@ -49,29 +49,50 @@ class DTCollation {
public :
CHARSET_INFO * collation ;
enum Derivation derivation ;
uint repertoire ;
void set_repertoire_from_charset ( CHARSET_INFO * cs )
{
repertoire = cs - > state & MY_CS_PUREASCII ?
MY_REPERTOIRE_ASCII : MY_REPERTOIRE_UNICODE30 ;
}
DTCollation ( )
{
collation = & my_charset_bin ;
derivation = DERIVATION_NONE ;
repertoire = MY_REPERTOIRE_UNICODE30 ;
}
DTCollation ( CHARSET_INFO * collation_arg , Derivation derivation_arg )
{
collation = collation_arg ;
derivation = derivation_arg ;
set_repertoire_from_charset ( collation_arg ) ;
}
void set ( DTCollation & dt )
{
collation = dt . collation ;
derivation = dt . derivation ;
repertoire = dt . repertoire ;
}
void set ( CHARSET_INFO * collation_arg , Derivation derivation_arg )
{
collation = collation_arg ;
derivation = derivation_arg ;
set_repertoire_from_charset ( collation_arg ) ;
}
void set ( CHARSET_INFO * collation_arg ,
Derivation derivation_arg ,
uint repertoire_arg )
{
collation = collation_arg ;
derivation = derivation_arg ;
repertoire = repertoire_arg ;
}
void set ( CHARSET_INFO * collation_arg )
{ collation = collation_arg ; }
{
collation = collation_arg ;
set_repertoire_from_charset ( collation_arg ) ;
}
void set ( Derivation derivation_arg )
{ derivation = derivation_arg ; }
bool aggregate ( DTCollation & dt , uint flags = 0 ) ;
@ -1672,10 +1693,11 @@ class Item_string :public Item
{
public :
Item_string ( const char * str , uint length ,
CHARSET_INFO * cs , Derivation dv = DERIVATION_COERCIBLE )
CHARSET_INFO * cs , Derivation dv = DERIVATION_COERCIBLE ,
uint repertoire = MY_REPERTOIRE_UNICODE30 )
{
collation . set ( cs , dv ) ;
str_value . set_or_copy_aligned ( str , length , cs ) ;
str_value . set_or_copy_aligned ( str , length , cs ) ;
collation . set ( cs , dv , repertoire ) ;
/*
We have to have a different max_length than ' length ' here to
ensure that we get the right length if we do use the item
@ -1699,10 +1721,11 @@ public:
fixed = 1 ;
}
Item_string ( const char * name_par , const char * str , uint length ,
CHARSET_INFO * cs , Derivation dv = DERIVATION_COERCIBLE )
CHARSET_INFO * cs , Derivation dv = DERIVATION_COERCIBLE ,
uint repertoire = MY_REPERTOIRE_UNICODE30 )
{
collation . set ( cs , dv ) ;
str_value . set_or_copy_aligned ( str , length , cs ) ;
str_value . set_or_copy_aligned ( str , length , cs ) ;
collation . set ( cs , dv , repertoire ) ;
max_length = str_value . numchars ( ) * cs - > mbmaxlen ;
set_name ( name_par , 0 , cs ) ;
decimals = NOT_FIXED_DEC ;
@ -1718,6 +1741,12 @@ public:
str_value . copy ( str_arg , length_arg , collation . collation ) ;
max_length = str_value . numchars ( ) * collation . collation - > mbmaxlen ;
}
void set_repertoire_from_value ( )
{
collation . repertoire = my_string_repertoire ( str_value . charset ( ) ,
str_value . ptr ( ) ,
str_value . length ( ) ) ;
}
enum Type type ( ) const { return STRING_ITEM ; }
double val_real ( ) ;
longlong val_int ( ) ;
unknown
19 years ago