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MySQL 5.1: sp_instr_cpush Class Reference

sp_instr_cpush Class Reference

#include <sp_head.h>

Inheritance diagram for sp_instr_cpush:

[legend]Collaboration diagram for sp_instr_cpush:

[legend]List of all members.


Public Member Functions
	sp_instr_cpush (uint ip, sp_pcontext ctx, LEX lex, uint offset)
virtual	~sp_instr_cpush ()
virtual int	execute (THD thd, uint nextp)
virtual void	print (String *str)
virtual void	cleanup_stmt ()
Private Member Functions
	sp_instr_cpush (const sp_instr_cpush &)
void	operator= (sp_instr_cpush &)
Private Attributes
sp_lex_keeper	m_lex_keeper
uint	m_cursor

Detailed Description

Definition at line 963 of file sp_head.h.

Constructor & Destructor Documentation

sp_instr_cpush::sp_instr_cpush ( const sp_instr_cpush & ) [private]

sp_instr_cpush::sp_instr_cpush	(	uint	ip,
		sp_pcontext *	ctx,
		LEX *	lex,
		uint	offset
	)			`[inline]`

Definition at line 970 of file sp_head.h.

00971     : sp_instr(ip, ctx), m_lex_keeper(lex, TRUE), m_cursor(offset)
00972   {}

virtual sp_instr_cpush::~sp_instr_cpush ( ) [inline, virtual]

Definition at line 974 of file sp_head.h.

00975   {}

Member Function Documentation

virtual void sp_instr_cpush::cleanup_stmt ( ) [inline, virtual]

Definition at line 986 of file sp_head.h.

00986 { /* no op */ }

int sp_instr_cpush::execute	(	THD *	thd,
		uint *	nextp
	)			`[virtual]`

Implements sp_instr.

Definition at line 2985 of file sp_head.cc.

References DBUG_ENTER, DBUG_RETURN, sp_instr::m_ip, and m_lex_keeper.

02986 {
02987   Query_arena backup_arena;
02988   DBUG_ENTER("sp_instr_cpush::execute");
02989 
02990   /*
02991     We should create cursors in the callers arena, as
02992     it could be (and usually is) used in several instructions.
02993   */
02994   thd->set_n_backup_active_arena(thd->spcont->callers_arena, &backup_arena);
02995 
02996   thd->spcont->push_cursor(&m_lex_keeper, this);
02997 
02998   thd->restore_active_arena(thd->spcont->callers_arena, &backup_arena);
02999 
03000   *nextp= m_ip+1;
03001 
03002   DBUG_RETURN(0);
03003 }

void sp_instr_cpush::operator= ( sp_instr_cpush & ) [private]

void sp_instr_cpush::print ( String * str ) [virtual]

Implements sp_instr.

Definition at line 3007 of file sp_head.cc.

References sp_pcontext::find_cursor(), sp_instr::m_ctx, m_cursor, n, String::qs_append(), String::reserve(), SP_INSTR_UINT_MAXLEN, and STRING_WITH_LEN.

03008 {
03009   LEX_STRING n;
03010   my_bool found= m_ctx->find_cursor(m_cursor, &n);
03011   /* cpush name@offset */
03012   uint rsrv= SP_INSTR_UINT_MAXLEN+7;
03013 
03014   if (found)
03015     rsrv+= n.length;
03016   if (str->reserve(rsrv))
03017     return;
03018   str->qs_append(STRING_WITH_LEN("cpush "));
03019   if (found)
03020   {
03021     str->qs_append(n.str, n.length);
03022     str->qs_append('@');
03023   }
03024   str->qs_append(m_cursor);
03025 }