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mariadb/sql/field.h
unknown 32b28f9298 WL#1266 "Separate auto-set logic from TIMESTAMP type." 
Final version of patch.

Adds support for specifying of DEFAULT NOW() and/or ON UPDATE NOW()
clauses for TIMESTAMP field definition.
Current implementation allows only one such field per table and
uses several unireg types for storing info about this properties of
field. It should be replaced with better implementation when new
.frm format is introduced.


include/mysqld_error.h:
  Added error codes for case when we have more than one column with NOW()
  in DEFAULT or ON UPDATE clauses and for case when we are using ON UPDATE
  clause with wrong type.
mysql-test/r/create.result:
  Added tests for using of DEFAULT NOW() and ON UPDATE NOW() with
  non-TIMESTAMP fields.
mysql-test/r/show_check.result:
  Updated test results to reflect new default look of TIMESTAMP fields
  in SHOW CREATE TABLE.
mysql-test/r/system_mysql_db.result:
  Updated test results to reflect new default look of TIMESTAMP fields
  in SHOW CREATE TABLE.
mysql-test/r/type_ranges.result:
  Updated test results to reflect new default look of TIMESTAMP fields
  in SHOW COLUMNS.
mysql-test/r/type_timestamp.result:
  Added tests for various DEFAULT and ON UPDATE clauses for TIMESTAMP
  fields definitions.
mysql-test/t/create.test:
  Added tests for using of DEFAULT NOW() and ON UPDATE NOW() with
  non-TIMESTAMP fields.
mysql-test/t/type_timestamp.test:
  Added tests for various DEFAULT and ON UPDATE clauses for TIMESTAMP
  fields definitions.
sql/field.cc:
  Added support for various combinations of DEFAULT and ON UPDATE clauses
  for TIMESTAMP field. 
  
  Setting TABLE::timestamp* members for TIMESTAMP fields with auto-set 
  option taking into account their unireg type (which corresponds to 
  various DEFAULT/ON UPDATE values combinations). Replaced 
  TABLE::time_stamp with TABLE::timestamp_default_now/on_update_now
  couple moved their setup to separate method set_timestamp_offsets(),
  which now is called from  open_table instead of Field_timestamp cons.
sql/field.h:
  Added more unireg types for handling of DEFAULT NOW() and ON UPDATE
  NOW() for TIMESTAMP fields.
  Fixed value corresponding to DEFAULT item for TIMESTAMP field.
sql/ha_berkeley.cc:
  Now TIMESTAMP column with auto-set property could be updated during
  INSERT or/and UPDATE independently.
sql/ha_heap.cc:
  Now TIMESTAMP column with auto-set property could be updated during
  INSERT or/and UPDATE independently.
sql/ha_innodb.cc:
  Now TIMESTAMP column with auto-set property could be updated during
  INSERT or/and UPDATE independently.
sql/ha_isam.cc:
  Now TIMESTAMP column with auto-set property could be updated during
  INSERT or/and UPDATE independently.
sql/ha_isammrg.cc:
  Now TIMESTAMP column with auto-set property could be updated during
  INSERT or/and UPDATE independently.
sql/ha_myisam.cc:
  Now TIMESTAMP column with auto-set property could be updated during
  INSERT or/and UPDATE independently.
sql/ha_myisammrg.cc:
  Now TIMESTAMP column with auto-set property could be updated during
  INSERT or/and UPDATE independently.
sql/item_func.h:
  We need to distinguish NOW() from other function for using in 
  DEFAULT and in ON UPDATE clauses.
sql/item_timefunc.h:
  We need to distinguish NOW() from other function for using in 
  DEFAULT and in ON UPDATE clauses.
sql/mysql_priv.h:
  Added parameter for ON UPDATE value to add_field_to_list() function.
sql/share/czech/errmsg.txt:
  Added error messages for case when we have more than one column with
  NOW() (CURRENT_TIMESTAMP is just more standard alias) in DEFAULT or 
  ON UPDATE clauses and for case when we are using ON UPDATE clause with
  wrong type.
sql/share/danish/errmsg.txt:
  Added error messages for case when we have more than one column with
  NOW() (CURRENT_TIMESTAMP is just more standard alias) in DEFAULT or 
  ON UPDATE clauses and for case when we are using ON UPDATE clause with
  wrong type.
sql/share/dutch/errmsg.txt:
  Added error messages for case when we have more than one column with
  NOW() (CURRENT_TIMESTAMP is just more standard alias) in DEFAULT or 
  ON UPDATE clauses and for case when we are using ON UPDATE clause with
  wrong type.
sql/share/english/errmsg.txt:
  Added error messages for case when we have more than one column with
  NOW() (CURRENT_TIMESTAMP is just more standard alias) in DEFAULT or 
  ON UPDATE clauses and for case when we are using ON UPDATE clause with
  wrong type.
sql/share/estonian/errmsg.txt:
  Added error messages for case when we have more than one column with
  NOW() (CURRENT_TIMESTAMP is just more standard alias) in DEFAULT or 
  ON UPDATE clauses and for case when we are using ON UPDATE clause with
  wrong type.
sql/share/french/errmsg.txt:
  Added error messages for case when we have more than one column with
  NOW() (CURRENT_TIMESTAMP is just more standard alias) in DEFAULT or 
  ON UPDATE clauses and for case when we are using ON UPDATE clause with
  wrong type.
sql/share/german/errmsg.txt:
  Added error messages for case when we have more than one column with
  NOW() (CURRENT_TIMESTAMP is just more standard alias) in DEFAULT or 
  ON UPDATE clauses and for case when we are using ON UPDATE clause with
  wrong type.
sql/share/greek/errmsg.txt:
  Added error messages for case when we have more than one column with
  NOW() (CURRENT_TIMESTAMP is just more standard alias) in DEFAULT or 
  ON UPDATE clauses and for case when we are using ON UPDATE clause with
  wrong type.
sql/share/hungarian/errmsg.txt:
  Added error messages for case when we have more than one column with
  NOW() (CURRENT_TIMESTAMP is just more standard alias) in DEFAULT or 
  ON UPDATE clauses and for case when we are using ON UPDATE clause with
  wrong type.
sql/share/italian/errmsg.txt:
  Added error messages for case when we have more than one column with
  NOW() (CURRENT_TIMESTAMP is just more standard alias) in DEFAULT or 
  ON UPDATE clauses and for case when we are using ON UPDATE clause with
  wrong type.
sql/share/japanese/errmsg.txt:
  Added error messages for case when we have more than one column with
  NOW() (CURRENT_TIMESTAMP is just more standard alias) in DEFAULT or 
  ON UPDATE clauses and for case when we are using ON UPDATE clause with
  wrong type.
sql/share/korean/errmsg.txt:
  Added error messages for case when we have more than one column with
  NOW() (CURRENT_TIMESTAMP is just more standard alias) in DEFAULT or 
  ON UPDATE clauses and for case when we are using ON UPDATE clause with
  wrong type.
sql/share/norwegian-ny/errmsg.txt:
  Added error messages for case when we have more than one column with
  NOW() (CURRENT_TIMESTAMP is just more standard alias) in DEFAULT or 
  ON UPDATE clauses and for case when we are using ON UPDATE clause with
  wrong type.
sql/share/norwegian/errmsg.txt:
  Added error messages for case when we have more than one column with
  NOW() (CURRENT_TIMESTAMP is just more standard alias) in DEFAULT or 
  ON UPDATE clauses and for case when we are using ON UPDATE clause with
  wrong type.
sql/share/polish/errmsg.txt:
  Added error messages for case when we have more than one column with
  NOW() (CURRENT_TIMESTAMP is just more standard alias) in DEFAULT or 
  ON UPDATE clauses and for case when we are using ON UPDATE clause with
  wrong type.
sql/share/portuguese/errmsg.txt:
  Added error messages for case when we have more than one column with
  NOW() (CURRENT_TIMESTAMP is just more standard alias) in DEFAULT or 
  ON UPDATE clauses and for case when we are using ON UPDATE clause with
  wrong type.
sql/share/romanian/errmsg.txt:
  Added error messages for case when we have more than one column with
  NOW() (CURRENT_TIMESTAMP is just more standard alias) in DEFAULT or 
  ON UPDATE clauses and for case when we are using ON UPDATE clause with
  wrong type.
sql/share/russian/errmsg.txt:
  Added error messages for case when we have more than one column with
  NOW() (CURRENT_TIMESTAMP is just more standard alias) in DEFAULT or 
  ON UPDATE clauses and for case when we are using ON UPDATE clause with
  wrong type.
sql/share/serbian/errmsg.txt:
  Added error messages for case when we have more than one column with
  NOW() (CURRENT_TIMESTAMP is just more standard alias) in DEFAULT or 
  ON UPDATE clauses and for case when we are using ON UPDATE clause with
  wrong type.
sql/share/slovak/errmsg.txt:
  Added error messages for case when we have more than one column with
  NOW() (CURRENT_TIMESTAMP is just more standard alias) in DEFAULT or 
  ON UPDATE clauses and for case when we are using ON UPDATE clause with
  wrong type.
sql/share/spanish/errmsg.txt:
  Added error messages for case when we have more than one column with
  NOW() (CURRENT_TIMESTAMP is just more standard alias) in DEFAULT or 
  ON UPDATE clauses and for case when we are using ON UPDATE clause with
  wrong type.
sql/share/swedish/errmsg.txt:
  Added error messages for case when we have more than one column with
  NOW() (CURRENT_TIMESTAMP is just more standard alias) in DEFAULT or 
  ON UPDATE clauses and for case when we are using ON UPDATE clause with
  wrong type.
sql/share/ukrainian/errmsg.txt:
  Added error messages for case when we have more than one column with
  NOW() (CURRENT_TIMESTAMP is just more standard alias) in DEFAULT or 
  ON UPDATE clauses and for case when we are using ON UPDATE clause with
  wrong type.
sql/sql_base.cc:
  Added setup of TABLE::timestamp_default_now/on_update_now pair
  for each statement to open_table().
sql/sql_insert.cc:
  Using TABLE::timestamp_default_now/on_update_now pair instead of
  old TABLE::time_stamp. Added check for case then REPLACE could not
  be converted to UPDATE because of different DEFAULT/ON UPDATE values
  for TIMESTAMP field.
sql/sql_lex.h:
  Added member for value used in ON UPDATE clause to st_lex.
sql/sql_load.cc:
  Using TABLE::timestamp_default_now/on_update_now pair instead of
  old TABLE::time_stamp. We don't need to restore these members
  since they are set up for each statement in open_table().
sql/sql_parse.cc:
  Added handling of DEFAULT NOW() and ON UPDATE NOW() clauses for
  TIMESTAMP fields to add_field_to_list() function.
sql/sql_show.cc:
  Added support for DEFAULT CURRENT_TIMESTAMP (aka NOW() ) and 
  ON UPDATE CURRENT_TIMESTAMP to SHOW CREATE TABLE and SHOW COLUMNS.
sql/sql_table.cc:
  mysql_create_table() function - added check for number of TIMESTAMP 
    fields with auto-set values and replacing of old style TIMESTAMPs
    with their newer analogs.
  mysql_alter_table(): Using TABLE::timestamp_default_now/on_update_now 
    pair instead of old TABLE::time_stamp. We don't need to restore these
    members since they are set up for each statement in open_table().
sql/sql_update.cc:
  Left only setting of TABLE::timestamp_default_now/on_update_now
  to 0 since they should be already set up in open_table().
sql/sql_yacc.yy:
  Added support for DEFAULT NOW() and ON UPDATE NOW() in field
  definitions.
sql/table.h:
  Replaced TABLE::time_stamp withTABLE::timestamp_default_now/timestamp_on_update_now
  pair which allows to distinguish TIMESTAMP's with various DEFAULT/ON UPDATE
  clauses and optimize checks if TIMESTAMP field should be set to NOW()
  in handlers.
sql/unireg.cc:
  Now we are marking only TIMESTAMP fields with NOW() as default or
  as on update value as special field for unireg.
2004-04-02 10:12:53 +04:00

1249 lines
47 KiB
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/* Copyright (C) 2000 MySQL AB & MySQL Finland AB & TCX DataKonsult AB
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
/*
Because of the function new_field() all field classes that have static
variables must declare the size_of() member function.
*/
#ifdef __GNUC__
#pragma interface /* gcc class implementation */
#endif
#define NOT_FIXED_DEC 31
class Send_field;
class Protocol;
struct st_cache_field;
void field_conv(Field *to,Field *from);
class Field
{
Field(const Item &); /* Prevent use of these */
void operator=(Field &);
public:
static void *operator new(size_t size) {return (void*) sql_alloc((uint) size); }
static void operator delete(void *ptr_arg, size_t size) {
#ifdef PEDANTIC_SAFEMALLOC
bfill(ptr_arg, size, 0x8F);
#endif
}
char *ptr; // Position to field in record
uchar *null_ptr; // Byte where null_bit is
struct st_table *table; // Pointer for table
struct st_table *orig_table; // Pointer to original table
const char *table_name,*field_name;
LEX_STRING comment;
ulong query_id; // For quick test of used fields
/* Field is part of the following keys */
key_map key_start,part_of_key,part_of_sortkey;
/*
We use three additional unireg types for TIMESTAMP to overcome limitation
of current binary format of .frm file. We'd like to be able to support
NOW() as default and on update value for such fields but unable to hold
this info anywhere except unireg_check field. This issue will be resolved
in more clean way with transition to new text based .frm format.
See also comment for Field_timestamp::Field_timestamp().
*/
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 field_cast_enum
{
FIELD_CAST_STOP, FIELD_CAST_DECIMAL, FIELD_CAST_TINY, FIELD_CAST_SHORT,
FIELD_CAST_MEDIUM, FIELD_CAST_LONG, FIELD_CAST_LONGLONG,
FIELD_CAST_FLOAT, FIELD_CAST_DOUBLE,
FIELD_CAST_NULL,
FIELD_CAST_TIMESTAMP, FIELD_CAST_YEAR, FIELD_CAST_DATE, FIELD_CAST_NEWDATE,
FIELD_CAST_TIME, FIELD_CAST_DATETIME,
FIELD_CAST_STRING, FIELD_CAST_VARSTRING, FIELD_CAST_BLOB,
FIELD_CAST_GEOM, FIELD_CAST_ENUM, FIELD_CAST_SET
};
utype unireg_check;
uint32 field_length; // Length of field
uint16 flags;
uchar null_bit; // Bit used to test null bit
uint abs_offset; // use only in group_concat
Field(char *ptr_arg,uint32 length_arg,uchar *null_ptr_arg,uchar null_bit_arg,
utype unireg_check_arg, const char *field_name_arg,
struct st_table *table_arg);
virtual ~Field() {}
virtual int store(const char *to,uint length,CHARSET_INFO *cs)=0;
virtual int store(double nr)=0;
virtual int store(longlong nr)=0;
virtual void store_time(TIME *ltime,timestamp_type t_type);
virtual double val_real(void)=0;
virtual longlong val_int(void)=0;
virtual String *val_str(String*,String *)=0;
virtual Item_result result_type () const=0;
virtual Item_result cmp_type () const { return result_type(); }
bool eq(Field *field) { return ptr == field->ptr && null_ptr == field->null_ptr; }
virtual bool eq_def(Field *field);
virtual uint32 pack_length() const { return (uint32) field_length; }
virtual void reset(void) { bzero(ptr,pack_length()); }
virtual void reset_fields() {}
virtual void set_default()
{
my_ptrdiff_t offset = (my_ptrdiff_t) (table->default_values -
table->record[0]);
memcpy(ptr, ptr + offset, pack_length());
if (null_ptr)
*null_ptr= ((*null_ptr & (uchar) ~null_bit) |
null_ptr[offset] & null_bit);
}
virtual bool binary() const { return 1; }
virtual bool zero_pack() const { return 1; }
virtual enum ha_base_keytype key_type() const { return HA_KEYTYPE_BINARY; }
virtual uint32 key_length() const { return pack_length(); }
virtual enum_field_types type() const =0;
virtual enum_field_types real_type() const { return type(); }
inline int cmp(const char *str) { return cmp(ptr,str); }
virtual int cmp(const char *,const char *)=0;
virtual int cmp_binary(const char *a,const char *b, uint32 max_length=~0L)
{ return memcmp(a,b,pack_length()); }
virtual int cmp_offset(uint row_offset)
{ return memcmp(ptr,ptr+row_offset,pack_length()); }
virtual int cmp_binary_offset(uint row_offset)
{ return memcmp(ptr,ptr+row_offset,pack_length()); }
virtual int key_cmp(const byte *a,const byte *b)
{ return cmp((char*) a,(char*) b); }
virtual int key_cmp(const byte *str, uint length)
{ return cmp(ptr,(char*) str); }
virtual uint decimals() const { return 0; }
/*
Caller beware: sql_type can change str.Ptr, so check
ptr() to see if it changed if you are using your own buffer
in str and restore it with set() if needed
*/
virtual void sql_type(String &str) const =0;
virtual uint size_of() const =0; // For new field
inline bool is_null(uint row_offset=0)
{ return null_ptr ? (null_ptr[row_offset] & null_bit ? 1 : 0) : table->null_row; }
inline bool is_real_null(uint row_offset=0)
{ return null_ptr ? (null_ptr[row_offset] & null_bit ? 1 : 0) : 0; }
inline bool is_null_in_record(const uchar *record)
{
if (!null_ptr)
return 0;
return test(record[(uint) (null_ptr - (uchar*) table->record[0])] &
null_bit);
}
inline void set_null(int row_offset=0)
{ if (null_ptr) null_ptr[row_offset]|= null_bit; }
inline void set_notnull(int row_offset=0)
{ if (null_ptr) null_ptr[row_offset]&= (uchar) ~null_bit; }
inline bool maybe_null(void) { return null_ptr != 0 || table->maybe_null; }
inline bool real_maybe_null(void) { return null_ptr != 0; }
virtual void make_field(Send_field *)=0;
virtual void sort_string(char *buff,uint length)=0;
virtual bool optimize_range(uint idx);
virtual bool store_for_compare() { return 0; }
virtual void free() {}
Field *new_field(MEM_ROOT *root, struct st_table *new_table)
{
Field *tmp= (Field*) memdup_root(root,(char*) this,size_of());
if (tmp)
{
if (tmp->table->maybe_null)
tmp->flags&= ~NOT_NULL_FLAG;
tmp->table= new_table;
tmp->key_start.init(0);
tmp->part_of_key.init(0);
tmp->part_of_sortkey.init(0);
tmp->unireg_check=Field::NONE;
tmp->flags&= (NOT_NULL_FLAG | BLOB_FLAG | UNSIGNED_FLAG |
ZEROFILL_FLAG | BINARY_FLAG | ENUM_FLAG | SET_FLAG);
#ifdef PROBABLY_WRONG
tmp->table_name= new_table->table_name;
#endif
tmp->reset_fields();
}
return tmp;
}
inline void move_field(char *ptr_arg,uchar *null_ptr_arg,uchar null_bit_arg)
{
ptr=ptr_arg; null_ptr=null_ptr_arg; null_bit=null_bit_arg;
}
inline void move_field(char *ptr_arg) { ptr=ptr_arg; }
inline void move_field(my_ptrdiff_t ptr_diff)
{
ptr=ADD_TO_PTR(ptr,ptr_diff,char*);
if (null_ptr)
null_ptr=ADD_TO_PTR(null_ptr,ptr_diff,uchar*);
}
inline void get_image(char *buff,uint length, CHARSET_INFO *cs)
{ memcpy(buff,ptr,length); }
inline void set_image(char *buff,uint length, CHARSET_INFO *cs)
{ memcpy(ptr,buff,length); }
virtual void get_key_image(char *buff,uint length, CHARSET_INFO *cs, imagetype type)
{ get_image(buff,length,cs); }
virtual void set_key_image(char *buff,uint length, CHARSET_INFO *cs)
{ set_image(buff,length,cs); }
inline longlong val_int_offset(uint row_offset)
{
ptr+=row_offset;
longlong tmp=val_int();
ptr-=row_offset;
return tmp;
}
virtual bool send_binary(Protocol *protocol);
virtual char *pack(char* to, const char *from, uint max_length=~(uint) 0)
{
uint32 length=pack_length();
memcpy(to,from,length);
return to+length;
}
virtual const char *unpack(char* to, const char *from)
{
uint length=pack_length();
memcpy(to,from,length);
return from+length;
}
virtual char *pack_key(char* to, const char *from, uint max_length)
{
return pack(to,from,max_length);
}
virtual char *pack_key_from_key_image(char* to, const char *from,
uint max_length)
{
return pack(to,from,max_length);
}
virtual uint packed_col_length(const char *to, uint length)
{ return length;}
virtual uint max_packed_col_length(uint max_length)
{ return max_length;}
virtual int pack_cmp(const char *a,const char *b, uint key_length_arg)
{ return cmp(a,b); }
virtual int pack_cmp(const char *b, uint key_length_arg)
{ return cmp(ptr,b); }
uint offset(); // Should be inline ...
void copy_from_tmp(int offset);
uint fill_cache_field(struct st_cache_field *copy);
virtual bool get_date(TIME *ltime,uint fuzzydate);
virtual bool get_time(TIME *ltime);
virtual CHARSET_INFO *charset(void) const { return &my_charset_bin; }
virtual bool has_charset(void) const { return FALSE; }
virtual void set_charset(CHARSET_INFO *charset) { }
void set_warning(const unsigned int level, const unsigned int code);
virtual field_cast_enum field_cast_type()= 0;
bool field_cast_compatible(field_cast_enum type);
friend bool reopen_table(THD *,struct st_table *,bool);
friend int cre_myisam(my_string name, register TABLE *form, uint options,
ulonglong auto_increment_value);
friend class Copy_field;
friend class Item_avg_field;
friend class Item_std_field;
friend class Item_sum_num;
friend class Item_sum_sum;
friend class Item_sum_str;
friend class Item_sum_count;
friend class Item_sum_avg;
friend class Item_sum_std;
friend class Item_sum_min;
friend class Item_sum_max;
friend class Item_func_group_concat;
};
class Field_num :public Field {
public:
const uint8 dec;
bool zerofill,unsigned_flag; // Purify cannot handle bit fields
Field_num(char *ptr_arg,uint32 len_arg, uchar *null_ptr_arg,
uchar null_bit_arg, utype unireg_check_arg,
const char *field_name_arg,
struct st_table *table_arg,
uint8 dec_arg,bool zero_arg,bool unsigned_arg)
:Field(ptr_arg, len_arg, null_ptr_arg, null_bit_arg,
unireg_check_arg, field_name_arg, table_arg),
dec(dec_arg),zerofill(zero_arg),unsigned_flag(unsigned_arg)
{
if (zerofill)
flags|=ZEROFILL_FLAG;
if (unsigned_flag)
flags|=UNSIGNED_FLAG;
}
Item_result result_type () const { return REAL_RESULT; }
void prepend_zeros(String *value);
void add_zerofill_and_unsigned(String &res) const;
friend class create_field;
void make_field(Send_field *);
uint decimals() const { return (uint) dec; }
uint size_of() const { return sizeof(*this); }
bool eq_def(Field *field);
};
class Field_str :public Field {
protected:
CHARSET_INFO *field_charset;
public:
Field_str(char *ptr_arg,uint32 len_arg, uchar *null_ptr_arg,
uchar null_bit_arg, utype unireg_check_arg,
const char *field_name_arg,
struct st_table *table_arg,CHARSET_INFO *charset)
:Field(ptr_arg, len_arg, null_ptr_arg, null_bit_arg,
unireg_check_arg, field_name_arg, table_arg)
{
field_charset=charset;
if (charset->state & MY_CS_BINSORT)
flags|=BINARY_FLAG;
}
Item_result result_type () const { return STRING_RESULT; }
uint decimals() const { return NOT_FIXED_DEC; }
void make_field(Send_field *);
uint size_of() const { return sizeof(*this); }
CHARSET_INFO *charset(void) const { return field_charset; }
void set_charset(CHARSET_INFO *charset) { field_charset=charset; }
bool binary() const { return field_charset->state & MY_CS_BINSORT ? 1 : 0; }
friend class create_field;
};
class Field_decimal :public Field_num {
public:
Field_decimal(char *ptr_arg, uint32 len_arg, uchar *null_ptr_arg,
uchar null_bit_arg,
enum utype unireg_check_arg, const char *field_name_arg,
struct st_table *table_arg,
uint8 dec_arg,bool zero_arg,bool unsigned_arg)
:Field_num(ptr_arg, len_arg, null_ptr_arg, null_bit_arg,
unireg_check_arg, field_name_arg, table_arg,
dec_arg, zero_arg,unsigned_arg)
{}
enum_field_types type() const { return FIELD_TYPE_DECIMAL;}
enum ha_base_keytype key_type() const
{ return zerofill ? HA_KEYTYPE_BINARY : HA_KEYTYPE_NUM; }
void reset(void);
int store(const char *to,uint length,CHARSET_INFO *charset);
int store(double nr);
int store(longlong nr);
double val_real(void);
longlong val_int(void);
String *val_str(String*,String *);
int cmp(const char *,const char*);
void sort_string(char *buff,uint length);
void overflow(bool negative);
bool zero_pack() const { return 0; }
void sql_type(String &str) const;
field_cast_enum field_cast_type() { return FIELD_CAST_DECIMAL; }
};
class Field_tiny :public Field_num {
public:
Field_tiny(char *ptr_arg, uint32 len_arg, uchar *null_ptr_arg,
uchar null_bit_arg,
enum utype unireg_check_arg, const char *field_name_arg,
struct st_table *table_arg,
bool zero_arg, bool unsigned_arg)
:Field_num(ptr_arg, len_arg, null_ptr_arg, null_bit_arg,
unireg_check_arg, field_name_arg, table_arg,
0, zero_arg,unsigned_arg)
{}
enum Item_result result_type () const { return INT_RESULT; }
enum_field_types type() const { return FIELD_TYPE_TINY;}
enum ha_base_keytype key_type() const
{ return unsigned_flag ? HA_KEYTYPE_BINARY : HA_KEYTYPE_INT8; }
int store(const char *to,uint length,CHARSET_INFO *charset);
int store(double nr);
int store(longlong nr);
void reset(void) { ptr[0]=0; }
double val_real(void);
longlong val_int(void);
String *val_str(String*,String *);
bool send_binary(Protocol *protocol);
int cmp(const char *,const char*);
void sort_string(char *buff,uint length);
uint32 pack_length() const { return 1; }
void sql_type(String &str) const;
field_cast_enum field_cast_type() { return FIELD_CAST_TINY; }
};
class Field_short :public Field_num {
public:
Field_short(char *ptr_arg, uint32 len_arg, uchar *null_ptr_arg,
uchar null_bit_arg,
enum utype unireg_check_arg, const char *field_name_arg,
struct st_table *table_arg,
bool zero_arg, bool unsigned_arg)
:Field_num(ptr_arg, len_arg, null_ptr_arg, null_bit_arg,
unireg_check_arg, field_name_arg, table_arg,
0, zero_arg,unsigned_arg)
{}
Field_short(uint32 len_arg,bool maybe_null_arg, const char *field_name_arg,
struct st_table *table_arg,bool unsigned_arg)
:Field_num((char*) 0, len_arg, maybe_null_arg ? (uchar*) "": 0,0,
NONE, field_name_arg, table_arg,0,0,unsigned_arg)
{}
enum Item_result result_type () const { return INT_RESULT; }
enum_field_types type() const { return FIELD_TYPE_SHORT;}
enum ha_base_keytype key_type() const
{ return unsigned_flag ? HA_KEYTYPE_USHORT_INT : HA_KEYTYPE_SHORT_INT;}
int store(const char *to,uint length,CHARSET_INFO *charset);
int store(double nr);
int store(longlong nr);
void reset(void) { ptr[0]=ptr[1]=0; }
double val_real(void);
longlong val_int(void);
String *val_str(String*,String *);
bool send_binary(Protocol *protocol);
int cmp(const char *,const char*);
void sort_string(char *buff,uint length);
uint32 pack_length() const { return 2; }
void sql_type(String &str) const;
field_cast_enum field_cast_type() { return FIELD_CAST_SHORT; }
};
class Field_medium :public Field_num {
public:
Field_medium(char *ptr_arg, uint32 len_arg, uchar *null_ptr_arg,
uchar null_bit_arg,
enum utype unireg_check_arg, const char *field_name_arg,
struct st_table *table_arg,
bool zero_arg, bool unsigned_arg)
:Field_num(ptr_arg, len_arg, null_ptr_arg, null_bit_arg,
unireg_check_arg, field_name_arg, table_arg,
0, zero_arg,unsigned_arg)
{}
enum Item_result result_type () const { return INT_RESULT; }
enum_field_types type() const { return FIELD_TYPE_INT24;}
enum ha_base_keytype key_type() const
{ return unsigned_flag ? HA_KEYTYPE_UINT24 : HA_KEYTYPE_INT24; }
int store(const char *to,uint length,CHARSET_INFO *charset);
int store(double nr);
int store(longlong nr);
void reset(void) { ptr[0]=ptr[1]=ptr[2]=0; }
double val_real(void);
longlong val_int(void);
String *val_str(String*,String *);
bool send_binary(Protocol *protocol);
int cmp(const char *,const char*);
void sort_string(char *buff,uint length);
uint32 pack_length() const { return 3; }
void sql_type(String &str) const;
field_cast_enum field_cast_type() { return FIELD_CAST_MEDIUM; }
};
class Field_long :public Field_num {
public:
Field_long(char *ptr_arg, uint32 len_arg, uchar *null_ptr_arg,
uchar null_bit_arg,
enum utype unireg_check_arg, const char *field_name_arg,
struct st_table *table_arg,
bool zero_arg, bool unsigned_arg)
:Field_num(ptr_arg, len_arg, null_ptr_arg, null_bit_arg,
unireg_check_arg, field_name_arg, table_arg,
0, zero_arg,unsigned_arg)
{}
Field_long(uint32 len_arg,bool maybe_null_arg, const char *field_name_arg,
struct st_table *table_arg,bool unsigned_arg)
:Field_num((char*) 0, len_arg, maybe_null_arg ? (uchar*) "": 0,0,
NONE, field_name_arg, table_arg,0,0,unsigned_arg)
{}
enum Item_result result_type () const { return INT_RESULT; }
enum_field_types type() const { return FIELD_TYPE_LONG;}
enum ha_base_keytype key_type() const
{ return unsigned_flag ? HA_KEYTYPE_ULONG_INT : HA_KEYTYPE_LONG_INT; }
int store(const char *to,uint length,CHARSET_INFO *charset);
int store(double nr);
int store(longlong nr);
void reset(void) { ptr[0]=ptr[1]=ptr[2]=ptr[3]=0; }
double val_real(void);
longlong val_int(void);
bool send_binary(Protocol *protocol);
String *val_str(String*,String *);
int cmp(const char *,const char*);
void sort_string(char *buff,uint length);
uint32 pack_length() const { return 4; }
void sql_type(String &str) const;
field_cast_enum field_cast_type() { return FIELD_CAST_LONG; }
};
#ifdef HAVE_LONG_LONG
class Field_longlong :public Field_num {
public:
Field_longlong(char *ptr_arg, uint32 len_arg, uchar *null_ptr_arg,
uchar null_bit_arg,
enum utype unireg_check_arg, const char *field_name_arg,
struct st_table *table_arg,
bool zero_arg, bool unsigned_arg)
:Field_num(ptr_arg, len_arg, null_ptr_arg, null_bit_arg,
unireg_check_arg, field_name_arg, table_arg,
0, zero_arg,unsigned_arg)
{}
Field_longlong(uint32 len_arg,bool maybe_null_arg,
const char *field_name_arg,
struct st_table *table_arg, bool unsigned_arg)
:Field_num((char*) 0, len_arg, maybe_null_arg ? (uchar*) "": 0,0,
NONE, field_name_arg, table_arg,0,0,unsigned_arg)
{}
enum Item_result result_type () const { return INT_RESULT; }
enum_field_types type() const { return FIELD_TYPE_LONGLONG;}
enum ha_base_keytype key_type() const
{ return unsigned_flag ? HA_KEYTYPE_ULONGLONG : HA_KEYTYPE_LONGLONG; }
int store(const char *to,uint length,CHARSET_INFO *charset);
int store(double nr);
int store(longlong nr);
void reset(void) { ptr[0]=ptr[1]=ptr[2]=ptr[3]=ptr[4]=ptr[5]=ptr[6]=ptr[7]=0; }
double val_real(void);
longlong val_int(void);
String *val_str(String*,String *);
bool send_binary(Protocol *protocol);
int cmp(const char *,const char*);
void sort_string(char *buff,uint length);
uint32 pack_length() const { return 8; }
void sql_type(String &str) const;
bool store_for_compare() { return 1; }
field_cast_enum field_cast_type() { return FIELD_CAST_LONGLONG; }
};
#endif
class Field_float :public Field_num {
public:
Field_float(char *ptr_arg, uint32 len_arg, uchar *null_ptr_arg,
uchar null_bit_arg,
enum utype unireg_check_arg, const char *field_name_arg,
struct st_table *table_arg,
uint8 dec_arg,bool zero_arg,bool unsigned_arg)
:Field_num(ptr_arg, len_arg, null_ptr_arg, null_bit_arg,
unireg_check_arg, field_name_arg, table_arg,
dec_arg, zero_arg,unsigned_arg)
{}
Field_float(uint32 len_arg, bool maybe_null_arg, const char *field_name_arg,
struct st_table *table_arg, uint8 dec_arg)
:Field_num((char*) 0, len_arg, maybe_null_arg ? (uchar*) "": 0, (uint) 0,
NONE, field_name_arg, table_arg,dec_arg,0,0)
{}
enum_field_types type() const { return FIELD_TYPE_FLOAT;}
enum ha_base_keytype key_type() const { return HA_KEYTYPE_FLOAT; }
int store(const char *to,uint length,CHARSET_INFO *charset);
int store(double nr);
int store(longlong nr);
void reset(void) { bzero(ptr,sizeof(float)); }
double val_real(void);
longlong val_int(void);
String *val_str(String*,String *);
bool send_binary(Protocol *protocol);
int cmp(const char *,const char*);
void sort_string(char *buff,uint length);
uint32 pack_length() const { return sizeof(float); }
void sql_type(String &str) const;
field_cast_enum field_cast_type() { return FIELD_CAST_FLOAT; }
};
class Field_double :public Field_num {
public:
Field_double(char *ptr_arg, uint32 len_arg, uchar *null_ptr_arg,
uchar null_bit_arg,
enum utype unireg_check_arg, const char *field_name_arg,
struct st_table *table_arg,
uint8 dec_arg,bool zero_arg,bool unsigned_arg)
:Field_num(ptr_arg, len_arg, null_ptr_arg, null_bit_arg,
unireg_check_arg, field_name_arg, table_arg,
dec_arg, zero_arg,unsigned_arg)
{}
Field_double(uint32 len_arg, bool maybe_null_arg, const char *field_name_arg,
struct st_table *table_arg, uint8 dec_arg)
:Field_num((char*) 0, len_arg, maybe_null_arg ? (uchar*) "": 0, (uint) 0,
NONE, field_name_arg, table_arg,dec_arg,0,0)
{}
enum_field_types type() const { return FIELD_TYPE_DOUBLE;}
enum ha_base_keytype key_type() const { return HA_KEYTYPE_DOUBLE; }
int store(const char *to,uint length,CHARSET_INFO *charset);
int store(double nr);
int store(longlong nr);
void reset(void) { bzero(ptr,sizeof(double)); }
double val_real(void);
longlong val_int(void);
String *val_str(String*,String *);
bool send_binary(Protocol *protocol);
int cmp(const char *,const char*);
void sort_string(char *buff,uint length);
uint32 pack_length() const { return sizeof(double); }
void sql_type(String &str) const;
field_cast_enum field_cast_type() { return FIELD_CAST_DOUBLE; }
};
/* Everything saved in this will disapper. It will always return NULL */
class Field_null :public Field_str {
static uchar null[1];
public:
Field_null(char *ptr_arg, uint32 len_arg,
enum utype unireg_check_arg, const char *field_name_arg,
struct st_table *table_arg, CHARSET_INFO *cs)
:Field_str(ptr_arg, len_arg, null, 1,
unireg_check_arg, field_name_arg, table_arg, cs)
{}
enum_field_types type() const { return FIELD_TYPE_NULL;}
int store(const char *to, uint length, CHARSET_INFO *cs)
{ null[0]=1; return 0; }
int store(double nr) { null[0]=1; return 0; }
int store(longlong nr) { null[0]=1; return 0; }
void reset(void) {}
double val_real(void) { return 0.0;}
longlong val_int(void) { return 0;}
String *val_str(String *value,String *value2)
{ value2->length(0); return value2;}
int cmp(const char *a, const char *b) { return 0;}
void sort_string(char *buff, uint length) {}
uint32 pack_length() const { return 0; }
void sql_type(String &str) const;
uint size_of() const { return sizeof(*this); }
field_cast_enum field_cast_type() { return FIELD_CAST_NULL; }
};
class Field_timestamp :public Field_str {
public:
Field_timestamp(char *ptr_arg, uint32 len_arg,
enum utype unireg_check_arg, const char *field_name_arg,
struct st_table *table_arg,
CHARSET_INFO *cs);
enum_field_types type() const { return FIELD_TYPE_TIMESTAMP;}
enum ha_base_keytype key_type() const { return HA_KEYTYPE_ULONG_INT; }
enum Item_result cmp_type () const { return INT_RESULT; }
int store(const char *to,uint length,CHARSET_INFO *charset);
int store(double nr);
int store(longlong nr);
void reset(void) { ptr[0]=ptr[1]=ptr[2]=ptr[3]=0; }
double val_real(void);
longlong val_int(void);
String *val_str(String*,String *);
bool send_binary(Protocol *protocol);
int cmp(const char *,const char*);
void sort_string(char *buff,uint length);
uint32 pack_length() const { return 4; }
void sql_type(String &str) const;
bool store_for_compare() { return 1; }
bool zero_pack() const { return 0; }
void set_time();
virtual void set_default()
{
if (table->timestamp_field == this &&
unireg_check != TIMESTAMP_UN_FIELD)
set_time();
else
Field::set_default();
}
inline long get_timestamp()
{
#ifdef WORDS_BIGENDIAN
if (table->db_low_byte_first)
return sint4korr(ptr);
#endif
long tmp;
longget(tmp,ptr);
return tmp;
}
bool get_date(TIME *ltime,uint fuzzydate);
bool get_time(TIME *ltime);
field_cast_enum field_cast_type() { return FIELD_CAST_TIMESTAMP; }
void set_timestamp_offsets();
};
class Field_year :public Field_tiny {
public:
Field_year(char *ptr_arg, uint32 len_arg, uchar *null_ptr_arg,
uchar null_bit_arg,
enum utype unireg_check_arg, const char *field_name_arg,
struct st_table *table_arg)
:Field_tiny(ptr_arg, len_arg, null_ptr_arg, null_bit_arg,
unireg_check_arg, field_name_arg, table_arg, 1, 1)
{}
enum_field_types type() const { return FIELD_TYPE_YEAR;}
int store(const char *to,uint length,CHARSET_INFO *charset);
int store(double nr);
int store(longlong nr);
double val_real(void);
longlong val_int(void);
String *val_str(String*,String *);
bool send_binary(Protocol *protocol);
void sql_type(String &str) const;
bool store_for_compare() { return 1; }
field_cast_enum field_cast_type() { return FIELD_CAST_YEAR; }
};
class Field_date :public Field_str {
public:
Field_date(char *ptr_arg, uchar *null_ptr_arg, uchar null_bit_arg,
enum utype unireg_check_arg, const char *field_name_arg,
struct st_table *table_arg, CHARSET_INFO *cs)
:Field_str(ptr_arg, 10, null_ptr_arg, null_bit_arg,
unireg_check_arg, field_name_arg, table_arg, cs)
{}
Field_date(bool maybe_null_arg, const char *field_name_arg,
struct st_table *table_arg, CHARSET_INFO *cs)
:Field_str((char*) 0,10, maybe_null_arg ? (uchar*) "": 0,0,
NONE, field_name_arg, table_arg, cs) {}
enum_field_types type() const { return FIELD_TYPE_DATE;}
enum ha_base_keytype key_type() const { return HA_KEYTYPE_ULONG_INT; }
enum Item_result cmp_type () const { return INT_RESULT; }
int store(const char *to,uint length,CHARSET_INFO *charset);
int store(double nr);
int store(longlong nr);
void reset(void) { ptr[0]=ptr[1]=ptr[2]=ptr[3]=0; }
double val_real(void);
longlong val_int(void);
String *val_str(String*,String *);
bool send_binary(Protocol *protocol);
int cmp(const char *,const char*);
void sort_string(char *buff,uint length);
uint32 pack_length() const { return 4; }
void sql_type(String &str) const;
bool store_for_compare() { return 1; }
bool zero_pack() const { return 1; }
field_cast_enum field_cast_type() { return FIELD_CAST_DATE; }
};
class Field_newdate :public Field_str {
public:
Field_newdate(char *ptr_arg, uchar *null_ptr_arg, uchar null_bit_arg,
enum utype unireg_check_arg, const char *field_name_arg,
struct st_table *table_arg, CHARSET_INFO *cs)
:Field_str(ptr_arg, 10, null_ptr_arg, null_bit_arg,
unireg_check_arg, field_name_arg, table_arg, cs)
{}
enum_field_types type() const { return FIELD_TYPE_DATE;}
enum_field_types real_type() const { return FIELD_TYPE_NEWDATE; }
enum ha_base_keytype key_type() const { return HA_KEYTYPE_UINT24; }
enum Item_result cmp_type () const { return INT_RESULT; }
int store(const char *to,uint length,CHARSET_INFO *charset);
int store(double nr);
int store(longlong nr);
void store_time(TIME *ltime,timestamp_type type);
void reset(void) { ptr[0]=ptr[1]=ptr[2]=0; }
double val_real(void);
longlong val_int(void);
String *val_str(String*,String *);
bool send_binary(Protocol *protocol);
int cmp(const char *,const char*);
void sort_string(char *buff,uint length);
uint32 pack_length() const { return 3; }
void sql_type(String &str) const;
bool store_for_compare() { return 1; }
bool zero_pack() const { return 1; }
bool get_date(TIME *ltime,uint fuzzydate);
bool get_time(TIME *ltime);
field_cast_enum field_cast_type() { return FIELD_CAST_NEWDATE; }
};
class Field_time :public Field_str {
public:
Field_time(char *ptr_arg, uchar *null_ptr_arg, uchar null_bit_arg,
enum utype unireg_check_arg, const char *field_name_arg,
struct st_table *table_arg, CHARSET_INFO *cs)
:Field_str(ptr_arg, 8, null_ptr_arg, null_bit_arg,
unireg_check_arg, field_name_arg, table_arg, cs)
{}
Field_time(bool maybe_null_arg, const char *field_name_arg,
struct st_table *table_arg, CHARSET_INFO *cs)
:Field_str((char*) 0,8, maybe_null_arg ? (uchar*) "": 0,0,
NONE, field_name_arg, table_arg, cs) {}
enum_field_types type() const { return FIELD_TYPE_TIME;}
enum ha_base_keytype key_type() const { return HA_KEYTYPE_INT24; }
enum Item_result cmp_type () const { return INT_RESULT; }
int store(const char *to,uint length,CHARSET_INFO *charset);
int store(double nr);
int store(longlong nr);
void reset(void) { ptr[0]=ptr[1]=ptr[2]=0; }
double val_real(void);
longlong val_int(void);
String *val_str(String*,String *);
bool send_binary(Protocol *protocol);
bool get_time(TIME *ltime);
int cmp(const char *,const char*);
void sort_string(char *buff,uint length);
uint32 pack_length() const { return 3; }
void sql_type(String &str) const;
bool store_for_compare() { return 1; }
bool zero_pack() const { return 1; }
field_cast_enum field_cast_type() { return FIELD_CAST_TIME; }
};
class Field_datetime :public Field_str {
public:
Field_datetime(char *ptr_arg, uchar *null_ptr_arg, uchar null_bit_arg,
enum utype unireg_check_arg, const char *field_name_arg,
struct st_table *table_arg, CHARSET_INFO *cs)
:Field_str(ptr_arg, 19, null_ptr_arg, null_bit_arg,
unireg_check_arg, field_name_arg, table_arg, cs)
{}
Field_datetime(bool maybe_null_arg, const char *field_name_arg,
struct st_table *table_arg, CHARSET_INFO *cs)
:Field_str((char*) 0,19, maybe_null_arg ? (uchar*) "": 0,0,
NONE, field_name_arg, table_arg, cs) {}
enum_field_types type() const { return FIELD_TYPE_DATETIME;}
#ifdef HAVE_LONG_LONG
enum ha_base_keytype key_type() const { return HA_KEYTYPE_ULONGLONG; }
#endif
enum Item_result cmp_type () const { return INT_RESULT; }
int store(const char *to,uint length,CHARSET_INFO *charset);
int store(double nr);
int store(longlong nr);
void store_time(TIME *ltime,timestamp_type type);
void reset(void) { ptr[0]=ptr[1]=ptr[2]=ptr[3]=ptr[4]=ptr[5]=ptr[6]=ptr[7]=0; }
double val_real(void);
longlong val_int(void);
String *val_str(String*,String *);
bool send_binary(Protocol *protocol);
int cmp(const char *,const char*);
void sort_string(char *buff,uint length);
uint32 pack_length() const { return 8; }
void sql_type(String &str) const;
bool store_for_compare() { return 1; }
bool zero_pack() const { return 1; }
bool get_date(TIME *ltime,uint fuzzydate);
bool get_time(TIME *ltime);
field_cast_enum field_cast_type() { return FIELD_CAST_DATETIME; }
};
class Field_string :public Field_str {
public:
Field_string(char *ptr_arg, uint32 len_arg,uchar *null_ptr_arg,
uchar null_bit_arg,
enum utype unireg_check_arg, const char *field_name_arg,
struct st_table *table_arg, CHARSET_INFO *cs)
:Field_str(ptr_arg, len_arg, null_ptr_arg, null_bit_arg,
unireg_check_arg, field_name_arg, table_arg,cs) {};
Field_string(uint32 len_arg,bool maybe_null_arg, const char *field_name_arg,
struct st_table *table_arg, CHARSET_INFO *cs)
:Field_str((char*) 0,len_arg, maybe_null_arg ? (uchar*) "": 0,0,
NONE, field_name_arg, table_arg, cs) {};
enum_field_types type() const
{
return ((table && table->db_create_options & HA_OPTION_PACK_RECORD &&
field_length >= 4) ?
FIELD_TYPE_VAR_STRING : FIELD_TYPE_STRING);
}
enum ha_base_keytype key_type() const
{ return binary() ? HA_KEYTYPE_BINARY : HA_KEYTYPE_TEXT; }
bool zero_pack() const { return 0; }
void reset(void) { charset()->cset->fill(charset(),ptr,field_length,' '); }
int store(const char *to,uint length,CHARSET_INFO *charset);
int store(double nr);
int store(longlong nr);
double val_real(void);
longlong val_int(void);
String *val_str(String*,String *);
int cmp(const char *,const char*);
void sort_string(char *buff,uint length);
void sql_type(String &str) const;
char *pack(char *to, const char *from, uint max_length=~(uint) 0);
const char *unpack(char* to, const char *from);
int pack_cmp(const char *a,const char *b,uint key_length);
int pack_cmp(const char *b,uint key_length);
uint packed_col_length(const char *to, uint length);
uint max_packed_col_length(uint max_length);
uint size_of() const { return sizeof(*this); }
enum_field_types real_type() const { return FIELD_TYPE_STRING; }
bool has_charset(void) const
{ return charset() == &my_charset_bin ? FALSE : TRUE; }
field_cast_enum field_cast_type() { return FIELD_CAST_STRING; }
};
class Field_varstring :public Field_str {
public:
Field_varstring(char *ptr_arg, uint32 len_arg,uchar *null_ptr_arg,
uchar null_bit_arg,
enum utype unireg_check_arg, const char *field_name_arg,
struct st_table *table_arg, CHARSET_INFO *cs)
:Field_str(ptr_arg, len_arg, null_ptr_arg, null_bit_arg,
unireg_check_arg, field_name_arg, table_arg, cs)
{}
Field_varstring(uint32 len_arg,bool maybe_null_arg,
const char *field_name_arg,
struct st_table *table_arg, CHARSET_INFO *cs)
:Field_str((char*) 0,len_arg, maybe_null_arg ? (uchar*) "": 0,0,
NONE, field_name_arg, table_arg, cs)
{}
enum_field_types type() const { return FIELD_TYPE_VAR_STRING; }
enum ha_base_keytype key_type() const
{ return binary() ? HA_KEYTYPE_VARBINARY : HA_KEYTYPE_VARTEXT; }
bool zero_pack() const { return 0; }
void reset(void) { bzero(ptr,field_length+2); }
uint32 pack_length() const { return (uint32) field_length+2; }
uint32 key_length() const { return (uint32) field_length; }
int store(const char *to,uint length,CHARSET_INFO *charset);
int store(double nr);
int store(longlong nr);
double val_real(void);
longlong val_int(void);
String *val_str(String*,String *);
int cmp(const char *,const char*);
void sort_string(char *buff,uint length);
void get_key_image(char *buff,uint length, CHARSET_INFO *cs, imagetype type);
void set_key_image(char *buff,uint length, CHARSET_INFO *cs);
void sql_type(String &str) const;
char *pack(char *to, const char *from, uint max_length=~(uint) 0);
const char *unpack(char* to, const char *from);
int pack_cmp(const char *a, const char *b, uint key_length);
int pack_cmp(const char *b, uint key_length);
uint packed_col_length(const char *to, uint length);
uint max_packed_col_length(uint max_length);
uint size_of() const { return sizeof(*this); }
enum_field_types real_type() const { return FIELD_TYPE_VAR_STRING; }
bool has_charset(void) const
{ return charset() == &my_charset_bin ? FALSE : TRUE; }
field_cast_enum field_cast_type() { return FIELD_CAST_VARSTRING; }
};
class Field_blob :public Field_str {
protected:
uint packlength;
String value; // For temporaries
public:
Field_blob(char *ptr_arg, uchar *null_ptr_arg, uchar null_bit_arg,
enum utype unireg_check_arg, const char *field_name_arg,
struct st_table *table_arg,uint blob_pack_length,
CHARSET_INFO *cs);
Field_blob(uint32 len_arg,bool maybe_null_arg, const char *field_name_arg,
struct st_table *table_arg, CHARSET_INFO *cs)
:Field_str((char*) 0,len_arg, maybe_null_arg ? (uchar*) "": 0,0,
NONE, field_name_arg, table_arg, cs),
packlength(4)
{
flags|= BLOB_FLAG;
}
enum_field_types type() const { return FIELD_TYPE_BLOB;}
enum ha_base_keytype key_type() const
{ return binary() ? HA_KEYTYPE_VARBINARY : HA_KEYTYPE_VARTEXT; }
int store(const char *to,uint length,CHARSET_INFO *charset);
int store(double nr);
int store(longlong nr);
double val_real(void);
longlong val_int(void);
String *val_str(String*,String *);
int cmp(const char *,const char*);
int cmp(const char *a, uint32 a_length, const char *b, uint32 b_length);
int cmp_offset(uint offset);
int cmp_binary(const char *a,const char *b, uint32 max_length=~0L);
int cmp_binary_offset(uint row_offset);
int key_cmp(const byte *,const byte*);
int key_cmp(const byte *str, uint length);
uint32 key_length() const { return 0; }
void sort_string(char *buff,uint length);
uint32 pack_length() const
{ return (uint32) (packlength+table->blob_ptr_size); }
inline uint32 max_data_length() const
{
return (uint32) (((ulonglong) 1 << (packlength*8)) -1);
}
void reset(void) { bzero(ptr, packlength+sizeof(char*)); }
void reset_fields() { bzero((char*) &value,sizeof(value)); }
void store_length(uint32 number);
inline uint32 get_length(uint row_offset=0)
{ return get_length(ptr+row_offset); }
uint32 get_length(const char *ptr);
inline void get_ptr(char **str)
{
memcpy_fixed(str,ptr+packlength,sizeof(char*));
}
inline void set_ptr(char *length,char *data)
{
memcpy(ptr,length,packlength);
memcpy_fixed(ptr+packlength,&data,sizeof(char*));
}
inline void set_ptr(uint32 length,char *data)
{
store_length(length);
memcpy_fixed(ptr+packlength,&data,sizeof(char*));
}
void get_key_image(char *buff,uint length, CHARSET_INFO *cs, imagetype type);
void set_key_image(char *buff,uint length, CHARSET_INFO *cs);
void sql_type(String &str) const;
inline bool copy()
{ char *tmp;
get_ptr(&tmp);
if (value.copy(tmp,get_length(),charset()))
{
Field_blob::reset();
return 1;
}
tmp=(char*) value.ptr(); memcpy_fixed(ptr+packlength,&tmp,sizeof(char*));
return 0;
}
char *pack(char *to, const char *from, uint max_length= ~(uint) 0);
const char *unpack(char *to, const char *from);
char *pack_key(char *to, const char *from, uint max_length);
char *pack_key_from_key_image(char* to, const char *from, uint max_length);
int pack_cmp(const char *a, const char *b, uint key_length);
int pack_cmp(const char *b, uint key_length);
uint packed_col_length(const char *col_ptr, uint length);
uint max_packed_col_length(uint max_length);
void free() { value.free(); }
inline void clear_temporary() { bzero((char*) &value,sizeof(value)); }
friend void field_conv(Field *to,Field *from);
uint size_of() const { return sizeof(*this); }
bool has_charset(void) const
{ return charset() == &my_charset_bin ? FALSE : TRUE; }
field_cast_enum field_cast_type() { return FIELD_CAST_BLOB; }
};
#ifdef HAVE_SPATIAL
class Field_geom :public Field_blob {
public:
enum geometry_type geom_type;
Field_geom(char *ptr_arg, uchar *null_ptr_arg, uint null_bit_arg,
enum utype unireg_check_arg, const char *field_name_arg,
struct st_table *table_arg,uint blob_pack_length,
enum geometry_type geom_type_arg)
:Field_blob(ptr_arg, null_ptr_arg, null_bit_arg, unireg_check_arg,
field_name_arg, table_arg, blob_pack_length,&my_charset_bin)
{ geom_type= geom_type_arg; }
Field_geom(uint32 len_arg,bool maybe_null_arg, const char *field_name_arg,
struct st_table *table_arg, enum geometry_type geom_type_arg)
:Field_blob(len_arg, maybe_null_arg, field_name_arg,
table_arg, &my_charset_bin)
{ geom_type= geom_type_arg; }
enum ha_base_keytype key_type() const { return HA_KEYTYPE_VARBINARY; }
enum_field_types type() const { return FIELD_TYPE_GEOMETRY; }
void sql_type(String &str) const;
int store(const char *to, uint length, CHARSET_INFO *charset);
int store(double nr) { return 1; }
int store(longlong nr) { return 1; }
void get_key_image(char *buff,uint length, CHARSET_INFO *cs,imagetype type);
void set_key_image(char *buff,uint length, CHARSET_INFO *cs);
field_cast_enum field_cast_type() { return FIELD_CAST_GEOM; }
};
#endif /*HAVE_SPATIAL*/
class Field_enum :public Field_str {
protected:
uint packlength;
public:
TYPELIB *typelib;
Field_enum(char *ptr_arg, uint32 len_arg, uchar *null_ptr_arg,
uchar null_bit_arg,
enum utype unireg_check_arg, const char *field_name_arg,
struct st_table *table_arg,uint packlength_arg,
TYPELIB *typelib_arg,
CHARSET_INFO *charset_arg)
:Field_str(ptr_arg, len_arg, null_ptr_arg, null_bit_arg,
unireg_check_arg, field_name_arg, table_arg, charset_arg),
packlength(packlength_arg),typelib(typelib_arg)
{
flags|=ENUM_FLAG;
}
enum_field_types type() const { return FIELD_TYPE_STRING; }
enum Item_result cmp_type () const { return INT_RESULT; }
enum ha_base_keytype key_type() const;
int store(const char *to,uint length,CHARSET_INFO *charset);
int store(double nr);
int store(longlong nr);
void reset() { bzero(ptr,packlength); }
double val_real(void);
longlong val_int(void);
String *val_str(String*,String *);
int cmp(const char *,const char*);
void sort_string(char *buff,uint length);
uint32 pack_length() const { return (uint32) packlength; }
void store_type(ulonglong value);
void sql_type(String &str) const;
uint size_of() const { return sizeof(*this); }
enum_field_types real_type() const { return FIELD_TYPE_ENUM; }
virtual bool zero_pack() const { return 0; }
bool optimize_range(uint idx) { return 0; }
bool eq_def(Field *field);
bool has_charset(void) const { return TRUE; }
field_cast_enum field_cast_type() { return FIELD_CAST_ENUM; }
};
class Field_set :public Field_enum {
public:
Field_set(char *ptr_arg, uint32 len_arg, uchar *null_ptr_arg,
uchar null_bit_arg,
enum utype unireg_check_arg, const char *field_name_arg,
struct st_table *table_arg,uint32 packlength_arg,
TYPELIB *typelib_arg, CHARSET_INFO *charset_arg)
:Field_enum(ptr_arg, len_arg, null_ptr_arg, null_bit_arg,
unireg_check_arg, field_name_arg,
table_arg, packlength_arg,
typelib_arg,charset_arg)
{
flags=(flags & ~ENUM_FLAG) | SET_FLAG;
}
int store(const char *to,uint length,CHARSET_INFO *charset);
int store(double nr) { return Field_set::store((longlong) nr); }
int store(longlong nr);
virtual bool zero_pack() const { return 1; }
String *val_str(String*,String *);
void sql_type(String &str) const;
enum_field_types real_type() const { return FIELD_TYPE_SET; }
bool has_charset(void) const { return TRUE; }
field_cast_enum field_cast_type() { return FIELD_CAST_SET; }
};
/*
Create field class for CREATE TABLE
*/
class create_field :public Sql_alloc {
public:
const char *field_name;
const char *change; // If done with alter table
const char *after; // Put column after this one
LEX_STRING comment; // Comment for field
Item *def; // Default value
enum enum_field_types sql_type;
uint32 length;
uint decimals,flags,pack_length;
Field::utype unireg_check;
TYPELIB *interval; // Which interval to use
CHARSET_INFO *charset;
Field::geometry_type geom_type;
Field *field; // For alter table
uint8 row,col,sc_length,interval_id; // For rea_create_table
uint offset,pack_flag;
create_field() :after(0) {}
create_field(Field *field, Field *orig_field);
void create_length_to_internal_length(void);
};
/*
A class for sending info to the client
*/
class Send_field {
public:
const char *db_name;
const char *table_name,*org_table_name;
const char *col_name,*org_col_name;
ulong length;
uint charsetnr, flags, decimals;
enum_field_types type;
Send_field() {}
};
/*
A class for quick copying data to fields
*/
class Copy_field :public Sql_alloc {
void (*get_copy_func(Field *to,Field *from))(Copy_field *);
public:
char *from_ptr,*to_ptr;
uchar *from_null_ptr,*to_null_ptr;
my_bool *null_row;
uint from_bit,to_bit;
uint from_length,to_length;
Field *from_field,*to_field;
String tmp; // For items
Copy_field() {}
~Copy_field() {}
void set(Field *to,Field *from,bool save); // Field to field
void set(char *to,Field *from); // Field to string
void (*do_copy)(Copy_field *);
void (*do_copy2)(Copy_field *); // Used to handle null values
};
Field *make_field(char *ptr, uint32 field_length,
uchar *null_pos, uchar null_bit,
uint pack_flag, enum_field_types field_type,
CHARSET_INFO *cs,
Field::geometry_type geom_type,
Field::utype unireg_check,
TYPELIB *interval, const char *field_name,
struct st_table *table);
uint pack_length_to_packflag(uint type);
uint32 calc_pack_length(enum_field_types type,uint32 length);
int set_field_to_null(Field *field);
int set_field_to_null_with_conversions(Field *field, bool no_conversions);
bool test_if_int(const char *str, int length, const char *int_end,
CHARSET_INFO *cs);
/*
The following are for the interface with the .frm file
*/
#define FIELDFLAG_DECIMAL 1
#define FIELDFLAG_BINARY 1 // Shares same flag
#define FIELDFLAG_NUMBER 2
#define FIELDFLAG_ZEROFILL 4
#define FIELDFLAG_PACK 120 // Bits used for packing
#define FIELDFLAG_INTERVAL 256
#define FIELDFLAG_BITFIELD 512 // mangled with dec!
#define FIELDFLAG_BLOB 1024 // mangled with dec!
#define FIELDFLAG_GEOM 2048
#define FIELDFLAG_LEFT_FULLSCREEN 8192
#define FIELDFLAG_RIGHT_FULLSCREEN 16384
#define FIELDFLAG_FORMAT_NUMBER 16384 // predit: ###,,## in output
#define FIELDFLAG_SUM ((uint) 32768)// predit: +#fieldflag
#define FIELDFLAG_MAYBE_NULL ((uint) 32768)// sql
#define FIELDFLAG_PACK_SHIFT 3
#define FIELDFLAG_DEC_SHIFT 8
#define FIELDFLAG_MAX_DEC 31
#define FIELDFLAG_NUM_SCREEN_TYPE 0x7F01
#define FIELDFLAG_ALFA_SCREEN_TYPE 0x7800
#define FIELD_SORT_REVERSE 16384
#define MTYP_TYPENR(type) (type & 127) /* Remove bits from type */
#define f_is_dec(x) ((x) & FIELDFLAG_DECIMAL)
#define f_is_num(x) ((x) & FIELDFLAG_NUMBER)
#define f_is_zerofill(x) ((x) & FIELDFLAG_ZEROFILL)
#define f_is_packed(x) ((x) & FIELDFLAG_PACK)
#define f_packtype(x) (((x) >> FIELDFLAG_PACK_SHIFT) & 15)
#define f_decimals(x) ((uint8) (((x) >> FIELDFLAG_DEC_SHIFT) & FIELDFLAG_MAX_DEC))
#define f_is_alpha(x) (!f_is_num(x))
#define f_is_binary(x) ((x) & FIELDFLAG_BINARY) // 4.0- compatibility
#define f_is_enum(x) ((x) & FIELDFLAG_INTERVAL)
#define f_is_bitfield(x) ((x) & FIELDFLAG_BITFIELD)
#define f_is_blob(x) (((x) & (FIELDFLAG_BLOB | FIELDFLAG_NUMBER)) == FIELDFLAG_BLOB)
#define f_is_geom(x) ((x) & FIELDFLAG_GEOM)
#define f_is_equ(x) ((x) & (1+2+FIELDFLAG_PACK+31*256))
#define f_settype(x) (((int) x) << FIELDFLAG_PACK_SHIFT)
#define f_maybe_null(x) (x & FIELDFLAG_MAYBE_NULL)
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