sp_instr_error Class Reference

#include <sp_instr.h>

Inheritance diagram for sp_instr_error:

Collaboration diagram for sp_instr_error:

Public Member Functions
	sp_instr_error (uint ip, sp_pcontext *ctx, int errcode)
virtual void	print (String *str)
virtual bool	execute (THD *thd, uint *nextp)
virtual uint	opt_mark (sp_head *sp, List< sp_instr > *leads)
Public Member Functions inherited from sp_instr
	sp_instr (uint ip, sp_pcontext *ctx)
uint	get_ip () const
virtual uint	get_cont_dest () const
sp_pcontext *	get_parsing_ctx () const
virtual uint	opt_shortcut_jump (sp_head *sp, sp_instr *start)
virtual void	opt_move (uint dst, List< sp_branch_instr > *ibp)
bool	opt_is_marked () const

Additional Inherited Members
Static Public Member Functions inherited from Sql_alloc
static void *	operator new (size_t size) throw ()
static void *	operator new[] (size_t size) throw ()
static void *	operator new[] (size_t size, MEM_ROOT *mem_root) throw ()
static void *	operator new (size_t size, MEM_ROOT *mem_root) throw ()
static void	operator delete (void *ptr, size_t size)
static void	operator delete (void *ptr, MEM_ROOT *mem_root)
static void	operator delete[] (void *ptr, MEM_ROOT *mem_root)
static void	operator delete[] (void *ptr, size_t size)
Protected Attributes inherited from sp_instr
bool	m_marked
uint	m_ip
	Instruction pointer.
sp_pcontext *	m_parsing_ctx
	Instruction parsing context.

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.

Definition at line 1398 of file sp_instr.h.

Member Function Documentation

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

inlinevirtual

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.

Definition at line 1416 of file sp_instr.h.

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

inlinevirtual

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.

Definition at line 1423 of file sp_instr.h.

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

• sql/sp_instr.h
• sql/sp_instr.cc