18
18
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
21
#ifndef DRIZZLED_FIELD_STR_H
22
#define DRIZZLED_FIELD_STR_H
24
#include <drizzled/field.h>
29
typedef struct charset_info_st CHARSET_INFO;
21
#ifndef DRIZZLE_SERVER_FIELD_STR
22
#define DRIZZLE_SERVER_FIELD_STR
31
24
/* base class for all string related classes */
35
28
const CHARSET_INFO *field_charset;
36
29
enum Derivation field_derivation;
37
int report_if_important_data(const char *ptr, const char *end);
39
Field_str(unsigned char *ptr_arg,
41
unsigned char *null_ptr_arg,
42
unsigned char null_bit_arg,
43
const char *field_name_arg,
44
const CHARSET_INFO * const charset);
31
Field_str(unsigned char *ptr_arg,uint32_t len_arg, unsigned char *null_ptr_arg,
32
unsigned char null_bit_arg, utype unireg_check_arg,
33
const char *field_name_arg, const CHARSET_INFO * const charset);
45
34
Item_result result_type () const { return STRING_RESULT; }
46
35
uint32_t decimals() const { return NOT_FIXED_DEC; }
49
36
int store(double nr);
50
37
int store(int64_t nr, bool unsigned_val)=0;
51
38
int store_decimal(const my_decimal *);
52
39
int store(const char *to,uint32_t length, const CHARSET_INFO * const cs)=0;
54
40
uint32_t size_of() const { return sizeof(*this); }
55
41
const CHARSET_INFO *charset(void) const { return field_charset; }
56
void set_charset(const CHARSET_INFO * const charset_arg)
57
{ field_charset= charset_arg; }
42
void set_charset(const CHARSET_INFO * const charset_arg) { field_charset= charset_arg; }
58
43
enum Derivation derivation(void) const { return field_derivation; }
59
44
virtual void set_derivation(enum Derivation derivation_arg)
60
45
{ field_derivation= derivation_arg; }
61
46
bool binary() const { return field_charset == &my_charset_bin; }
62
47
uint32_t max_display_length() { return field_length; }
63
friend class CreateField;
48
friend class Create_field;
64
49
my_decimal *val_decimal(my_decimal *);
65
50
virtual bool str_needs_quotes() { return true; }
66
uint32_t max_data_length() const;
51
bool compare_str_field_flags(Create_field *new_field, uint32_t flags);
52
uint32_t is_equal(Create_field *new_field);
70
Report "not well formed" or "cannot convert" error
71
after storing a character string info a field.
74
check_string_copy_error()
76
well_formed_error_pos - where not well formed data was first met
77
cannot_convert_error_pos - where a not-convertable character was first met
78
end - end of the string
79
cs - character set of the string
82
As of version 5.0 both cases return the same error:
84
"Invalid string value: 'xxx' for column 't' at row 1"
86
Future versions will possibly introduce a new error message:
88
"Cannot convert character string: 'xxx' for column 't' at row 1"
91
false - If errors didn't happen
92
true - If an error happened
95
bool check_string_copy_error(Field_str *field,
96
const char *well_formed_error_pos,
97
const char *cannot_convert_error_pos,
99
const CHARSET_INFO * const cs);
102
} /* namespace drizzled */
104
#endif /* DRIZZLED_FIELD_STR_H */