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jimw@mysql.com
2005-02-04 12:01:30 -08:00
parent 8c8553af81
commit f98a2c27a1
1 changed files with 154 additions and 86 deletions
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240
sql/field.h
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@ -37,11 +37,7 @@ class Field
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 SAFEMALLOC
bfill(ptr_arg, size, 0x8F);
#endif
}
static void operator delete(void *ptr_arg, size_t size) { TRASH(ptr_arg, size); }
char *ptr; // Position to field in record
uchar *null_ptr; // Byte where null_bit is
@ -51,7 +47,7 @@ public:
*/
struct st_table *table; // Pointer for table
struct st_table *orig_table; // Pointer to original table
const char *table_name,*field_name;
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 */
@ -84,7 +80,7 @@ public:
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
FIELD_CAST_GEOM, FIELD_CAST_ENUM, FIELD_CAST_SET, FIELD_CAST_BIT
};
utype unireg_check;
@ -100,7 +96,7 @@ public:
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 int store_time(TIME *ltime, timestamp_type t_type);
virtual double val_real(void)=0;
virtual longlong val_int(void)=0;
inline String *val_str(String *str) { return val_str(str, str); }
@ -117,16 +113,22 @@ public:
This trickery is used to decrease a number of malloc calls.
*/
virtual String *val_str(String*,String *)=0;
String *val_int_as_str(String *val_buffer, my_bool unsigned_flag);
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; }
bool eq(Field *field)
{
return (ptr == field->ptr && null_ptr == field->null_ptr &&
null_bit == field->null_bit);
}
virtual bool eq_def(Field *field);
virtual uint32 pack_length() const { return (uint32) field_length; }
virtual uint32 pack_length_in_rec() const { return pack_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 -
my_ptrdiff_t offset = (my_ptrdiff_t) (table->s->default_values -
table->record[0]);
memcpy(ptr, ptr + offset, pack_length());
if (null_ptr)
@ -143,10 +145,9 @@ public:
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()); }
int cmp_offset(uint row_offset) { return cmp(ptr,ptr+row_offset); }
int cmp_binary_offset(uint row_offset)
{ return cmp_binary(ptr, ptr+row_offset); };
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)
@ -176,7 +177,7 @@ public:
{ 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 make_field(Send_field *);
virtual void sort_string(char *buff,uint length)=0;
virtual bool optimize_range(uint idx, uint part);
/*
@ -188,28 +189,11 @@ public:
*/
virtual bool can_be_compared_as_longlong() const { return FALSE; }
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)
virtual Field *new_field(MEM_ROOT *root, struct st_table *new_table);
virtual Field *new_key_field(MEM_ROOT *root, struct st_table *new_table,
char *new_ptr, uchar *new_null_ptr,
uint new_null_bit);
virtual 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;
}
@ -224,11 +208,10 @@ public:
{ 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); }
virtual void get_key_image(char *buff, uint length, imagetype type)
{ get_image(buff,length, &my_charset_bin); }
virtual void set_key_image(char *buff,uint length)
{ set_image(buff,length, &my_charset_bin); }
inline longlong val_int_offset(uint row_offset)
{
ptr+=row_offset;
@ -236,6 +219,17 @@ public:
ptr-=row_offset;
return tmp;
}
inline String *val_str(String *str, char *new_ptr)
{
char *old_ptr= ptr;
ptr= new_ptr;
val_str(str);
ptr= old_ptr;
return str;
}
bool quote_data(String *unquoted_string);
bool needs_quotes(void);
virtual bool send_binary(Protocol *protocol);
virtual char *pack(char* to, const char *from, uint max_length=~(uint) 0)
{
@ -267,9 +261,11 @@ public:
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)
virtual int pack_cmp(const char *a,const char *b, uint key_length_arg,
my_bool insert_or_update)
{ return cmp(a,b); }
virtual int pack_cmp(const char *b, uint key_length_arg)
virtual int pack_cmp(const char *b, uint key_length_arg,
my_bool insert_or_update)
{ return cmp(ptr,b); }
uint offset(); // Should be inline ...
void copy_from_tmp(int offset);
@ -281,6 +277,8 @@ public:
virtual void set_charset(CHARSET_INFO *charset) { }
bool set_warning(const unsigned int level, const unsigned int code,
int cuted_increment);
bool check_int(const char *str, int length, const char *int_end,
CHARSET_INFO *cs);
void set_datetime_warning(const uint level, const uint code,
const char *str, uint str_len,
timestamp_type ts_type, int cuted_increment);
@ -360,7 +358,6 @@ public:
int store(double nr);
int store(longlong nr)=0;
int store(const char *to,uint length,CHARSET_INFO *cs)=0;
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; }
@ -719,7 +716,7 @@ public:
if ((*null_value= is_null()))
return 0;
#ifdef WORDS_BIGENDIAN
if (table->db_low_byte_first)
if (table->s->db_low_byte_first)
return sint4korr(ptr);
#endif
long tmp;
@ -803,7 +800,7 @@ public:
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);
int 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);
@ -836,6 +833,7 @@ public:
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_time(TIME *ltime, timestamp_type type);
int store(const char *to,uint length,CHARSET_INFO *charset);
int store(double nr);
int store(longlong nr);
@ -876,7 +874,7 @@ public:
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);
int 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);
@ -909,9 +907,11 @@ public:
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);
return ((orig_table &&
orig_table->s->db_create_options & HA_OPTION_PACK_RECORD &&
field_length >= 4) &&
orig_table->s->frm_version < FRM_VER_TRUE_VARCHAR ?
MYSQL_TYPE_VAR_STRING : MYSQL_TYPE_STRING);
}
enum ha_base_keytype key_type() const
{ return binary() ? HA_KEYTYPE_BINARY : HA_KEYTYPE_TEXT; }
@ -928,8 +928,9 @@ public:
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);
int pack_cmp(const char *a,const char *b,uint key_length,
my_bool insert_or_update);
int pack_cmp(const char *b,uint key_length,my_bool insert_or_update);
uint packed_col_length(const char *to, uint length);
uint max_packed_col_length(uint max_length);
uint size_of() const { return sizeof(*this); }
@ -937,31 +938,43 @@ public:
bool has_charset(void) const
{ return charset() == &my_charset_bin ? FALSE : TRUE; }
field_cast_enum field_cast_type() { return FIELD_CAST_STRING; }
Field *new_field(MEM_ROOT *root, struct st_table *new_table);
};
class Field_varstring :public Field_str {
public:
Field_varstring(char *ptr_arg, uint32 len_arg,uchar *null_ptr_arg,
/* Store number of bytes used to store length (1 or 2) */
uint32 length_bytes;
Field_varstring(char *ptr_arg,
uint32 len_arg, uint length_bytes_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)
{}
unireg_check_arg, field_name_arg, table_arg, cs),
length_bytes(length_bytes_arg)
{
if (table)
table->s->varchar_fields++;
}
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)
{}
NONE, field_name_arg, table_arg, cs),
length_bytes(len_arg < 256 ? 1 :2)
{
if (table)
table->s->varchar_fields++;
}
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; }
enum_field_types type() const { return MYSQL_TYPE_VARCHAR; }
enum ha_base_keytype key_type() const;
bool zero_pack() const { return 0; }
void reset(void) { bzero(ptr,field_length+2); }
uint32 pack_length() const { return (uint32) field_length+2; }
void reset(void) { bzero(ptr,field_length+length_bytes); }
uint32 pack_length() const { return (uint32) field_length+length_bytes; }
uint32 key_length() const { return (uint32) field_length; }
int store(const char *to,uint length,CHARSET_INFO *charset);
int store(longlong nr);
@ -971,21 +984,31 @@ public:
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 get_key_image(char *buff,uint length, imagetype type);
void set_key_image(char *buff,uint length);
void sql_type(String &str) const;
char *pack(char *to, const char *from, uint max_length=~(uint) 0);
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);
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);
const char *unpack_key(char* to, const char *from, uint max_length);
int pack_cmp(const char *a, const char *b, uint key_length,
my_bool insert_or_update);
int pack_cmp(const char *b, uint key_length,my_bool insert_or_update);
int cmp_binary(const char *a,const char *b, uint32 max_length=~0L);
int key_cmp(const byte *,const byte*);
int key_cmp(const byte *str, uint 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; }
enum_field_types real_type() const { return MYSQL_TYPE_VARCHAR; }
bool has_charset(void) const
{ return charset() == &my_charset_bin ? FALSE : TRUE; }
field_cast_enum field_cast_type() { return FIELD_CAST_VARSTRING; }
Field *new_field(MEM_ROOT *root, struct st_table *new_table);
Field *new_key_field(MEM_ROOT *root, struct st_table *new_table,
char *new_ptr, uchar *new_null_ptr,
uint new_null_bit);
};
@ -1008,7 +1031,7 @@ public:
}
enum_field_types type() const { return FIELD_TYPE_BLOB;}
enum ha_base_keytype key_type() const
{ return binary() ? HA_KEYTYPE_VARBINARY : HA_KEYTYPE_VARTEXT; }
{ return binary() ? HA_KEYTYPE_VARBINARY2 : HA_KEYTYPE_VARTEXT2; }
int store(const char *to,uint length,CHARSET_INFO *charset);
int store(double nr);
int store(longlong nr);
@ -1017,15 +1040,13 @@ public:
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); }
{ return (uint32) (packlength+table->s->blob_ptr_size); }
inline uint32 max_data_length() const
{
return (uint32) (((ulonglong) 1 << (packlength*8)) -1);
@ -1051,8 +1072,8 @@ public:
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 get_key_image(char *buff,uint length, imagetype type);
void set_key_image(char *buff,uint length);
void sql_type(String &str) const;
inline bool copy()
{ char *tmp;
@ -1066,12 +1087,13 @@ public:
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);
const char *unpack(char *to, const char *from);
const char *unpack_key(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);
int pack_cmp(const char *a, const char *b, uint key_length,
my_bool insert_or_update);
int pack_cmp(const char *b, uint key_length,my_bool insert_or_update);
uint packed_col_length(const char *col_ptr, uint length);
uint max_packed_col_length(uint max_length);
void free() { value.free(); }
@ -1084,6 +1106,7 @@ public:
uint32 max_length();
};
#ifdef HAVE_SPATIAL
class Field_geom :public Field_blob {
public:
@ -1101,19 +1124,19 @@ public:
: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 ha_base_keytype key_type() const { return HA_KEYTYPE_VARBINARY2; }
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);
void get_key_image(char *buff,uint length,imagetype type);
field_cast_enum field_cast_type() { return FIELD_CAST_GEOM; }
};
#endif /*HAVE_SPATIAL*/
class Field_enum :public Field_str {
protected:
uint packlength;
@ -1182,6 +1205,52 @@ public:
};
class Field_bit :public Field {
public:
uchar *bit_ptr; // position in record where 'uneven' bits store
uchar bit_ofs; // offset to 'uneven' high bits
uint bit_len; // number of 'uneven' high bits
Field_bit(char *ptr_arg, uint32 len_arg, uchar *null_ptr_arg,
uchar null_bit_arg, uchar *bit_ptr_arg, uchar bit_ofs_arg,
enum utype unireg_check_arg, const char *field_name_arg,
struct st_table *table_arg);
enum_field_types type() const { return FIELD_TYPE_BIT; }
enum ha_base_keytype key_type() const { return HA_KEYTYPE_BIT; }
uint32 key_length() const { return (uint32) field_length + (bit_len > 0); }
uint32 max_length() { return (uint32) field_length + (bit_len > 0); }
uint size_of() const { return sizeof(*this); }
Item_result result_type () const { return INT_RESULT; }
void reset(void) { bzero(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 *a, const char *b)
{ return cmp_binary(a, b); }
int key_cmp(const byte *a, const byte *b)
{ return cmp_binary((char *) a, (char *) b); }
int key_cmp(const byte *str, uint length);
int cmp_offset(uint row_offset);
void get_key_image(char *buff, uint length, imagetype type);
void set_key_image(char *buff, uint length)
{ Field_bit::store(buff, length, &my_charset_bin); }
void sort_string(char *buff, uint length)
{ get_key_image(buff, length, itRAW); }
uint32 pack_length() const
{ return (uint32) field_length + (bit_len > 0); }
uint32 pack_length_in_rec() const { return field_length; }
void sql_type(String &str) const;
field_cast_enum field_cast_type() { return FIELD_CAST_BIT; }
char *pack(char *to, const char *from, uint max_length=~(uint) 0);
const char *unpack(char* to, const char *from);
Field *new_key_field(MEM_ROOT *root, struct st_table *new_table,
char *new_ptr, uchar *new_null_ptr,
uint new_null_bit);
};
/*
Create field class for CREATE TABLE
*/
@ -1194,8 +1263,8 @@ public:
LEX_STRING comment; // Comment for field
Item *def; // Default value
enum enum_field_types sql_type;
uint32 length;
uint decimals,flags,pack_length;
ulong length;
uint decimals, flags, pack_length, key_length;
Field::utype unireg_check;
TYPELIB *interval; // Which interval to use
List<String> interval_list;
@ -1260,11 +1329,10 @@ Field *make_field(char *ptr, uint32 field_length,
TYPELIB *interval, const char *field_name,
struct st_table *table);
uint pack_length_to_packflag(uint type);
enum_field_types get_blob_type_from_length(ulong length);
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);
bool field_types_to_be_kept(enum_field_types field_type);
/*
@ -1284,6 +1352,7 @@ bool field_types_to_be_kept(enum_field_types field_type);
#define FIELDFLAG_LEFT_FULLSCREEN 8192
#define FIELDFLAG_RIGHT_FULLSCREEN 16384
#define FIELDFLAG_FORMAT_NUMBER 16384 // predit: ###,,## in output
#define FIELDFLAG_NO_DEFAULT 16384 /* sql */
#define FIELDFLAG_SUM ((uint) 32768)// predit: +#fieldflag
#define FIELDFLAG_MAYBE_NULL ((uint) 32768)// sql
#define FIELDFLAG_PACK_SHIFT 3
@ -1292,8 +1361,6 @@ bool field_types_to_be_kept(enum_field_types field_type);
#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)
@ -1311,3 +1378,4 @@ bool field_types_to_be_kept(enum_field_types field_type);
#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)
#define f_no_default(x) (x & FIELDFLAG_NO_DEFAULT)