#include <blob.h>
Public Types | |
enum | utype { NONE, NEXT_NUMBER, TIMESTAMP_OLD_FIELD, TIMESTAMP_DN_FIELD, TIMESTAMP_UN_FIELD, TIMESTAMP_DNUN_FIELD } |
Public Member Functions | |
Field_blob (unsigned char *ptr_arg, unsigned char *null_ptr_arg, unsigned char null_bit_arg, const char *field_name_arg, TableShare *share, const charset_info_st *const cs) | |
Field_blob (uint32_t len_arg, bool maybe_null_arg, const char *field_name_arg, const charset_info_st *const cs) | |
enum_field_types | type () const |
enum ha_base_keytype | key_type () const |
int | store (const char *to, uint32_t length, const charset_info_st *const charset) |
int | store (double nr) |
int | store (int64_t nr, bool unsigned_val) |
double | val_real (void) const |
int64_t | val_int (void) const |
String * | val_str (String *, String *) const |
type::Decimal * | val_decimal (type::Decimal *) const |
int | cmp_max (const unsigned char *, const unsigned char *, uint32_t max_length) |
int | cmp (const unsigned char *a, const unsigned char *b) |
int | cmp (const unsigned char *a, uint32_t a_length, const unsigned char *b, uint32_t b_length) |
int | cmp_binary (const unsigned char *a, const unsigned char *b, uint32_t max_length=UINT32_MAX) |
int | key_cmp (const unsigned char *, const unsigned char *) |
int | key_cmp (const unsigned char *str, uint32_t length) |
uint32_t | key_length () const |
void | sort_string (unsigned char *buff, uint32_t length) |
uint32_t | pack_length () const |
uint32_t | pack_length_no_ptr () const |
uint32_t | sort_length () const |
virtual uint32_t | max_data_length () const |
int | reset (void) |
void | reset_fields () |
void | store_length (unsigned char *i_ptr, uint32_t i_number) |
void | store_length (uint32_t number) |
uint32_t | get_packed_size (const unsigned char *ptr_arg, bool low_byte_first) |
DRIZZLED_API uint32_t | get_length (uint32_t row_offset=0) const |
DRIZZLED_API uint32_t | get_length (const unsigned char *ptr, bool low_byte_first) const |
DRIZZLED_API uint32_t | get_length (const unsigned char *ptr_arg) const |
void | put_length (unsigned char *pos, uint32_t length) |
unsigned char * | get_ptr () const |
void | set_ptr (unsigned char *length, unsigned char *data) |
void | set_ptr_offset (ptrdiff_t ptr_diff, uint32_t length, unsigned char *data) |
void | set_ptr (uint32_t length, unsigned char *data) |
uint32_t | get_key_image (unsigned char *buff, uint32_t length) |
uint32_t | get_key_image (std::basic_string< unsigned char > &buff, uint32_t length) |
void | set_key_image (const unsigned char *buff, uint32_t length) |
void | copy () |
virtual unsigned char * | pack (unsigned char *to, const unsigned char *from, uint32_t max_length, bool low_byte_first) |
unsigned char * | pack_key (unsigned char *to, const unsigned char *from, uint32_t max_length, bool low_byte_first) |
virtual const unsigned char * | unpack (unsigned char *to, const unsigned char *from, uint32_t, bool low_byte_first) |
void | free () |
uint32_t | size_of () const |
bool | has_charset (void) const |
uint32_t | max_display_length () |
Item_result | result_type () const |
uint32_t | decimals () const |
int | store_decimal (const type::Decimal *) |
const charset_info_st * | charset (void) const |
void | set_charset (const charset_info_st *const charset_arg) |
enum Derivation | derivation (void) const |
virtual void | set_derivation (enum Derivation derivation_arg) |
bool | binary () const |
virtual bool | str_needs_quotes () |
Table * | getTable () |
Table * | getTable () const |
void | setTable (Table *table_arg) |
bool | isUnsigned () const |
uint16_t | position () const |
void | setPosition (uint32_t arg) |
bool | hasDefault () const |
int | store_and_check (enum_check_fields check_level, const char *to, uint32_t length, const charset_info_st *const cs) |
virtual int | store_time (type::Time <ime, type::timestamp_t t_type) |
String * | val_str_internal (String *str) const |
String * | val_str_internal (String *str, const unsigned char *new_ptr) |
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 bool | is_timestamp () const |
virtual uint32_t | pack_length_in_rec () const |
virtual uint32_t | data_length () |
virtual uint32_t | used_length () |
virtual void | set_default () |
virtual bool | zero_pack () const |
virtual enum_field_types | real_type () const |
int | cmp_internal (const unsigned char *str) |
virtual int | cmp_offset (uint32_t row_offset) |
virtual int | cmp_binary_offset (uint32_t row_offset) |
bool | is_null (ptrdiff_t row_offset=0) const |
bool | is_real_null (ptrdiff_t row_offset=0) const |
bool | is_null_in_record (const unsigned char *record) const |
bool | is_null_in_record_with_offset (ptrdiff_t offset) const |
void | set_null (ptrdiff_t row_offset=0) |
void | set_notnull (ptrdiff_t row_offset=0) |
bool | maybe_null (void) const |
bool | real_maybe_null (void) const |
virtual void | make_field (SendField *) |
virtual bool | optimize_range (uint32_t idx, uint32_t part) |
virtual bool | can_be_compared_as_int64_t () const |
virtual Field * | new_field (memory::Root *, Table *, bool keep_type) |
virtual Field * | new_key_field (memory::Root *root, Table *new_table, unsigned char *new_ptr, unsigned char *new_null_ptr, uint32_t new_null_bit) |
Field * | clone (memory::Root *, Table *) |
void | move_field (unsigned char *ptr_arg, unsigned char *null_ptr_arg, unsigned char null_bit_arg) |
void | move_field (unsigned char *ptr_arg) |
virtual void | move_field_offset (ptrdiff_t ptr_diff) |
virtual void | get_image (unsigned char *buff, uint32_t length, const charset_info_st *const) |
virtual void | get_image (std::basic_string< unsigned char > &buff, uint32_t length, const charset_info_st *const) |
virtual void | set_image (const unsigned char *buff, uint32_t length, const charset_info_st *const) |
int64_t | val_int_offset (uint32_t row_offset) |
int64_t | val_int_internal (const unsigned char *new_ptr) |
unsigned char * | pack (unsigned char *to, const unsigned char *from) |
const unsigned char * | unpack (unsigned char *to, const unsigned char *from) |
virtual const unsigned char * | unpack_key (unsigned char *to, const unsigned char *from, uint32_t max_length, bool low_byte_first) |
virtual uint32_t | max_packed_col_length (uint32_t max_length) |
uint32_t | offset (const unsigned char *record) |
void | copy_from_tmp (int offset) |
uint32_t | fill_cache_field (CacheField *copy) |
virtual bool | get_date (type::Time <ime, uint32_t fuzzydate) const |
virtual bool | get_time (type::Time <ime) const |
virtual const charset_info_st * | sort_charset (void) const |
bool | set_warning (DRIZZLE_ERROR::enum_warning_level, drizzled::error_t code, int cuted_increment) |
void | set_datetime_warning (DRIZZLE_ERROR::enum_warning_level, drizzled::error_t code, const char *str, uint32_t str_len, type::timestamp_t ts_type, int cuted_increment) |
void | set_datetime_warning (DRIZZLE_ERROR::enum_warning_level, drizzled::error_t code, int64_t nr, type::timestamp_t ts_type, int cuted_increment) |
void | set_datetime_warning (DRIZZLE_ERROR::enum_warning_level, const drizzled::error_t code, double nr, type::timestamp_t ts_type) |
bool | check_overflow (int op_result) |
int | warn_if_overflow (int op_result) |
void | init (Table *table_arg) |
virtual uint32_t | is_equal (CreateField *new_field) |
int64_t | convert_decimal2int64_t (const type::Decimal *val, bool unsigned_flag, int *err) |
uint32_t | char_length () const |
enum column_format_type | column_format () const |
virtual void | hash (uint32_t *nr, uint32_t *nr2) const |
bool | isReadSet () const |
bool | isWriteSet () |
void | setReadSet (bool arg=true) |
void | setWriteSet (bool arg=true) |
Static Public Member Functions | |
static void | store_length (unsigned char *i_ptr, uint32_t i_number, bool low_byte_first) |
static void * | operator new (size_t size) |
static void * | operator new (size_t size, memory::Root *mem_root) |
static void | operator delete (void *, size_t) |
static void | operator delete (void *, memory::Root *) |
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 | |
unsigned char * | ptr |
unsigned char * | null_ptr |
Table * | orig_table |
const char * | field_name |
str_ref | 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_t | field_length |
uint32_t | flags |
unsigned char | null_bit |
bool | is_created_from_null_item |
Protected Member Functions | |
int | report_if_important_data (const char *ptr, const char *end) |
void | pack_num (uint64_t arg, unsigned char *destination=NULL) |
void | pack_num (uint32_t arg, unsigned char *destination=NULL) |
uint64_t | unpack_num (uint64_t &destination, const unsigned char *arg=NULL) const |
uint32_t | unpack_num (uint32_t &destination, const unsigned char *arg=NULL) const |
Protected Attributes | |
String | value |
const charset_info_st * | field_charset |
enum Derivation | field_derivation |
Friends | |
int | field_conv (Field *to, Field *from) |
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inlinevirtualinherited |
Returns true for fields which, when compared with constant items, can be casted to int64_t. In this case we will at 'fix_fields' stage cast the constant items to int64_ts and at the execution stage use field->val_int() for comparison. Used to optimize clauses like 'a_column BETWEEN date_const AND date_const'.
Reimplemented in drizzled::field::Int64, drizzled::Field_datetime, drizzled::Field_date, drizzled::field::Size, drizzled::field::Boolean, drizzled::field::Epoch, drizzled::field::Microtime, and drizzled::field::Time.
Definition at line 359 of file field.h.
Referenced by drizzled::Item_field::result_as_int64_t().
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inherited |
This is used to generate a field in Table from TableShare
Definition at line 1133 of file field.cc.
References drizzled::memory::Root::memdup().
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inherited |
Conversion from decimal to int64_t with checking overflow and setting correct value (min/max) in case of overflow.
val | value which have to be converted |
unsigned_flag | type of integer in which we convert val |
err | variable to pass error code |
Definition at line 1040 of file field.cc.
References drizzled::Field::warn_if_overflow().
Referenced by drizzled::Field_num::store_decimal().
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virtualinherited |
Return the "real size" of the data in memory. For varstrings, this does not include the length bytes.
Definition at line 717 of file field.cc.
References drizzled::Field::pack_length().
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virtualinherited |
Returns true if the fields are equally defined
true | This Field is equally defined to supplied Field |
false | This Field is NOT equally defined to supplied Field |
Reimplemented in drizzled::Field_enum, and drizzled::Field_num.
Definition at line 1146 of file field.cc.
References drizzled::Field::pack_length().
Referenced by drizzled::check_simple_equality(), drizzled::create_tmp_field(), drizzled::Field_num::eq_def(), and drizzled::Field_enum::eq_def().
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staticinherited |
Return type of which can carry value of both given types in UNION result.
a | type for merging |
b | type for merging |
type | of field |
Definition at line 687 of file field.cc.
Referenced by drizzled::Item_type_holder::join_types().
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virtual |
Copy a field part into an output buffer.
This function makes a copy of field part of size equal to or less than "length" parameter value. For fields of string types (VARCHAR, TEXT) the rest of buffer is padded by zero byte.
output | buffer |
output | buffer size |
For variable length character fields (i.e. UTF-8) the "length" parameter means a number of output buffer bytes as if all field characters have maximal possible size (mbmaxlen). In the other words, "length" parameter is a number of characters multiplied by field_charset->mbmaxlen.
Number | of copied bytes (excluding padded zero bytes – see above). |
Reimplemented from drizzled::Field.
Definition at line 335 of file blob.cc.
References drizzled::Field::ptr.
uint32_t drizzled::Field_blob::get_packed_size | ( | const unsigned char * | ptr_arg, |
bool | low_byte_first | ||
) |
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inlinevirtual |
Get the maximum size of the data in packed format.
Reimplemented from drizzled::Field_str.
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virtual |
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virtual |
Pack the field into a format suitable for storage and transfer.
To implement packing functionality, only the virtual function should be overridden. The other functions are just convenience functions and hence should not be overridden.
The value of low_byte_first
is dependent on how the packed data is going to be used: for local use, e.g., temporary store on disk or in memory, use the native format since that is faster. For data that is going to be transfered to other machines (e.g., when writing data to the binary log), data should always be stored in little-endian format.
max_length
characters.to | Pointer to memory area where representation of field should be put. |
from | Pointer to memory area where record representation of field is stored. |
max_length | Maximum length of the field, as given in the column definition. For example, for CHAR(1000) , the max_length is 1000. This information is sometimes needed to decide how to pack the data. |
low_byte_first | true if integers should be stored little-endian, false if native format should be used. Note that for little-endian machines, the value of this flag is a moot point since the native format is little-endian. |
Reimplemented from drizzled::Field.
Definition at line 450 of file blob.cc.
References drizzled::Field::ptr.
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virtual |
Create a packed key that will be used for storage from a MySQL row.
Reimplemented from drizzled::Field.
Definition at line 509 of file blob.cc.
References drizzled::Field::ptr.
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virtual |
Returns size (in bytes) used to store field data in memory (i.e. it returns the maximum size of the field in a row of the table, which is located in RAM).
Reimplemented from drizzled::Field.
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virtualinherited |
Returns size (in bytes) used to store field data on storage (i.e. it returns the maximal size of the field in a row of the table, which is located on disk).
Definition at line 712 of file field.cc.
References drizzled::Field::pack_length().
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inline |
void drizzled::Field_blob::put_length | ( | unsigned char * | pos, |
uint32_t | length | ||
) |
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staticinherited |
Detect Item_result by given field type of UNION merge result.
field_type | given field type |
Definition at line 695 of file field.cc.
Referenced by drizzled::Item_type_holder::join_types(), and drizzled::Item_type_holder::result_type().
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inherited |
Produce warning or note about datetime string data saved into field.
level | level of message (Note/Warning/Error) |
code | error code of message to be produced |
str | string value which we tried to save |
str_length | length of string which we tried to save |
ts_type | type of datetime value (datetime/date/time) |
cuted_increment | whenever we should increase cut fields count or not |
Definition at line 1237 of file field.cc.
References drizzled::Field::field_name, and drizzled::Field::set_warning().
Referenced by drizzled::Field_date::store_time().
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inherited |
Produce warning or note about integer datetime value saved into field.
level | level of message (Note/Warning/Error) |
code | error code of message to be produced |
nr | numeric value which we tried to save |
ts_type | type of datetime value (datetime/date/time) |
cuted_increment | whenever we should increase cut fields count or not |
Definition at line 1252 of file field.cc.
References drizzled::Field::field_name, and drizzled::Field::set_warning().
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inherited |
Produce warning or note about double datetime data saved into field.
level | level of message (Note/Warning/Error) |
code | error code of message to be produced |
nr | double value which we tried to save |
ts_type | type of datetime value (datetime/date/time) |
Definition at line 1269 of file field.cc.
References drizzled::Field::field_name, and drizzled::Field::set_warning().
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inherited |
Produce warning or note about data saved into field.
level | - level of message (Note/Warning/Error) |
code | - error code of message to be produced |
cuted_increment | - whenever we should increase cut fields count or not |
if count_cuted_fields == CHECK_FIELD_IGNORE then we ignore notes. This allows us to avoid notes in optimisation, like convert_constant_item().
1 | if count_cuted_fields == CHECK_FIELD_IGNORE and error level is not NOTE |
0 | otherwise |
Definition at line 1217 of file field.cc.
References drizzled::Session::cuted_fields, drizzled::Field::field_name, drizzled::Table::in_use, drizzled::Session::row_count, and drizzled::Field::table.
Referenced by drizzled::Field_num::check_int(), drizzled::do_cut_string(), drizzled::do_cut_string_complex(), drizzled::Field::set_datetime_warning(), drizzled::set_field_to_null_with_conversions(), drizzled::Field_date::store_time(), and drizzled::Field::warn_if_overflow().
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virtual |
Store double value in Field_varstring.
Pretty prints double number into field_length characters buffer.
nr | number |
Reimplemented from drizzled::Field_str.
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virtualinherited |
Decimal representation of Field_str.
d | value for storing |
0 | OK |
!=0 | error |
Implements drizzled::Field.
Reimplemented in drizzled::Field_null, and drizzled::field::Epoch.
Definition at line 102 of file str.cc.
References drizzled::class_decimal2string().
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virtualinherited |
This is called when storing a date in a string.
Reimplemented in drizzled::Field_decimal, drizzled::Field_date, drizzled::Field_datetime, and drizzled::field::Microtime.
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staticinherited |
Check whether a field type can be partially indexed by a key.
This is a static method, rather than a virtual function, because we need to check the type of a non-Field in alter_table().
type | field type |
true | Type can have a prefixed key |
false | Type can not have a prefixed key |
Definition at line 859 of file field.cc.
Referenced by drizzled::prepare_alter_table().
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virtual |
Unpack a blob field from row data.
This method is used to unpack a blob field from a master whose size of the field is less than that of the slave. Note: This method is included to satisfy inheritance rules, but is not needed for blob fields. It simply is used as a pass-through to the original unpack() method for blob fields.
to | Destination of the data |
from | Source of the data |
param_data | true if base types should be stored in little- endian format, false if native format should be used. |
Reimplemented from drizzled::Field.
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virtualinherited |
Returns the number of bytes actually used to store the data of the field. So for a varstring it includes both lenght byte(s) and string data, and anything after data_length() bytes are unused.
Reimplemented in drizzled::Field_varstring.
Definition at line 722 of file field.cc.
References drizzled::Field::pack_length().
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inherited |
Process decimal library return codes and issue warnings for overflow and truncation.
op_result | decimal library return code (E_DEC_* see include/decimal.h) |
E_DEC_OVERFLOW | there was overflow E_DEC_TRUNCATED there was truncation |
0 | no error or there was some other error except overflow or truncation |
Definition at line 871 of file field.cc.
References drizzled::Field::set_warning().
Referenced by drizzled::Field::convert_decimal2int64_t(), drizzled::Field_decimal::store(), and drizzled::Field_decimal::store_value().
Simple quick field convert that is called on insert.
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inherited |
A comment about the field
Definition at line 103 of file field.h.
Referenced by drizzled::CreateField::CreateField().
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inherited |
Length of this field in bytes
Definition at line 129 of file field.h.
Referenced by drizzled::calc_group_buffer(), drizzled::CreateField::CreateField(), drizzled::field_conv(), drizzled::Field_varstring::pack_length(), and drizzled::Field::pack_length().
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inherited |
Name of the field
Definition at line 102 of file field.h.
Referenced by drizzled::Field_num::check_int(), create_index(), create_table_def(), drizzled::create_tmp_field_from_field(), drizzled::CreateField::CreateField(), drizzled::Item_default_value::fix_fields(), ha_innobase::innobase_initialize_autoinc(), drizzled::prepare_alter_table(), drizzled::Item_field::reset_field(), drizzled::Field::set_datetime_warning(), drizzled::set_field_to_null_with_conversions(), drizzled::Field::set_warning(), drizzled::TransactionServices::setDeleteHeader(), and drizzled::TransactionServices::setUpdateHeader().
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inherited |
If true, this field was created in create_tmp_field_from_item from a NULL value. This means that the type of the field is just a guess, and the type may be freely coerced to another type.
Definition at line 161 of file field.h.
Referenced by drizzled::create_tmp_field_from_item(), and drizzled::Item_type_holder::get_real_type().
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inherited |
The field is part of the following keys
Definition at line 106 of file field.h.
Referenced by drizzled::make_join_statistics(), and drizzled::update_const_equal_items().
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inherited |
Bit used to test null bit
Definition at line 152 of file field.h.
Referenced by build_template(), drizzled::Table::compare_records(), drizzled::create_tmp_table(), field_in_record_is_null(), drizzled::CopyField::set(), and set_field_in_record_to_null().
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inherited |
Byte where null_bit is
Definition at line 72 of file field.h.
Referenced by build_template(), calc_row_difference(), drizzled::Table::compare_records(), create_table_def(), drizzled::create_tmp_table(), field_in_record_is_null(), drizzled::CopyField::set(), and set_field_in_record_to_null().
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inherited |
Pointer to the original Table. What is "the original table"?
Definition at line 101 of file field.h.
Referenced by drizzled::change_to_use_tmp_fields(), and drizzled::create_tmp_field_from_field().
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inherited |
Position to field in record. Stores raw field value
Definition at line 71 of file field.h.
Referenced by drizzled::create_tmp_table(), drizzled::CreateField::CreateField(), drizzled::TransactionServices::deleteRecord(), drizzled::field_conv(), get_field_offset(), get_key_image(), innobase_col_to_mysql(), drizzled::TransactionServices::isFieldUpdated(), drizzled::SortParam::make_sortkey(), pack(), pack_key(), drizzled::CopyField::set(), drizzled::Field_datetime::store_time(), drizzled::Field_date::store_time(), drizzled::Field_decimal::store_value(), drizzled::unpack_addon_fields(), and drizzled::Field_decimal::val_decimal().