drogon::orm::Row Class Reference

Reference to one row in a result. More...

#include <drogon/orm/Row.h>

Inheritance diagram for drogon::orm::Row:

Public Types
using	SizeType = size_t
using	Reference = Field
using	ConstIterator = ConstRowIterator
using	Iterator = ConstIterator
using	ConstReverseIterator = ConstReverseRowIterator
using	DifferenceType = long

Public Member Functions
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
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
	Row (const Row &r) noexcept=default
	Row (Row &&) noexcept=default
Row &	operator= (const Row &) noexcept=default

Protected Member Functions
	Row (const Result &r, SizeType index) noexcept

Protected Attributes
long	index_ {0}
Row::SizeType	end_ {0}

Friends
class	Field
class	Result

Detailed Description

Reference to one row in a result.

A row represents one row (also called a row) in a query result set. It also acts as a container mapping column numbers or names to field values (see below):

    cout << row["date"].as<std::string>() << ": " <<
*row["name"].as<std::string>() << endl;

The row itself acts like a (non-modifyable) container, complete with its own const_iterator and const_reverse_iterator.

Member Data Documentation

index_

long drogon::orm::Row::index_ {0}

protected

Row number You'd expect this to be a size_t, but due to the way reverse iterators are related to regular iterators, it must be allowed to underflow to -1.

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The documentation for this class was generated from the following file:

• orm_lib/inc/drogon/orm/Row.h