Repair_mrg_table_error_handler Class Reference

This internal handler is used to trap ER_NO_SUCH_TABLE and ER_WRONG_MRG_TABLE errors during CHECK/REPAIR TABLE for MERGE tables. More...

Inheritance diagram for Repair_mrg_table_error_handler:

Public Member Functions
	Repair_mrg_table_error_handler ()
bool	handle_condition (THD *, uint sql_errno, const char *, Sql_condition::enum_severity_level *, const char *) override
	Handle a sql condition. More...
bool	safely_trapped_errors ()
	Returns true if there were ER_NO_SUCH_/WRONG_MRG_TABLE and there were no unhandled errors. More...
	Repair_mrg_table_error_handler ()
bool	handle_condition (THD *, uint sql_errno, const char *, Sql_condition::enum_severity_level *, const char *) override
	Handle a sql condition. More...
bool	safely_trapped_errors ()
	Returns true if there were ER_NO_SUCH_/WRONG_MRG_TABLE and there were no unhandled errors. More...

Private Attributes
bool	m_handled_errors
bool	m_unhandled_errors

Additional Inherited Members
Protected Member Functions inherited from Internal_error_handler
	Internal_error_handler ()
Internal_error_handler *	prev_internal_handler () const
virtual	~Internal_error_handler ()=default

Detailed Description

This internal handler is used to trap ER_NO_SUCH_TABLE and ER_WRONG_MRG_TABLE errors during CHECK/REPAIR TABLE for MERGE tables.

Constructor & Destructor Documentation

Repair_mrg_table_error_handler() [1/2]

Repair_mrg_table_error_handler::Repair_mrg_table_error_handler ( )

inline

Repair_mrg_table_error_handler() [2/2]

Repair_mrg_table_error_handler::Repair_mrg_table_error_handler ( )

inline

Member Function Documentation

handle_condition() [1/2]

bool Repair_mrg_table_error_handler::handle_condition ( THD *  thd, uint  sql_errno, const char *  sqlstate, Sql_condition::enum_severity_level *  level, const char *  msg  )

inlineoverridevirtual

Handle a sql condition.

This method can be implemented by a subclass to achieve any of the following:

• mask a warning/error internally, prevent exposing it to the user,
• mask a warning/error and throw another one instead. When this method returns true, the sql condition is considered 'handled', and will not be propagated to upper layers. It is the responsibility of the code installing an internal handler to then check for trapped conditions, and implement logic to recover from the anticipated conditions trapped during runtime.

This mechanism is similar to C++ try/throw/catch:

• 'try' correspond to THD::push_internal_handler(),
• 'throw' correspond to my_error(), which invokes my_message_sql(),
• 'catch' correspond to checking how/if an internal handler was invoked, before removing it from the exception stack with THD::pop_internal_handler().

Parameters

thd	the calling thread
sql_errno	the error number for the condition raised.
sqlstate	the SQLSTATE for the condition raised.
level	the severity level for the condition raised.
msg	the error message for the condition raised.

Returns

true if the condition is handled

Implements Internal_error_handler.

handle_condition() [2/2]

bool Repair_mrg_table_error_handler::handle_condition ( THD *  thd, uint  sql_errno, const char *  sqlstate, Sql_condition::enum_severity_level *  level, const char *  msg  )

inlineoverridevirtual

Handle a sql condition.

This method can be implemented by a subclass to achieve any of the following:

• mask a warning/error internally, prevent exposing it to the user,
• mask a warning/error and throw another one instead. When this method returns true, the sql condition is considered 'handled', and will not be propagated to upper layers. It is the responsibility of the code installing an internal handler to then check for trapped conditions, and implement logic to recover from the anticipated conditions trapped during runtime.

This mechanism is similar to C++ try/throw/catch:

• 'try' correspond to THD::push_internal_handler(),
• 'throw' correspond to my_error(), which invokes my_message_sql(),
• 'catch' correspond to checking how/if an internal handler was invoked, before removing it from the exception stack with THD::pop_internal_handler().

Parameters

thd	the calling thread
sql_errno	the error number for the condition raised.
sqlstate	the SQLSTATE for the condition raised.
level	the severity level for the condition raised.
msg	the error message for the condition raised.

Returns

true if the condition is handled

Implements Internal_error_handler.

safely_trapped_errors() [1/2]

bool Repair_mrg_table_error_handler::safely_trapped_errors ( )

inline

Returns true if there were ER_NO_SUCH_/WRONG_MRG_TABLE and there were no unhandled errors.

false otherwise.

safely_trapped_errors() [2/2]

bool Repair_mrg_table_error_handler::safely_trapped_errors ( )

inline

Returns true if there were ER_NO_SUCH_/WRONG_MRG_TABLE and there were no unhandled errors.

false otherwise.

Member Data Documentation

m_handled_errors

bool Repair_mrg_table_error_handler::m_handled_errors

private

m_unhandled_errors

bool Repair_mrg_table_error_handler::m_unhandled_errors

private

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

• sql/error_handler.cc
• sql/sql_base.cc