Inheritance diagram for Field_num:

Collaboration diagram for Field_num:

Public Member Functions
	Field_num (uchar ptr_arg, uint32 len_arg, uchar null_ptr_arg, uchar null_bit_arg, utype unireg_check_arg, const char *field_name_arg, uint8 dec_arg, bool zero_arg, bool unsigned_arg)
Item_result	result_type () const
enum Derivation	derivation (void) const
uint	repertoire (void) const
const CHARSET_INFO *	charset (void) const
void	prepend_zeros (String *value)
void	add_zerofill_and_unsigned (String &res) const
uint	decimals () const
bool	eq_def (Field *field)
type_conversion_status	store_decimal (const my_decimal *)
type_conversion_status	store_time (MYSQL_TIME *ltime, uint8 dec)
my_decimal *	val_decimal (my_decimal *)
bool	get_date (MYSQL_TIME *ltime, uint fuzzydate)
bool	get_time (MYSQL_TIME *ltime)
uint	is_equal (Create_field *new_field)
uint	row_pack_length () const
uint32	pack_length_from_metadata (uint field_metadata)
type_conversion_status	check_int (const CHARSET_INFO cs, const char str, int length, const char *int_end, int error)
type_conversion_status	get_int (const CHARSET_INFO cs, const char from, uint len, longlong *rnd, ulonglong unsigned_max, longlong signed_min, longlong signed_max)
Public Member Functions inherited from Field
bool	has_insert_default_function () const
bool	has_update_default_function () const
	Field (uchar ptr_arg, uint32 length_arg, uchar null_ptr_arg, uchar null_bit_arg, utype unireg_check_arg, const char *field_name_arg)
	This is used as a table name when the table structure is not set up.
virtual type_conversion_status	store (const char to, uint length, const CHARSET_INFO cs)=0
virtual type_conversion_status	store (double nr)=0
virtual type_conversion_status	store (longlong nr, bool unsigned_val)=0
virtual type_conversion_status	store_packed (longlong nr)
type_conversion_status	store_time (MYSQL_TIME *ltime)
type_conversion_status	store (const char to, uint length, const CHARSET_INFO cs, enum_check_fields check_level)
virtual double	val_real (void)=0
virtual longlong	val_int (void)=0
virtual longlong	val_time_temporal ()
virtual longlong	val_date_temporal ()
longlong	val_temporal_by_field_type ()
String *	val_str (String *str)
virtual String *	val_str (String , String )=0
String *	val_int_as_str (String *val_buffer, my_bool unsigned_flag)
virtual bool	str_needs_quotes ()
virtual Item_result	numeric_context_result_type () const
virtual Item_result	cmp_type () const
virtual Item_result	cast_to_int_type () const
virtual bool	eq (Field *field)
virtual uint32	pack_length () const
virtual uint32	pack_length_in_rec () const
virtual bool	compatible_field_size (uint metadata, Relay_log_info rli, uint16 mflags, int order)
virtual int	save_field_metadata (uchar *first_byte)
virtual uint32	data_length ()
virtual uint32	sort_length () const
virtual uint32	max_data_length () const
virtual type_conversion_status	reset (void)
virtual void	reset_fields ()
virtual bool	get_timestamp (struct timeval tm, int warnings)
virtual void	store_timestamp (const timeval *tm)
void	store_timestamp (my_time_t sec)
virtual void	set_default ()
void	evaluate_insert_default_function ()
void	evaluate_update_default_function ()
virtual bool	binary () const
virtual bool	zero_pack () const
virtual enum ha_base_keytype	key_type () const
virtual uint32	key_length () const
virtual enum_field_types	type () const =0
virtual enum_field_types	real_type () const
virtual enum_field_types	binlog_type () const
int	cmp (const uchar *str)
virtual int	cmp_max (const uchar a, const uchar b, uint max_len)
virtual int	cmp (const uchar , const uchar )=0
virtual int	cmp_binary (const uchar a, const uchar b, uint32 max_length=~0L)
virtual int	cmp_offset (uint row_offset)
virtual int	cmp_binary_offset (uint row_offset)
virtual int	key_cmp (const uchar a, const uchar b)
virtual int	key_cmp (const uchar *str, uint length)
virtual void	sql_type (String &str) const =0
bool	is_temporal () const
bool	is_temporal_with_date () const
bool	is_temporal_with_time () const
bool	is_temporal_with_date_and_time () const
bool	is_null (my_ptrdiff_t row_offset=0) const
bool	is_real_null (my_ptrdiff_t row_offset=0) const
bool	is_null_in_record (const uchar *record) const
void	set_null (my_ptrdiff_t row_offset=0)
void	set_notnull (my_ptrdiff_t row_offset=0)
bool	maybe_null (void) const
bool	real_maybe_null (void) const
uint	null_offset (const uchar *record) const
uint	null_offset () const
void	set_null_ptr (uchar *p_null_ptr, uint p_null_bit)
size_t	last_null_byte () const
virtual void	make_field (Send_field *)
virtual void	make_sort_key (uchar *buff, uint length)=0
virtual bool	optimize_range (uint idx, uint part)
virtual bool	can_be_compared_as_longlong () const
virtual void	free ()
virtual Field *	new_field (MEM_ROOT root, TABLE new_table, bool keep_type)
virtual Field *	new_key_field (MEM_ROOT root, TABLE new_table, uchar new_ptr, uchar new_null_ptr, uint new_null_bit)
Field *	new_key_field (MEM_ROOT root, TABLE new_table, uchar *new_ptr)
virtual Field *	clone () const =0
virtual Field *	clone (MEM_ROOT *mem_root) const =0
void	move_field (uchar ptr_arg, uchar null_ptr_arg, uchar null_bit_arg)
void	move_field (uchar *ptr_arg)
virtual void	move_field_offset (my_ptrdiff_t ptr_diff)
virtual void	get_image (uchar buff, uint length, const CHARSET_INFO cs)
virtual void	set_image (const uchar buff, uint length, const CHARSET_INFO cs)
virtual uint	get_key_image (uchar *buff, uint length, imagetype type)
virtual void	set_key_image (const uchar *buff, uint length)
longlong	val_int_offset (uint row_offset)
longlong	val_int (const uchar *new_ptr)
String *	val_str (String str, const uchar new_ptr)
virtual bool	send_binary (Protocol *protocol)
virtual uchar *	pack (uchar to, const uchar from, uint max_length, bool low_byte_first)
uchar *	pack (uchar to, const uchar from)
virtual const uchar *	unpack (uchar to, const uchar from, uint param_data, bool low_byte_first)
const uchar *	unpack (uchar to, const uchar from)
virtual uint	packed_col_length (const uchar *to, uint length)
virtual uint	max_packed_col_length (uint max_length)
uint	offset (uchar *record)
void	copy_from_tmp (int offset)
uint	fill_cache_field (struct st_cache_field *copy)
virtual const CHARSET_INFO *	charset_for_protocol (void) const
virtual const CHARSET_INFO *	sort_charset (void) const
virtual bool	has_charset (void) const
virtual bool	match_collation_to_optimize_range () const
virtual void	set_derivation (enum Derivation derivation_arg)
bool	set_warning (Sql_condition::enum_warning_level, unsigned int code, int cuted_increment) const
bool	check_overflow (int op_result)
bool	check_truncated (int op_result)
bool	warn_if_overflow (int op_result)
void	init (TABLE *table_arg)
virtual uint32	max_display_length ()=0
longlong	convert_decimal2longlong (const my_decimal val, bool unsigned_flag, bool has_overflow)
virtual uint32	char_length ()
virtual geometry_type	get_geometry_type ()
void	dbug_print ()
ha_storage_media	field_storage_type () const
void	set_storage_type (ha_storage_media storage_type_arg)
column_format_type	column_format () const
void	set_column_format (column_format_type column_format_arg)
virtual type_conversion_status	validate_stored_val (THD *thd)
virtual void	hash (ulong nr, ulong nr2)

Public Attributes
const uint8	dec
bool	zerofill
bool	unsigned_flag
Public Attributes inherited from Field
uchar *	ptr
TABLE *	table
TABLE *	orig_table
const char **	table_name
const char *	field_name
LEX_STRING	comment
key_map	key_start
key_map	part_of_key
key_map	part_of_key_not_clustered
key_map	part_of_sortkey
utype	unireg_check
uint32	field_length
uint32	flags
uint16	field_index
uchar	null_bit
bool	is_created_from_null_item

Friends
class	Create_field

Additional Inherited Members
Public Types inherited from Field
enum	utype { NONE, DATE, SHIELD, NOEMPTY, CASEUP, PNR, BGNR, PGNR, YES, NO, REL, CHECK, EMPTY, UNKNOWN_FIELD, CASEDN, NEXT_NUMBER, INTERVAL_FIELD, BIT_FIELD, TIMESTAMP_OLD_FIELD, CAPITALIZE, BLOB_FIELD, TIMESTAMP_DN_FIELD, TIMESTAMP_UN_FIELD, TIMESTAMP_DNUN_FIELD }
enum	geometry_type { GEOM_GEOMETRY = 0, GEOM_POINT = 1, GEOM_LINESTRING = 2, GEOM_POLYGON = 3, GEOM_MULTIPOINT = 4, GEOM_MULTILINESTRING = 5, GEOM_MULTIPOLYGON = 6, GEOM_GEOMETRYCOLLECTION = 7 }
enum	imagetype { itRAW, itMBR }
enum	{ LAST_NULL_BYTE_UNDEF = 0 }
Static Public Member Functions inherited from Field
static void *	operator new (size_t size) throw ()
static void *	operator new (size_t size, MEM_ROOT *mem_root) throw ()
static void	operator delete (void ptr, MEM_ROOT mem_root)
static void	operator delete (void *ptr_arg, size_t size) throw ()
static bool	type_can_have_key_part (enum_field_types)
static enum_field_types	field_type_merge (enum_field_types, enum_field_types)
static Item_result	result_merge_type (enum_field_types)
Protected Member Functions inherited from Field
uchar *	pack_int16 (uchar to, const uchar from, bool low_byte_first_to)
const uchar *	unpack_int16 (uchar to, const uchar from, bool low_byte_first_from)
uchar *	pack_int24 (uchar to, const uchar from, bool low_byte_first_to)
const uchar *	unpack_int24 (uchar to, const uchar from, bool low_byte_first_from)
uchar *	pack_int32 (uchar to, const uchar from, bool low_byte_first_to)
const uchar *	unpack_int32 (uchar to, const uchar from, bool low_byte_first_from)
uchar *	pack_int64 (uchar to, const uchar from, bool low_byte_first_to)
const uchar *	unpack_int64 (uchar to, const uchar from, bool low_byte_first_from)
bool	field_flags_are_binary ()
Static Protected Member Functions inherited from Field
static void	handle_int16 (uchar to, const uchar from, bool low_byte_first_from, bool low_byte_first_to)
static void	handle_int24 (uchar to, const uchar from, bool low_byte_first_from, bool low_byte_first_to)
static void	handle_int32 (uchar to, const uchar from, bool low_byte_first_from, bool low_byte_first_to)
static void	handle_int64 (uchar to, const uchar from, bool low_byte_first_from, bool low_byte_first_to)
Protected Attributes inherited from Field
uchar *	null_ptr

Detailed Description

Definition at line 1428 of file field.h.

Constructor & Destructor Documentation

Field_num::Field_num	(	uchar *	ptr_arg,
		uint32	len_arg,
		uchar *	null_ptr_arg,
		uchar	null_bit_arg,
		utype	unireg_check_arg,
		const char *	field_name_arg,
		uint8	dec_arg,
		bool	zero_arg,
		bool	unsigned_arg
	)

Numeric fields base class constructor.

Definition at line 1147 of file field.cc.

Member Function Documentation

type_conversion_status Field_num::check_int	(	const CHARSET_INFO *	cs,
		const char *	str,
		int	length,
		const char *	int_end,
		int	error
	)

Test if given number is a int.

Todo:: Make this multi-byte-character safe

Parameters

str	String to test
length	Length of 'str'
int_end	Pointer to char after last used digit
cs	Character set

Note: This is called after one has called strntoull10rnd() function.

Returns: TYPE_OK, TYPE_ERR_BAD_VALUE or TYPE_WARN_TRUNCATED

Definition at line 1194 of file field.cc.

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bool Field_num::eq_def ( Field * field )

virtual

Returns: returns 1 if the fields are equally defined

Reimplemented from Field.

Definition at line 8903 of file field.cc.

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uint Field_num::is_equal ( Create_field * new_field )

virtual

Check whether two numeric fields can be considered 'equal' for table alteration purposes. Fields are equal if they are of the same type and retain the same pack length.

Reimplemented from Field.

Reimplemented in Field_new_decimal.

Definition at line 8923 of file field.cc.

type_conversion_status Field_num::store_decimal ( const my_decimal * val )

virtual

Storing decimal in integer fields.

Parameters

val	value for storing

Note: This method is used by all integer fields, real/decimal redefine it

Return values

TYPE_OK	Storage of value went fine without warnings or errors
!TYPE_OK	Warning/error as indicated by type_conversion_status enum value

Implements Field.

Reimplemented in Field_new_decimal, and Field_real.

Definition at line 1676 of file field.cc.

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type_conversion_status Field_num::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.

Reimplemented in Field_year, Field_new_decimal, and Field_real.

Definition at line 1292 of file field.cc.

my_decimal * Field_num::val_decimal ( my_decimal * decimal_value )

virtual

Return decimal value of integer field.

Parameters

decimal_value buffer for storing decimal value

Note: This method is used by all integer fields, real/decimal redefine it. All longlong values fit in our decimal buffer which cal store 8*9=72 digits of integer number

Returns: pointer to decimal buffer with value of field

Implements Field.

Reimplemented in Field_new_decimal, and Field_real.

Definition at line 1700 of file field.cc.

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

sql/field.h
sql/field.cc

Public Member Functions

Public Attributes

Friends

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation