Query_result_to_object_store Class Reference

#include <query_result.h>

Inheritance diagram for Query_result_to_object_store:

Public Member Functions
	Query_result_to_object_store (sql_exchange *ex)
bool	send_data (THD *, const mem_root_deque< Item * > &) override
bool	send_eof (THD *thd) override
	Returns true incase of an error. More...
void	cleanup () override
	Reset the number of affected rows. More...
bool	export_result_to_object_storage () const override
	Returns true if the data has to be exported to object store. More...
bool	use_protocol_adapter () const override
sql_exchange *	get_sql_exchange ()
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
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	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	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 bool	use_protocol_wrapper () const
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
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_object_store()

Query_result_to_object_store::Query_result_to_object_store ( sql_exchange *  ex )

inlineexplicit

Member Function Documentation

cleanup()

void Query_result_to_object_store::cleanup ( )

overridevirtual

Reset the number of affected rows.

Reimplemented from Query_result.

export_result_to_object_storage()

bool Query_result_to_object_store::export_result_to_object_storage ( ) const

inlineoverridevirtual

Returns true if the data has to be exported to object store.

Reimplemented from Query_result.

get_sql_exchange()

sql_exchange * Query_result_to_object_store::get_sql_exchange ( )

inline

send_data()

bool Query_result_to_object_store::send_data ( THD *  , const mem_root_deque< Item * > &    )

inlineoverridevirtual

Implements Query_result.

send_eof()

bool Query_result_to_object_store::send_eof ( THD *  thd )

overridevirtual

Returns true incase of an error.

Implements Query_result.

use_protocol_adapter()

bool Query_result_to_object_store::use_protocol_adapter ( ) const

inlineoverridevirtual

Returns

true if an alternative implementation may replace this with a protocol adapter.

Reimplemented from Query_result.

Member Data Documentation

exchange

sql_exchange* Query_result_to_object_store::exchange

protected

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

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