81 lines
2.0 KiB
C++
81 lines
2.0 KiB
C++
#ifndef QUERY_RECORD_HPP
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#define QUERY_RECORD_HPP
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#include "matador/sql/field.hpp"
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#include <vector>
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#include <unordered_map>
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namespace matador::sql {
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class column;
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class record final {
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private:
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using field_ref = std::reference_wrapper<field>;
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using field_by_index = std::vector<field_ref>;
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using field_index_pair = std::pair<field, field_by_index::difference_type>;
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using field_by_name_map = std::unordered_map<std::string, field_index_pair>;
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public:
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using iterator = field_by_index::iterator;
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using const_iterator = field_by_index::const_iterator;
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record() = default;
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record(std::initializer_list<field> columns);
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explicit record(const std::vector<field> &columns);
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record(const record &x);
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record& operator=(const record &x);
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record(record&&) noexcept = default;
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record& operator=(record&&) noexcept = default;
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~record() = default;
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template<class Operator>
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void process(Operator &op) {
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for(auto &f : fields_) {
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f.get().process(op);
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}
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}
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void append(const field &col);
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[[nodiscard]] const std::vector<field_ref>& columns() const;
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[[nodiscard]] const field& at(const sql::column &col) const;
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[[nodiscard]] const field& at(size_t index) const;
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template<class Type>
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std::optional<Type> at(const column &col) const {
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return at(col).as<Type>();
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}
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template<class Type>
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std::optional<Type> at(const size_t index) const {
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return at(index).as<Type>();
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}
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iterator find(const std::string &column_name);
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[[nodiscard]] const_iterator find(const std::string &column_name) const;
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iterator begin();
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[[nodiscard]] const_iterator begin() const;
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[[nodiscard]] const_iterator cbegin() const;
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iterator end();
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[[nodiscard]] const_iterator end() const;
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[[nodiscard]] const_iterator cend() const;
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[[nodiscard]] size_t size() const;
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[[nodiscard]] bool empty() const;
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void clear();
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private:
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void init();
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void add_to_map(field &col, size_t index);
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private:
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field_by_index fields_;
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field_by_name_map fields_by_name_;
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};
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}
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#endif //QUERY_RECORD_HPP
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