Row.h

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// Taken from libpqxx and modified.
// The license for libpqxx can be found in the COPYING file.
 
#pragma once
 
#include <drogon/exports.h>
#include <drogon/orm/Result.h>
#include <string>
 
namespace drogon
{
namespace orm
{
class Field;
class ConstRowIterator;
class ConstReverseRowIterator;


class DROGON_EXPORT Row
{
  public:
    using SizeType = size_t;
    using Reference = Field;
    using ConstIterator = ConstRowIterator;
    using Iterator = ConstIterator;
    using ConstReverseIterator = ConstReverseRowIterator;
 
    using DifferenceType = long;
 
    Reference operator[](SizeType index) const noexcept;
    Reference operator[](int index) const noexcept;
    Reference operator[](const char columnName[]) const;
    Reference operator[](const std::string &columnName) const;
 
    Reference at(SizeType index) const;
    Reference at(const char columnName[]) const;
    Reference at(const std::string &columnName) const;
 
    SizeType size() const;
 
    SizeType capacity() const noexcept
    {
        return size();
    }
 
    ConstIterator begin() const noexcept;
    ConstIterator cbegin() const noexcept;
    ConstIterator end() const noexcept;
    ConstIterator cend() const noexcept;
 
    ConstReverseIterator rbegin() const;
    ConstReverseIterator crbegin() const;
    ConstReverseIterator rend() const;
    ConstReverseIterator crend() const;
 
#ifdef _MSC_VER
    Row() noexcept = default;
#endif
 
    Row(const Row &r) noexcept = default;
    Row(Row &&) noexcept = default;
    Row &operator=(const Row &) noexcept = default;
 
  private:
    Result result_;
 
  protected:
    friend class Field;
    long index_{0};
    Row::SizeType end_{0};
    friend class Result;
    Row(const Result &r, SizeType index) noexcept;
};
 
}  // namespace orm
}  // namespace drogon