Package com.facebook.presto.byteCode

Examples of com.facebook.presto.byteCode.ClassDefinition

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        return new PagesHashStrategyFactory(pagesHashStrategyClass);
    }

    private Class<? extends PagesHashStrategy> compilePagesHashStrategy(int channelCount, List<Integer> joinChannels, DynamicClassLoader classLoader)
    {
        ClassDefinition classDefinition = new ClassDefinition(new CompilerContext(bootstrapMethod),
                a(PUBLIC, FINAL),
                typeFromPathName("PagesHashStrategy_" + CLASS_ID.incrementAndGet()),
                type(Object.class),
                type(PagesHashStrategy.class));

        // declare fields
        List<FieldDefinition> channelFields = new ArrayList<>();
        for (int i = 0; i < channelCount; i++) {
            FieldDefinition channelField = classDefinition.declareField(a(PRIVATE, FINAL), "channel_" + i, type(List.class, RandomAccessBlock.class));
            channelFields.add(channelField);
        }
        List<FieldDefinition> joinChannelFields = new ArrayList<>();
        for (int i = 0; i < joinChannels.size(); i++) {
            FieldDefinition channelField = classDefinition.declareField(a(PRIVATE, FINAL), "joinChannel_" + i, type(List.class, RandomAccessBlock.class));
            joinChannelFields.add(channelField);
        }

        generateConstructor(classDefinition, joinChannels, channelFields, joinChannelFields);
        generateGetChannelCountMethod(classDefinition, channelFields);
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            }
        }

        DynamicClassLoader classLoader = createClassLoader();

        ClassDefinition definition = new ClassDefinition(new CompilerContext(null),
                a(PUBLIC, FINAL),
                typeFromPathName(clazz.getSimpleName() + "Serializer_" + CLASS_ID.incrementAndGet()),
                type(Object.class),
                type(AccumulatorStateSerializer.class));

        // Generate constructor
        definition.declareConstructor(new CompilerContext(null), a(PUBLIC))
                .getBody()
                .pushThis()
                .invokeConstructor(Object.class)
                .ret();
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        DynamicClassLoader classLoader = createClassLoader();
        Class<? extends T> singleStateClass = generateSingleStateClass(clazz, classLoader);
        Class<? extends T> groupedStateClass = generateGroupedStateClass(clazz, classLoader);

        ClassDefinition definition = new ClassDefinition(new CompilerContext(null),
                a(PUBLIC, FINAL),
                typeFromPathName(clazz.getSimpleName() + "Factory_" + CLASS_ID.incrementAndGet()),
                type(Object.class),
                type(AccumulatorStateFactory.class));

        // Generate constructor
        definition.declareConstructor(new CompilerContext(null), a(PUBLIC))
                .getBody()
                .pushThis()
                .invokeConstructor(Object.class)
                .ret();

        // Generate single state creation method
        definition.declareMethod(new CompilerContext(null), a(PUBLIC), "createSingleState", type(Object.class))
                .getBody()
                .newObject(singleStateClass)
                .dup()
                .invokeConstructor(singleStateClass)
                .retObject();

        // Generate grouped state creation method
        definition.declareMethod(new CompilerContext(null), a(PUBLIC), "createGroupedState", type(Object.class))
                .getBody()
                .newObject(groupedStateClass)
                .dup()
                .invokeConstructor(groupedStateClass)
                .retObject();
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        }
    }

    private static <T> Class<? extends T> generateSingleStateClass(Class<T> clazz, DynamicClassLoader classLoader)
    {
        ClassDefinition definition = new ClassDefinition(new CompilerContext(null),
                a(PUBLIC, FINAL),
                typeFromPathName("Single" + clazz.getSimpleName() + "_" + CLASS_ID.incrementAndGet()),
                type(AbstractAccumulatorState.class),
                type(clazz));

        // Generate constructor
        Block constructor = definition.declareConstructor(new CompilerContext(null), a(PUBLIC))
                .getBody()
                .pushThis()
                .invokeConstructor(AbstractAccumulatorState.class);

        // Generate fields
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        return defineClass(definition, clazz, classLoader);
    }

    private static <T> Class<? extends T> generateGroupedStateClass(Class<T> clazz, DynamicClassLoader classLoader)
    {
        ClassDefinition definition = new ClassDefinition(new CompilerContext(null),
                a(PUBLIC, FINAL),
                typeFromPathName("Grouped" + clazz.getSimpleName() + "_" + CLASS_ID.incrementAndGet()),
                type(AbstractGroupedAccumulatorState.class),
                type(clazz),
                type(GroupedAccumulator.class));

        List<StateField> fields = enumerateFields(clazz);

        // Create constructor
        Block constructor = definition.declareConstructor(new CompilerContext(null), a(PUBLIC))
                .getBody()
                .pushThis()
                .invokeConstructor(AbstractGroupedAccumulatorState.class);
        // Create ensureCapacity
        Block ensureCapacity = definition.declareMethod(new CompilerContext(null), a(PUBLIC), "ensureCapacity", type(void.class), arg("size", long.class)).getBody();

        // Generate fields, constructor, and ensureCapacity
        List<FieldDefinition> fieldDefinitions = new ArrayList<>();
        for (StateField field : fields) {
            fieldDefinitions.add(generateGroupedField(definition, constructor, ensureCapacity, field));
        }

        constructor.ret();
        ensureCapacity.ret();

        // Generate getEstimatedSize
        Block getEstimatedSize = definition.declareMethod(new CompilerContext(null), a(PUBLIC), "getEstimatedSize", type(long.class))
                .getBody()
                .comment("long size = 0;")
                .push(0L);
        for (FieldDefinition field : fieldDefinitions) {
            getEstimatedSize
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        return new PagesIndexOrdering(comparator);
    }

    private Class<? extends PagesIndexComparator> compilePagesIndexComparator(List<Integer> sortChannels, List<SortOrder> sortOrders, DynamicClassLoader classLoader)
    {
        ClassDefinition classDefinition = new ClassDefinition(new CompilerContext(bootstrapMethod),
                a(PUBLIC, FINAL),
                typeFromPathName("PagesIndexComparator" + CLASS_ID.incrementAndGet()),
                type(Object.class),
                type(PagesIndexComparator.class));
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        return new PagesHashStrategyFactory(pagesHashStrategyClass);
    }

    private Class<? extends PagesHashStrategy> compilePagesHashStrategy(int channelCount, List<Integer> joinChannels, DynamicClassLoader classLoader)
    {
        ClassDefinition classDefinition = new ClassDefinition(new CompilerContext(bootstrapMethod),
                a(PUBLIC, FINAL),
                typeFromPathName("PagesHashStrategy_" + CLASS_ID.incrementAndGet()),
                type(Object.class),
                type(PagesHashStrategy.class));

        // declare fields
        List<FieldDefinition> channelFields = new ArrayList<>();
        for (int i = 0; i < channelCount; i++) {
            FieldDefinition channelField = classDefinition.declareField(a(PRIVATE, FINAL), "channel_" + i, type(List.class, com.facebook.presto.spi.block.Block.class));
            channelFields.add(channelField);
        }
        List<FieldDefinition> joinChannelFields = new ArrayList<>();
        for (int i = 0; i < joinChannels.size(); i++) {
            FieldDefinition channelField = classDefinition.declareField(a(PRIVATE, FINAL), "joinChannel_" + i, type(List.class, com.facebook.presto.spi.block.Block.class));
            joinChannelFields.add(channelField);
        }

        generateConstructor(classDefinition, joinChannels, channelFields, joinChannelFields);
        generateGetChannelCountMethod(classDefinition, channelFields);
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            DynamicClassLoader classLoader,
            TimeZoneKey timeZoneKey)
    {
        BootstrapEntry bootstrap = BootstrapEntry.makeBootstrap(classLoader, metadata);

        ClassDefinition classDefinition = new ClassDefinition(new CompilerContext(bootstrap.getBootstrapMethod()),
                a(PUBLIC, FINAL),
                typeFromPathName("FilterAndProjectOperator_" + CLASS_ID.incrementAndGet()),
                type(AbstractFilterAndProjectOperator.class));

        // declare fields
        FieldDefinition sessionField = classDefinition.declareField(a(PRIVATE, FINAL), "session", ConnectorSession.class);

        // constructor
        classDefinition.declareConstructor(new CompilerContext(bootstrap.getBootstrapMethod()),
                a(PUBLIC),
                arg("operatorContext", OperatorContext.class),
                arg("types", type(Iterable.class, Type.class)))
                .getBody()
                .comment("super(operatorContext, types);")
                .pushThis()
                .getVariable("operatorContext")
                .getVariable("types")
                .invokeConstructor(AbstractFilterAndProjectOperator.class, OperatorContext.class, Iterable.class)
                .comment("this.session = operatorContext.getSession();")
                .pushThis()
                .getVariable("operatorContext")
                .invokeVirtual(OperatorContext.class, "getSession", ConnectorSession.class)
                .putField(sessionField)
                .ret();

        generateFilterAndProjectRowOriented(bootstrap, classDefinition, filter, projections, expressionTypes);

        //
        // filter method
        //
        generateFilterMethod(bootstrap, classDefinition, filter, expressionTypes, true, timeZoneKey);
        generateFilterMethod(bootstrap, classDefinition, filter, expressionTypes, false, timeZoneKey);

        //
        // project methods
        //
        List<Type> types = new ArrayList<>();
        int projectionIndex = 0;
        for (Expression projection : projections) {
            generateProjectMethod(bootstrap, classDefinition, "project_" + projectionIndex, projection, expressionTypes, true, timeZoneKey);
            generateProjectMethod(bootstrap, classDefinition, "project_" + projectionIndex, projection, expressionTypes, false, timeZoneKey);
            types.add(expressionTypes.get(projection));
            projectionIndex++;
        }

        //
        // toString method
        //
        classDefinition.declareMethod(new CompilerContext(bootstrap.getBootstrapMethod()), a(PUBLIC), "toString", type(String.class))
                .getBody()
                .push(toStringHelper(classDefinition.getType().getJavaClassName())
                        .add("filter", filter)
                        .add("projections", projections)
                        .toString())
                .retObject();
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            DynamicClassLoader classLoader,
            TimeZoneKey timeZoneKey)
    {
        BootstrapEntry bootstrap = BootstrapEntry.makeBootstrap(classLoader, metadata);

        ClassDefinition classDefinition = new ClassDefinition(new CompilerContext(bootstrap.getBootstrapMethod()),
                a(PUBLIC, FINAL),
                typeFromPathName("ScanFilterAndProjectOperator_" + CLASS_ID.incrementAndGet()),
                type(AbstractScanFilterAndProjectOperator.class));

        // declare fields
        FieldDefinition sessionField = classDefinition.declareField(a(PRIVATE, FINAL), "session", ConnectorSession.class);

        // constructor
        classDefinition.declareConstructor(new CompilerContext(bootstrap.getBootstrapMethod()),
                a(PUBLIC),
                arg("operatorContext", OperatorContext.class),
                arg("sourceId", PlanNodeId.class),
                arg("dataStreamProvider", DataStreamProvider.class),
                arg("columns", type(Iterable.class, ColumnHandle.class)),
                arg("types", type(Iterable.class, Type.class)))
                .getBody()
                .comment("super(operatorContext, sourceId, dataStreamProvider, columns, types);")
                .pushThis()
                .getVariable("operatorContext")
                .getVariable("sourceId")
                .getVariable("dataStreamProvider")
                .getVariable("columns")
                .getVariable("types")
                .invokeConstructor(AbstractScanFilterAndProjectOperator.class, OperatorContext.class, PlanNodeId.class, DataStreamProvider.class, Iterable.class, Iterable.class)
                .comment("this.session = operatorContext.getSession();")
                .pushThis()
                .getVariable("operatorContext")
                .invokeVirtual(OperatorContext.class, "getSession", ConnectorSession.class)
                .putField(sessionField)
                .ret();

        generateFilterAndProjectRowOriented(bootstrap, classDefinition, filter, projections, expressionTypes);
        generateFilterAndProjectCursorMethod(bootstrap, classDefinition, projections);

        //
        // filter method
        //
        generateFilterMethod(bootstrap, classDefinition, filter, expressionTypes, true, timeZoneKey);
        generateFilterMethod(bootstrap, classDefinition, filter, expressionTypes, false, timeZoneKey);

        //
        // project methods
        //
        List<Type> types = new ArrayList<>();
        int projectionIndex = 0;
        for (Expression projection : projections) {
            generateProjectMethod(bootstrap, classDefinition, "project_" + projectionIndex, projection, expressionTypes, true, timeZoneKey);
            generateProjectMethod(bootstrap, classDefinition, "project_" + projectionIndex, projection, expressionTypes, false, timeZoneKey);
            types.add(expressionTypes.get(projection));
            projectionIndex++;
        }

        //
        // toString method
        //
        classDefinition.declareMethod(new CompilerContext(bootstrap.getBootstrapMethod()), a(PUBLIC), "toString", type(String.class))
                .getBody()
                .push(toStringHelper(classDefinition.getType().getJavaClassName())
                        .add("filter", filter)
                        .add("projections", projections)
                        .toString())
                .retObject();
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            AggregationMetadata metadata,
            DynamicClassLoader classLoader)
    {
        boolean grouped = accumulatorInterface == GroupedAccumulator.class;

        ClassDefinition definition = new ClassDefinition(new CompilerContext(null),
                a(PUBLIC, FINAL),
                typeFromPathName(metadata.getName() + accumulatorInterface.getSimpleName() + "_" + CLASS_ID.incrementAndGet()),
                type(Object.class),
                type(accumulatorInterface));

        AccumulatorStateSerializer<?> stateSerializer = metadata.getStateSerializer();
        AccumulatorStateFactory<?> stateFactory = metadata.getStateFactory();

        FieldDefinition stateSerializerField = definition.declareField(a(PRIVATE, FINAL), "stateSerializer", stateSerializer.getClass());
        FieldDefinition stateFactoryField = definition.declareField(a(PRIVATE, FINAL), "stateFactory", stateFactory.getClass());
        FieldDefinition inputChannelsField = definition.declareField(a(PRIVATE, FINAL), "inputChannels", type(List.class, Integer.class));
        FieldDefinition maskChannelField = definition.declareField(a(PRIVATE, FINAL), "maskChannel", type(Optional.class, Integer.class));
        FieldDefinition sampleWeightChannelField = definition.declareField(a(PRIVATE, FINAL), "sampleWeightChannel", type(Optional.class, Integer.class));
        FieldDefinition confidenceField = definition.declareField(a(PRIVATE, FINAL), "confidence", double.class);
        FieldDefinition stateField = definition.declareField(a(PRIVATE, FINAL), "state", grouped ? stateFactory.getGroupedStateClass() : stateFactory.getSingleStateClass());

        // Generate constructor
        generateConstructor(
                definition,
                stateSerializerField,
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  • com.facebook.presto.operator.scalar.MapConstructor
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