingleValue(), createTuple("bob"));
        assertEquals(rleBlock.getPositionCount(), 4);

        block = blockEncoding.readBlock(sliceInput);
        assertInstanceOf(block, RunLengthEncodedBlock.class);
        rleBlock = (RunLengthEncodedBlock) block;
        assertEquals(rleBlock.getSingleValue(), createTuple("charlie"));
        assertEquals(rleBlock.getPositionCount(), 6);

        assertFalse(sliceInput.isReadable());
    }
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            valuesBlock = new UncompressedBlock(0, SINGLE_DOUBLE, EMPTY_SLICE);
            percentilesBlock = new UncompressedBlock(0, SINGLE_DOUBLE, EMPTY_SLICE);
        }
        else {
            valuesBlock = createDoublesBlock(values);
            percentilesBlock = new RunLengthEncodedBlock(createTuple(percentile), values.length);
        }

        return new Page(valuesBlock, percentilesBlock);
    }
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            valuesBlock = new UncompressedBlock(0, SINGLE_LONG, EMPTY_SLICE);
            percentilesBlock = new UncompressedBlock(0, SINGLE_DOUBLE, EMPTY_SLICE);
        }
        else {
            valuesBlock = createLongsBlock(values);
            percentilesBlock = new RunLengthEncodedBlock(createTuple(percentile), values.length);
        }

        return new Page(valuesBlock, percentilesBlock);
    }
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            percentilesBlock = new UncompressedBlock(0, SINGLE_DOUBLE, EMPTY_SLICE);
        }
        else {
            valuesBlock = createLongsBlock(values);
            weightsBlock = createLongsBlock(weights);
            percentilesBlock = new RunLengthEncodedBlock(createTuple(percentile), values.length);
        }

        return new Page(valuesBlock, weightsBlock, percentilesBlock);
    }
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            percentilesBlock = new UncompressedBlock(0, SINGLE_DOUBLE, EMPTY_SLICE);
        }
        else {
            valuesBlock = createDoublesBlock(values);
            weightsBlock = createLongsBlock(weights);
            percentilesBlock = new RunLengthEncodedBlock(createTuple(percentile), values.length);
        }

        return new Page(valuesBlock, weightsBlock, percentilesBlock);
    }
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    }

    private static void assertRleBlock(int positionCount)
    {
        Slice expectedValue = createExpectedValue(0);
        Block block = new RunLengthEncodedBlock(createSingleValueBlock(expectedValue), positionCount);
        Slice[] expectedValues = new Slice[positionCount];
        for (int position = 0; position < positionCount; position++) {
            expectedValues[position] = expectedValue;
        }
        assertBlock(block, expectedValues);
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    {
        Block value = BOOLEAN.createBlockBuilder(new BlockBuilderStatus())
                .appendNull()
                .build();

        return new RunLengthEncodedBlock(value, positionCount);
    }
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    private static RunLengthEncodedBlock createRLEBlock(double percentile, int positionCount)
    {
        BlockBuilder blockBuilder = DOUBLE.createBlockBuilder(new BlockBuilderStatus());
        DOUBLE.writeDouble(blockBuilder, percentile);
        return new RunLengthEncodedBlock(blockBuilder.build(), positionCount);
    }
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Related Classes of com.facebook.presto.block.rle.RunLengthEncodedBlock

  • com.facebook.presto.block.TestRunLengthEncodedBlock
  • com.facebook.presto.operator.aggregation.AbstractTestAggregationFunction
  • com.facebook.presto.operator.aggregation.AggregationTestUtils
  • com.facebook.presto.operator.aggregation.TestApproximatePercentileAggregation
  • com.facebook.presto.operator.aggregation.TestCountAggregation
  • com.facebook.presto.serde.RunLengthBlockEncoding
  • com.facebook.presto.serde.RunLengthEncoder
  • com.facebook.presto.serde.TestRunLengthEncodedBlockSerde
  • io.airlift.units.DataSize
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