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MySQL 5.1: Item_func_charset Class Reference

Item_func_charset Class Reference

#include <item_strfunc.h>

Inheritance diagram for Item_func_charset:

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Collaboration diagram for Item_func_charset:

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List of all members.

Public Member Functions

 Item_func_charset (Item *a)
String * val_str (String *)
const char * func_name () const
void fix_length_and_dec ()
table_map not_null_tables () const
bool check_partition_func_processor (byte *bool_arg)

Detailed Description

Definition at line 758 of file item_strfunc.h.

Constructor & Destructor Documentation

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

Definition at line 761 of file item_strfunc.h.

00761 :Item_str_func(a) {}

Member Function Documentation

bool Item_func_charset::check_partition_func_processor ( byte *  bool_arg  )  [inline, virtual]

Reimplemented from Item.

Definition at line 771 of file item_strfunc.h.

00771 { return 0;}

void Item_func_charset::fix_length_and_dec (  )  [inline, virtual]

Implements Item_result_field.

Definition at line 764 of file item_strfunc.h.

References DTCollation::collation, Item::collation, Item::max_length, Item::maybe_null, charset_info_st::mbmaxlen, DTCollation::set(), and system_charset_info.

00765   {
00766      collation.set(system_charset_info);
00767      max_length= 64 * collation.collation->mbmaxlen; // should be enough
00768      maybe_null= 0;
00769   };

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const char* Item_func_charset::func_name (  )  const [inline, virtual]

Implements Item_func.

Definition at line 763 of file item_strfunc.h.

00763 { return "charset"; }

table_map Item_func_charset::not_null_tables (  )  const [inline, virtual]

Reimplemented from Item_func.

Definition at line 770 of file item_strfunc.h.

00770 { return 0; }

String * Item_func_charset::val_str ( String *   )  [virtual]

Implements Item.

Definition at line 2482 of file item_strfunc.cc.

References Item_func::args, DTCollation::collation, Item::collation, String::copy(), charset_info_st::csname, DBUG_ASSERT, Item::fixed, my_charset_latin1, Item::null_value, and strlen().

02483 {
02484   DBUG_ASSERT(fixed == 1);
02485   uint dummy_errors;
02486 
02487   CHARSET_INFO *cs= args[0]->collation.collation; 
02488   null_value= 0;
02489   str->copy(cs->csname, strlen(cs->csname),
02490             &my_charset_latin1, collation.collation, &dummy_errors);
02491   return str;
02492 }

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The documentation for this class was generated from the following files:
Generated on Sat Sep 9 21:27:14 2006 for MySQL 5.1 by  doxygen 1.4.7