Field_longstr Class Reference

Inheritance diagram for Field_longstr:

Collaboration diagram for Field_longstr:

Public Member Functions
	Field_longstr (uchar *ptr_arg, uint32 len_arg, uchar *null_ptr_arg, uchar null_bit_arg, utype unireg_check_arg, const char *field_name_arg, const CHARSET_INFO *charset_arg)
type_conversion_status	store_decimal (const my_decimal *d)
uint32	max_data_length () const
Public Member Functions inherited from Field_str
	Field_str (uchar *ptr_arg, uint32 len_arg, uchar *null_ptr_arg, uchar null_bit_arg, utype unireg_check_arg, const char *field_name_arg, const CHARSET_INFO *charset)
Item_result	result_type () const
Item_result	numeric_context_result_type () const
uint	decimals () const
void	make_field (Send_field *field)
type_conversion_status	store (double nr)
type_conversion_status	store (longlong nr, bool unsigned_val)=0
type_conversion_status	store (const char *to, uint length, const CHARSET_INFO *cs)=0
uint	repertoire (void) const
const CHARSET_INFO *	charset (void) const
void	set_charset (const CHARSET_INFO *charset_arg)
enum Derivation	derivation (void) const
virtual void	set_derivation (enum Derivation derivation_arg)
bool	binary () const
uint32	max_display_length ()
virtual bool	str_needs_quotes ()
uint	is_equal (Create_field *new_field)
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_packed (longlong nr)
virtual type_conversion_status	store_time (MYSQL_TIME *ltime, uint8 dec)
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 ()
virtual my_decimal *	val_decimal (my_decimal *)=0
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 Item_result	cmp_type () const
virtual Item_result	cast_to_int_type () const
virtual bool	eq (Field *field)
virtual bool	eq_def (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 uint	pack_length_from_metadata (uint field_metadata)
virtual uint	row_pack_length () const
virtual int	save_field_metadata (uchar *first_byte)
virtual uint32	data_length ()
virtual uint32	sort_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	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_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 bool	get_date (MYSQL_TIME *ltime, uint fuzzydate)
virtual bool	get_time (MYSQL_TIME *ltime)
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
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)
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)

Protected Member Functions
type_conversion_status	report_if_important_data (const char *ptr, const char *end, bool count_spaces) const
type_conversion_status	check_string_copy_error (const char *well_formed_error_pos, const char *cannot_convert_error_pos, const char *from_end_pos, const char *end, bool count_spaces, const CHARSET_INFO *cs) const

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)
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
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_str
const CHARSET_INFO *	field_charset
enum Derivation	field_derivation

Detailed Description

Definition at line 1508 of file field.h.

Member Function Documentation

type_conversion_status Field_longstr::check_string_copy_error ( const char *  well_formed_error_pos, const char *  cannot_convert_error_pos, const char *  from_end_pos, const char *  end, bool  count_spaces, const CHARSET_INFO *  cs  ) const

protected

Report "not well formed" or "cannot convert" error after storing a character string info a field.

As of version 5.0 both cases return the same error:

"Invalid string value: 'xxx' for column 't' at row 1"

Future versions will possibly introduce a new error message:

"Cannot convert character string: 'xxx' for column 't' at row 1"

Parameters

well_formed_error_pos	position of the first non-wellformed character in the source string
cannot_convert_error_pos	position of the first non-convertable character in the source string
from_end_pos	position where conversion stopped in the source string
end	end of the source string
count_spaces	treat trailing spaces as important data
cs	character set of the string

Returns

TYPE_OK, TYPE_NOTE_TRUNCATED, TYPE_WARN_TRUNCATED

Definition at line 6567 of file field.cc.

uint32 Field_longstr::max_data_length ( ) const

virtual

Get the maximum size of the data in packed format.

Returns

Maximum data length of the field when packed using the Field::pack() function.

Reimplemented from Field.

Reimplemented in Field_blob.

Definition at line 6739 of file field.cc.

type_conversion_status Field_longstr::store_decimal ( const my_decimal *  d )

virtual

Decimal representation of Field_str.

Parameters

d	value for storing

Note

Field_str is the base class for fields implemeting [VAR]CHAR, VAR[BINARY], BLOB/TEXT, GEOMETRY. String value should be converted to floating point value according our rules, so we use double to store value of decimal in string.

Todo:

use decimal2string?

Return values

0	OK
!=0	error

Reimplemented from Field_str.

Definition at line 6731 of file field.cc.

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

• sql/field.h
• sql/field.cc