Field_year Class Reference

Inheritance diagram for Field_year:

List of all members.

Public Member Functions
	Field_year (uchar *ptr_arg, uint32 len_arg, uchar *null_ptr_arg, uchar null_bit_arg, enum utype unireg_check_arg, const char *field_name_arg)
enum_field_types	type () const
type_conversion_status	store (const char *to, uint length, const CHARSET_INFO *charset)
type_conversion_status	store (double nr)
type_conversion_status	store (longlong nr, bool unsigned_val)
type_conversion_status	store_time (MYSQL_TIME *ltime, uint8 dec)
double	val_real (void)
longlong	val_int (void)
String *	val_str (String *, String *)
bool	send_binary (Protocol *protocol)
void	sql_type (String &str) const
bool	can_be_compared_as_longlong () const
Field_year *	clone (MEM_ROOT *mem_root) const
Field_year *	clone () const

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Member Function Documentation

Field_year* Field_year::clone

(

MEM_ROOT *

mem_root

)

const [inline, virtual]

Makes a shallow copy of the Field object.

Note:

This member function must be overridden in all concrete subclasses. Several of the Field subclasses are concrete even though they are not leaf classes, so the compiler will not always catch this.

Parameters:

mem_root

MEM_ROOT to use for memory allocation.

Return values:

NULL	If memory allocation failed.

Reimplemented from Field_tiny.

Field_year* Field_year::clone

(

)

const [inline, virtual]

Makes a shallow copy of the Field object.

Note:

This member function must be overridden in all concrete subclasses. Several of the Field subclasses are concrete even though they are not leaf classes, so the compiler will not always catch this.

Return values:

NULL	If memory allocation failed.

Reimplemented from Field_tiny.

type_conversion_status Field_year::store_time	(	MYSQL_TIME *	ltime,
		uint8	dec_arg
	)		[virtual]

Store MYSQL_TIME value with the given amount of decimal digits into a field.

Note, the "dec" parameter represents number of digits of the Item that previously created the MYSQL_TIME value. It's needed when we store the value into a CHAR/VARCHAR/TEXT field to display the proper amount of fractional digits. For other field types the "dec" value does not matter and is ignored.

Parameters:

ltime	Time, date or datetime value.
dec	Number of decimals in ltime.

Return values:

false	on success
true	on error

This is called when storing a date in a string.

Note:

Needs to be changed if/when we want to support different time formats.

Reimplemented from Field_num.

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

• field.h
• field.cc