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MySQL 5.1: Item_func_sysconst Class Reference

Item_func_sysconst Class Reference

#include <item_strfunc.h>

Inheritance diagram for Item_func_sysconst:

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List of all members.

Public Member Functions

 Item_func_sysconst ()
Item * safe_charset_converter (CHARSET_INFO *tocs)
virtual const char * fully_qualified_func_name () const =0

Detailed Description

Definition at line 369 of file item_strfunc.h.

Constructor & Destructor Documentation

Item_func_sysconst::Item_func_sysconst (  )  [inline]

Definition at line 372 of file item_strfunc.h.

References Item::collation, DERIVATION_SYSCONST, DTCollation::set(), and system_charset_info.

00373   { collation.set(system_charset_info,DERIVATION_SYSCONST); }

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Member Function Documentation

virtual const char* Item_func_sysconst::fully_qualified_func_name (  )  const [pure virtual]

Implemented in Item_func_database, Item_func_user, and Item_func_current_user.

Referenced by safe_charset_converter().

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Item * Item_func_sysconst::safe_charset_converter ( CHARSET_INFO *  tocs  )  [virtual]

Reimplemented from Item.

Definition at line 1659 of file item_strfunc.cc.

References String::charset(), Item::collation, String::copy(), DTCollation::derivation, fully_qualified_func_name(), String::length(), String::mark_as_const(), NULL, String::ptr(), safe_charset_converter(), Item::str_value, and Item::val_str().

Referenced by safe_charset_converter().

01660 {
01661   Item_string *conv;
01662   uint conv_errors;
01663   String tmp, cstr, *ostr= val_str(&tmp);
01664   cstr.copy(ostr->ptr(), ostr->length(), ostr->charset(), tocs, &conv_errors);
01665   if (conv_errors ||
01666       !(conv= new Item_static_string_func(fully_qualified_func_name(),
01667                                           cstr.ptr(), cstr.length(),
01668                                           cstr.charset(),
01669                                           collation.derivation)))
01670   {
01671     return NULL;
01672   }
01673   conv->str_value.copy();
01674   conv->str_value.mark_as_const();
01675   return conv;
01676 }

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The documentation for this class was generated from the following files:
Generated on Sat Sep 9 21:44:45 2006 for MySQL 5.1 by  doxygen 1.4.7