SEL_ARG Class Reference

Inheritance diagram for SEL_ARG:

List of all members.

Public Types
enum	leaf_color { BLACK, RED }
enum	Type {   IMPOSSIBLE, ALWAYS, MAYBE, MAYBE_KEY,   KEY_RANGE }
enum	{ MAX_SEL_ARGS = 16000 }
Public Member Functions
	SEL_ARG (SEL_ARG &)
	SEL_ARG (Field *, const uchar *, const uchar *)
	SEL_ARG (Field *field, uint8 part, uchar *min_value, uchar *max_value, uint8 min_flag, uint8 max_flag, uint8 maybe_flag)
	SEL_ARG (enum Type type_arg)
bool	is_same (const SEL_ARG *arg) const
bool	all_same (const SEL_ARG *arg) const
void	merge_flags (SEL_ARG *arg)
void	maybe_smaller ()
bool	is_null_interval ()
int	cmp_min_to_min (const SEL_ARG *arg) const
int	cmp_min_to_max (const SEL_ARG *arg) const
int	cmp_max_to_max (const SEL_ARG *arg) const
int	cmp_max_to_min (const SEL_ARG *arg) const
SEL_ARG *	clone_and (SEL_ARG *arg)
SEL_ARG *	clone_first (SEL_ARG *arg)
SEL_ARG *	clone_last (SEL_ARG *arg)
SEL_ARG *	clone (RANGE_OPT_PARAM *param, SEL_ARG *new_parent, SEL_ARG **next)
bool	copy_min (SEL_ARG *arg)
bool	copy_max (SEL_ARG *arg)
void	copy_min_to_min (SEL_ARG *arg)
void	copy_min_to_max (SEL_ARG *arg)
void	copy_max_to_min (SEL_ARG *arg)
int	store_min (uint length, uchar **min_key, uint min_key_flag)
int	store_max (uint length, uchar **max_key, uint max_key_flag)
int	store_min_key (KEY_PART *key, uchar **range_key, uint *range_key_flag, uint last_part)
int	store_max_key (KEY_PART *key, uchar **range_key, uint *range_key_flag, uint last_part)
SEL_ARG *	insert (SEL_ARG *key)
SEL_ARG *	tree_delete (SEL_ARG *key)
SEL_ARG *	find_range (SEL_ARG *key)
SEL_ARG *	rb_insert (SEL_ARG *leaf)
void	test_use_count (SEL_ARG *root)
SEL_ARG *	first ()
const SEL_ARG *	first () const
SEL_ARG *	last ()
void	make_root ()
bool	simple_key ()
void	increment_use_count (long count)
void	free_tree ()
SEL_ARG **	parent_ptr ()
bool	is_singlepoint () const
SEL_ARG *	clone_tree (RANGE_OPT_PARAM *param)
Public Attributes
uint8	min_flag
uint8	max_flag
uint8	maybe_flag
uint8	part
uint8	maybe_null
uint16	elements
ulong	use_count
Field *	field
uchar *	min_value
uchar *	max_value
SEL_ARG *	left
SEL_ARG *	right
SEL_ARG *	next
SEL_ARG *	prev
SEL_ARG *	parent
SEL_ARG *	next_key_part
enum SEL_ARG::leaf_color	color
enum SEL_ARG::Type	type
Friends
SEL_ARG *	rb_delete_fixup (SEL_ARG *root, SEL_ARG *key, SEL_ARG *par)
int	test_rb_tree (SEL_ARG *element, SEL_ARG *parent)

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Member Enumeration Documentation

enum SEL_ARG::Type

Starting an effort to document this field:

IMPOSSIBLE: if the range predicate for this index is always false.

ALWAYS: if the range predicate for this index is always true.

KEY_RANGE: if there is a range predicate that can be used on this index.

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Member Function Documentation

bool SEL_ARG::all_same

(

const SEL_ARG *

arg

)

const [inline]

returns true if all the predicates in the keypart tree are equal

SEL_ARG * SEL_ARG::first

(

)

This gives the first SEL_ARG in the interval list, and the minimal element in the red-black tree

Returns:

SEL_ARG first SEL_ARG in the interval list

bool SEL_ARG::is_same

(

const SEL_ARG *

arg

)

const [inline]

returns true if a range predicate is equal. Use all_same() to check for equality of all the predicates on this keypart.

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

• opt_range.cc