Inheritance diagram for Field_enum:

Public Member Functions
	Field_enum (uchar ptr_arg, uint32 len_arg, uchar null_ptr_arg, uchar null_bit_arg, enum utype unireg_check_arg, const char field_name_arg, uint packlength_arg, TYPELIB typelib_arg, const CHARSET_INFO *charset_arg)
Field *	new_field (MEM_ROOT root, TABLE new_table, bool keep_type)
enum_field_types	type () const
bool	match_collation_to_optimize_range () const
enum Item_result	cmp_type () const
enum Item_result	cast_to_int_type () const
enum ha_base_keytype	key_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)
double	val_real (void)
my_decimal *	val_decimal (my_decimal *decimal_value)
longlong	val_int (void)
String *	val_str (String , String )
int	cmp (const uchar , const uchar )
void	make_sort_key (uchar *buff, uint length)
uint32	pack_length () const
void	store_type (ulonglong value)
void	sql_type (String &str) const
enum_field_types	real_type () const
uint	pack_length_from_metadata (uint field_metadata)
uint	row_pack_length () const
virtual bool	zero_pack () const
bool	optimize_range (uint idx, uint part)
bool	eq_def (Field *field)
bool	has_charset (void) const
CHARSET_INFO *	sort_charset (void) const
Field_enum *	clone (MEM_ROOT *mem_root) const
Field_enum *	clone () const
virtual uchar *	pack (uchar to, const uchar from, uint max_length, bool low_byte_first)
virtual const uchar *	unpack (uchar to, const uchar from, uint param_data, bool low_byte_first)
Public Attributes
TYPELIB *	typelib
Protected Attributes
uint	packlength

Member Function Documentation

Field_enum* Field_enum::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.

Implements Field.

Reimplemented in Field_set.

Field_enum* Field_enum::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.

Implements Field.

Reimplemented in Field_set.

bool Field_enum::eq_def ( Field * field ) [virtual]

Returns:: returns 1 if the fields are equally defined

Reimplemented from Field.

void Field_enum::make_sort_key	(	uchar *	buff,
		uint	length
	)		`[virtual]`

Writes a copy of the current value in the record buffer, suitable for sorting using byte-by-byte comparison. Integers are always in big-endian regardless of hardware architecture. At most length bytes are written into the buffer.

Parameters:

buff	The buffer, assumed to be at least length bytes.
length	Number of bytes to write.

Implements Field.

uchar * Field_enum::pack	(	uchar *	to,
		const uchar *	from,
		uint	max_length,
		bool	low_byte_first
	)		`[virtual]`

This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.

Reimplemented from Field.

type_conversion_status Field_enum::store	(	const char *	from,
		uint	length,
		const CHARSET_INFO *	cs
	)		`[virtual]`

Note:: Storing a empty string in a enum field gives a warning (if there isn't a empty value in the enum)

Implements Field_str.

Reimplemented in Field_set.

type_conversion_status Field_enum::store ( double nr ) [virtual]

Store double value in Field_string or Field_varstring.

Pretty prints double number into field_length characters buffer.

Parameters:

nr number

Reimplemented from Field_str.

Reimplemented in Field_set.

const uchar * Field_enum::unpack	(	uchar *	to,
		const uchar *	from,
		uint	param_data,
		bool	low_byte_first
	)		`[virtual]`

This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.

Reimplemented from Field.

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

Public Member Functions

Public Attributes

Protected Attributes

Member Function Documentation