lbug 0.16.1

An in-process property graph database management system built for query speed and scalability
Documentation 
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#pragma once

#include "processor/operator/physical_operator.h"
#include "set_executor.h"

namespace lbug {
namespace processor {

struct SetPropertyPrintInfo final : OPPrintInfo {
    std::vector<binder::expression_pair> expressions;

    explicit SetPropertyPrintInfo(std::vector<binder::expression_pair> expressions)
        : expressions(std::move(expressions)) {}

    std::string toString() const override;

    std::unique_ptr<OPPrintInfo> copy() const override {
        return std::unique_ptr<SetPropertyPrintInfo>(new SetPropertyPrintInfo(*this));
    }

private:
    SetPropertyPrintInfo(const SetPropertyPrintInfo& other)
        : OPPrintInfo(other), expressions(other.expressions) {}
};

class SetNodeProperty final : public PhysicalOperator {
    static constexpr PhysicalOperatorType type_ = PhysicalOperatorType::SET_PROPERTY;

public:
    SetNodeProperty(std::vector<std::unique_ptr<NodeSetExecutor>> executors,
        std::unique_ptr<PhysicalOperator> child, uint32_t id,
        std::unique_ptr<OPPrintInfo> printInfo)
        : PhysicalOperator{type_, std::move(child), id, std::move(printInfo)},
          executors{std::move(executors)} {}

    bool isParallel() const override { return false; }

    void initLocalStateInternal(ResultSet* resultSet, ExecutionContext* context) override;

    bool getNextTuplesInternal(ExecutionContext* context) override;

    std::unique_ptr<PhysicalOperator> copy() override {
        return std::make_unique<SetNodeProperty>(copyVector(executors), children[0]->copy(), id,
            printInfo->copy());
    }

private:
    std::vector<std::unique_ptr<NodeSetExecutor>> executors;
};

class SetRelProperty final : public PhysicalOperator {
    static constexpr PhysicalOperatorType type_ = PhysicalOperatorType::SET_PROPERTY;

public:
    SetRelProperty(std::vector<std::unique_ptr<RelSetExecutor>> executors,
        std::unique_ptr<PhysicalOperator> child, uint32_t id,
        std::unique_ptr<OPPrintInfo> printInfo)
        : PhysicalOperator{type_, std::move(child), id, std::move(printInfo)},
          executors{std::move(executors)} {}

    bool isParallel() const override { return false; }

    void initLocalStateInternal(ResultSet* resultSet, ExecutionContext* context) override;

    bool getNextTuplesInternal(ExecutionContext* context) override;

    std::unique_ptr<PhysicalOperator> copy() override {
        return std::make_unique<SetRelProperty>(copyVector(executors), children[0]->copy(), id,
            printInfo->copy());
    }

private:
    std::vector<std::unique_ptr<RelSetExecutor>> executors;
};

} // namespace processor
} // namespace lbug