lbug 0.18.0

An in-process property graph database management system built for query speed and scalability
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38

#pragma once

#include <memory>

#include "common/types/value/value.h"
#include "expression.h"

namespace lbug {
namespace binder {

class LBUG_API ParameterExpression final : public Expression {
    static constexpr common::ExpressionType expressionType = common::ExpressionType::PARAMETER;

public:
    explicit ParameterExpression(const std::string& parameterName, common::Value value)
        : Expression{expressionType, value.getDataType().copy(), createUniqueName(parameterName)},
          parameterName(parameterName), value{std::make_shared<common::Value>(std::move(value))} {}

    explicit ParameterExpression(const std::string& parameterName,
        std::shared_ptr<common::Value> value)
        : Expression{expressionType, value->getDataType().copy(), createUniqueName(parameterName)},
          parameterName(parameterName), value{std::move(value)} {}

    void cast(const common::LogicalType& type) override;

    common::Value getValue() const { return *value; }

private:
    std::string toStringInternal() const override { return "$" + parameterName; }
    static std::string createUniqueName(const std::string& input) { return "$" + input; }

private:
    std::string parameterName;
    std::shared_ptr<common::Value> value;
};

} // namespace binder
} // namespace lbug