Examples with CursorProcessor io.prestosql.operator.project.CursorProcessor used on opensource projects

Example 6 with CursorProcessor

use of io.prestosql.operator.project.CursorProcessor in project hetu-core by openlookeng.

the class TestScanFilterAndProjectOperator method testPageYield.

@Test
public void testPageYield() {
    int totalRows = 1000;
    Page input = SequencePageBuilder.createSequencePage(ImmutableList.of(BIGINT), totalRows, 1);
    DriverContext driverContext = newDriverContext();
    // 20 columns; each column is associated with a function that will force yield per projection
    int totalColumns = 20;
    ImmutableList.Builder<SqlScalarFunction> functions = ImmutableList.builder();
    for (int i = 0; i < totalColumns; i++) {
        functions.add(new GenericLongFunction("page_col" + i, value -> {
            driverContext.getYieldSignal().forceYieldForTesting();
            return value;
        }));
    }
    Metadata localMetadata = functionAssertions.getMetadata();
    localMetadata.getFunctionAndTypeManager().registerBuiltInFunctions(functions.build());
    // match each column with a projection
    ExpressionCompiler compiler = new ExpressionCompiler(localMetadata, new PageFunctionCompiler(localMetadata, 0));
    ImmutableList.Builder<RowExpression> projections = ImmutableList.builder();
    for (int i = 0; i < totalColumns; i++) {
        projections.add(call(QualifiedObjectName.valueOfDefaultFunction("generic_long_page_col" + i).toString(), new BuiltInFunctionHandle(internalScalarFunction(QualifiedObjectName.valueOfDefaultFunction("generic_long_page_col" + i), BIGINT.getTypeSignature(), ImmutableList.of(BIGINT.getTypeSignature()))), BIGINT, field(0, BIGINT)));
    }
    Supplier<CursorProcessor> cursorProcessor = compiler.compileCursorProcessor(Optional.empty(), projections.build(), "key");
    Supplier<PageProcessor> pageProcessor = compiler.compilePageProcessor(Optional.empty(), projections.build(), MAX_BATCH_SIZE);
    ScanFilterAndProjectOperator.ScanFilterAndProjectOperatorFactory factory = new ScanFilterAndProjectOperator.ScanFilterAndProjectOperatorFactory(0, new PlanNodeId("test"), new PlanNodeId("0"), (session, split, table, columns, dynamicFilter) -> new FixedPageSource(ImmutableList.of(input)), cursorProcessor, pageProcessor, TEST_TABLE_HANDLE, ImmutableList.of(), null, ImmutableList.of(BIGINT), new DataSize(0, BYTE), 0, ReuseExchangeOperator.STRATEGY.REUSE_STRATEGY_DEFAULT, new UUID(0, 0), false, Optional.empty(), 0, 0);
    SourceOperator operator = factory.createOperator(driverContext);
    operator.addSplit(new Split(new CatalogName("test"), TestingSplit.createLocalSplit(), Lifespan.taskWide()));
    operator.noMoreSplits();
    // exactly 20 blocks (one for each column) and the PageProcessor will be able to create a Page out of it.
    for (int i = 1; i <= totalRows * totalColumns; i++) {
        driverContext.getYieldSignal().setWithDelay(SECONDS.toNanos(1000), driverContext.getYieldExecutor());
        Page page = operator.getOutput();
        if (i == totalColumns) {
            assertNotNull(page);
            assertEquals(page.getPositionCount(), totalRows);
            assertEquals(page.getChannelCount(), totalColumns);
            for (int j = 0; j < totalColumns; j++) {
                assertEquals(toValues(BIGINT, page.getBlock(j)), toValues(BIGINT, input.getBlock(0)));
            }
        } else {
            assertNull(page);
        }
        driverContext.getYieldSignal().reset();
    }
}

Example 7 with CursorProcessor

use of io.prestosql.operator.project.CursorProcessor in project hetu-core by openlookeng.

the class TestScanFilterAndProjectOperator method createScanFilterAndProjectOperator.

private SourceOperator createScanFilterAndProjectOperator(String sourceId, UUID uuid, int operatorId, Page input, DriverContext driverContext, ReuseExchangeOperator.STRATEGY strategy, boolean spillEnabled, Integer spillerThreshold, Integer consumerTableScanNodeCount) {
    List<RowExpression> projections = ImmutableList.of(field(0, VARCHAR));
    Supplier<CursorProcessor> cursorProcessor = expressionCompiler.compileCursorProcessor(Optional.empty(), projections, "key");
    Supplier<PageProcessor> pageProcessor = expressionCompiler.compilePageProcessor(Optional.empty(), projections);
    ScanFilterAndProjectOperator.ScanFilterAndProjectOperatorFactory factory = new ScanFilterAndProjectOperator.ScanFilterAndProjectOperatorFactory(operatorId, new PlanNodeId("test"), new PlanNodeId(sourceId), (session, split, table, columns, dynamicFilter) -> new FixedPageSource(ImmutableList.of(input)), cursorProcessor, pageProcessor, TEST_TABLE_HANDLE, ImmutableList.of(), null, ImmutableList.of(VARCHAR), new DataSize(0, BYTE), 0, strategy, uuid, spillEnabled, Optional.of(new DummySpillerFactory()), spillerThreshold, consumerTableScanNodeCount);
    SourceOperator operator = factory.createOperator(driverContext);
    operator.addSplit(new Split(new CatalogName("test"), TestingSplit.createLocalSplit(), Lifespan.taskWide()));
    operator.noMoreSplits();
    return operator;
}

Example 8 with CursorProcessor

use of io.prestosql.operator.project.CursorProcessor in project hetu-core by openlookeng.

the class FunctionAssertions method compileScanFilterProject.

private static SourceOperatorFactory compileScanFilterProject(Optional<RowExpression> filter, RowExpression projection, ExpressionCompiler compiler) {
    try {
        Supplier<CursorProcessor> cursorProcessor = compiler.compileCursorProcessor(filter, ImmutableList.of(projection), SOURCE_ID);
        Supplier<PageProcessor> pageProcessor = compiler.compilePageProcessor(filter, ImmutableList.of(projection));
        return new ScanFilterAndProjectOperator.ScanFilterAndProjectOperatorFactory(0, new PlanNodeId("test"), SOURCE_ID, PAGE_SOURCE_PROVIDER, cursorProcessor, pageProcessor, TEST_TABLE_HANDLE, ImmutableList.of(), null, ImmutableList.of(projection.getType()), new DataSize(0, BYTE), 0, ReuseExchangeOperator.STRATEGY.REUSE_STRATEGY_DEFAULT, new UUID(0, 0), false, Optional.empty(), 0, 0);
    } catch (Throwable e) {
        if (e instanceof UncheckedExecutionException) {
            e = e.getCause();
        }
        throw new RuntimeException("Error compiling filter " + filter + ": " + e.getMessage(), e);
    }
}