Package com.facebook.presto.metadata

Examples of com.facebook.presto.metadata.Signature

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        return new Signature(SWITCH, returnType.getName());
    }

    public static Signature whenSignature(Type returnType)
    {
        return new Signature("WHEN", returnType.getName());
    }
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    @Override
    public FunctionInfo specialize(Map<String, Type> types, int arity)
    {
        Type keyType = types.get("K");
        Type valueType = types.get("V");
        Signature signature = new Signature(NAME, valueType.getName(), valueType.getName(), keyType.getName());
        InternalAggregationFunction aggregation = generateAggregation(valueType, keyType);
        return new FunctionInfo(signature, getDescription(), aggregation.getIntermediateType().getName(), aggregation, false);
    }
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                for (Expression argument : entry.getValue().getArguments()) {
                    Symbol argumentSymbol = Symbol.fromQualifiedName(((QualifiedNameReference) argument).getName());
                    arguments.add(source.getLayout().get(argumentSymbol));
                }
                Symbol symbol = entry.getKey();
                Signature signature = node.getSignatures().get(symbol);
                windowFunctionsBuilder.add(metadata.getExactFunction(signature).bindWindowFunction(arguments.build()));
                windowFunctionOutputSymbolsBuilder.add(symbol);
            }

            List<Symbol> windowFunctionOutputSymbols = windowFunctionOutputSymbolsBuilder.build();
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    public FunctionInfo specialize(Map<String, Type> types, int arity)
    {
        Type keyType = types.get("K");
        Type valueType = types.get("V");

        return new FunctionInfo(new Signature(SUBSCRIPT.name(), valueType.getName(), parameterizedTypeName("map", keyType.getName(), valueType.getName()), keyType.getName()), "Map subscript", true, lookupMethod(keyType.getJavaType(), valueType.getJavaType()), true, true, ImmutableList.of(false, false));
    }
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        ImmutableList.Builder<String> builder = ImmutableList.builder();
        for (int i = 0; i < pairs; i++) {
            builder.add("K");
            builder.add("V");
        }
        signature = new Signature("map", ImmutableList.of(typeParameter("K"), typeParameter("V")), "map<K,V>", builder.build(), false, true);
    }
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        }
        catch (NoSuchMethodException | IllegalAccessException e) {
            throw Throwables.propagate(e);
        }
        Type mapType = typeManager.getParameterizedType(MAP.getName(), ImmutableList.of(keyType.getName(), valueType.getName()));
        Signature signature = new Signature("map", ImmutableList.<TypeParameter>of(), mapType.getName(), actualArgumentNames.build(), false, true);
        List<Boolean> nullableParameters = ImmutableList.copyOf(Collections.nCopies(stackTypes.size(), true));
        return new FunctionInfo(signature, "Constructs a map of the given entries", true, methodHandle, true, false, nullableParameters);
    }
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            Map<Symbol, FunctionCall> finalCalls = new HashMap<>();
            Map<Symbol, FunctionCall> intermediateCalls = new HashMap<>();
            Map<Symbol, Signature> intermediateFunctions = new HashMap<>();
            Map<Symbol, Symbol> intermediateMask = new HashMap<>();
            for (Map.Entry<Symbol, FunctionCall> entry : aggregations.entrySet()) {
                Signature signature = functions.get(entry.getKey());
                FunctionInfo function = metadata.getExactFunction(signature);

                Symbol intermediateSymbol = allocator.newSymbol(function.getName().getSuffix(), metadata.getType(function.getIntermediateType()));
                intermediateCalls.put(intermediateSymbol, entry.getValue());
                intermediateFunctions.put(intermediateSymbol, signature);
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    @Override
    public FunctionInfo specialize(Map<String, Type> types, int arity)
    {
        checkArgument(types.size() == 1, "Cardinality expects only one argument");
        Type type = types.get("E");
        return new FunctionInfo(new Signature("cardinality", StandardTypes.BIGINT, parameterizedTypeName("array", type.getName())), "Returns the cardinality (length) of the array", false, METHOD_HANDLE, true, true, ImmutableList.of(false));
    }
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            Map<Symbol, FunctionCall> finalCalls = new HashMap<>();
            Map<Symbol, FunctionCall> intermediateCalls = new HashMap<>();
            Map<Symbol, Signature> intermediateFunctions = new HashMap<>();
            Map<Symbol, Symbol> intermediateMask = new HashMap<>();
            for (Map.Entry<Symbol, FunctionCall> entry : aggregations.entrySet()) {
                Signature signature = functions.get(entry.getKey());
                FunctionInfo function = metadata.getFunction(signature);

                Symbol intermediateSymbol = allocator.newSymbol(function.getName().getSuffix(), function.getIntermediateType());
                intermediateCalls.put(intermediateSymbol, entry.getValue());
                intermediateFunctions.put(intermediateSymbol, signature);
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            ImmutableList.Builder<WindowFunction> windowFunctions = ImmutableList.builder();
            List<Symbol> windowFunctionOutputSymbols = new ArrayList<>();
            for (Map.Entry<Symbol, FunctionCall> entry : node.getWindowFunctions().entrySet()) {
                Symbol symbol = entry.getKey();
                Signature signature = node.getSignatures().get(symbol);
                windowFunctions.add(metadata.getFunction(signature).getWindowFunction().get());
                windowFunctionOutputSymbols.add(symbol);
            }

            // compute the layout of the output from the window operator
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Related Classes of com.facebook.presto.metadata.Signature

  • com.facebook.presto.ml.TestEvaluateClassifierPredictions
  • com.facebook.presto.operator.aggregation.CountColumn
  • com.facebook.presto.operator.aggregation.MaxBy
  • com.facebook.presto.operator.aggregation.TestMaxByAggregation
  • com.facebook.presto.operator.scalar.ArrayCardinalityFunction
  • com.facebook.presto.operator.scalar.MapConstructor
  • com.facebook.presto.operator.scalar.MapSubscriptOperator
  • com.facebook.presto.operator.window.ReflectionWindowFunctionSupplier
  • com.facebook.presto.spi.type.Type
  • com.facebook.presto.spi.type.TypeSignature
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