sp_cursor::Query_fetch_into_spvars Class Reference

An interceptor of cursor result set used to implement FETCH <cname> INTO <varlist>. More...

Inheritance diagram for sp_cursor::Query_fetch_into_spvars:

Public Member Functions
	Query_fetch_into_spvars ()
uint	get_field_count ()
void	set_spvar_list (List< sp_variable > *vars)
bool	send_eof (THD *) override
bool	send_data (THD *thd, const mem_root_deque< Item * > &items) override
bool	prepare (THD *thd, const mem_root_deque< Item * > &list, Query_expression *u) override
	Perform preparation specific to the query expression or DML statement. More...
Public Member Functions inherited from Query_result_interceptor
	Query_result_interceptor ()
uint	field_count (const mem_root_deque< Item * > &) const override
bool	send_result_set_metadata (THD *, const mem_root_deque< Item * > &, uint) override
bool	is_interceptor () const final
	Checks if this Query_result intercepts and transforms the result set. More...
Public Member Functions inherited from Query_result
	Query_result ()
virtual	~Query_result ()=default
virtual bool	needs_file_privilege () const
virtual bool	change_query_result (THD *, Query_result *)
	Change wrapped Query_result. More...
virtual bool	need_explain_interceptor () const
virtual bool	start_execution (THD *)
	Prepare for execution of the query expression or DML statement. More...
virtual bool	create_table_for_query_block (THD *)
	Create table, only needed to support CREATE TABLE ... SELECT. More...
virtual bool	check_supports_cursor () const
	Check if this query result set supports cursors. More...
virtual void	abort_result_set (THD *)
virtual bool	reset ()
	Cleanup after one execution of the unit, to be ready for a next execution inside the same statement. More...
virtual void	cleanup ()
	Cleanup after this execution. More...
virtual void	set_limit (ha_rows)
	Only overridden (and non-empty) for Query_result_union, q.v. More...
virtual Server_side_cursor *	cursor () const

Private Attributes
List< sp_variable > *	spvar_list
uint	field_count

Additional Inherited Members
Public Attributes inherited from Query_result
ha_rows	estimated_rowcount
	Number of records estimated in this result. More...
double	estimated_cost
	Cost to execute the subquery which produces this result. More...
Protected Attributes inherited from Query_result
Query_expression *	unit

Detailed Description

An interceptor of cursor result set used to implement FETCH <cname> INTO <varlist>.

Constructor & Destructor Documentation

Query_fetch_into_spvars()

sp_cursor::Query_fetch_into_spvars::Query_fetch_into_spvars ( )

inline

Member Function Documentation

get_field_count()

uint sp_cursor::Query_fetch_into_spvars::get_field_count ( )

inline

prepare()

bool sp_cursor::Query_fetch_into_spvars::prepare ( THD *  , const mem_root_deque< Item * > &  , Query_expression *  u  )

overridevirtual

Perform preparation specific to the query expression or DML statement.

Returns

false if success, true if error

Reimplemented from Query_result.

send_data()

bool sp_cursor::Query_fetch_into_spvars::send_data ( THD *  thd, const mem_root_deque< Item * > &  items  )

overridevirtual

Implements Query_result.

send_eof()

bool sp_cursor::Query_fetch_into_spvars::send_eof ( THD *  )

inlineoverridevirtual

Implements Query_result.

set_spvar_list()

void sp_cursor::Query_fetch_into_spvars::set_spvar_list ( List< sp_variable > *  vars )

inline

Member Data Documentation

field_count

uint sp_cursor::Query_fetch_into_spvars::field_count

private

spvar_list

List<sp_variable>* sp_cursor::Query_fetch_into_spvars::spvar_list

private

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

• sql/sp_rcontext.h
• sql/sp_rcontext.cc