Skip navigation links

MySQL Newsletter - Subscribe Today!

The world's most popular open source database

MySQL 5.1: Item_str_func Class Reference

Item_str_func Class Reference

#include <item_strfunc.h>

Inheritance diagram for Item_str_func:

Inheritance graph
[legend]
Collaboration diagram for Item_str_func:

Collaboration graph
[legend]
List of all members.

Public Member Functions

 Item_str_func ()
 Item_str_func (Item *a)
 Item_str_func (Item *a, Item *b)
 Item_str_func (Item *a, Item *b, Item *c)
 Item_str_func (Item *a, Item *b, Item *c, Item *d)
 Item_str_func (Item *a, Item *b, Item *c, Item *d, Item *e)
 Item_str_func (List< Item > &list)
longlong val_int ()
double val_real ()
my_decimal * val_decimal (my_decimal *)
enum Item_result result_type () const
void left_right_max_length ()
String * check_well_formed_result (String *str)

Detailed Description

Definition at line 24 of file item_strfunc.h.

Constructor & Destructor Documentation

Item_str_func::Item_str_func (  )  [inline]

Definition at line 27 of file item_strfunc.h.

References Item::decimals, and NOT_FIXED_DEC.

00027 :Item_func() { decimals=NOT_FIXED_DEC; }

Item_str_func::Item_str_func ( Item *  a  )  [inline]

Definition at line 28 of file item_strfunc.h.

References Item::decimals, and NOT_FIXED_DEC.

00028 :Item_func(a) {decimals=NOT_FIXED_DEC; }

Item_str_func::Item_str_func ( Item *  a,
Item *  b 
) [inline]

Definition at line 29 of file item_strfunc.h.

References Item::decimals, and NOT_FIXED_DEC.

00029 :Item_func(a,b) { decimals=NOT_FIXED_DEC; }

Item_str_func::Item_str_func ( Item *  a,
Item *  b,
Item *  c 
) [inline]

Definition at line 30 of file item_strfunc.h.

References Item::decimals, and NOT_FIXED_DEC.

00030 :Item_func(a,b,c) { decimals=NOT_FIXED_DEC; }

Item_str_func::Item_str_func ( Item *  a,
Item *  b,
Item *  c,
Item *  d 
) [inline]

Definition at line 31 of file item_strfunc.h.

References Item::decimals, and NOT_FIXED_DEC.

00031 :Item_func(a,b,c,d) {decimals=NOT_FIXED_DEC; }

Item_str_func::Item_str_func ( Item *  a,
Item *  b,
Item *  c,
Item *  d,
Item *  e 
) [inline]

Definition at line 32 of file item_strfunc.h.

References Item::decimals, and NOT_FIXED_DEC.

00032 :Item_func(a,b,c,d,e) {decimals=NOT_FIXED_DEC; }

Item_str_func::Item_str_func ( List< Item > &  list  )  [inline]

Definition at line 33 of file item_strfunc.h.

References Item::decimals, and NOT_FIXED_DEC.

00033 :Item_func(list) {decimals=NOT_FIXED_DEC; }

Member Function Documentation

String * Item_str_func::check_well_formed_result ( String *  str  ) 

Definition at line 51 of file item_strfunc.cc.

References String::charset(), charset_info_st::cset, charset_info_st::csname, current_thd, ER, ER_INVALID_CHARACTER_STRING, String::length(), MODE_STRICT_ALL_TABLES, MODE_STRICT_TRANS_TABLES, Item::null_value, octet2hex(), String::ptr(), push_warning_printf(), set_if_smaller, MYSQL_ERROR::WARN_LEVEL_ERROR, MYSQL_ERROR::WARN_LEVEL_WARN, and my_charset_handler_st::well_formed_len.

Referenced by Item_func_conv_charset::val_str(), and Item_func_char::val_str().

00052 {
00053   /* Check whether we got a well-formed string */
00054   CHARSET_INFO *cs= str->charset();
00055   int well_formed_error;
00056   uint wlen= cs->cset->well_formed_len(cs,
00057                                        str->ptr(), str->ptr() + str->length(),
00058                                        str->length(), &well_formed_error);
00059   if (wlen < str->length())
00060   {
00061     THD *thd= current_thd;
00062     char hexbuf[7];
00063     enum MYSQL_ERROR::enum_warning_level level;
00064     uint diff= str->length() - wlen;
00065     set_if_smaller(diff, 3);
00066     octet2hex(hexbuf, str->ptr() + wlen, diff);
00067     if (thd->variables.sql_mode &
00068         (MODE_STRICT_TRANS_TABLES | MODE_STRICT_ALL_TABLES))
00069     {
00070       level= MYSQL_ERROR::WARN_LEVEL_ERROR;
00071       null_value= 1;
00072       str= 0;
00073     }
00074     else
00075       level= MYSQL_ERROR::WARN_LEVEL_WARN;
00076     push_warning_printf(thd, level, ER_INVALID_CHARACTER_STRING,
00077                         ER(ER_INVALID_CHARACTER_STRING), cs->csname, hexbuf);
00078   }
00079   return str;
00080 }

Here is the call graph for this function:

Here is the caller graph for this function:

void Item_str_func::left_right_max_length (  ) 

Definition at line 1057 of file item_strfunc.cc.

References Item_func::args, DTCollation::collation, Item::collation, Item_func::const_item(), int(), Item::max_length, charset_info_st::mbmaxlen, set_if_smaller, and val_int().

Referenced by Item_func_right::fix_length_and_dec(), and Item_func_left::fix_length_and_dec().

01058 {
01059   max_length=args[0]->max_length;
01060   if (args[1]->const_item())
01061   {
01062     int length=(int) args[1]->val_int()*collation.collation->mbmaxlen;
01063     if (length <= 0)
01064       max_length=0;
01065     else
01066       set_if_smaller(max_length,(uint) length);
01067   }
01068 }

Here is the call graph for this function:

Here is the caller graph for this function:

enum Item_result Item_str_func::result_type (  )  const [inline, virtual]

Reimplemented from Item.

Reimplemented in Item_func_now, and Item_nodeset_func.

Definition at line 37 of file item_strfunc.h.

References STRING_RESULT.

Referenced by Item_func_hex::val_str(), Item_func_format::val_str(), and Item_func_des_encrypt::val_str().

00037 { return STRING_RESULT; }

Here is the caller graph for this function:

my_decimal * Item_str_func::val_decimal ( my_decimal *   )  [virtual]

Reimplemented from Item_func.

Definition at line 83 of file item_strfunc.cc.

References String::charset(), DBUG_ASSERT, E_DEC_FATAL_ERROR, Item::fixed, String::length(), my_charset_bin, String::ptr(), str2my_decimal(), and Item::val_str().

00084 {
00085   DBUG_ASSERT(fixed == 1);
00086   char buff[64];
00087   String *res, tmp(buff,sizeof(buff), &my_charset_bin);
00088   res= val_str(&tmp);
00089   if (!res)
00090     return 0;
00091   (void)str2my_decimal(E_DEC_FATAL_ERROR, (char*) res->ptr(),
00092                        res->length(), res->charset(), decimal_value);
00093   return decimal_value;
00094 }

Here is the call graph for this function:

longlong Item_str_func::val_int (  )  [virtual]

Implements Item.

Reimplemented in Item_func_elt, Item_func_now, Item_func_sysdate_local, Item_func_from_unixtime, Item_func_convert_tz, Item_func_sec_to_time, Item_date_add_interval, Item_date_typecast, Item_time_typecast, Item_datetime_typecast, and Item_func_makedate.

Definition at line 109 of file item_strfunc.cc.

References String::charset(), DBUG_ASSERT, err, Item::fixed, String::length(), my_charset_bin, my_strntoll, NULL, String::ptr(), and Item::val_str().

Referenced by Item_func_lpad::fix_length_and_dec(), Item_func_rpad::fix_length_and_dec(), Item_func_repeat::fix_length_and_dec(), Item_func_substr::fix_length_and_dec(), left_right_max_length(), Item_func_maketime::val_str(), Item_func_inet_ntoa::val_str(), Item_func_export_set::val_str(), Item_func_hex::val_str(), Item_func_conv::val_str(), Item_func_lpad::val_str(), Item_func_rpad::val_str(), Item_func_repeat::val_str(), Item_func_char::val_str(), Item_func_substr_index::val_str(), Item_func_substr::val_str(), Item_func_right::val_str(), Item_func_left::val_str(), Item_func_insert::val_str(), and Item_func_des_encrypt::val_str().

00110 {
00111   DBUG_ASSERT(fixed == 1);
00112   int err;
00113   char buff[22];
00114   String *res, tmp(buff,sizeof(buff), &my_charset_bin);
00115   res= val_str(&tmp);
00116   return (res ?
00117           my_strntoll(res->charset(), res->ptr(), res->length(), 10, NULL,
00118                       &err) :
00119           (longlong) 0);
00120 }

Here is the call graph for this function:

Here is the caller graph for this function:

double Item_str_func::val_real (  )  [virtual]

Implements Item.

Reimplemented in Item_func_elt, Item_func_now, Item_func_sysdate_local, Item_func_from_unixtime, Item_func_convert_tz, Item_func_sec_to_time, and Item_date_add_interval.

Definition at line 97 of file item_strfunc.cc.

References String::charset(), DBUG_ASSERT, Item::fixed, String::length(), my_charset_bin, my_strntod, String::ptr(), and Item::val_str().

00098 {
00099   DBUG_ASSERT(fixed == 1);
00100   int err_not_used;
00101   char *end_not_used, buff[64];
00102   String *res, tmp(buff,sizeof(buff), &my_charset_bin);
00103   res= val_str(&tmp);
00104   return res ? my_strntod(res->charset(), (char*) res->ptr(), res->length(),
00105                           &end_not_used, &err_not_used) : 0.0;
00106 }

Here is the call graph for this function:

The documentation for this class was generated from the following files:
Generated on Sat Sep 9 21:54:29 2006 for MySQL 5.1 by  doxygen 1.4.7