1berry/MariaDB-server
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

removed 'this' pointer from initialization list of constructors

Browse Source
This commit is contained in:
bell@sanja.is.com.ua 2002-10-08 23:49:59 +03:00
parent 226535865b
commit 40c0fd1c6c
2 changed files with 27 additions and 13 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

29
sql/item_subselect.cc
View File

@ -32,11 +32,22 @@ SUBSELECT TODO:
#include "mysql_priv.h"
#include "sql_select.h"
Item_subselect::Item_subselect(THD *thd, st_select_lex *select_lex,
select_subselect *result):
Item_subselect::Item_subselect():
Item(), engine_owner(1), value_assigned(0)
{
DBUG_ENTER("Item_subselect::Item_subselect");
assign_null();
/*
item value is NULL if select_subselect not changed this value
(i.e. some rows will be found returned)
*/
null_value= 1;
}
void Item_subselect::init(THD *thd, st_select_lex *select_lex,
select_subselect *result)
{
DBUG_ENTER("Item_subselect::init");
DBUG_PRINT("subs", ("select_lex 0x%xl", (long) select_lex));
if (select_lex->next_select())
@ -45,12 +56,6 @@ Item_subselect::Item_subselect(THD *thd, st_select_lex *select_lex,
else
engine= new subselect_single_select_engine(thd, select_lex, result,
this);
assign_null();
/*
item value is NULL if select_subselect not changed this value
(i.e. some rows will be found returned)
*/
null_value= 1;
DBUG_VOID_RETURN;
}
@ -100,8 +105,9 @@ inline table_map Item_subselect::used_tables() const
Item_singleval_subselect::Item_singleval_subselect(THD *thd,
st_select_lex *select_lex):
Item_subselect(thd, select_lex, new select_singleval_subselect(this))
Item_subselect()
{
init(thd, select_lex, new select_singleval_subselect(this));
max_columns= 1;
maybe_null= 1;
}
@ -149,8 +155,9 @@ String *Item_singleval_subselect::val_str (String *str)
Item_exists_subselect::Item_exists_subselect(THD *thd,
st_select_lex *select_lex):
Item_subselect(thd, select_lex, new select_exists_subselect(this))
Item_subselect()
{
init(thd, select_lex, new select_exists_subselect(this));
max_columns= UINT_MAX;
null_value= 0; //can't be NULL
maybe_null= 0; //can't be NULL

11
sql/item_subselect.h
View File

@ -39,8 +39,7 @@ protected:
uint max_columns;
public:
Item_subselect(THD *thd, st_select_lex *select_lex,
select_subselect* result);
Item_subselect();
Item_subselect(Item_subselect *item)
{
null_value= item->null_value;
@ -50,6 +49,14 @@ public:
engine_owner= 0;
name= item->name;
}
/*
We need this method, because some compilers do not allow 'this'
pointer in constructor initialization list, but we need pass pointer
to subselect Item class to select_subselect classes constructor.
*/
void init (THD *thd, st_select_lex *select_lex, select_subselect *result);
~Item_subselect();
virtual void assign_null()
{