Package com.facebook.presto.byteCode

Examples of com.facebook.presto.byteCode.Variable$SetVariableByteCodeExpression

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                        .add(arg("position", int.class))
                        .build());

        method.comment("Filter: %s", filter.toString());

        Variable positionVariable = context.getVariable("position");
        Variable wasNullVariable = context.declareVariable(type(boolean.class), "wasNull");

        ByteCodeExpressionVisitor visitor = new ByteCodeExpressionVisitor(
                callSiteBinder,
                fieldReferenceCompiler(callSiteBinder, positionVariable, wasNullVariable),
                metadata.getFunctionRegistry());
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                        .add(arg("output", BlockBuilder.class))
                        .build());

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

        Variable positionVariable = context.getVariable("position");
        Variable outputVariable = context.getVariable("output");

        Variable wasNullVariable = context.declareVariable(type(boolean.class), "wasNull");

        Block body = method.getBody()
                .comment("boolean wasNull = false;")
                .putVariable(wasNullVariable, projection.getType().getJavaType() == void.class);
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        // We should be able to insert the code to get the output variable and compute the value
        // at the right place instead of assuming they are in the stack. We should also not need to
        // use temp variables to re-shuffle the stack to the right shape before Type.writeXXX is called
        // Unfortunately, because of the assumptions made by try_cast, we can't get around it yet.
        // TODO: clean up once try_cast is fixed
        Variable tempValue = context.createTempVariable(type.getJavaType());
        Variable tempOutput = context.createTempVariable(BlockBuilder.class);
        return new Block(context)
                .comment("if (wasNull)")
                .append(new IfStatement.IfStatementBuilder(context)
                        .condition(new Block(context).getVariable(wasNullVariable))
                        .ifTrue(new Block(context)
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                "hashPosition",
                type(int.class),
                arg("blockIndex", int.class),
                arg("blockPosition", int.class));

        Variable resultVariable = hashPositionMethod.getCompilerContext().declareVariable(int.class, "result");
        hashPositionMethod.getBody().push(0).putVariable(resultVariable);

        for (int index = 0; index < joinChannelTypes.size(); index++) {
            ByteCodeExpression type = constantType(compilerContext, callSiteBinder, joinChannelTypes.get(index));
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                "hashRow",
                type(int.class),
                arg("position", int.class),
                arg("blocks", com.facebook.presto.spi.block.Block[].class));

        Variable resultVariable = hashPositionMethod.getCompilerContext().declareVariable(int.class, "result");
        hashPositionMethod.getBody().push(0).putVariable(resultVariable);

        for (int index = 0; index < joinChannelTypes.size(); index++) {
            ByteCodeExpression type = constantType(compilerContext, callSiteBinder, joinChannelTypes.get(index));
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                arg("rightBlockPosition", int.class));

        for (int index = 0; index < joinChannelTypes.size(); index++) {
            ByteCodeExpression type = constantType(compilerContext, callSiteBinder, joinChannelTypes.get(index));

            Variable blockIndex = compilerContext.getVariable("leftBlockIndex");
            ByteCodeExpression leftBlock = compilerContext
                    .getVariable("this")
                    .getField(joinChannelFields.get(index))
                    .invoke("get", Object.class, blockIndex)
                    .cast(com.facebook.presto.spi.block.Block.class);
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        List<Variable> parameterVariables = new ArrayList<>();
        for (int i = 0; i < countInputChannels(parameterMetadatas); i++) {
            parameterVariables.add(context.declareVariable(com.facebook.presto.spi.block.Block.class, "block" + i));
        }
        Variable masksBlock = context.declareVariable(com.facebook.presto.spi.block.Block.class, "masksBlock");
        Variable sampleWeightsBlock = null;
        if (sampleWeightChannelField != null) {
            sampleWeightsBlock = context.declareVariable(com.facebook.presto.spi.block.Block.class, "sampleWeightsBlock");
        }

        body.comment("masksBlock = maskChannel.transform(page.blockGetter()).orNull();")
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            @Nullable Variable sampleWeightsBlock,
            CallSiteBinder callSiteBinder,
            boolean grouped)
    {
        // For-loop over rows
        Variable positionVariable = context.declareVariable(int.class, "position");
        Variable sampleWeightVariable = null;
        if (sampleWeightsBlock != null) {
            sampleWeightVariable = context.declareVariable(long.class, "sampleWeight");
        }
        Variable rowsVariable = context.declareVariable(int.class, "rows");

        Block block = new Block(context)
                .getVariable("page")
                .invokeVirtual(Page.class, "getPositionCount", int.class)
                .putVariable(rowsVariable)
                .initializeVariable(positionVariable);
        if (sampleWeightVariable != null) {
            block.initializeVariable(sampleWeightVariable);
        }

        Block loopBody = generateInvokeInputFunction(context, stateField, positionVariable, sampleWeightVariable, parameterVariables, parameterMetadatas, inputFunction, callSiteBinder, grouped);

        //  Wrap with null checks
        List<Boolean> nullable = new ArrayList<>();
        for (ParameterMetadata metadata : parameterMetadatas) {
            if (metadata.getParameterType() == INPUT_CHANNEL) {
                nullable.add(false);
            }
            else if (metadata.getParameterType() == NULLABLE_INPUT_CHANNEL) {
                nullable.add(true);
            }
        }
        checkState(nullable.size() == parameterVariables.size(), "Number of parameters does not match");
        for (int i = 0; i < parameterVariables.size(); i++) {
            if (!nullable.get(i)) {
                IfStatementBuilder builder = ifStatementBuilder(context);
                Variable variableDefinition = parameterVariables.get(i);
                builder.comment("if(!%s.isNull(position))", variableDefinition.getName())
                        .condition(new Block(context)
                                .getVariable(variableDefinition)
                                .getVariable(positionVariable)
                                .invokeInterface(com.facebook.presto.spi.block.Block.class, "isNull", boolean.class, int.class))
                        .ifTrue(NOP)
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    {
        CompilerContext context = new CompilerContext();

        Block body = declareAddIntermediate(definition, grouped, context);

        Variable scratchStateVariable = context.declareVariable(singleStateClass, "scratchState");
        Variable positionVariable = context.declareVariable(int.class, "position");

        body.comment("scratchState = stateFactory.createSingleState();")
                .pushThis()
                .getField(stateFactoryField)
                .invokeInterface(AccumulatorStateFactory.class, "createSingleState", Object.class)
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        if (grouped) {
            generateEnsureCapacity(stateField, body);
        }

        Variable positionVariable = context.declareVariable(int.class, "position");

        Block loopBody = generateInvokeInputFunction(context, stateField, positionVariable, null, ImmutableList.of(context.getVariable("block")), parameterMetadatas, intermediateInputFunction, callSiteBinder, grouped);

        body.append(generateBlockNonNullPositionForLoop(context, positionVariable, loopBody))
                .ret();
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Related Classes of com.facebook.presto.byteCode.Variable$SetVariableByteCodeExpression

  • com.facebook.presto.byteCode.expression.TestSetFieldByteCodeExpression
  • com.facebook.presto.byteCode.expression.TestSetVariableByteCodeExpression
  • com.facebook.presto.byteCode.instruction.VariableInstruction
  • com.facebook.presto.operator.aggregation.AccumulatorCompiler
  • com.facebook.presto.operator.aggregation.state.StateCompiler
  • com.facebook.presto.operator.scalar.ArrayConstructor
  • com.facebook.presto.operator.scalar.MapConstructor
  • com.facebook.presto.sql.gen.ByteCodeExpressionVisitor
  • com.facebook.presto.sql.gen.ByteCodeUtils
  • com.facebook.presto.sql.gen.CursorProcessorCompiler
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