Package com.facebook.presto.spi.block

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

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        extends AbstractTestBlockCursor
{
    @Override
    protected RunLengthEncodedBlockCursor createTestCursor()
    {
        Block value = VARCHAR.createBlockBuilder(new BlockBuilderStatus())
                .appendNull()
                .build();

        return new RunLengthEncodedBlock(value, 11).cursor();
    }
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        extends AbstractTestBlockCursor
{
    @Override
    protected RunLengthEncodedBlockCursor createTestCursor()
    {
        Block value = VARCHAR.createBlockBuilder(new BlockBuilderStatus())
                .appendSlice(Slices.utf8Slice("cherry"))
                .build();

        return new RunLengthEncodedBlock(value, 11).cursor();
    }
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public class TestDictionaryEncodedBlockSerde
{
    @Test
    public void testRoundTrip()
    {
        Block block = VARCHAR.createBlockBuilder(new BlockBuilderStatus())
                .appendSlice(Slices.utf8Slice("alice"))
                .appendSlice(Slices.utf8Slice("bob"))
                .appendSlice(Slices.utf8Slice("charlie"))
                .appendSlice(Slices.utf8Slice("dave"))
                .build();

        DynamicSliceOutput sliceOutput = new DynamicSliceOutput(1024);
        BlockEncoding blockEncoding = new DictionaryEncoder(new UncompressedEncoder(sliceOutput)).append(block).append(block).append(block).finish();
        Block actualBlock = blockEncoding.readBlock(sliceOutput.slice().getInput());
        assertBlockEquals(actualBlock, VARCHAR.createBlockBuilder(new BlockBuilderStatus())
                .appendSlice(Slices.utf8Slice("alice"))
                .appendSlice(Slices.utf8Slice("bob"))
                .appendSlice(Slices.utf8Slice("charlie"))
                .appendSlice(Slices.utf8Slice("dave"))
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public class TestSnappyBlockSerde
{
    @Test
    public void testRoundTrip()
    {
        Block block = VARCHAR.createBlockBuilder(new BlockBuilderStatus())
                .appendSlice(Slices.utf8Slice("alice"))
                .appendSlice(Slices.utf8Slice("bob"))
                .appendSlice(Slices.utf8Slice("charlie"))
                .appendSlice(Slices.utf8Slice("dave"))
                .build();

        DynamicSliceOutput compressedOutput = new DynamicSliceOutput(1024);
        Encoder encoder = BlocksFileEncoding.SNAPPY.createBlocksWriter(compressedOutput);

        encoder.append(block);
        BlockEncoding snappyEncoding = encoder.finish();
        Block actualBlock = snappyEncoding.readBlock(compressedOutput.slice().getInput());
        BlockAssertions.assertBlockEquals(actualBlock, block);
    }
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    }

    @Test
    public void testLotsOfStuff()
    {
        Block block = VARCHAR.createBlockBuilder(new BlockBuilderStatus())
                .appendSlice(Slices.utf8Slice("alice"))
                .appendSlice(Slices.utf8Slice("bob"))
                .appendSlice(Slices.utf8Slice("charlie"))
                .appendSlice(Slices.utf8Slice("dave"))
                .build();

        DynamicSliceOutput encoderOutput = new DynamicSliceOutput(1024);
        Encoder encoder = BlocksFileEncoding.SNAPPY.createBlocksWriter(encoderOutput);

        BlockBuilder expectedBlockBuilder = VARCHAR.createBlockBuilder(new BlockBuilderStatus());

        int count = 1000;
        for (int i = 0; i < count; i++) {
            // select a random position
            int position = ThreadLocalRandom.current().nextInt(block.getPositionCount());

            // add to expected block
            block.appendTo(position, expectedBlockBuilder);

            // create block with single value and add to encoder
            encoder.append(block.getSingleValueBlock(position));
        }

        Block expectedBlock = expectedBlockBuilder.build();

        BlockEncoding snappyEncoding = encoder.finish();
        assertTrue(encoderOutput.size() < expectedBlock.getSizeInBytes());

        Block actualBlock = snappyEncoding.readBlock(encoderOutput.slice().getInput());

        BlockAssertions.assertBlockEquals(actualBlock, expectedBlock);
    }
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    }

    @Override
    protected BlockCursor createTestCursor()
    {
        Block dictionary = VARCHAR.createBlockBuilder(new BlockBuilderStatus())
                .appendNull()
                .appendSlice(Slices.utf8Slice("apple"))
                .appendSlice(Slices.utf8Slice("banana"))
                .appendSlice(Slices.utf8Slice("cherry"))
                .appendSlice(Slices.utf8Slice("date"))
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        }

        public BlockIterableBuilder newBlock()
        {
            if (!blockBuilder.isEmpty()) {
                Block block = blockBuilder.build();
                blocks.add(block);
                blockBuilder = block.getType().createBlockBuilder(new BlockBuilderStatus());
            }
            return this;
        }
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    }

    @Override
    protected BlockCursor createTestCursor()
    {
        Block dictionary = VARCHAR.createBlockBuilder(new BlockBuilderStatus())
                .appendSlice(Slices.utf8Slice("apple"))
                .appendSlice(Slices.utf8Slice("banana"))
                .appendSlice(Slices.utf8Slice("cherry"))
                .appendSlice(Slices.utf8Slice("date"))
                .build();
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    public void addInput(Page page)
    {
        checkNotNull(page, "page is null");
        checkState(!isFinished(), "Operator is already finished");

        Block sourceBlock = page.getBlock(setChannel);
        channelSetBuilder.addBlock(sourceBlock);
    }
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        return encoding;
    }

    private void writeBlock()
    {
        Block block = blockBuilder.build();
        encoding.writeBlock(sliceOutput, block);
        blockBuilder = block.getType().createBlockBuilder(new BlockBuilderStatus());
    }
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Related Classes of com.facebook.presto.spi.block.Block

  • com.facebook.presto.benchmark.HandTpchQuery6$TpchQuery6Processor
  • com.facebook.presto.block.AbstractTestBlock
  • com.facebook.presto.block.BlockAssertions
  • com.facebook.presto.block.BlockAssertions$BlockIterableBuilder
  • com.facebook.presto.block.dictionary.DictionaryBlockEncoding
  • com.facebook.presto.block.dictionary.DictionaryBlockEncoding$DictionaryBlockEncodingFactory
  • com.facebook.presto.block.dictionary.TestDictionaryEncodedBlock
  • com.facebook.presto.block.dictionary.TestDictionaryEncodedBlockCursor
  • com.facebook.presto.block.dictionary.TestDictionaryEncodedBlockCursorWithNulls
  • com.facebook.presto.block.dictionary.TestDictionaryEncodedBlockWithNulls
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