Package io.airlift.slice

Examples of io.airlift.slice.DynamicSliceOutput

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        }

        // update sequence id
        sequenceIdByLocation.put(location, sequenceId + responsePages.size());

        DynamicSliceOutput sliceOutput = new DynamicSliceOutput(64);
        PagesSerde.writePages(sliceOutput, responsePages);
        byte[] bytes = sliceOutput.slice().getBytes();
        return new TestingResponse(HttpStatus.OK,
                ImmutableListMultimap.of(
                        CONTENT_TYPE, PRESTO_PAGES,
                        PRESTO_PAGE_SEQUENCE_ID, String.valueOf(sequenceId)
                ),
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    @Test
    public void testRoundTrip()
    {
        TupleInfo expectedTupleInfo = new TupleInfo(BOOLEAN, FIXED_INT_64, VARIABLE_BINARY, DOUBLE);

        DynamicSliceOutput sliceOutput = new DynamicSliceOutput(1024);
        writeTupleInfo(sliceOutput, expectedTupleInfo);
        TupleInfo actualTupleInfo = readTupleInfo(sliceOutput.slice().getInput());
        assertEquals(actualTupleInfo, expectedTupleInfo);
    }
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        }

        @Override
        public DynamicSliceOutput getOutput()
        {
            lastOutput = new DynamicSliceOutput(estimatedSize);
            return lastOutput;
        }
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            TaskBuffer taskBuffer = taskBuffers.getUnchecked(taskId);
            Page page = taskBuffer.getPage(pageToken);
            if (page != null) {
                headers.put(CONTENT_TYPE, PRESTO_PAGES);
                headers.put(PRESTO_PAGE_NEXT_TOKEN, String.valueOf(pageToken + 1));
                DynamicSliceOutput output = new DynamicSliceOutput(256);
                PagesSerde.writePages(output, page);
                return new TestingResponse(HttpStatus.OK, headers.build(), output.slice().getInput());
            }
            else if (taskBuffer.isClosed()) {
                headers.put(PRESTO_PAGE_NEXT_TOKEN, String.valueOf(pageToken));
                return new TestingResponse(HttpStatus.GONE, headers.build(), new byte[0]);
            }
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            DigestAndPercentile currentValue = digests.get((long) groupId);
            if (currentValue == null || currentValue.getDigest().getCount() == 0.0) {
                output.appendNull();
            }
            else {
                DynamicSliceOutput sliceOutput = new DynamicSliceOutput(currentValue.getDigest().estimatedSerializedSizeInBytes());
                currentValue.getDigest().serialize(sliceOutput);
                sliceOutput.appendDouble(currentValue.getPercentile());

                output.appendSlice(sliceOutput.slice());
            }
        }
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            if (digest.getCount() == 0.0) {
                out.appendNull();
            }
            else {
                DynamicSliceOutput sliceOutput = new DynamicSliceOutput(digest.estimatedSerializedSizeInBytes() + SIZE_OF_DOUBLE);
                // write digest
                digest.serialize(sliceOutput);
                // write percentile
                sliceOutput.appendDouble(percentile);

                Slice slice = sliceOutput.slice();
                out.appendSlice(slice);
            }

            return out.build();
        }
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            DigestAndPercentile currentValue = digests.get((long) groupId);
            if (currentValue == null || currentValue.getDigest().getCount() == 0.0) {
                output.appendNull();
            }
            else {
                DynamicSliceOutput sliceOutput = new DynamicSliceOutput(currentValue.getDigest().estimatedSerializedSizeInBytes() + SIZE_OF_DOUBLE);
                // write digest
                currentValue.getDigest().serialize(sliceOutput);
                // write percentile
                sliceOutput.appendDouble(currentValue.getPercentile());

                Slice slice = sliceOutput.slice();
                output.appendSlice(slice);
            }
        }
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            if (digest.getCount() == 0.0) {
                out.appendNull();
            }
            else {
                DynamicSliceOutput sliceOutput = new DynamicSliceOutput(digest.estimatedSerializedSizeInBytes() + SIZE_OF_DOUBLE);
                // write digest
                digest.serialize(sliceOutput);
                // write percentile
                sliceOutput.appendDouble(percentile);

                Slice slice = sliceOutput.slice();
                out.appendSlice(slice);
            }

            return out.build();
        }
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        positionCount = block.getPositionCount();

        uncompressedBlock = block;
        uncompressedBlockEncoding = block.getEncoding();

        DynamicSliceOutput sliceOutput = new DynamicSliceOutput(Ints.checkedCast(uncompressedBlock.getSizeInBytes() + ENCODING_BUFFER_OVERHEAD.toBytes()));
        uncompressedBlockEncoding.writeBlock(sliceOutput, uncompressedBlock);
        Slice uncompressedSlice = sliceOutput.slice();

        byte[] compressedBytes = new byte[Snappy.maxCompressedLength(uncompressedSlice.length())];
        int actualLength = Snappy.compress(uncompressedSlice.getBytes(), 0, uncompressedSlice.length(), compressedBytes, 0);
        compressedSlice = Slices.wrappedBuffer(Arrays.copyOf(compressedBytes, actualLength));
    }
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    private int currentEntrySize;

    public VariableWidthBlockBuilder(BlockBuilderStatus blockBuilderStatus)
    {
        this.blockBuilderStatus = Objects.requireNonNull(blockBuilderStatus, "blockBuilderStatus is null");
        this.sliceOutput = new DynamicSliceOutput((int) (blockBuilderStatus.getMaxBlockSizeInBytes() * 1.2));
    }
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Related Classes of io.airlift.slice.DynamicSliceOutput

  • com.facebook.presto.block.AbstractTestBlock
  • com.facebook.presto.block.BlockBuilder
  • com.facebook.presto.block.dictionary.TestPackedLongSerde
  • com.facebook.presto.block.snappy.SnappyBlock
  • com.facebook.presto.operator.aggregation.ApproximatePercentileAggregation$ApproximatePercentileAccumulator
  • com.facebook.presto.operator.aggregation.ApproximatePercentileAggregation$ApproximatePercentileGroupedAccumulator
  • com.facebook.presto.operator.aggregation.ApproximatePercentileWeightedAggregation$ApproximatePercentileWeightedAccumulator
  • com.facebook.presto.operator.aggregation.ApproximatePercentileWeightedAggregation$ApproximatePercentileWeightedGroupedAccumulator
  • com.facebook.presto.operator.aggregation.BootstrappedAggregation$BootstrappedAccumulator
  • com.facebook.presto.operator.aggregation.BootstrappedAggregation$BootstrappedGroupedAccumulator
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