dfield_t Struct Reference

Structure for an SQL data field. More...

#include <data0data.h>

Public Member Functions
bool	is_ext () const
bool	is_virtual () const
void	reset ()
dfield_t *	clone (mem_heap_t *heap)
	Create a deep copy of this object. More...
byte *	blobref () const
uint32_t	lob_version () const
	Obtain the LOB version number, if this is an externally stored field. More...
	dfield_t ()
std::ostream &	print (std::ostream &out) const
	Print the dfield_t object into the given output stream. More...
void	adjust_v_data_mysql (const dict_v_col_t *vcol, bool comp, const byte *field, ulint len, mem_heap_t *heap)
	Adjust and(or) set virtual column value which is read from undo or online DDL log. More...

Public Attributes
void *	data
	pointer to data More...
bool	ext
	true=externally stored, false=local More...
unsigned	spatial_status: 2
	spatial status of externally stored field in undo log for purge More...
unsigned	len
	data length; UNIV_SQL_NULL if SQL null More...
dtype_t	type
	type of data More...

Detailed Description

Structure for an SQL data field.

Constructor & Destructor Documentation

dfield_t()

dfield_t::dfield_t ( )

inline

Member Function Documentation

adjust_v_data_mysql()

void dfield_t::adjust_v_data_mysql	(	const dict_v_col_t *	vcol,
		bool	comp,
		const byte *	field,
		ulint	len,
		mem_heap_t *	heap
	)

Adjust and(or) set virtual column value which is read from undo or online DDL log.

Parameters

[in]	vcol	virtual column definition
[in]	comp	true if compact format
[in]	field	virtual column value
[in]	len	value length
[in,out]	heap	memory heap to keep value when necessary

blobref()

byte * dfield_t::blobref

(

)

const

clone()

dfield_t * dfield_t::clone

(

mem_heap_t *

heap

)

Create a deep copy of this object.

Parameters

[in]

heap

the memory heap in which the clone will be created.

Returns

the cloned object.

is_ext()

bool dfield_t::is_ext ( ) const

inline

is_virtual()

bool dfield_t::is_virtual ( ) const

inline

lob_version()

uint32_t dfield_t::lob_version

(

)

const

Obtain the LOB version number, if this is an externally stored field.

print()

std::ostream & dfield_t::print

(

std::ostream &

out

)

const

Print the dfield_t object into the given output stream.

Parameters

[in]

out

the output stream.

Returns

the output stream.

reset()

void dfield_t::reset ( void  )

inline

Member Data Documentation

data

void* dfield_t::data

pointer to data

ext

bool dfield_t::ext

true=externally stored, false=local

len

unsigned dfield_t::len

data length; UNIV_SQL_NULL if SQL null

spatial_status

unsigned dfield_t::spatial_status

spatial status of externally stored field in undo log for purge

type

dtype_t dfield_t::type

type of data

---

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

• storage/innobase/include/data0data.h
• storage/innobase/data/data0data.cc