Package com.facebook.presto.byteCode

Examples of com.facebook.presto.byteCode.CompilerContext

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    private static void generateField(ClassDefinition definition, Block constructor, StateField stateField)
    {
        FieldDefinition field = definition.declareField(a(PRIVATE), UPPER_CAMEL.to(LOWER_CAMEL, stateField.getName()) + "Value", stateField.getType());

        // Generate getter
        definition.declareMethod(new CompilerContext(null), a(PUBLIC), stateField.getGetterName(), type(stateField.getType()))
                .getBody()
                .pushThis()
                .getField(field)
                .ret(stateField.getType());

        // Generate setter
        definition.declareMethod(new CompilerContext(null), a(PUBLIC), stateField.getSetterName(), type(void.class), arg("value", stateField.getType()))
                .getBody()
                .pushThis()
                .getVariable("value")
                .putField(field)
                .ret();
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    {
        Class<?> bigArrayType = getBigArrayType(stateField.getType());
        FieldDefinition field = definition.declareField(a(PRIVATE), UPPER_CAMEL.to(LOWER_CAMEL, stateField.getName()) + "Values", bigArrayType);

        // Generate getter
        definition.declareMethod(new CompilerContext(null), a(PUBLIC), stateField.getGetterName(), type(stateField.getType()))
                .getBody()
                .comment("return field.get(getGroupId());")
                .pushThis()
                .getField(field)
                .pushThis()
                .invokeVirtual(AbstractGroupedAccumulatorState.class, "getGroupId", long.class)
                .invokeVirtual(bigArrayType, "get", stateField.getType(), long.class)
                .ret(stateField.getType());

        // Generate setter
        definition.declareMethod(new CompilerContext(null), a(PUBLIC), stateField.getSetterName(), type(void.class), arg("value", stateField.getType()))
                .getBody()
                .comment("return field.set(getGroupId(), value);")
                .pushThis()
                .getField(field)
                .pushThis()
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        LabelNode match = new LabelNode("match");
        LabelNode noMatch = new LabelNode("noMatch");

        LabelNode defaultLabel = new LabelNode("default");

        CompilerContext context = generatorContext.getContext();

        ByteCodeNode switchBlock;
        if (constantValues.size() < 1000) {
            Block switchCaseBlocks = new Block(context);
            LookupSwitch.LookupSwitchBuilder switchBuilder = lookupSwitchBuilder();
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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())
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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())
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            ClassDefinition classDefinition,
            Expression filter,
            List<Expression> projections,
            IdentityHashMap<Expression, Type> expressionTypes)
    {
        MethodDefinition filterAndProjectMethod = classDefinition.declareMethod(new CompilerContext(bootstrap.getBootstrapMethod()),
                a(PUBLIC),
                "filterAndProjectRowOriented",
                type(void.class),
                arg("page", com.facebook.presto.operator.Page.class),
                arg("pageBuilder", PageBuilder.class));

        CompilerContext compilerContext = filterAndProjectMethod.getCompilerContext();

        LocalVariableDefinition positionVariable = compilerContext.declareVariable(int.class, "position");

        LocalVariableDefinition rowsVariable = compilerContext.declareVariable(int.class, "rows");
        filterAndProjectMethod.getBody()
                .comment("int rows = page.getPositionCount();")
                .getVariable("page")
                .invokeVirtual(com.facebook.presto.operator.Page.class, "getPositionCount", int.class)
                .putVariable(rowsVariable);

        List<Integer> allInputChannels = getInputChannels(Iterables.concat(projections, ImmutableList.of(filter)));
        for (int channel : allInputChannels) {
            LocalVariableDefinition blockVariable = compilerContext.declareVariable(com.facebook.presto.spi.block.Block.class, "block_" + channel);
            filterAndProjectMethod.getBody()
                    .comment("Block %s = page.getBlock(%s);", blockVariable.getName(), channel)
                    .getVariable("page")
                    .push(channel)
                    .invokeVirtual(com.facebook.presto.operator.Page.class, "getBlock", com.facebook.presto.spi.block.Block.class, int.class)
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        filterAndProjectMethod.getBody().ret();
    }

    private void generateFilterAndProjectCursorMethod(BootstrapEntry bootstrap, ClassDefinition classDefinition, List<Expression> projections)
    {
        MethodDefinition filterAndProjectMethod = classDefinition.declareMethod(new CompilerContext(bootstrap.getBootstrapMethod()),
                a(PUBLIC),
                "filterAndProjectRowOriented",
                type(int.class),
                arg("cursor", RecordCursor.class),
                arg("pageBuilder", PageBuilder.class));

        CompilerContext compilerContext = filterAndProjectMethod.getCompilerContext();

        LocalVariableDefinition completedPositionsVariable = compilerContext.declareVariable(int.class, "completedPositions");
        filterAndProjectMethod.getBody()
                .comment("int completedPositions = 0;")
                .putVariable(completedPositionsVariable, 0);

        //
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            boolean sourceIsCursor,
            TimeZoneKey timeZoneKey)
    {
        MethodDefinition filterMethod;
        if (sourceIsCursor) {
            filterMethod = classDefinition.declareMethod(new CompilerContext(bootstrap.getBootstrapMethod()),
                    a(PUBLIC),
                    "filter",
                    type(boolean.class),
                    arg("cursor", RecordCursor.class));
        }
        else {
            filterMethod = classDefinition.declareMethod(new CompilerContext(bootstrap.getBootstrapMethod()),
                    a(PUBLIC),
                    "filter",
                    type(boolean.class),
                    ImmutableList.<NamedParameterDefinition>builder()
                        .add(arg("position", int.class))
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            boolean sourceIsCursor,
            TimeZoneKey timeZoneKey)
    {
        MethodDefinition projectionMethod;
        if (sourceIsCursor) {
            projectionMethod = classDefinition.declareMethod(new CompilerContext(bootstrap.getBootstrapMethod()),
                    a(PUBLIC),
                    methodName,
                    type(void.class),
                    arg("cursor", RecordCursor.class),
                    arg("output", BlockBuilder.class));
        }
        else {
            ImmutableList.Builder<NamedParameterDefinition> parameters = ImmutableList.builder();
            parameters.add(arg("position", int.class));
            parameters.addAll(toBlockParameters(getInputChannels(projection)));
            parameters.add(arg("output", BlockBuilder.class));

            projectionMethod = classDefinition.declareMethod(new CompilerContext(bootstrap.getBootstrapMethod()),
                    a(PUBLIC),
                    methodName,
                    type(void.class),
                    parameters.build());
        }

        projectionMethod.comment("Projection: %s", projection.toString());

        // generate body code
        CompilerContext context = projectionMethod.getCompilerContext();
        context.declareVariable(type(boolean.class), "wasNull");
        Block getSessionByteCode = new Block(context).pushThis().getField(classDefinition.getType(), "session", type(ConnectorSession.class));

        ByteCodeNode body = compileExpression(bootstrap, projection, expressionTypes, sourceIsCursor, timeZoneKey, context, getSessionByteCode);

        projectionMethod
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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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