Field_longstr Class Reference

Inheritance diagram for Field_longstr:

List of all members.

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
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

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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

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.

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.

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

• field.h
• field.cc