Item_copy_string Class Reference

#include <item.h>

Inheritance diagram for Item_copy_string:

List of all members.

Public Member Functions
	Item_copy_string (Item *item)
String *	val_str (String *)
my_decimal *	val_decimal (my_decimal *)
double	val_real ()
longlong	val_int ()
bool	get_date (MYSQL_TIME *ltime, uint fuzzydate)
bool	get_time (MYSQL_TIME *ltime)
void	copy ()
type_conversion_status	save_in_field (Field *field, bool no_conversions)

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Detailed Description

Implementation of a string cache.

Uses Item::str_value for storage

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Member Function Documentation

void Item_copy_string::copy

(

)

[virtual]

Update the cache with the value of the original item

This is the method that updates the cached value. It must be explicitly called by the user of this class to store the value of the orginal item in the cache.

Implements Item_copy.

type_conversion_status Item_copy_string::save_in_field	(	Field *	field,
		bool	no_conversions
	)		[virtual]

Save a temporal value in packed longlong format into a Field. Used in optimizer.

Parameters:

OUT	field The field to set the value to.

Return values:

0	On success.
>0	In error.

Implements Item_copy.

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The documentation for this class was generated from the following files:

• item.h
• item.cc