SelectSessionVariablesHandler Class Reference

capture the system-variables. More...

Inheritance diagram for SelectSessionVariablesHandler:

Public Member Functions
	SelectSessionVariablesHandler (MysqlRoutingClassicConnectionBase *connection)
void	on_column_count (uint64_t count) override
void	on_column (const classic_protocol::message::server::ColumnMeta &) override
void	on_row (const classic_protocol::message::server::Row &row) override
void	on_row_end (const classic_protocol::message::server::Eof &) override
void	on_ok (const classic_protocol::message::server::Ok &) override
void	on_error (const classic_protocol::message::server::Error &err) override
Public Member Functions inherited from QuerySender::Handler
virtual	~Handler ()=default

Private Attributes
uint64_t	col_count_ {}
uint64_t	col_cur_ {}
MysqlRoutingClassicConnectionBase *	connection_
bool	something_failed_ {false}
std::deque< std::pair< std::string, Value > >	session_variables_

Detailed Description

capture the system-variables.

Expects a resultset similar to that of:

SELECT <key>, <value>
  FROM performance_schema.session_variables
 WHERE VARIABLE_NAME IN ('collation_connection')

• 2 columns (column-names are ignored)
• multiple rows

Constructor & Destructor Documentation

SelectSessionVariablesHandler()

SelectSessionVariablesHandler::SelectSessionVariablesHandler ( MysqlRoutingClassicConnectionBase *  connection )

inline

Member Function Documentation

on_column()

void SelectSessionVariablesHandler::on_column ( const classic_protocol::message::server::ColumnMeta &  )

inlineoverridevirtual

Reimplemented from QuerySender::Handler.

on_column_count()

void SelectSessionVariablesHandler::on_column_count ( uint64_t  count )

inlineoverridevirtual

Reimplemented from QuerySender::Handler.

on_error()

void SelectSessionVariablesHandler::on_error ( const classic_protocol::message::server::Error &  err )

inlineoverridevirtual

Reimplemented from QuerySender::Handler.

on_ok()

void SelectSessionVariablesHandler::on_ok ( const classic_protocol::message::server::Ok &  )

inlineoverridevirtual

Reimplemented from QuerySender::Handler.

on_row()

void SelectSessionVariablesHandler::on_row ( const classic_protocol::message::server::Row &  row )

inlineoverridevirtual

Reimplemented from QuerySender::Handler.

on_row_end()

void SelectSessionVariablesHandler::on_row_end ( const classic_protocol::message::server::Eof &  )

inlineoverridevirtual

Reimplemented from QuerySender::Handler.

Member Data Documentation

col_count_

uint64_t SelectSessionVariablesHandler::col_count_ {}

private

col_cur_

uint64_t SelectSessionVariablesHandler::col_cur_ {}

private

connection_

MysqlRoutingClassicConnectionBase* SelectSessionVariablesHandler::connection_

private

session_variables_

std::deque<std::pair<std::string, Value> > SelectSessionVariablesHandler::session_variables_

private

something_failed_

bool SelectSessionVariablesHandler::something_failed_ {false}

private

---

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

• router/src/routing/src/classic_lazy_connect.cc