Package com.facebook.presto.byteCode

Examples of com.facebook.presto.byteCode.ClassDefinition

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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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            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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    public HashJoinOperatorFactoryFactory internalCompileJoinOperatorFactory(int channelCount, List<Integer> probeJoinChannel)
    {
        DynamicClassLoader classLoader = new DynamicClassLoader(getClass().getClassLoader());
        Class<? extends JoinProbe> joinProbeClass = compileJoinProbe(channelCount, probeJoinChannel, classLoader);

        ClassDefinition classDefinition = new ClassDefinition(new CompilerContext(bootstrapMethod),
                a(PUBLIC, FINAL),
                typeFromPathName("JoinProbeFactory_" + CLASS_ID.incrementAndGet()),
                type(Object.class),
                type(JoinProbeFactory.class));

        classDefinition.declareConstructor(new CompilerContext(bootstrapMethod),
                a(PUBLIC))
                .getBody()
                .comment("super();")
                .pushThis()
                .invokeConstructor(Object.class)
                .ret();

        classDefinition.declareMethod(new CompilerContext(bootstrapMethod),
                a(PUBLIC),
                "createJoinProbe",
                type(JoinProbe.class),
                arg("lookupSource", LookupSource.class),
                arg("page", Page.class))
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        return new ReflectionJoinProbeFactory(joinProbeClass);
    }

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

        // declare fields
        FieldDefinition lookupSourceField = classDefinition.declareField(a(PRIVATE, FINAL), "lookupSource", LookupSource.class);
        FieldDefinition positionCountField = classDefinition.declareField(a(PRIVATE, FINAL), "positionCount", int.class);
        List<FieldDefinition> blockFields = new ArrayList<>();
        for (int i = 0; i < channelCount; i++) {
            FieldDefinition channelField = classDefinition.declareField(a(PRIVATE, FINAL), "block_" + i, com.facebook.presto.spi.block.Block.class);
            blockFields.add(channelField);
        }
        List<FieldDefinition> probeBlockFields = new ArrayList<>();
        for (int i = 0; i < probeChannels.size(); i++) {
            FieldDefinition channelField = classDefinition.declareField(a(PRIVATE, FINAL), "probeBlock_" + i, com.facebook.presto.spi.block.Block.class);
            probeBlockFields.add(channelField);
        }
        FieldDefinition probeBlocksArrayField = classDefinition.declareField(a(PRIVATE, FINAL), "probeBlocks", com.facebook.presto.spi.block.Block[].class);
        FieldDefinition positionField = classDefinition.declareField(a(PRIVATE), "position", int.class);

        generateConstructor(classDefinition, probeChannels, lookupSourceField, blockFields, probeBlockFields, probeBlocksArrayField, positionField, positionCountField);
        generateGetChannelCountMethod(classDefinition, blockFields.size());
        generateAppendToMethod(classDefinition, blockFields, positionField);
        generateAdvanceNextPosition(classDefinition, positionField, positionCountField);
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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, 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, 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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    public HashJoinOperatorFactoryFactory internalCompileJoinOperatorFactory(int channelCount, List<Integer> probeJoinChannel)
    {
        DynamicClassLoader classLoader = new DynamicClassLoader(getClass().getClassLoader());
        Class<? extends JoinProbe> joinProbeClass = compileJoinProbe(channelCount, probeJoinChannel, classLoader);

        ClassDefinition classDefinition = new ClassDefinition(new CompilerContext(bootstrapMethod),
                a(PUBLIC, FINAL),
                typeFromPathName("JoinProbeFactory_" + CLASS_ID.incrementAndGet()),
                type(Object.class),
                type(JoinProbeFactory.class));

        classDefinition.declareConstructor(new CompilerContext(bootstrapMethod),
                a(PUBLIC))
                .getBody()
                .comment("super();")
                .pushThis()
                .invokeConstructor(Object.class)
                .ret();

        classDefinition.declareMethod(new CompilerContext(bootstrapMethod),
                a(PUBLIC),
                "createJoinProbe",
                type(JoinProbe.class),
                arg("lookupSource", LookupSource.class),
                arg("page", Page.class))
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        return new ReflectionJoinProbeFactory(joinProbeClass);
    }

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

        // declare fields
        FieldDefinition lookupSourceField = classDefinition.declareField(a(PRIVATE, FINAL), "lookupSource", LookupSource.class);
        List<FieldDefinition> cursorFields = new ArrayList<>();
        for (int i = 0; i < channelCount; i++) {
            FieldDefinition channelField = classDefinition.declareField(a(PRIVATE, FINAL), "cursor_" + i, BlockCursor.class);
            cursorFields.add(channelField);
        }
        List<FieldDefinition> probeCursorFields = new ArrayList<>();
        for (int i = 0; i < probeChannels.size(); i++) {
            FieldDefinition channelField = classDefinition.declareField(a(PRIVATE, FINAL), "probeCursor_" + i, BlockCursor.class);
            probeCursorFields.add(channelField);
        }
        FieldDefinition probeCursorsArrayField = classDefinition.declareField(a(PRIVATE, FINAL), "probeCursors", BlockCursor[].class);

        generateConstructor(classDefinition, probeChannels, lookupSourceField, cursorFields, probeCursorFields, probeCursorsArrayField);
        generateGetChannelCountMethod(classDefinition, cursorFields.size());
        generateAppendToMethod(classDefinition, cursorFields);
        generateAdvanceNextPosition(classDefinition, cursorFields);
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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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