MySQL 5.1: Item_date_typecast Class Reference

Item_date_typecast Class Reference

#include <item_timefunc.h>

Inheritance diagram for Item_date_typecast:

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Public Member Functions
	Item_date_typecast (Item *a)
const char *	func_name () const
String *	val_str (String *str)
bool	get_date (TIME *ltime, uint fuzzy_date)
const char *	cast_type () const
enum_field_types	field_type () const
Field *	tmp_table_field (TABLE *table)
void	fix_length_and_dec ()
bool	result_as_longlong ()
longlong	val_int ()

Detailed Description

Definition at line 756 of file item_timefunc.h.

Constructor & Destructor Documentation

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

Definition at line 759 of file item_timefunc.h.

00759 :Item_typecast_maybe_null(a) {}

Member Function Documentation

const char* Item_date_typecast::cast_type ( ) const [inline, virtual]

Implements Item_typecast.

Definition at line 763 of file item_timefunc.h.

00763 { return "date"; }

enum_field_types Item_date_typecast::field_type ( ) const [inline, virtual]

Reimplemented from Item.

Definition at line 764 of file item_timefunc.h.

References MYSQL_TYPE_DATE.

00764 { return MYSQL_TYPE_DATE; }

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

Reimplemented from Item_typecast_maybe_null.

Definition at line 769 of file item_timefunc.h.

References Item::collation, Item::max_length, Item::maybe_null, my_charset_bin, and DTCollation::set().

00770   {
00771     collation.set(&my_charset_bin);
00772     max_length= 10;
00773     maybe_null= 1;
00774   }

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

Implements Item_func.

Definition at line 760 of file item_timefunc.h.

00760 { return "cast_as_date"; }

bool Item_date_typecast::get_date	(	TIME *	ltime,
		uint	fuzzy_date
	)			`[virtual]`

Reimplemented from Item.

Definition at line 2414 of file item_timefunc.cc.

References Item_func::get_arg0_date(), st_mysql_time::hour, st_mysql_time::minute, MYSQL_TIMESTAMP_DATE, st_mysql_time::second, st_mysql_time::second_part, TIME_FUZZY_DATE, and st_mysql_time::time_type.

Referenced by val_int().

02415 {
02416   bool res= get_arg0_date(ltime, TIME_FUZZY_DATE);
02417   ltime->hour= ltime->minute= ltime->second= ltime->second_part= 0;
02418   ltime->time_type= MYSQL_TIMESTAMP_DATE;
02419   return res;
02420 }

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bool Item_date_typecast::result_as_longlong ( ) [inline, virtual]

Reimplemented from Item.

Definition at line 775 of file item_timefunc.h.

References TRUE.

00775 { return TRUE; }

Field* Item_date_typecast::tmp_table_field ( TABLE * table ) [inline, virtual]

Reimplemented from Item_func.

Definition at line 765 of file item_timefunc.h.

References Item::tmp_table_field_from_field_type().

00766   {
00767     return tmp_table_field_from_field_type(table, 0);
00768   }

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longlong Item_date_typecast::val_int ( ) [virtual]

Reimplemented from Item_str_func.

Definition at line 2438 of file item_timefunc.cc.

References Item_func::args, st_mysql_time::day, DBUG_ASSERT, Item::fixed, get_date(), st_mysql_time::month, TIME_FUZZY_DATE, and st_mysql_time::year.

02439 {
02440   DBUG_ASSERT(fixed == 1);
02441   TIME ltime;
02442   if (args[0]->get_date(&ltime, TIME_FUZZY_DATE))
02443     return 0;
02444   return (longlong) (ltime.year * 10000L + ltime.month * 100 + ltime.day);
02445 }

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String * Item_date_typecast::val_str ( String * str ) [virtual]

Reimplemented from Item_typecast.

Definition at line 2423 of file item_timefunc.cc.

References String::alloc(), DBUG_ASSERT, Item::fixed, Item_func::get_arg0_date(), make_date(), Item::null_value, and TIME_FUZZY_DATE.

02424 {
02425   DBUG_ASSERT(fixed == 1);
02426   TIME ltime;
02427 
02428   if (!get_arg0_date(&ltime, TIME_FUZZY_DATE) && !str->alloc(11))
02429   {
02430     make_date((DATE_TIME_FORMAT *) 0, &ltime, str);
02431     return str;
02432   }
02433 
02434   null_value=1;
02435   return 0;
02436 }

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

mysql/src/5.1-dbg/sql/item_timefunc.h
mysql/src/5.1-dbg/sql/item_timefunc.cc

Generated on Sat Sep 9 21:21:48 2006 for MySQL 5.1 by

1.4.7

Item_date_typecast Class Reference

Public Member Functions

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation