Error handler which converts errors during database directory removal to warnings/messages to error log. More...

Inheritance diagram for Rmdir_error_handler:

Public Member Functions
	Rmdir_error_handler ()

bool	handle_condition (THD thd, uint, const char , Sql_condition::enum_severity_level , const char msg) override
	Handle a sql condition. More...

Private Attributes
bool	m_is_active
	Indicates that we are already in the process of handling some error. More...

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

Error handler which converts errors during database directory removal to warnings/messages to error log.

Constructor & Destructor Documentation

Rmdir_error_handler::Rmdir_error_handler ( )

inline

bool Rmdir_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.

bool Rmdir_error_handler::m_is_active

private

Indicates that we are already in the process of handling some error.

Allows to re-emit error/warning from the error handler without falling into infinite recursion.

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