Query_result_to_file Class Reference

#include <query_result.h>

Inheritance diagram for Query_result_to_file:

Public Member Functions
	Query_result_to_file (sql_exchange *ex)
	~Query_result_to_file () override
bool	needs_file_privilege () const override
bool	check_supports_cursor () const override
	Check if this query result set supports cursors. More...
bool	send_eof (THD *thd) override
void	cleanup () override
	Cleanup after this execution. 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	change_query_result (THD *, Query_result *)
	Change wrapped Query_result. More...
virtual bool	need_explain_interceptor () const
virtual bool	prepare (THD *, const mem_root_deque< Item * > &, Query_expression *u)
	Perform preparation specific to the query expression or DML statement. More...
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	send_data (THD *thd, const mem_root_deque< Item * > &items)=0
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	set_limit (ha_rows)
	Only overridden (and non-empty) for Query_result_union, q.v. More...
virtual Server_side_cursor *	cursor () const

Protected Attributes
sql_exchange *	exchange
File	file
IO_CACHE	cache
ha_rows	row_count
char	path [FN_REFLEN]
Protected Attributes inherited from Query_result
Query_expression *	unit

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...

Constructor & Destructor Documentation

Query_result_to_file()

Query_result_to_file::Query_result_to_file ( sql_exchange *  ex )

inlineexplicit

~Query_result_to_file()

Query_result_to_file::~Query_result_to_file ( )

inlineoverride

Member Function Documentation

check_supports_cursor()

bool Query_result_to_file::check_supports_cursor ( ) const

overridevirtual

Check if this query result set supports cursors.

Returns

false if success, true if error

Reimplemented from Query_result.

cleanup()

void Query_result_to_file::cleanup ( )

overridevirtual

Cleanup after this execution.

Completes the execution and resets object before next execution of a prepared statement/stored procedure.

Reimplemented from Query_result.

Reimplemented in Query_result_export.

needs_file_privilege()

bool Query_result_to_file::needs_file_privilege ( ) const

inlineoverridevirtual

Reimplemented from Query_result.

send_eof()

bool Query_result_to_file::send_eof ( THD *  thd )

overridevirtual

Implements Query_result.

Member Data Documentation

cache

IO_CACHE Query_result_to_file::cache

protected

exchange

sql_exchange* Query_result_to_file::exchange

protected

file

File Query_result_to_file::file

protected

path

char Query_result_to_file::path[FN_REFLEN]

protected

row_count

ha_rows Query_result_to_file::row_count

protected

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

• sql/query_result.h
• sql/query_result.cc