Package com.facebook.presto.sql.tree

Examples of com.facebook.presto.sql.tree.FunctionCall

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            if (node.getSampleType() == SampleNode.Type.BERNOULLI) {
                PlanNode rewrittenSource = planRewriter.rewrite(node.getSource(), context);

                ComparisonExpression expression = new ComparisonExpression(
                        ComparisonExpression.Type.LESS_THAN,
                        new FunctionCall(QualifiedName.of("rand"), ImmutableList.<Expression>of()),
                        new DoubleLiteral(Double.toString(node.getSampleRatio())));
                return new FilterNode(node.getId(), rewrittenSource, expression);
            }
            else if (node.getSampleType() == SampleNode.Type.SYSTEM) {
                return rewriteNode(node, context, planRewriter);
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            ImmutableMap.Builder<Symbol, FunctionCall> functionCalls = ImmutableMap.builder();
            for (Map.Entry<Symbol, FunctionCall> entry : node.getAggregations().entrySet()) {
                Symbol symbol = entry.getKey();

                if (expectedOutputs.contains(symbol)) {
                    FunctionCall call = entry.getValue();
                    expectedInputs.addAll(DependencyExtractor.extractUnique(call));

                    functionCalls.put(symbol, call);
                    functions.put(symbol, node.getFunctions().get(symbol));
                }
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            ImmutableMap.Builder<Symbol, FunctionCall> functionCalls = ImmutableMap.builder();
            for (Map.Entry<Symbol, FunctionCall> entry : node.getWindowFunctions().entrySet()) {
                Symbol symbol = entry.getKey();

                if (expectedOutputs.contains(symbol)) {
                    FunctionCall call = entry.getValue();
                    expectedInputs.addAll(DependencyExtractor.extractUnique(call));

                    functionCalls.put(symbol, call);
                    functions.put(symbol, node.getFunctionHandles().get(symbol));
                }
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                Symbol intermediateSymbol = allocator.newSymbol(function.getName().getSuffix(), function.getIntermediateType());
                intermediateCalls.put(intermediateSymbol, entry.getValue());
                intermediateFunctions.put(intermediateSymbol, functionHandle);

                // rewrite final aggregation in terms of intermediate function
                finalCalls.put(entry.getKey(), new FunctionCall(function.getName(), ImmutableList.<Expression>of(new QualifiedNameReference(intermediateSymbol.toQualifiedName()))));
            }

            // create partial aggregation plan
            AggregationNode partialAggregation = new AggregationNode(idAllocator.getNextId(), plan.getRoot(), groupBy, intermediateCalls, intermediateFunctions, PARTIAL);
            plan.setRoot(new SinkNode(idAllocator.getNextId(), partialAggregation, partialAggregation.getOutputSymbols()));
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                        node.getTable(),
                        node.getColumns(),
                        intermediateOutput);
                subPlanBuilder.setRoot(writer);

                FunctionCall aggregate = new FunctionCall(sum.getName(),
                        ImmutableList.<Expression>of(new QualifiedNameReference(intermediateOutput.toQualifiedName())));

                return addDistributedAggregation(subPlanBuilder,
                        ImmutableMap.of(node.getOutput(), aggregate),
                        ImmutableMap.of(node.getOutput(), sum.getHandle()),
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        }

        if (object instanceof Double) {
            Double value = (Double) object;
            if (value.isNaN()) {
                return new FunctionCall(new QualifiedName("nan"), ImmutableList.<Expression>of());
            }
            else if (value == Double.NEGATIVE_INFINITY) {
                return new NegativeExpression(new FunctionCall(new QualifiedName("infinity"), ImmutableList.<Expression>of()));
            }
            else if (value == Double.POSITIVE_INFINITY) {
                return new FunctionCall(new QualifiedName("infinity"), ImmutableList.<Expression>of());
            }
            else {
                return new DoubleLiteral(object.toString());
            }
        }
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    public void testFilter()
            throws Exception
    {
        PlanNode node = filter(baseTableScan,
                and(
                        greaterThan(AE, new FunctionCall(QualifiedName.of("rand"), ImmutableList.<Expression>of())),
                        lessThan(BE, number(10))));

        Expression effectivePredicate = EffectivePredicateExtractor.extract(node);

        // Non-deterministic functions should be purged
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        return new IsNullPredicate(expression);
    }

    private static FunctionCall fakeFunction(String name)
    {
        return new FunctionCall(QualifiedName.of("test"), ImmutableList.<Expression>of());
    }
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    public void testFilter()
            throws Exception
    {
        PlanNode node = filter(baseTableScan,
                and(
                        greaterThan(AE, new FunctionCall(QualifiedName.of("rand"), ImmutableList.<Expression>of())),
                        lessThan(BE, number(10))));

        Expression effectivePredicate = EffectivePredicateExtractor.extract(node, TYPES);

        // Non-deterministic functions should be purged
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        return new IsNullPredicate(expression);
    }

    private static FunctionCall fakeFunction(String name)
    {
        return new FunctionCall(QualifiedName.of("test"), ImmutableList.<Expression>of());
    }
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Related Classes of com.facebook.presto.sql.tree.FunctionCall

  • com.facebook.presto.sql.gen.ByteCodeExpressionVisitor
  • com.facebook.presto.sql.planner.DistributedLogicalPlanner$Visitor
  • com.facebook.presto.sql.planner.ExpressionInterpreter
  • com.facebook.presto.sql.planner.ExpressionInterpreter$Visitor
  • com.facebook.presto.sql.planner.LiteralInterpreter
  • com.facebook.presto.sql.planner.optimizations.CanonicalizeExpressions$CanonicalizeExpressionRewriter
  • com.facebook.presto.sql.planner.optimizations.CountConstantOptimizer$Rewriter
  • com.facebook.presto.sql.planner.optimizations.ImplementSampleAsFilter$Rewriter
  • com.facebook.presto.sql.planner.optimizations.PruneUnreferencedOutputs$Rewriter
  • com.facebook.presto.sql.planner.optimizations.UnaliasSymbolReferences$Rewriter
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