sp_instr_error Class Reference

sp_instr_error just throws an SQL-condition if the execution flow comes to it. More...

#include <sp_instr.h>

Inheritance diagram for sp_instr_error:

Public Member Functions
	sp_instr_error (uint ip, sp_pcontext *ctx, int errcode)
void	print (const THD *thd, String *str) override
bool	execute (THD *, uint *nextp) override
	Execute this instruction. More...
uint	opt_mark (sp_head *, List< sp_instr > *) override
	Mark this instruction as reachable during optimization and return the index to the next instruction. More...
PSI_statement_info *	get_psi_info () override
Public Member Functions inherited from sp_instr
	sp_instr (uint ip, sp_pcontext *ctx)
	~sp_instr () override
uint	get_ip () const
virtual uint	get_cont_dest () const
	Get the continuation destination (instruction pointer for the CONTINUE HANDLER) of this instruction. More...
sp_pcontext *	get_parsing_ctx () const
virtual uint	opt_shortcut_jump (sp_head *, sp_instr *start)
	Short-cut jumps to jumps during optimization. More...
virtual void	opt_move (uint dst, List< sp_branch_instr > *ibp)
	Inform the instruction that it has been moved during optimization. More...
bool	opt_is_marked () const
virtual SQL_I_List< Item_trigger_field > *	get_instr_trig_field_list ()
Public Member Functions inherited from sp_printable
virtual	~sp_printable ()=default

Static Public Attributes
static PSI_statement_info	psi_info

Private Attributes
int	m_errcode
	The error code, which should be raised by this instruction. More...

Additional Inherited Members
Public Attributes inherited from sp_instr
Query_arena	m_arena
Protected Member Functions inherited from sp_instr
void	clear_da (THD *thd) const
	Clear diagnostics area. More...
Protected Attributes inherited from sp_instr
bool	m_marked
	Show if this instruction is reachable within the SP (used by SP-optimizer). More...
uint	m_ip
	Instruction pointer. More...
sp_pcontext *	m_parsing_ctx
	Instruction parsing context. More...

Detailed Description

sp_instr_error just throws an SQL-condition if the execution flow comes to it.

It's used in the CASE implementation to perform runtime-check that the CASE-expression is handled by some WHEN/ELSE clause.

Constructor & Destructor Documentation

sp_instr_error()

sp_instr_error::sp_instr_error ( uint  ip, sp_pcontext *  ctx, int  errcode  )

inline

Member Function Documentation

execute()

bool sp_instr_error::execute ( THD *  thd, uint *  nextp  )

inlineoverridevirtual

Execute this instruction.

Parameters

	thd	Thread context
[out]	nextp	index of the next instruction to execute. (For most instructions this will be the instruction following this one). Note that this parameter is undefined in case of errors, use get_cont_dest() to find the continuation instruction for CONTINUE error handlers.

Returns

Error status.

Implements sp_instr.

get_psi_info()

PSI_statement_info * sp_instr_error::get_psi_info ( )

inlineoverridevirtual

Implements sp_instr.

opt_mark()

uint sp_instr_error::opt_mark ( sp_head *  , List< sp_instr > *  leads  )

inlineoverridevirtual

Mark this instruction as reachable during optimization and return the index to the next instruction.

Jump instruction will add their destination to the leads list.

Reimplemented from sp_instr.

print()

void sp_instr_error::print ( const THD *  thd, String *  str  )

overridevirtual

Implements sp_printable.

Member Data Documentation

m_errcode

int sp_instr_error::m_errcode

private

The error code, which should be raised by this instruction.

psi_info

PSI_statement_info sp_instr_error::psi_info

static

Initial value:

= {
    0, "error", PSI_FLAG_DISABLED | PSI_FLAG_UNTIMED,
    "Stored Program: CASE WHEN not found microcode instruction"}

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

• sql/sp_instr.h
• sql/sp_instr.cc