cmp_item_string Class Reference

#include <item_cmpfunc.h>

Inheritance diagram for cmp_item_string:

Public Member Functions
	cmp_item_string (const CHARSET_INFO *cs)
int	compare (const cmp_item *ci) const override
void	store_value (Item *item) override
int	cmp (Item *arg) override
cmp_item *	make_same () override
Public Member Functions inherited from cmp_item
	cmp_item ()=default
virtual	~cmp_item ()=default
virtual bool	allocate_value_comparators (MEM_ROOT *mem_root, cmp_item *tmpl, Item *arg)
	Allocate comparator objects for each value object, based on the template comparator objects. More...
virtual void	store_value_by_template (cmp_item *, Item *item)

Private Attributes
const String *	value_res
StringBuffer< STRING_BUFFER_USUAL_SIZE >	value
const CHARSET_INFO *	cmp_charset

Additional Inherited Members
Static Public Member Functions inherited from cmp_item
static cmp_item *	new_comparator (THD *thd, Item_result result_type, Item *item, const CHARSET_INFO *cs)
	Create an appropriate comparator for the given type. More...
Protected Member Functions inherited from cmp_item_scalar
void	set_null_value (bool nv) override
Protected Attributes inherited from cmp_item_scalar
bool	m_null_value
	If stored value is NULL. More...

Constructor & Destructor Documentation

cmp_item_string()

cmp_item_string::cmp_item_string ( const CHARSET_INFO *  cs )

inline

Member Function Documentation

cmp()

int cmp_item_string::cmp ( Item *  item )

overridevirtual

Returns

result (true, false or UNKNOWN) of "stored argument's value <> item's value"

Implements cmp_item.

compare()

int cmp_item_string::compare ( const cmp_item *  ci ) const

inlineoverridevirtual

Implements cmp_item.

make_same()

cmp_item * cmp_item_string::make_same ( )

overridevirtual

Implements cmp_item.

store_value()

void cmp_item_string::store_value ( Item *  item )

inlineoverridevirtual

Implements cmp_item.

Member Data Documentation

cmp_charset

const CHARSET_INFO* cmp_item_string::cmp_charset

private

value

StringBuffer<STRING_BUFFER_USUAL_SIZE> cmp_item_string::value

private

value_res

const String* cmp_item_string::value_res

private

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

• sql/item_cmpfunc.h
• sql/item_cmpfunc.cc