MySQL 5.1: Item_user_var_as_out_param Class Reference

Item_user_var_as_out_param Class Reference

#include <item_func.h>

Inheritance diagram for Item_user_var_as_out_param:

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Public Member Functions
	Item_user_var_as_out_param (LEX_STRING a)
enum Type	type () const
double	val_real ()
longlong	val_int ()
String *	val_str (String *str)
my_decimal *	val_decimal (my_decimal *decimal_buffer)
bool	fix_fields (THD thd, Item *ref)
void	print (String *str)
void	set_null_value (CHARSET_INFO *cs)
void	set_value (const char str, uint length, CHARSET_INFO cs)
Private Attributes
LEX_STRING	name
user_var_entry *	entry

Detailed Description

Definition at line 1265 of file item_func.h.

Constructor & Destructor Documentation

Item_user_var_as_out_param::Item_user_var_as_out_param ( LEX_STRING a ) [inline]

Definition at line 1270 of file item_func.h.

01270 : name(a) {}

Member Function Documentation

bool Item_user_var_as_out_param::fix_fields	(	THD *	thd,
		Item **	ref
	)			`[virtual]`

Reimplemented from Item.

Definition at line 4172 of file item_func.cc.

References DBUG_ASSERT, FALSE, Item::fix_fields(), Item::fixed, get_variable(), name, STRING_RESULT, and TRUE.

04173 {
04174   DBUG_ASSERT(fixed == 0);
04175   if (Item::fix_fields(thd, ref) ||
04176       !(entry= get_variable(&thd->user_vars, name, 1)))
04177     return TRUE;
04178   entry->type= STRING_RESULT;
04179   /*
04180     Let us set the same collation which is used for loading
04181     of fields in LOAD DATA INFILE.
04182     (Since Item_user_var_as_out_param is used only there).
04183   */
04184   entry->collation.set(thd->variables.collation_database);
04185   entry->update_query_id= thd->query_id;
04186   return FALSE;
04187 }

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

Reimplemented from Item.

Definition at line 4235 of file item_func.cc.

References String::append(), LEX_STRING::length, name, and LEX_STRING::str.

04236 {
04237   str->append('@');
04238   str->append(name.str,name.length);
04239 }

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void Item_user_var_as_out_param::set_null_value ( CHARSET_INFO * cs )

Definition at line 4190 of file item_func.cc.

References current_thd, DERIVATION_IMPLICIT, STRING_RESULT, TRUE, and update_hash().

04191 {
04192   if (::update_hash(entry, TRUE, 0, 0, STRING_RESULT, cs,
04193                     DERIVATION_IMPLICIT, 0 /* unsigned_arg */))
04194     current_thd->fatal_error();                 // Probably end of memory
04195 }

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void Item_user_var_as_out_param::set_value	(	const char *	str,
		uint	length,
		CHARSET_INFO *	cs
	)

Definition at line 4198 of file item_func.cc.

References current_thd, DERIVATION_IMPLICIT, FALSE, STRING_RESULT, and update_hash().

04200 {
04201   if (::update_hash(entry, FALSE, (void*)str, length, STRING_RESULT, cs,
04202                     DERIVATION_IMPLICIT, 0 /* unsigned_arg */))
04203     current_thd->fatal_error();                 // Probably end of memory
04204 }

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enum Type Item_user_var_as_out_param::type ( ) const [inline, virtual]

Implements Item.

Definition at line 1272 of file item_func.h.

References Item::STRING_ITEM.

01272 { return STRING_ITEM;}

my_decimal * Item_user_var_as_out_param::val_decimal ( my_decimal * decimal_buffer ) [virtual]

Implements Item.

Definition at line 4228 of file item_func.cc.

References DBUG_ASSERT.

04229 {
04230   DBUG_ASSERT(0);
04231   return 0;
04232 }

longlong Item_user_var_as_out_param::val_int ( ) [virtual]

Implements Item.

Definition at line 4214 of file item_func.cc.

References DBUG_ASSERT.

04215 {
04216   DBUG_ASSERT(0);
04217   return 0;
04218 }

double Item_user_var_as_out_param::val_real ( ) [virtual]

Implements Item.

Definition at line 4207 of file item_func.cc.

References DBUG_ASSERT.

04208 {
04209   DBUG_ASSERT(0);
04210   return 0.0;
04211 }

String * Item_user_var_as_out_param::val_str ( String * str ) [virtual]

Implements Item.

Definition at line 4221 of file item_func.cc.

References DBUG_ASSERT.

04222 {
04223   DBUG_ASSERT(0);
04224   return 0;
04225 }

Member Data Documentation

user_var_entry* Item_user_var_as_out_param::entry [private]

Definition at line 1268 of file item_func.h.

LEX_STRING Item_user_var_as_out_param::name [private]

Reimplemented from Item.

Definition at line 1267 of file item_func.h.

Referenced by fix_fields(), and print().

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

mysql/src/5.1-dbg/sql/item_func.h
mysql/src/5.1-dbg/sql/item_func.cc

Generated on Sat Sep 9 21:59:03 2006 for MySQL 5.1 by

1.4.7

Item_user_var_as_out_param Class Reference

Public Member Functions

Private Attributes

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation