QUICK_RANGE Class Reference

#include <range_optimizer.h>

Public Member Functions
	QUICK_RANGE ()
	QUICK_RANGE (MEM_ROOT *mem_root, const uchar *min_key_arg, uint min_length_arg, key_part_map min_keypart_map_arg, const uchar *max_key_arg, uint max_length_arg, key_part_map max_keypart_map_arg, uint flag_arg, enum ha_rkey_function rkey_func)
void	make_min_endpoint (key_range *kr, uint prefix_length, key_part_map keypart_map)
	Initializes a key_range object for communication with storage engine. More...
void	make_min_endpoint (key_range *kr)
	Initializes a key_range object for communication with storage engine. More...
void	make_max_endpoint (key_range *kr, uint prefix_length, key_part_map keypart_map)
	Initializes a key_range object for communication with storage engine. More...
void	make_max_endpoint (key_range *kr)
	Initializes a key_range object for communication with storage engine. More...

Public Attributes
uchar *	min_key
uchar *	max_key
uint16	min_length
uint16	max_length
uint16	flag
	Stores bitwise-or'ed bits defined in enum key_range_flags. More...
enum ha_rkey_function	rkey_func_flag
	Stores one of the HA_READ_MBR_XXX items in enum ha_rkey_function, only effective when flag has a GEOM_FLAG bit. More...
key_part_map	min_keypart_map
key_part_map	max_keypart_map

Constructor & Destructor Documentation

QUICK_RANGE() [1/2]

QUICK_RANGE::QUICK_RANGE

(

)

QUICK_RANGE() [2/2]

QUICK_RANGE::QUICK_RANGE	(	MEM_ROOT *	mem_root,
		const uchar *	min_key_arg,
		uint	min_length_arg,
		key_part_map	min_keypart_map_arg,
		const uchar *	max_key_arg,
		uint	max_length_arg,
		key_part_map	max_keypart_map_arg,
		uint	flag_arg,
		enum ha_rkey_function	rkey_func
	)

Member Function Documentation

make_max_endpoint() [1/2]

void QUICK_RANGE::make_max_endpoint ( key_range *  kr )

inline

Initializes a key_range object for communication with storage engine.

This function facilitates communication with the Storage Engine API by translating the maximum endpoint of the interval represented by this QUICK_RANGE into an index range endpoint specifier for the engine.

Parameters

kr	Pointer to an uninitialized key_range C struct.

make_max_endpoint() [2/2]

void QUICK_RANGE::make_max_endpoint ( key_range *  kr, uint  prefix_length, key_part_map  keypart_map  )

inline

Initializes a key_range object for communication with storage engine.

This function facilitates communication with the Storage Engine API by translating the maximum endpoint of the interval represented by this QUICK_RANGE into an index range endpoint specifier for the engine.

Parameters

kr	Pointer to an uninitialized key_range C struct.
prefix_length	The length of the search key prefix to be used for lookup.
keypart_map	A set (bitmap) of keyparts to be used.

make_min_endpoint() [1/2]

void QUICK_RANGE::make_min_endpoint ( key_range *  kr )

inline

Initializes a key_range object for communication with storage engine.

This function facilitates communication with the Storage Engine API by translating the minimum endpoint of the interval represented by this QUICK_RANGE into an index range endpoint specifier for the engine.

Parameters

kr	Pointer to an uninitialized key_range C struct.

make_min_endpoint() [2/2]

void QUICK_RANGE::make_min_endpoint ( key_range *  kr, uint  prefix_length, key_part_map  keypart_map  )

inline

Initializes a key_range object for communication with storage engine.

This function facilitates communication with the Storage Engine API by translating the minimum endpoint of the interval represented by this QUICK_RANGE into an index range endpoint specifier for the engine.

Parameters

kr	Pointer to an uninitialized key_range C struct.
prefix_length	The length of the search key prefix to be used for lookup.
keypart_map	A set (bitmap) of keyparts to be used.

Member Data Documentation

flag

uint16 QUICK_RANGE::flag

Stores bitwise-or'ed bits defined in enum key_range_flags.

max_key

uchar * QUICK_RANGE::max_key

max_keypart_map

key_part_map QUICK_RANGE::max_keypart_map

max_length

uint16 QUICK_RANGE::max_length

min_key

uchar* QUICK_RANGE::min_key

min_keypart_map

key_part_map QUICK_RANGE::min_keypart_map

min_length

uint16 QUICK_RANGE::min_length

rkey_func_flag

enum ha_rkey_function QUICK_RANGE::rkey_func_flag

Stores one of the HA_READ_MBR_XXX items in enum ha_rkey_function, only effective when flag has a GEOM_FLAG bit.

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

• sql/range_optimizer/range_optimizer.h
• sql/range_optimizer/range_optimizer.cc