Package com.facebook.presto.sql.analyzer

Examples of com.facebook.presto.sql.analyzer.TupleDescriptor

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    @Override
    protected RelationPlan visitAliasedRelation(AliasedRelation node, Void context)
    {
        RelationPlan subPlan = process(node.getRelation(), context);

        TupleDescriptor outputDescriptor = analysis.getOutputDescriptor(node);

        return new RelationPlan(subPlan.getRoot(), outputDescriptor, subPlan.getOutputSymbols());
    }
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            throw new UnsupportedOperationException("STRATIFY ON is not yet implemented");
        }

        RelationPlan subPlan = process(node.getRelation(), context);

        TupleDescriptor outputDescriptor = analysis.getOutputDescriptor(node);
        double ratio = analysis.getSampleRatio(node);
        Symbol sampleWeightSymbol = null;
        if (node.getType() == SampledRelation.Type.POISSONIZED) {
            sampleWeightSymbol = symbolAllocator.newSymbol("$sampleWeight", BigintType.BIGINT);
        }
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        RelationPlan rightPlan = process(node.getRight(), context);

        PlanBuilder leftPlanBuilder = initializePlanBuilder(leftPlan);
        PlanBuilder rightPlanBuilder = initializePlanBuilder(rightPlan);

        TupleDescriptor outputDescriptor = analysis.getOutputDescriptor(node);

        // NOTE: symbols must be in the same order as the outputDescriptor
        List<Symbol> outputSymbols = ImmutableList.<Symbol>builder()
                .addAll(leftPlan.getOutputSymbols())
                .addAll(rightPlan.getOutputSymbols())
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    }

    @Override
    protected RelationPlan visitValues(Values node, Void context)
    {
        TupleDescriptor descriptor = analysis.getOutputDescriptor(node);
        ImmutableList.Builder<Symbol> outputSymbolsBuilder = ImmutableList.builder();
        for (Field field : descriptor.getVisibleFields()) {
            Symbol symbol = symbolAllocator.newSymbol(field);
            outputSymbolsBuilder.add(symbol);
        }

        ImmutableList.Builder<List<Expression>> rows = ImmutableList.builder();
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            RelationPlan relationPlan = process(relation, context);

            List<Symbol> childOutputSymobls = relationPlan.getOutputSymbols();
            if (unionOutputSymbols == null) {
                // Use the first Relation to derive output symbol names
                TupleDescriptor descriptor = relationPlan.getDescriptor();
                ImmutableList.Builder<Symbol> outputSymbolBuilder = ImmutableList.builder();
                for (Field field : descriptor.getVisibleFields()) {
                    int fieldIndex = descriptor.indexOf(field);
                    Symbol symbol = childOutputSymobls.get(fieldIndex);
                    outputSymbolBuilder.add(symbolAllocator.newSymbol(symbol.getName(), symbolAllocator.getTypes().get(symbol)));
                }
                unionOutputSymbols = outputSymbolBuilder.build();
            }

            TupleDescriptor descriptor = relationPlan.getDescriptor();
            checkArgument(descriptor.getVisibleFieldCount() == unionOutputSymbols.size(),
                    "Expected relation to have %s symbols but has %s symbols",
                    descriptor.getVisibleFieldCount(),
                    unionOutputSymbols.size());

            int unionFieldId = 0;
            for (Field field : descriptor.getVisibleFields()) {
                int fieldIndex = descriptor.indexOf(field);
                symbolMapping.put(unionOutputSymbols.get(unionFieldId), childOutputSymobls.get(fieldIndex));
                unionFieldId++;
            }

            sources.add(relationPlan.getRoot());
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    {
        ImmutableList.Builder<Symbol> outputs = ImmutableList.builder();
        ImmutableList.Builder<String> names = ImmutableList.builder();

        int columnNumber = 0;
        TupleDescriptor outputDescriptor = analysis.getOutputDescriptor();
        for (Field field : outputDescriptor.getVisibleFields()) {
            String name = field.getName().or("_col" + columnNumber);
            names.add(name);

            int fieldIndex = outputDescriptor.indexOf(field);
            Symbol symbol = plan.getSymbol(fieldIndex);
            outputs.add(symbol);

            columnNumber++;
        }
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    private RelationPlan planImplicitTable()
    {
        List<Expression> emptyRow = ImmutableList.of();
        return new RelationPlan(
                new ValuesNode(idAllocator.getNextId(), ImmutableList.<Symbol>of(), ImmutableList.of(emptyRow)),
                new TupleDescriptor(),
                ImmutableList.<Symbol>of());
    }
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                RelationPlan subPlan = process(namedQuery, null);
                return new RelationPlan(subPlan.getRoot(), analysis.getOutputDescriptor(node), subPlan.getOutputSymbols());
            }
        }

        TupleDescriptor descriptor = analysis.getOutputDescriptor(node);
        TableHandle handle = analysis.getTableHandle(node);

        ImmutableList.Builder<Symbol> outputSymbolsBuilder = ImmutableList.builder();
        ImmutableMap.Builder<Symbol, ColumnHandle> columns = ImmutableMap.builder();
        for (int i = 0; i < descriptor.getFields().size(); i++) {
            Field field = descriptor.getFields().get(i);
            Symbol symbol = symbolAllocator.newSymbol(field.getName().get(), field.getType());

            outputSymbolsBuilder.add(symbol);
            columns.put(symbol, analysis.getColumn(field));
        }
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    @Override
    protected RelationPlan visitAliasedRelation(AliasedRelation node, Void context)
    {
        RelationPlan subPlan = process(node.getRelation(), context);

        TupleDescriptor outputDescriptor = analysis.getOutputDescriptor(node);

        return new RelationPlan(subPlan.getRoot(), outputDescriptor, subPlan.getOutputSymbols());
    }
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            throw new UnsupportedOperationException("STRATIFY ON is not yet implemented");
        }

        RelationPlan subPlan = process(node.getRelation(), context);

        TupleDescriptor outputDescriptor = analysis.getOutputDescriptor(node);
        double ratio = analysis.getSampleRatio(node);
        return new RelationPlan(
                new SampleNode(idAllocator.getNextId(), subPlan.getRoot(), ratio, SampleNode.Type.fromType(node.getType())),
                outputDescriptor,
                subPlan.getOutputSymbols());
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Related Classes of com.facebook.presto.sql.analyzer.TupleDescriptor

  • com.facebook.presto.sql.planner.LogicalPlanner
  • com.facebook.presto.sql.planner.optimizations.PredicatePushDown$Rewriter
  • com.facebook.presto.sql.planner.QueryPlanner
  • com.facebook.presto.sql.planner.RelationPlanner
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