sp_instr_error Class Reference

#include <sp_instr.h>

Inheritance diagram for sp_instr_error:

List of all members.

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)

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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.

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Member Function Documentation

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

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.

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

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.

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

• sp_instr.h
• sp_instr.cc