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MySQL 5.1: store_key_const_item Class Reference

store_key_const_item Class Reference

#include <sql_select.h>

Inheritance diagram for store_key_const_item:

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Collaboration diagram for store_key_const_item:

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List of all members.

Public Member Functions

 store_key_const_item (THD *thd, Field *to_field_arg, char *ptr, char *null_ptr_arg, uint length, Item *item_arg)
enum store_key_result copy ()
const char * name () const

Private Attributes

bool inited

Detailed Description

Definition at line 545 of file sql_select.h.

Constructor & Destructor Documentation

store_key_const_item::store_key_const_item ( THD *  thd,
Field *  to_field_arg,
char *  ptr,
char *  null_ptr_arg,
uint  length,
Item *  item_arg 
) [inline]

Definition at line 549 of file sql_select.h.

00552     :store_key_item(thd, to_field_arg,ptr,
00553                     null_ptr_arg ? null_ptr_arg : item_arg->maybe_null ?
00554                     &err : NullS, length, item_arg), inited(0)
00555   {
00556   }

Member Function Documentation

enum store_key_result store_key_const_item::copy (  )  [inline, virtual]

Reimplemented from store_key_item.

Definition at line 557 of file sql_select.h.

References store_key::err, inited, store_key_item::item, Item::save_in_field(), store_key::STORE_KEY_FATAL, and store_key::to_field.

00558   {
00559     int res;
00560     if (!inited)
00561     {
00562       inited=1;
00563       if ((res= item->save_in_field(to_field, 1)))
00564       {       
00565         if (!err)
00566           err= res;
00567       }
00568     }
00569     return (err > 2 ?  STORE_KEY_FATAL : (store_key_result) err);
00570   }

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const char* store_key_const_item::name (  )  const [inline, virtual]

Reimplemented from store_key_item.

Definition at line 571 of file sql_select.h.

00571 { return "const"; }

Member Data Documentation

bool store_key_const_item::inited [private]

Definition at line 547 of file sql_select.h.

Referenced by copy().

The documentation for this class was generated from the following file:
Generated on Sat Sep 9 23:46:36 2006 for MySQL 5.1 by  doxygen 1.4.7