Result_set Class Reference

A result set contains the result of a query. More...

#include <protocol_local_v2.h>

Public Member Functions
	Result_set ()
	Result_set (List< Row< value_t > > *rows_arg, Row< Column_metadata > *fields, size_t column_count, ulonglong affected_rows, ulonglong last_insert_id)
	~Result_set ()=default
Row< value_t > *	get_next_row ()
	Get the next row. More...
bool	is_last_row ()
	Check if the iterator is at the last row. More...
ulonglong	get_num_affected_rows () const
	Get the num affected row count. More...
ulonglong	get_last_insert_id () const
	Get the last insert id. More...
List< Row< value_t > > *	get_rows ()
	Get the list of rows from result set. More...
	operator List< Row< value_t > > & ()
	Get reference for rows in results set. More...
unsigned int	size () const
	Get number for rows in result set. More...
Row< Column_metadata > *	get_fields ()
	Get the field metadata. More...
size_t	get_field_count () const
	Get the field count in result set. More...
bool	has_next ()
	Check if we have more than one result set. More...
Result_set *	get_next ()
	Get the next result set object. More...
void	set_next (Result_set *ptr)
	Set the current result set pointer. More...
void	update (List< Row< value_t > > *rows_arg, Row< Column_metadata > *fields, size_t column_count, ulonglong affected_rows, ulonglong last_insert_id)
	Update the members of result set. More...

Static Public Member Functions
static void *	operator new (size_t size, MEM_ROOT *mem_root, const std::nothrow_t &=std::nothrow) noexcept
	Custom memory allocation for Result set object. More...
static void	operator delete (void *) noexcept
static void	operator delete (void *, MEM_ROOT *, const std::nothrow_t &) noexcept

Private Member Functions
	Result_set (const Result_set &)=delete
Result_set &	operator= (Result_set &)=delete
	Result_set (const Result_set &&)=delete
Result_set &	operator= (Result_set &&)=delete

Private Attributes
Row< Column_metadata > *	m_fields {nullptr}
size_t	m_column_count {0}
List< Row< value_t > > *	m_rows {nullptr}
List_iterator_fast< Row< value_t > >	m_row_iterator
Result_set *	m_next {nullptr}
ulonglong	m_affected_row {0}
ulonglong	m_last_insert_id {0}

Detailed Description

A result set contains the result of a query.

It is a collection of Rows and its metadata

Constructor & Destructor Documentation

Result_set() [1/4]

Result_set::Result_set ( const Result_set &  )

privatedelete

Result_set() [2/4]

Result_set::Result_set ( const Result_set &&  )

privatedelete

Result_set() [3/4]

Result_set::Result_set

(

)

Result_set() [4/4]

Result_set::Result_set	(	List< Row< value_t > > *	rows_arg,
		Row< Column_metadata > *	fields,
		size_t	column_count,
		ulonglong	affected_rows,
		ulonglong	last_insert_id
	)

~Result_set()

Result_set::~Result_set ( )

default

Member Function Documentation

get_field_count()

size_t Result_set::get_field_count ( ) const

inline

Get the field count in result set.

Returns

size_t

get_fields()

Row< Column_metadata > * Result_set::get_fields ( )

inline

Get the field metadata.

Returns

Row<Column_metadata>*

get_last_insert_id()

ulonglong Result_set::get_last_insert_id ( ) const

inline

Get the last insert id.

Returns

uint

get_next()

Result_set * Result_set::get_next ( )

inline

Get the next result set object.

Returns

Result_set*

get_next_row()

Row< value_t > * Result_set::get_next_row ( )

inline

Get the next row.

Returns

void*

get_num_affected_rows()

ulonglong Result_set::get_num_affected_rows ( ) const

inline

Get the num affected row count.

Returns

uint

get_rows()

List< Row< value_t > > * Result_set::get_rows ( )

inline

Get the list of rows from result set.

Returns

List<Row<value_t>>*

has_next()

bool Result_set::has_next ( )

inline

Check if we have more than one result set.

Returns

true

false

is_last_row()

bool Result_set::is_last_row ( )

inline

Check if the iterator is at the last row.

Returns

true

false

operator delete() [1/2]

static void Result_set::operator delete ( void *  )

inlinestaticnoexcept

operator delete() [2/2]

static void Result_set::operator delete ( void *  , MEM_ROOT *  , const std::nothrow_t &    )

inlinestaticnoexcept

operator List< Row< value_t > > &()

Result_set::operator List< Row< value_t > > & ( )

inline

Get reference for rows in results set.

Returns

List<Row<value_t>> &

operator new()

static void * Result_set::operator new ( size_t  size, MEM_ROOT *  mem_root, const std::nothrow_t &  = std::nothrow  )

inlinestaticnoexcept

Custom memory allocation for Result set object.

Parameters

size	size of the memory
mem_root	mem root object pointer

Returns

void*

operator=() [1/2]

Result_set & Result_set::operator= ( Result_set &&  )

privatedelete

operator=() [2/2]

Result_set & Result_set::operator= ( Result_set &  )

privatedelete

set_next()

void Result_set::set_next ( Result_set *  ptr )

inline

Set the current result set pointer.

Generally used when traversing through all result set.

Parameters

ptr	pointer to result set

size()

unsigned int Result_set::size ( ) const

inline

Get number for rows in result set.

Returns

unsigned int

update()

void Result_set::update ( List< Row< value_t > > *  rows_arg, Row< Column_metadata > *  fields, size_t  column_count, ulonglong  affected_rows, ulonglong  last_insert_id  )

inline

Update the members of result set.

Member Data Documentation

m_affected_row

ulonglong Result_set::m_affected_row {0}

private

m_column_count

size_t Result_set::m_column_count {0}

private

m_fields

Row<Column_metadata>* Result_set::m_fields {nullptr}

private

m_last_insert_id

ulonglong Result_set::m_last_insert_id {0}

private

m_next

Result_set* Result_set::m_next {nullptr}

private

m_row_iterator

List_iterator_fast<Row<value_t> > Result_set::m_row_iterator

private

m_rows

List<Row<value_t> >* Result_set::m_rows {nullptr}

private

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

• sql/statement/protocol_local_v2.h
• sql/statement/protocol_local_v2.cc