Examples with PageBuilder com.facebook.presto.spi.PageBuilder used on opensource projects

Example 21 with PageBuilder

use of com.facebook.presto.spi.PageBuilder in project presto by prestodb.

the class TestGroupByHash method testAppendToMultipleTuplesPerGroup.

@Test
public void testAppendToMultipleTuplesPerGroup() throws Exception {
    List<Long> values = new ArrayList<>();
    for (long i = 0; i < 100; i++) {
        values.add(i % 50);
    }
    Block valuesBlock = BlockAssertions.createLongsBlock(values);
    Block hashBlock = TypeUtils.getHashBlock(ImmutableList.of(BIGINT), valuesBlock);
    GroupByHash groupByHash = createGroupByHash(TEST_SESSION, ImmutableList.of(BIGINT), new int[] { 0 }, Optional.of(1), 100, JOIN_COMPILER);
    groupByHash.getGroupIds(new Page(valuesBlock, hashBlock));
    assertEquals(groupByHash.getGroupCount(), 50);
    PageBuilder pageBuilder = new PageBuilder(groupByHash.getTypes());
    for (int i = 0; i < groupByHash.getGroupCount(); i++) {
        pageBuilder.declarePosition();
        groupByHash.appendValuesTo(i, pageBuilder, 0);
    }
    Page outputPage = pageBuilder.build();
    assertEquals(outputPage.getPositionCount(), 50);
    BlockAssertions.assertBlockEquals(BIGINT, outputPage.getBlock(0), BlockAssertions.createLongSequenceBlock(0, 50));
}

Example 22 with PageBuilder

use of com.facebook.presto.spi.PageBuilder in project presto by prestodb.

the class TestRealHistogramAggregation method makeInput.

private static Page makeInput(int numberOfBuckets) {
    PageBuilder builder = new PageBuilder(ImmutableList.of(BIGINT, REAL, DOUBLE));
    for (int i = 0; i < 100; i++) {
        builder.declarePosition();
        BIGINT.writeLong(builder.getBlockBuilder(0), numberOfBuckets);
        // value
        REAL.writeLong(builder.getBlockBuilder(1), i);
        // weight
        DOUBLE.writeDouble(builder.getBlockBuilder(2), 1);
    }
    return builder.build();
}

Example 23 with PageBuilder

use of com.facebook.presto.spi.PageBuilder in project presto by prestodb.

the class TestHivePageSink method writeTestFile.

private static long writeTestFile(HiveClientConfig config, ExtendedHiveMetastore metastore, String outputPath) {
    HiveTransactionHandle transaction = new HiveTransactionHandle();
    ConnectorPageSink pageSink = createPageSink(transaction, config, metastore, new Path("file:///" + outputPath));
    List<LineItemColumn> columns = getTestColumns();
    List<Type> columnTypes = columns.stream().map(LineItemColumn::getType).map(TestHivePageSink::getHiveType).map(hiveType -> hiveType.getType(TYPE_MANAGER)).collect(toList());
    PageBuilder pageBuilder = new PageBuilder(columnTypes);
    int rows = 0;
    for (LineItem lineItem : new LineItemGenerator(0.01, 1, 1)) {
        rows++;
        if (rows >= NUM_ROWS) {
            break;
        }
        pageBuilder.declarePosition();
        for (int i = 0; i < columns.size(); i++) {
            LineItemColumn column = columns.get(i);
            BlockBuilder blockBuilder = pageBuilder.getBlockBuilder(i);
            switch(column.getType().getBase()) {
                case IDENTIFIER:
                    BIGINT.writeLong(blockBuilder, column.getIdentifier(lineItem));
                    break;
                case INTEGER:
                    INTEGER.writeLong(blockBuilder, column.getInteger(lineItem));
                    break;
                case DATE:
                    DATE.writeLong(blockBuilder, column.getDate(lineItem));
                    break;
                case DOUBLE:
                    DOUBLE.writeDouble(blockBuilder, column.getDouble(lineItem));
                    break;
                case VARCHAR:
                    createUnboundedVarcharType().writeSlice(blockBuilder, Slices.utf8Slice(column.getString(lineItem)));
                    break;
                default:
                    throw new IllegalArgumentException("Unsupported type " + column.getType());
            }
        }
    }
    Page page = pageBuilder.build();
    pageSink.appendPage(page);
    getFutureValue(pageSink.finish());
    File outputDir = new File(outputPath);
    List<File> files = ImmutableList.copyOf(outputDir.listFiles((dir, name) -> !name.endsWith(".crc")));
    File outputFile = getOnlyElement(files);
    long length = outputFile.length();
    ConnectorPageSource pageSource = createPageSource(transaction, config, outputFile);
    List<Page> pages = new ArrayList<>();
    while (!pageSource.isFinished()) {
        Page nextPage = pageSource.getNextPage();
        if (nextPage != null) {
            nextPage.assureLoaded();
            pages.add(nextPage);
        }
    }
    MaterializedResult expectedResults = toMaterializedResult(getSession(config), columnTypes, ImmutableList.of(page));
    MaterializedResult results = toMaterializedResult(getSession(config), columnTypes, pages);
    assertEquals(results, expectedResults);
    return length;
}

Example 24 with PageBuilder

use of com.facebook.presto.spi.PageBuilder in project presto by prestodb.

the class AggregationOperator method getOutput.

@Override
public Page getOutput() {
    if (state != State.HAS_OUTPUT) {
        return null;
    }
    // project results into output blocks
    List<Type> types = aggregates.stream().map(Aggregator::getType).collect(toImmutableList());
    PageBuilder pageBuilder = new PageBuilder(types);
    pageBuilder.declarePosition();
    for (int i = 0; i < aggregates.size(); i++) {
        Aggregator aggregator = aggregates.get(i);
        BlockBuilder blockBuilder = pageBuilder.getBlockBuilder(i);
        aggregator.evaluate(blockBuilder);
    }
    state = State.FINISHED;
    return pageBuilder.build();
}

Example 25 with PageBuilder

use of com.facebook.presto.spi.PageBuilder in project presto by prestodb.

the class HashAggregationOperator method getGlobalAggregationOutput.

private Page getGlobalAggregationOutput() {
    List<Accumulator> accumulators = accumulatorFactories.stream().map(AccumulatorFactory::createAccumulator).collect(Collectors.toList());
    PageBuilder output = new PageBuilder(types);
    for (int groupId : globalAggregationGroupIds) {
        output.declarePosition();
        int channel = 0;
        for (; channel < groupByTypes.size(); channel++) {
            if (channel == groupIdChannel.get()) {
                output.getBlockBuilder(channel).writeLong(groupId);
            } else {
                output.getBlockBuilder(channel).appendNull();
            }
        }
        if (hashChannel.isPresent()) {
            output.getBlockBuilder(channel++).writeLong(TypeUtils.NULL_HASH_CODE);
        }
        for (int j = 0; j < accumulators.size(); channel++, j++) {
            accumulators.get(j).evaluateFinal(output.getBlockBuilder(channel));
        }
    }
    if (output.isEmpty()) {
        return null;
    }
    return output.build();
}