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b11f1d0c97
Bug#4968 ""Stored procedure crash if cursor opened on altered table"
Bug#6895 "Prepared Statements: ALTER TABLE DROP COLUMN does nothing"
Bug#19182 "CREATE TABLE bar (m INT) SELECT n FROM foo; doesn't work from
stored procedure."
Bug#19733 "Repeated alter, or repeated create/drop, fails"
Bug#22060 "ALTER TABLE x AUTO_INCREMENT=y in SP crashes server"
Bug#24879 "Prepared Statements: CREATE TABLE (UTF8 KEY) produces a
growing key length" (this bug is not fixed in 5.0)
Re-execution of CREATE DATABASE, CREATE TABLE and ALTER TABLE
statements in stored routines or as prepared statements caused
incorrect results (and crashes in versions prior to 5.0.25).
In 5.1 the problem occured only for CREATE DATABASE, CREATE TABLE
SELECT and CREATE TABLE with INDEX/DATA DIRECTOY options).
The problem of bugs 4968, 19733, 19282 and 6895 was that functions
mysql_prepare_table, mysql_create_table and mysql_alter_table are not
re-execution friendly: during their operation they modify contents
of LEX (members create_info, alter_info, key_list, create_list),
thus making the LEX unusable for the next execution.
In particular, these functions removed processed columns and keys from
create_list, key_list and drop_list. Search the code in sql_table.cc
for drop_it.remove() and similar patterns to find evidence.
The fix is to supply to these functions a usable copy of each of the
above structures at every re-execution of an SQL statement.
To simplify memory management, LEX::key_list and LEX::create_list
were added to LEX::alter_info, a fresh copy of which is created for
every execution.
The problem of crashing bug 22060 stemmed from the fact that the above
metnioned functions were not only modifying HA_CREATE_INFO structure
in LEX, but also were changing it to point to areas in volatile memory
of the execution memory root.
The patch solves this problem by creating and using an on-stack
copy of HA_CREATE_INFO in mysql_execute_command.
Additionally, this patch splits the part of mysql_alter_table
that analizes and rewrites information from the parser into
a separate function - mysql_prepare_alter_table, in analogy with
mysql_prepare_table, which is renamed to mysql_prepare_create_table.
mysql-test/r/ps.result:
Update test results (Bug#19182, Bug#22060, Bug#4968, Bug#6895)
mysql-test/r/sp.result:
Update results (Bug#19733)
mysql-test/t/ps.test:
Add test cases for Bug#19182, Bug#22060, Bug#4968, Bug#6895
mysql-test/t/sp.test:
Add a test case for Bug#19733
sql/field.h:
Implement a deep copy constructor for create_field
sql/mysql_priv.h:
LEX::key_list and LEX::create_list were moved to LEX::alter_info.
Update declarations to use LEX::alter_info instead of these two
members.
Remove declarations of mysql_add_index, mysql_drop_index.
sql/sql_class.cc:
Implement deep copy constructors.
sql/sql_class.h:
Implement (almost) deep copy constructors for key_part_spec,
Alter_drop, Alter_column, Key, foreign_key.
Replace pair<columns, keys> with an instance of Alter_info in
select_create constructor. We create a new copy of Alter_info
each time we re-execute SELECT .. CREATE prepared statement.
sql/sql_insert.cc:
Adjust to a new signature of create_table_from_items.
sql/sql_lex.cc:
Implement Alter_info::Alter_info that would make a "deep" copy
of all definition lists (keys, columns).
Move is_partition_management() from sql_partition.cc (feature-based
file division is evil).
sql/sql_lex.h:
Move key_list and create_list to class Alter_info. Implement
Alter_info::Alter_info that can be used with PS and SP.
Get rid of Alter_info::clear() which was an attempt to save on
matches and always use Alter_info::reset().
Implement an auxiliary Alter_info::init_for_create_from_alter()
which is used in mysql_alter_table.
sql/sql_list.cc:
Implement a copy constructor of class List that makes a deep copy
of all list nodes.
sql/sql_list.h:
Implement a way to make a deep copy of all list nodes.
sql/sql_parse.cc:
Adjust to new signatures of mysql_create_table, mysql_alter_table,
select_create. Functions mysql_create_index and mysql_drop_index has
become identical after initialization of alter_info was moved to the
parser, and were merged. Flag enable_slow_log was not updated for
SQLCOM_DROP_INDEX, which was a bug.
Just like CREATE INDEX, DROP INDEX is currently done via complete
table rebuild and is rightfully a slow administrative statement.
sql/sql_partition.cc:
Move is_partition_management() to sql_lex.cc
Adjust code to the new Alter_info.
sql/sql_table.cc:
Adjust mysql_alter_table, mysql_recreate_table, mysql_create_table,
mysql_prepare_table to new signatures.
Rename mysql_prepare_table to mysql_prepare_create_table. Make
sure it follows the convention and returns FALSE for success and
TRUE for error.
Move parts of mysql_alter_table to mysql_prepare_alter_table.
Move the first invokation of mysql_prepare_table from mysql_alter_table
to compare_tables, as it was needed only for the purpose
of correct comparison.
Since now Alter_info itself is created in the runtime mem root,
adjust mysql_prepare_table to always allocate memory in the
runtime memory root.
Remove dead code.
sql/sql_yacc.yy:
LEX::key_list and LEX::create_list moved to class Alter_info
1742 lines
65 KiB
C++
1742 lines
65 KiB
C++
/* Copyright (C) 2000-2006 MySQL AB
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; version 2 of the License.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
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/*
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Because of the function new_field() all field classes that have static
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variables must declare the size_of() member function.
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*/
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#ifdef USE_PRAGMA_INTERFACE
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#pragma interface /* gcc class implementation */
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#endif
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#define NOT_FIXED_DEC 31
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#define DATETIME_DEC 6
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class Send_field;
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class Protocol;
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class create_field;
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struct st_cache_field;
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int field_conv(Field *to,Field *from);
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inline uint get_enum_pack_length(int elements)
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{
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return elements < 256 ? 1 : 2;
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}
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inline uint get_set_pack_length(int elements)
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{
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uint len= (elements + 7) / 8;
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return len > 4 ? 8 : len;
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}
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class Field
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{
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Field(const Item &); /* Prevent use of these */
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void operator=(Field &);
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public:
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static void *operator new(size_t size) {return (void*) sql_alloc((uint) size); }
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static void operator delete(void *ptr_arg, size_t size) { TRASH(ptr_arg, size); }
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char *ptr; // Position to field in record
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uchar *null_ptr; // Byte where null_bit is
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/*
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Note that you can use table->in_use as replacement for current_thd member
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only inside of val_*() and store() members (e.g. you can't use it in cons)
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*/
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struct st_table *table; // Pointer for table
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struct st_table *orig_table; // Pointer to original table
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const char **table_name, *field_name;
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LEX_STRING comment;
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/* Field is part of the following keys */
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key_map key_start, part_of_key, part_of_key_not_clustered;
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key_map part_of_sortkey;
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/*
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We use three additional unireg types for TIMESTAMP to overcome limitation
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of current binary format of .frm file. We'd like to be able to support
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NOW() as default and on update value for such fields but unable to hold
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this info anywhere except unireg_check field. This issue will be resolved
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in more clean way with transition to new text based .frm format.
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See also comment for Field_timestamp::Field_timestamp().
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*/
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enum utype { NONE,DATE,SHIELD,NOEMPTY,CASEUP,PNR,BGNR,PGNR,YES,NO,REL,
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CHECK,EMPTY,UNKNOWN_FIELD,CASEDN,NEXT_NUMBER,INTERVAL_FIELD,
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BIT_FIELD, TIMESTAMP_OLD_FIELD, CAPITALIZE, BLOB_FIELD,
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TIMESTAMP_DN_FIELD, TIMESTAMP_UN_FIELD, TIMESTAMP_DNUN_FIELD};
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enum geometry_type
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{
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GEOM_GEOMETRY = 0, GEOM_POINT = 1, GEOM_LINESTRING = 2, GEOM_POLYGON = 3,
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GEOM_MULTIPOINT = 4, GEOM_MULTILINESTRING = 5, GEOM_MULTIPOLYGON = 6,
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GEOM_GEOMETRYCOLLECTION = 7
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};
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enum imagetype { itRAW, itMBR};
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utype unireg_check;
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uint32 field_length; // Length of field
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uint32 flags;
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uint16 field_index; // field number in fields array
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uchar null_bit; // Bit used to test null bit
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Field(char *ptr_arg,uint32 length_arg,uchar *null_ptr_arg,uchar null_bit_arg,
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utype unireg_check_arg, const char *field_name_arg);
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virtual ~Field() {}
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/* Store functions returns 1 on overflow and -1 on fatal error */
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virtual int store(const char *to,uint length,CHARSET_INFO *cs)=0;
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virtual int store(double nr)=0;
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virtual int store(longlong nr, bool unsigned_val)=0;
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virtual int store_decimal(const my_decimal *d)=0;
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virtual int store_time(MYSQL_TIME *ltime, timestamp_type t_type);
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virtual double val_real(void)=0;
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virtual longlong val_int(void)=0;
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virtual my_decimal *val_decimal(my_decimal *);
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inline String *val_str(String *str) { return val_str(str, str); }
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/*
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val_str(buf1, buf2) gets two buffers and should use them as follows:
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if it needs a temp buffer to convert result to string - use buf1
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example Field_tiny::val_str()
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if the value exists as a string already - use buf2
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example Field_string::val_str()
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consequently, buf2 may be created as 'String buf;' - no memory
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will be allocated for it. buf1 will be allocated to hold a
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value if it's too small. Using allocated buffer for buf2 may result in
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an unnecessary free (and later, may be an alloc).
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This trickery is used to decrease a number of malloc calls.
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*/
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virtual String *val_str(String*,String *)=0;
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String *val_int_as_str(String *val_buffer, my_bool unsigned_flag);
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/*
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str_needs_quotes() returns TRUE if the value returned by val_str() needs
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to be quoted when used in constructing an SQL query.
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*/
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virtual bool str_needs_quotes() { return FALSE; }
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virtual Item_result result_type () const=0;
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virtual Item_result cmp_type () const { return result_type(); }
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virtual Item_result cast_to_int_type () const { return result_type(); }
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static bool type_can_have_key_part(enum_field_types);
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static enum_field_types field_type_merge(enum_field_types, enum_field_types);
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static Item_result result_merge_type(enum_field_types);
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virtual bool eq(Field *field)
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{
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return (ptr == field->ptr && null_ptr == field->null_ptr &&
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null_bit == field->null_bit);
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}
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virtual bool eq_def(Field *field);
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/*
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pack_length() returns size (in bytes) used to store field data in memory
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(i.e. it returns the maximum size of the field in a row of the table,
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which is located in RAM).
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*/
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virtual uint32 pack_length() const { return (uint32) field_length; }
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/*
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pack_length_in_rec() returns size (in bytes) used to store field data on
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storage (i.e. it returns the maximal size of the field in a row of the
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table, which is located on disk).
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*/
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virtual uint32 pack_length_in_rec() const { return pack_length(); }
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/*
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data_length() return the "real size" of the data in memory.
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*/
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virtual uint32 data_length() { return pack_length(); }
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virtual uint32 sort_length() const { return pack_length(); }
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virtual int reset(void) { bzero(ptr,pack_length()); return 0; }
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virtual void reset_fields() {}
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virtual void set_default()
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{
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my_ptrdiff_t l_offset= (my_ptrdiff_t) (table->s->default_values -
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table->record[0]);
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memcpy(ptr, ptr + l_offset, pack_length());
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if (null_ptr)
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*null_ptr= ((*null_ptr & (uchar) ~null_bit) |
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null_ptr[l_offset] & null_bit);
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}
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virtual bool binary() const { return 1; }
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virtual bool zero_pack() const { return 1; }
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virtual enum ha_base_keytype key_type() const { return HA_KEYTYPE_BINARY; }
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virtual uint32 key_length() const { return pack_length(); }
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virtual enum_field_types type() const =0;
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virtual enum_field_types real_type() const { return type(); }
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inline int cmp(const char *str) { return cmp(ptr,str); }
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virtual int cmp_max(const char *a, const char *b, uint max_len)
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{ return cmp(a, b); }
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virtual int cmp(const char *,const char *)=0;
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virtual int cmp_binary(const char *a,const char *b, uint32 max_length=~0L)
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{ return memcmp(a,b,pack_length()); }
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virtual int cmp_offset(uint row_offset)
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{ return cmp(ptr,ptr+row_offset); }
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virtual int cmp_binary_offset(uint row_offset)
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{ return cmp_binary(ptr, ptr+row_offset); };
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virtual int key_cmp(const byte *a,const byte *b)
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{ return cmp((char*) a,(char*) b); }
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virtual int key_cmp(const byte *str, uint length)
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{ return cmp(ptr,(char*) str); }
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virtual uint decimals() const { return 0; }
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/*
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Caller beware: sql_type can change str.Ptr, so check
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ptr() to see if it changed if you are using your own buffer
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in str and restore it with set() if needed
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*/
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virtual void sql_type(String &str) const =0;
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virtual uint size_of() const =0; // For new field
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inline bool is_null(my_ptrdiff_t row_offset= 0)
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{ return null_ptr ? (null_ptr[row_offset] & null_bit ? 1 : 0) : table->null_row; }
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inline bool is_real_null(my_ptrdiff_t row_offset= 0)
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{ return null_ptr ? (null_ptr[row_offset] & null_bit ? 1 : 0) : 0; }
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inline bool is_null_in_record(const uchar *record)
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{
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if (!null_ptr)
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return 0;
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return test(record[(uint) (null_ptr - (uchar*) table->record[0])] &
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null_bit);
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}
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inline bool is_null_in_record_with_offset(my_ptrdiff_t offset)
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{
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if (!null_ptr)
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return 0;
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return test(null_ptr[offset] & null_bit);
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}
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inline void set_null(my_ptrdiff_t row_offset= 0)
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{ if (null_ptr) null_ptr[row_offset]|= null_bit; }
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inline void set_notnull(my_ptrdiff_t row_offset= 0)
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{ if (null_ptr) null_ptr[row_offset]&= (uchar) ~null_bit; }
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inline bool maybe_null(void) { return null_ptr != 0 || table->maybe_null; }
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inline bool real_maybe_null(void) { return null_ptr != 0; }
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enum {
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LAST_NULL_BYTE_UNDEF= 0
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};
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/*
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Find the position of the last null byte for the field.
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SYNOPSIS
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last_null_byte()
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DESCRIPTION
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Return a pointer to the last byte of the null bytes where the
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field conceptually is placed.
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RETURN VALUE
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The position of the last null byte relative to the beginning of
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the record. If the field does not use any bits of the null
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bytes, the value 0 (LAST_NULL_BYTE_UNDEF) is returned.
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*/
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my_size_t last_null_byte() const {
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my_size_t bytes= do_last_null_byte();
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DBUG_PRINT("debug", ("last_null_byte() ==> %ld", (long) bytes));
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DBUG_ASSERT(bytes <= table->s->null_bytes);
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return bytes;
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}
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virtual void make_field(Send_field *);
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virtual void sort_string(char *buff,uint length)=0;
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virtual bool optimize_range(uint idx, uint part);
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/*
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This should be true for fields which, when compared with constant
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items, can be casted to longlong. In this case we will at 'fix_fields'
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stage cast the constant items to longlongs and at the execution stage
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use field->val_int() for comparison. Used to optimize clauses like
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'a_column BETWEEN date_const, date_const'.
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*/
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virtual bool can_be_compared_as_longlong() const { return FALSE; }
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virtual void free() {}
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virtual Field *new_field(MEM_ROOT *root, struct st_table *new_table,
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bool keep_type);
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virtual Field *new_key_field(MEM_ROOT *root, struct st_table *new_table,
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char *new_ptr, uchar *new_null_ptr,
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uint new_null_bit);
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Field *clone(MEM_ROOT *mem_root, struct st_table *new_table);
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inline void move_field(char *ptr_arg,uchar *null_ptr_arg,uchar null_bit_arg)
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{
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ptr=ptr_arg; null_ptr=null_ptr_arg; null_bit=null_bit_arg;
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}
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inline void move_field(char *ptr_arg) { ptr=ptr_arg; }
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virtual void move_field_offset(my_ptrdiff_t ptr_diff)
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{
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ptr=ADD_TO_PTR(ptr,ptr_diff,char*);
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if (null_ptr)
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null_ptr=ADD_TO_PTR(null_ptr,ptr_diff,uchar*);
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}
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inline void get_image(char *buff,uint length, CHARSET_INFO *cs)
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{ memcpy(buff,ptr,length); }
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inline void set_image(char *buff,uint length, CHARSET_INFO *cs)
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{ memcpy(ptr,buff,length); }
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/*
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Copy a field part into an output buffer.
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SYNOPSIS
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Field::get_key_image()
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buff [out] output buffer
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length output buffer size
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type itMBR for geometry blobs, otherwise itRAW
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DESCRIPTION
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This function makes a copy of field part of size equal to or
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less than "length" parameter value.
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For fields of string types (CHAR, VARCHAR, TEXT) the rest of buffer
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is padded by zero byte.
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NOTES
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For variable length character fields (i.e. UTF-8) the "length"
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parameter means a number of output buffer bytes as if all field
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characters have maximal possible size (mbmaxlen). In the other words,
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"length" parameter is a number of characters multiplied by
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field_charset->mbmaxlen.
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RETURN
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Number of copied bytes (excluding padded zero bytes -- see above).
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*/
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virtual uint get_key_image(char *buff, uint length, imagetype type)
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{
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get_image(buff, length, &my_charset_bin);
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return length;
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}
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virtual void set_key_image(char *buff,uint length)
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{ set_image(buff,length, &my_charset_bin); }
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inline longlong val_int_offset(uint row_offset)
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{
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ptr+=row_offset;
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longlong tmp=val_int();
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ptr-=row_offset;
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return tmp;
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}
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inline longlong val_int(char *new_ptr)
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{
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char *old_ptr= ptr;
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longlong return_value;
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ptr= new_ptr;
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return_value= val_int();
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ptr= old_ptr;
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return return_value;
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}
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inline String *val_str(String *str, char *new_ptr)
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{
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char *old_ptr= ptr;
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ptr= new_ptr;
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val_str(str);
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ptr= old_ptr;
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return str;
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}
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virtual bool send_binary(Protocol *protocol);
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virtual char *pack(char* to, const char *from, uint max_length=~(uint) 0)
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{
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uint32 length=pack_length();
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memcpy(to,from,length);
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return to+length;
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}
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virtual const char *unpack(char* to, const char *from)
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{
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uint length=pack_length();
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memcpy(to,from,length);
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return from+length;
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}
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virtual char *pack_key(char* to, const char *from, uint max_length)
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{
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return pack(to,from,max_length);
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}
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virtual char *pack_key_from_key_image(char* to, const char *from,
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uint max_length)
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{
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return pack(to,from,max_length);
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}
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virtual const char *unpack_key(char* to, const char *from, uint max_length)
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{
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return unpack(to,from);
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}
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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,
|
|
my_bool insert_or_update)
|
|
{ return cmp(a,b); }
|
|
virtual int pack_cmp(const char *b, uint key_length_arg,
|
|
my_bool insert_or_update)
|
|
{ return cmp(ptr,b); }
|
|
uint offset(byte *record)
|
|
{
|
|
return (uint) (ptr - (char*) record);
|
|
}
|
|
void copy_from_tmp(int offset);
|
|
uint fill_cache_field(struct st_cache_field *copy);
|
|
virtual bool get_date(MYSQL_TIME *ltime,uint fuzzydate);
|
|
virtual bool get_time(MYSQL_TIME *ltime);
|
|
virtual CHARSET_INFO *charset(void) const { return &my_charset_bin; }
|
|
virtual CHARSET_INFO *sort_charset(void) const { return charset(); }
|
|
virtual bool has_charset(void) const { return FALSE; }
|
|
virtual void set_charset(CHARSET_INFO *charset_arg) { }
|
|
virtual enum Derivation derivation(void) const
|
|
{ return DERIVATION_IMPLICIT; }
|
|
virtual void set_derivation(enum Derivation derivation_arg) { }
|
|
bool set_warning(MYSQL_ERROR::enum_warning_level, unsigned int code,
|
|
int cuted_increment);
|
|
void set_datetime_warning(MYSQL_ERROR::enum_warning_level, uint code,
|
|
const char *str, uint str_len,
|
|
timestamp_type ts_type, int cuted_increment);
|
|
void set_datetime_warning(MYSQL_ERROR::enum_warning_level, uint code,
|
|
longlong nr, timestamp_type ts_type,
|
|
int cuted_increment);
|
|
void set_datetime_warning(MYSQL_ERROR::enum_warning_level, const uint code,
|
|
double nr, timestamp_type ts_type);
|
|
inline bool check_overflow(int op_result)
|
|
{
|
|
return (op_result == E_DEC_OVERFLOW);
|
|
}
|
|
int warn_if_overflow(int op_result);
|
|
void init(TABLE *table_arg)
|
|
{
|
|
orig_table= table= table_arg;
|
|
table_name= &table_arg->alias;
|
|
}
|
|
|
|
/* maximum possible display length */
|
|
virtual uint32 max_display_length()= 0;
|
|
|
|
virtual uint is_equal(create_field *new_field);
|
|
/* convert decimal to longlong with overflow check */
|
|
longlong convert_decimal2longlong(const my_decimal *val, bool unsigned_flag,
|
|
int *err);
|
|
/* The max. number of characters */
|
|
inline uint32 char_length() const
|
|
{
|
|
return field_length / charset()->mbmaxlen;
|
|
}
|
|
|
|
/* Hash value */
|
|
virtual void hash(ulong *nr, ulong *nr2);
|
|
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;
|
|
|
|
private:
|
|
/*
|
|
Primitive for implementing last_null_byte().
|
|
|
|
SYNOPSIS
|
|
do_last_null_byte()
|
|
|
|
DESCRIPTION
|
|
Primitive for the implementation of the last_null_byte()
|
|
function. This represents the inheritance interface and can be
|
|
overridden by subclasses.
|
|
*/
|
|
virtual my_size_t do_last_null_byte() const;
|
|
};
|
|
|
|
|
|
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,
|
|
uint8 dec_arg, bool zero_arg, bool unsigned_arg);
|
|
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);
|
|
int store_decimal(const my_decimal *);
|
|
my_decimal *val_decimal(my_decimal *);
|
|
uint is_equal(create_field *new_field);
|
|
int check_int(CHARSET_INFO *cs, const char *str, int length,
|
|
const char *int_end, int error);
|
|
bool get_int(CHARSET_INFO *cs, const char *from, uint len,
|
|
longlong *rnd, ulonglong unsigned_max,
|
|
longlong signed_min, longlong signed_max);
|
|
};
|
|
|
|
|
|
class Field_str :public Field {
|
|
protected:
|
|
CHARSET_INFO *field_charset;
|
|
enum Derivation field_derivation;
|
|
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, CHARSET_INFO *charset);
|
|
Item_result result_type () const { return STRING_RESULT; }
|
|
uint decimals() const { return NOT_FIXED_DEC; }
|
|
int store(double nr);
|
|
int store(longlong nr, bool unsigned_val)=0;
|
|
int store_decimal(const my_decimal *);
|
|
int store(const char *to,uint length,CHARSET_INFO *cs)=0;
|
|
uint size_of() const { return sizeof(*this); }
|
|
CHARSET_INFO *charset(void) const { return field_charset; }
|
|
void set_charset(CHARSET_INFO *charset_arg) { field_charset= charset_arg; }
|
|
enum Derivation derivation(void) const { return field_derivation; }
|
|
virtual void set_derivation(enum Derivation derivation_arg)
|
|
{ field_derivation= derivation_arg; }
|
|
bool binary() const { return field_charset == &my_charset_bin; }
|
|
uint32 max_display_length() { return field_length; }
|
|
friend class create_field;
|
|
my_decimal *val_decimal(my_decimal *);
|
|
virtual bool str_needs_quotes() { return TRUE; }
|
|
bool compare_str_field_flags(create_field *new_field, uint32 flags);
|
|
uint is_equal(create_field *new_field);
|
|
};
|
|
|
|
|
|
/* base class for Field_string, Field_varstring and Field_blob */
|
|
|
|
class Field_longstr :public Field_str
|
|
{
|
|
public:
|
|
Field_longstr(char *ptr_arg, uint32 len_arg, uchar *null_ptr_arg,
|
|
uchar null_bit_arg, utype unireg_check_arg,
|
|
const char *field_name_arg, CHARSET_INFO *charset_arg)
|
|
:Field_str(ptr_arg, len_arg, null_ptr_arg, null_bit_arg, unireg_check_arg,
|
|
field_name_arg, charset_arg)
|
|
{}
|
|
|
|
int store_decimal(const my_decimal *d);
|
|
};
|
|
|
|
/* base class for float and double and decimal (old one) */
|
|
class Field_real :public Field_num {
|
|
public:
|
|
Field_real(char *ptr_arg, uint32 len_arg, uchar *null_ptr_arg,
|
|
uchar null_bit_arg, utype unireg_check_arg,
|
|
const char *field_name_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, dec_arg, zero_arg, unsigned_arg)
|
|
{}
|
|
int store_decimal(const my_decimal *);
|
|
my_decimal *val_decimal(my_decimal *);
|
|
uint32 max_display_length() { return field_length; }
|
|
};
|
|
|
|
|
|
class Field_decimal :public Field_real {
|
|
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,
|
|
uint8 dec_arg,bool zero_arg,bool unsigned_arg)
|
|
:Field_real(ptr_arg, len_arg, null_ptr_arg, null_bit_arg,
|
|
unireg_check_arg, field_name_arg,
|
|
dec_arg, zero_arg, unsigned_arg)
|
|
{}
|
|
enum_field_types type() const { return MYSQL_TYPE_DECIMAL;}
|
|
enum ha_base_keytype key_type() const
|
|
{ return zerofill ? HA_KEYTYPE_BINARY : HA_KEYTYPE_NUM; }
|
|
int reset(void);
|
|
int store(const char *to,uint length,CHARSET_INFO *charset);
|
|
int store(double nr);
|
|
int store(longlong nr, bool unsigned_val);
|
|
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;
|
|
};
|
|
|
|
|
|
/* New decimal/numeric field which use fixed point arithmetic */
|
|
class Field_new_decimal :public Field_num {
|
|
public:
|
|
/* The maximum number of decimal digits can be stored */
|
|
uint precision;
|
|
uint bin_size;
|
|
/*
|
|
Constructors take max_length of the field as a parameter - not the
|
|
precision as the number of decimal digits allowed.
|
|
So for example we need to count length from precision handling
|
|
CREATE TABLE ( DECIMAL(x,y))
|
|
*/
|
|
Field_new_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,
|
|
uint8 dec_arg, bool zero_arg, bool unsigned_arg);
|
|
Field_new_decimal(uint32 len_arg, bool maybe_null_arg,
|
|
const char *field_name_arg, uint8 dec_arg,
|
|
bool unsigned_arg);
|
|
enum_field_types type() const { return MYSQL_TYPE_NEWDECIMAL;}
|
|
enum ha_base_keytype key_type() const { return HA_KEYTYPE_BINARY; }
|
|
Item_result result_type () const { return DECIMAL_RESULT; }
|
|
int reset(void);
|
|
bool store_value(const my_decimal *decimal_value);
|
|
void set_value_on_overflow(my_decimal *decimal_value, bool sign);
|
|
int store(const char *to, uint length, CHARSET_INFO *charset);
|
|
int store(double nr);
|
|
int store(longlong nr, bool unsigned_val);
|
|
int store_time(MYSQL_TIME *ltime, timestamp_type t_type);
|
|
int store_decimal(const my_decimal *);
|
|
double val_real(void);
|
|
longlong val_int(void);
|
|
my_decimal *val_decimal(my_decimal *);
|
|
String *val_str(String*, String *);
|
|
int cmp(const char *, const char*);
|
|
void sort_string(char *buff, uint length);
|
|
bool zero_pack() const { return 0; }
|
|
void sql_type(String &str) const;
|
|
uint32 max_display_length() { return field_length; }
|
|
uint size_of() const { return sizeof(*this); }
|
|
uint32 pack_length() const { return (uint32) bin_size; }
|
|
uint is_equal(create_field *new_field);
|
|
};
|
|
|
|
|
|
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,
|
|
bool zero_arg, bool unsigned_arg)
|
|
:Field_num(ptr_arg, len_arg, null_ptr_arg, null_bit_arg,
|
|
unireg_check_arg, field_name_arg,
|
|
0, zero_arg,unsigned_arg)
|
|
{}
|
|
enum Item_result result_type () const { return INT_RESULT; }
|
|
enum_field_types type() const { return MYSQL_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, bool unsigned_val);
|
|
int reset(void) { ptr[0]=0; return 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;
|
|
uint32 max_display_length() { return 4; }
|
|
};
|
|
|
|
|
|
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,
|
|
bool zero_arg, bool unsigned_arg)
|
|
:Field_num(ptr_arg, len_arg, null_ptr_arg, null_bit_arg,
|
|
unireg_check_arg, field_name_arg,
|
|
0, zero_arg,unsigned_arg)
|
|
{}
|
|
Field_short(uint32 len_arg,bool maybe_null_arg, const char *field_name_arg,
|
|
bool unsigned_arg)
|
|
:Field_num((char*) 0, len_arg, maybe_null_arg ? (uchar*) "": 0,0,
|
|
NONE, field_name_arg, 0, 0, unsigned_arg)
|
|
{}
|
|
enum Item_result result_type () const { return INT_RESULT; }
|
|
enum_field_types type() const { return MYSQL_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, bool unsigned_val);
|
|
int reset(void) { ptr[0]=ptr[1]=0; return 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;
|
|
uint32 max_display_length() { return 6; }
|
|
};
|
|
|
|
|
|
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,
|
|
bool zero_arg, bool unsigned_arg)
|
|
:Field_num(ptr_arg, len_arg, null_ptr_arg, null_bit_arg,
|
|
unireg_check_arg, field_name_arg,
|
|
0, zero_arg,unsigned_arg)
|
|
{}
|
|
enum Item_result result_type () const { return INT_RESULT; }
|
|
enum_field_types type() const { return MYSQL_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, bool unsigned_val);
|
|
int reset(void) { ptr[0]=ptr[1]=ptr[2]=0; return 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;
|
|
uint32 max_display_length() { return 8; }
|
|
};
|
|
|
|
|
|
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,
|
|
bool zero_arg, bool unsigned_arg)
|
|
:Field_num(ptr_arg, len_arg, null_ptr_arg, null_bit_arg,
|
|
unireg_check_arg, field_name_arg,
|
|
0, zero_arg,unsigned_arg)
|
|
{}
|
|
Field_long(uint32 len_arg,bool maybe_null_arg, const char *field_name_arg,
|
|
bool unsigned_arg)
|
|
:Field_num((char*) 0, len_arg, maybe_null_arg ? (uchar*) "": 0,0,
|
|
NONE, field_name_arg,0,0,unsigned_arg)
|
|
{}
|
|
enum Item_result result_type () const { return INT_RESULT; }
|
|
enum_field_types type() const { return MYSQL_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, bool unsigned_val);
|
|
int reset(void) { ptr[0]=ptr[1]=ptr[2]=ptr[3]=0; return 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;
|
|
uint32 max_display_length() { return 11; }
|
|
};
|
|
|
|
|
|
#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,
|
|
bool zero_arg, bool unsigned_arg)
|
|
:Field_num(ptr_arg, len_arg, null_ptr_arg, null_bit_arg,
|
|
unireg_check_arg, field_name_arg,
|
|
0, zero_arg,unsigned_arg)
|
|
{}
|
|
Field_longlong(uint32 len_arg,bool maybe_null_arg,
|
|
const char *field_name_arg,
|
|
bool unsigned_arg)
|
|
:Field_num((char*) 0, len_arg, maybe_null_arg ? (uchar*) "": 0,0,
|
|
NONE, field_name_arg,0,0,unsigned_arg)
|
|
{}
|
|
enum Item_result result_type () const { return INT_RESULT; }
|
|
enum_field_types type() const { return MYSQL_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, bool unsigned_val);
|
|
int reset(void)
|
|
{
|
|
ptr[0]=ptr[1]=ptr[2]=ptr[3]=ptr[4]=ptr[5]=ptr[6]=ptr[7]=0;
|
|
return 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 can_be_compared_as_longlong() const { return TRUE; }
|
|
uint32 max_display_length() { return 20; }
|
|
};
|
|
#endif
|
|
|
|
|
|
class Field_float :public Field_real {
|
|
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,
|
|
uint8 dec_arg,bool zero_arg,bool unsigned_arg)
|
|
:Field_real(ptr_arg, len_arg, null_ptr_arg, null_bit_arg,
|
|
unireg_check_arg, field_name_arg,
|
|
dec_arg, zero_arg, unsigned_arg)
|
|
{}
|
|
Field_float(uint32 len_arg, bool maybe_null_arg, const char *field_name_arg,
|
|
uint8 dec_arg)
|
|
:Field_real((char*) 0, len_arg, maybe_null_arg ? (uchar*) "": 0, (uint) 0,
|
|
NONE, field_name_arg, dec_arg, 0, 0)
|
|
{}
|
|
enum_field_types type() const { return MYSQL_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, bool unsigned_val);
|
|
int reset(void) { bzero(ptr,sizeof(float)); return 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 sizeof(float); }
|
|
void sql_type(String &str) const;
|
|
};
|
|
|
|
|
|
class Field_double :public Field_real {
|
|
public:
|
|
my_bool not_fixed;
|
|
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,
|
|
uint8 dec_arg,bool zero_arg,bool unsigned_arg)
|
|
:Field_real(ptr_arg, len_arg, null_ptr_arg, null_bit_arg,
|
|
unireg_check_arg, field_name_arg,
|
|
dec_arg, zero_arg, unsigned_arg),
|
|
not_fixed(dec_arg >= NOT_FIXED_DEC)
|
|
{}
|
|
Field_double(uint32 len_arg, bool maybe_null_arg, const char *field_name_arg,
|
|
uint8 dec_arg)
|
|
:Field_real((char*) 0, len_arg, maybe_null_arg ? (uchar*) "" : 0, (uint) 0,
|
|
NONE, field_name_arg, dec_arg, 0, 0),
|
|
not_fixed(dec_arg >= NOT_FIXED_DEC)
|
|
{}
|
|
Field_double(uint32 len_arg, bool maybe_null_arg, const char *field_name_arg,
|
|
uint8 dec_arg, my_bool not_fixed_srg)
|
|
:Field_real((char*) 0, len_arg, maybe_null_arg ? (uchar*) "" : 0, (uint) 0,
|
|
NONE, field_name_arg, dec_arg, 0, 0),
|
|
not_fixed(not_fixed_srg)
|
|
{}
|
|
enum_field_types type() const { return MYSQL_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, bool unsigned_val);
|
|
int reset(void) { bzero(ptr,sizeof(double)); return 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 sizeof(double); }
|
|
void sql_type(String &str) const;
|
|
uint size_of() const { return sizeof(*this); }
|
|
};
|
|
|
|
|
|
/* Everything saved in this will disappear. 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,
|
|
CHARSET_INFO *cs)
|
|
:Field_str(ptr_arg, len_arg, null, 1,
|
|
unireg_check_arg, field_name_arg, cs)
|
|
{}
|
|
enum_field_types type() const { return MYSQL_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, bool unsigned_val) { null[0]=1; return 0; }
|
|
int store_decimal(const my_decimal *d) { null[0]=1; return 0; }
|
|
int reset(void) { return 0; }
|
|
double val_real(void) { return 0.0;}
|
|
longlong val_int(void) { return 0;}
|
|
my_decimal *val_decimal(my_decimal *) { 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); }
|
|
uint32 max_display_length() { return 4; }
|
|
};
|
|
|
|
|
|
class Field_timestamp :public Field_str {
|
|
public:
|
|
Field_timestamp(char *ptr_arg, uint32 len_arg,
|
|
uchar *null_ptr_arg, uchar null_bit_arg,
|
|
enum utype unireg_check_arg, const char *field_name_arg,
|
|
TABLE_SHARE *share, CHARSET_INFO *cs);
|
|
Field_timestamp(bool maybe_null_arg, const char *field_name_arg,
|
|
CHARSET_INFO *cs);
|
|
enum_field_types type() const { return MYSQL_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, bool unsigned_val);
|
|
int reset(void) { ptr[0]=ptr[1]=ptr[2]=ptr[3]=0; return 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 can_be_compared_as_longlong() const { return TRUE; }
|
|
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();
|
|
}
|
|
/* Get TIMESTAMP field value as seconds since begging of Unix Epoch */
|
|
inline long get_timestamp(my_bool *null_value)
|
|
{
|
|
if ((*null_value= is_null()))
|
|
return 0;
|
|
#ifdef WORDS_BIGENDIAN
|
|
if (table && table->s->db_low_byte_first)
|
|
return sint4korr(ptr);
|
|
#endif
|
|
long tmp;
|
|
longget(tmp,ptr);
|
|
return tmp;
|
|
}
|
|
bool get_date(MYSQL_TIME *ltime,uint fuzzydate);
|
|
bool get_time(MYSQL_TIME *ltime);
|
|
timestamp_auto_set_type get_auto_set_type() const;
|
|
};
|
|
|
|
|
|
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)
|
|
:Field_tiny(ptr_arg, len_arg, null_ptr_arg, null_bit_arg,
|
|
unireg_check_arg, field_name_arg, 1, 1)
|
|
{}
|
|
enum_field_types type() const { return MYSQL_TYPE_YEAR;}
|
|
int store(const char *to,uint length,CHARSET_INFO *charset);
|
|
int store(double nr);
|
|
int store(longlong nr, bool unsigned_val);
|
|
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 can_be_compared_as_longlong() const { return TRUE; }
|
|
};
|
|
|
|
|
|
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,
|
|
CHARSET_INFO *cs)
|
|
:Field_str(ptr_arg, 10, null_ptr_arg, null_bit_arg,
|
|
unireg_check_arg, field_name_arg, cs)
|
|
{}
|
|
Field_date(bool maybe_null_arg, const char *field_name_arg,
|
|
CHARSET_INFO *cs)
|
|
:Field_str((char*) 0,10, maybe_null_arg ? (uchar*) "": 0,0,
|
|
NONE, field_name_arg, cs) {}
|
|
enum_field_types type() const { return MYSQL_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, bool unsigned_val);
|
|
int reset(void) { ptr[0]=ptr[1]=ptr[2]=ptr[3]=0; return 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 can_be_compared_as_longlong() const { return TRUE; }
|
|
bool zero_pack() const { return 1; }
|
|
};
|
|
|
|
|
|
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,
|
|
CHARSET_INFO *cs)
|
|
:Field_str(ptr_arg, 10, null_ptr_arg, null_bit_arg,
|
|
unireg_check_arg, field_name_arg, cs)
|
|
{}
|
|
enum_field_types type() const { return MYSQL_TYPE_DATE;}
|
|
enum_field_types real_type() const { return MYSQL_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, bool unsigned_val);
|
|
int store_time(MYSQL_TIME *ltime, timestamp_type type);
|
|
int reset(void) { ptr[0]=ptr[1]=ptr[2]=0; return 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 can_be_compared_as_longlong() const { return TRUE; }
|
|
bool zero_pack() const { return 1; }
|
|
bool get_date(MYSQL_TIME *ltime,uint fuzzydate);
|
|
bool get_time(MYSQL_TIME *ltime);
|
|
};
|
|
|
|
|
|
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,
|
|
CHARSET_INFO *cs)
|
|
:Field_str(ptr_arg, 8, null_ptr_arg, null_bit_arg,
|
|
unireg_check_arg, field_name_arg, cs)
|
|
{}
|
|
Field_time(bool maybe_null_arg, const char *field_name_arg,
|
|
CHARSET_INFO *cs)
|
|
:Field_str((char*) 0,8, maybe_null_arg ? (uchar*) "": 0,0,
|
|
NONE, field_name_arg, cs) {}
|
|
enum_field_types type() const { return MYSQL_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(MYSQL_TIME *ltime, timestamp_type type);
|
|
int store(const char *to,uint length,CHARSET_INFO *charset);
|
|
int store(double nr);
|
|
int store(longlong nr, bool unsigned_val);
|
|
int reset(void) { ptr[0]=ptr[1]=ptr[2]=0; return 0; }
|
|
double val_real(void);
|
|
longlong val_int(void);
|
|
String *val_str(String*,String *);
|
|
bool get_date(MYSQL_TIME *ltime, uint fuzzydate);
|
|
bool send_binary(Protocol *protocol);
|
|
bool get_time(MYSQL_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 can_be_compared_as_longlong() const { return TRUE; }
|
|
bool zero_pack() const { return 1; }
|
|
};
|
|
|
|
|
|
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,
|
|
CHARSET_INFO *cs)
|
|
:Field_str(ptr_arg, 19, null_ptr_arg, null_bit_arg,
|
|
unireg_check_arg, field_name_arg, cs)
|
|
{}
|
|
Field_datetime(bool maybe_null_arg, const char *field_name_arg,
|
|
CHARSET_INFO *cs)
|
|
:Field_str((char*) 0,19, maybe_null_arg ? (uchar*) "": 0,0,
|
|
NONE, field_name_arg, cs) {}
|
|
enum_field_types type() const { return MYSQL_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; }
|
|
uint decimals() const { return DATETIME_DEC; }
|
|
int store(const char *to,uint length,CHARSET_INFO *charset);
|
|
int store(double nr);
|
|
int store(longlong nr, bool unsigned_val);
|
|
int store_time(MYSQL_TIME *ltime, timestamp_type type);
|
|
int reset(void)
|
|
{
|
|
ptr[0]=ptr[1]=ptr[2]=ptr[3]=ptr[4]=ptr[5]=ptr[6]=ptr[7]=0;
|
|
return 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 can_be_compared_as_longlong() const { return TRUE; }
|
|
bool zero_pack() const { return 1; }
|
|
bool get_date(MYSQL_TIME *ltime,uint fuzzydate);
|
|
bool get_time(MYSQL_TIME *ltime);
|
|
};
|
|
|
|
|
|
class Field_string :public Field_longstr {
|
|
public:
|
|
bool can_alter_field_type;
|
|
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,
|
|
CHARSET_INFO *cs)
|
|
:Field_longstr(ptr_arg, len_arg, null_ptr_arg, null_bit_arg,
|
|
unireg_check_arg, field_name_arg, cs),
|
|
can_alter_field_type(1) {};
|
|
Field_string(uint32 len_arg,bool maybe_null_arg, const char *field_name_arg,
|
|
CHARSET_INFO *cs)
|
|
:Field_longstr((char*) 0, len_arg, maybe_null_arg ? (uchar*) "": 0, 0,
|
|
NONE, field_name_arg, cs),
|
|
can_alter_field_type(1) {};
|
|
|
|
enum_field_types type() const
|
|
{
|
|
return ((can_alter_field_type && 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; }
|
|
bool zero_pack() const { return 0; }
|
|
int reset(void)
|
|
{
|
|
charset()->cset->fill(charset(),ptr,field_length,
|
|
(has_charset() ? ' ' : 0));
|
|
return 0;
|
|
}
|
|
int store(const char *to,uint length,CHARSET_INFO *charset);
|
|
int store(longlong nr, bool unsigned_val);
|
|
int store(double nr) { return Field_str::store(nr); } /* QQ: To be deleted */
|
|
double val_real(void);
|
|
longlong val_int(void);
|
|
String *val_str(String*,String *);
|
|
my_decimal *val_decimal(my_decimal *);
|
|
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,
|
|
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); }
|
|
enum_field_types real_type() const { return MYSQL_TYPE_STRING; }
|
|
bool has_charset(void) const
|
|
{ return charset() == &my_charset_bin ? FALSE : TRUE; }
|
|
Field *new_field(MEM_ROOT *root, struct st_table *new_table, bool keep_type);
|
|
virtual uint get_key_image(char *buff,uint length, imagetype type);
|
|
};
|
|
|
|
|
|
class Field_varstring :public Field_longstr {
|
|
public:
|
|
/* 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,
|
|
TABLE_SHARE *share, CHARSET_INFO *cs)
|
|
:Field_longstr(ptr_arg, len_arg, null_ptr_arg, null_bit_arg,
|
|
unireg_check_arg, field_name_arg, cs),
|
|
length_bytes(length_bytes_arg)
|
|
{
|
|
share->varchar_fields++;
|
|
}
|
|
Field_varstring(uint32 len_arg,bool maybe_null_arg,
|
|
const char *field_name_arg,
|
|
TABLE_SHARE *share, CHARSET_INFO *cs)
|
|
:Field_longstr((char*) 0,len_arg, maybe_null_arg ? (uchar*) "": 0, 0,
|
|
NONE, field_name_arg, cs),
|
|
length_bytes(len_arg < 256 ? 1 :2)
|
|
{
|
|
share->varchar_fields++;
|
|
}
|
|
|
|
enum_field_types type() const { return MYSQL_TYPE_VARCHAR; }
|
|
enum ha_base_keytype key_type() const;
|
|
bool zero_pack() const { return 0; }
|
|
int reset(void) { bzero(ptr,field_length+length_bytes); return 0; }
|
|
uint32 pack_length() const { return (uint32) field_length+length_bytes; }
|
|
uint32 key_length() const { return (uint32) field_length; }
|
|
uint32 sort_length() const
|
|
{
|
|
return (uint32) field_length + (field_charset == &my_charset_bin ?
|
|
length_bytes : 0);
|
|
}
|
|
int store(const char *to,uint length,CHARSET_INFO *charset);
|
|
int store(longlong nr, bool unsigned_val);
|
|
int store(double nr) { return Field_str::store(nr); } /* QQ: To be deleted */
|
|
double val_real(void);
|
|
longlong val_int(void);
|
|
String *val_str(String*,String *);
|
|
my_decimal *val_decimal(my_decimal *);
|
|
int cmp_max(const char *, const char *, uint max_length);
|
|
int cmp(const char *a,const char*b)
|
|
{
|
|
return cmp_max(a, b, ~0L);
|
|
}
|
|
void sort_string(char *buff,uint length);
|
|
uint 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);
|
|
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);
|
|
uint32 data_length();
|
|
uint size_of() const { return sizeof(*this); }
|
|
enum_field_types real_type() const { return MYSQL_TYPE_VARCHAR; }
|
|
bool has_charset(void) const
|
|
{ return charset() == &my_charset_bin ? FALSE : TRUE; }
|
|
Field *new_field(MEM_ROOT *root, struct st_table *new_table, bool keep_type);
|
|
Field *new_key_field(MEM_ROOT *root, struct st_table *new_table,
|
|
char *new_ptr, uchar *new_null_ptr,
|
|
uint new_null_bit);
|
|
uint is_equal(create_field *new_field);
|
|
void hash(ulong *nr, ulong *nr2);
|
|
};
|
|
|
|
|
|
class Field_blob :public Field_longstr {
|
|
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,
|
|
TABLE_SHARE *share, uint blob_pack_length, CHARSET_INFO *cs);
|
|
Field_blob(uint32 len_arg,bool maybe_null_arg, const char *field_name_arg,
|
|
CHARSET_INFO *cs)
|
|
:Field_longstr((char*) 0, len_arg, maybe_null_arg ? (uchar*) "": 0, 0,
|
|
NONE, field_name_arg, cs),
|
|
packlength(4)
|
|
{
|
|
flags|= BLOB_FLAG;
|
|
}
|
|
Field_blob(uint32 len_arg,bool maybe_null_arg, const char *field_name_arg,
|
|
CHARSET_INFO *cs, bool set_packlength)
|
|
:Field_longstr((char*) 0,len_arg, maybe_null_arg ? (uchar*) "": 0, 0,
|
|
NONE, field_name_arg, cs)
|
|
{
|
|
flags|= BLOB_FLAG;
|
|
packlength= 4;
|
|
if (set_packlength)
|
|
{
|
|
uint32 l_char_length= len_arg/cs->mbmaxlen;
|
|
packlength= l_char_length <= 255 ? 1 :
|
|
l_char_length <= 65535 ? 2 :
|
|
l_char_length <= 16777215 ? 3 : 4;
|
|
}
|
|
}
|
|
enum_field_types type() const { return MYSQL_TYPE_BLOB;}
|
|
enum ha_base_keytype key_type() const
|
|
{ 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, bool unsigned_val);
|
|
double val_real(void);
|
|
longlong val_int(void);
|
|
String *val_str(String*,String *);
|
|
my_decimal *val_decimal(my_decimal *);
|
|
int cmp_max(const char *, const char *, uint max_length);
|
|
int cmp(const char *a,const char*b)
|
|
{ return cmp_max(a, b, ~0L); }
|
|
int cmp(const char *a, uint32 a_length, const char *b, uint32 b_length);
|
|
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);
|
|
uint32 key_length() const { return 0; }
|
|
void sort_string(char *buff,uint length);
|
|
uint32 pack_length() const
|
|
{ return (uint32) (packlength+table->s->blob_ptr_size); }
|
|
uint32 sort_length() const;
|
|
inline uint32 max_data_length() const
|
|
{
|
|
return (uint32) (((ulonglong) 1 << (packlength*8)) -1);
|
|
}
|
|
int reset(void) { bzero(ptr, packlength+sizeof(char*)); return 0; }
|
|
void reset_fields() { bzero((char*) &value,sizeof(value)); }
|
|
#ifndef WORDS_BIGENDIAN
|
|
static
|
|
#endif
|
|
void store_length(char *i_ptr, uint i_packlength, uint32 i_number);
|
|
inline void store_length(uint32 number)
|
|
{
|
|
store_length(ptr, packlength, number);
|
|
}
|
|
|
|
inline uint32 get_length(uint row_offset=0)
|
|
{ return get_length(ptr+row_offset); }
|
|
uint32 get_length(const char *ptr);
|
|
void put_length(char *pos, uint32 length);
|
|
inline void get_ptr(char **str)
|
|
{
|
|
memcpy_fixed(str,ptr+packlength,sizeof(char*));
|
|
}
|
|
inline void get_ptr(char **str, uint row_offset)
|
|
{
|
|
memcpy_fixed(str,ptr+packlength+row_offset,sizeof(char*));
|
|
}
|
|
inline void set_ptr(char *length,char *data)
|
|
{
|
|
memcpy(ptr,length,packlength);
|
|
memcpy_fixed(ptr+packlength,&data,sizeof(char*));
|
|
}
|
|
void set_ptr_offset(my_ptrdiff_t ptr_diff, uint32 length,char *data)
|
|
{
|
|
char *ptr_ofs= ADD_TO_PTR(ptr,ptr_diff,char*);
|
|
store_length(ptr_ofs, packlength, length);
|
|
memcpy_fixed(ptr_ofs+packlength,&data,sizeof(char*));
|
|
}
|
|
inline void set_ptr(uint32 length,char *data)
|
|
{
|
|
set_ptr_offset(0, length, data);
|
|
}
|
|
uint 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;
|
|
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);
|
|
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,
|
|
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(); }
|
|
inline void clear_temporary() { bzero((char*) &value,sizeof(value)); }
|
|
friend int 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; }
|
|
uint32 max_display_length();
|
|
uint is_equal(create_field *new_field);
|
|
};
|
|
|
|
|
|
#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,
|
|
TABLE_SHARE *share, 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, share, 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,
|
|
TABLE_SHARE *share, enum geometry_type geom_type_arg)
|
|
:Field_blob(len_arg, maybe_null_arg, field_name_arg, &my_charset_bin)
|
|
{ geom_type= geom_type_arg; }
|
|
enum ha_base_keytype key_type() const { return HA_KEYTYPE_VARBINARY2; }
|
|
enum_field_types type() const { return MYSQL_TYPE_GEOMETRY; }
|
|
void sql_type(String &str) const;
|
|
int store(const char *to, uint length, CHARSET_INFO *charset);
|
|
int store(double nr);
|
|
int store(longlong nr, bool unsigned_val);
|
|
int store_decimal(const my_decimal *);
|
|
uint get_key_image(char *buff,uint length,imagetype type);
|
|
uint size_of() const { return sizeof(*this); }
|
|
int reset(void) { return !maybe_null() || Field_blob::reset(); }
|
|
};
|
|
#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,
|
|
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, charset_arg),
|
|
packlength(packlength_arg),typelib(typelib_arg)
|
|
{
|
|
flags|=ENUM_FLAG;
|
|
}
|
|
Field *new_field(MEM_ROOT *root, struct st_table *new_table, bool keep_type);
|
|
enum_field_types type() const { return MYSQL_TYPE_STRING; }
|
|
enum Item_result cmp_type () const { return INT_RESULT; }
|
|
enum Item_result cast_to_int_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, bool unsigned_val);
|
|
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 MYSQL_TYPE_ENUM; }
|
|
virtual bool zero_pack() const { return 0; }
|
|
bool optimize_range(uint idx, uint part) { return 0; }
|
|
bool eq_def(Field *field);
|
|
bool has_charset(void) const { return TRUE; }
|
|
/* enum and set are sorted as integers */
|
|
CHARSET_INFO *sort_charset(void) const { return &my_charset_bin; }
|
|
};
|
|
|
|
|
|
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,
|
|
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,
|
|
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, FALSE); }
|
|
int store(longlong nr, bool unsigned_val);
|
|
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 MYSQL_TYPE_SET; }
|
|
bool has_charset(void) const { return TRUE; }
|
|
};
|
|
|
|
|
|
/*
|
|
Note:
|
|
To use Field_bit::cmp_binary() you need to copy the bits stored in
|
|
the beginning of the record (the NULL bytes) to each memory you
|
|
want to compare (where the arguments point).
|
|
|
|
This is the reason:
|
|
- Field_bit::cmp_binary() is only implemented in the base class
|
|
(Field::cmp_binary()).
|
|
- Field::cmp_binary() currenly use pack_length() to calculate how
|
|
long the data is.
|
|
- pack_length() includes size of the bits stored in the NULL bytes
|
|
of the record.
|
|
*/
|
|
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
|
|
uint bytes_in_rec;
|
|
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);
|
|
enum_field_types type() const { return MYSQL_TYPE_BIT; }
|
|
enum ha_base_keytype key_type() const { return HA_KEYTYPE_BIT; }
|
|
uint32 key_length() const { return (uint32) (field_length + 7) / 8; }
|
|
uint32 max_display_length() { return field_length; }
|
|
uint size_of() const { return sizeof(*this); }
|
|
Item_result result_type () const { return INT_RESULT; }
|
|
int reset(void) { bzero(ptr, bytes_in_rec); return 0; }
|
|
int store(const char *to, uint length, CHARSET_INFO *charset);
|
|
int store(double nr);
|
|
int store(longlong nr, bool unsigned_val);
|
|
int store_decimal(const my_decimal *);
|
|
double val_real(void);
|
|
longlong val_int(void);
|
|
String *val_str(String*, String *);
|
|
virtual bool str_needs_quotes() { return TRUE; }
|
|
my_decimal *val_decimal(my_decimal *);
|
|
int cmp(const char *a, const char *b)
|
|
{ return cmp_binary(a, b); }
|
|
int cmp_binary_offset(uint row_offset)
|
|
{ return cmp_offset(row_offset); }
|
|
int cmp_max(const char *a, const char *b, uint max_length);
|
|
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);
|
|
uint 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 + 7) / 8; }
|
|
uint32 pack_length_in_rec() const { return bytes_in_rec; }
|
|
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);
|
|
virtual void set_default();
|
|
|
|
Field *new_key_field(MEM_ROOT *root, struct st_table *new_table,
|
|
char *new_ptr, uchar *new_null_ptr,
|
|
uint new_null_bit);
|
|
void set_bit_ptr(uchar *bit_ptr_arg, uchar bit_ofs_arg)
|
|
{
|
|
bit_ptr= bit_ptr_arg;
|
|
bit_ofs= bit_ofs_arg;
|
|
}
|
|
bool eq(Field *field)
|
|
{
|
|
return (Field::eq(field) &&
|
|
field->type() == type() &&
|
|
bit_ptr == ((Field_bit *)field)->bit_ptr &&
|
|
bit_ofs == ((Field_bit *)field)->bit_ofs);
|
|
}
|
|
void move_field_offset(my_ptrdiff_t ptr_diff)
|
|
{
|
|
Field::move_field_offset(ptr_diff);
|
|
bit_ptr= ADD_TO_PTR(bit_ptr, ptr_diff, uchar*);
|
|
}
|
|
|
|
private:
|
|
virtual my_size_t do_last_null_byte() const;
|
|
};
|
|
|
|
|
|
/**
|
|
BIT field represented as chars for non-MyISAM tables.
|
|
|
|
@todo The inheritance relationship is backwards since Field_bit is
|
|
an extended version of Field_bit_as_char and not the other way
|
|
around. Hence, we should refactor it to fix the hierarchy order.
|
|
*/
|
|
class Field_bit_as_char: public Field_bit {
|
|
public:
|
|
Field_bit_as_char(char *ptr_arg, uint32 len_arg, uchar *null_ptr_arg,
|
|
uchar null_bit_arg,
|
|
enum utype unireg_check_arg, const char *field_name_arg);
|
|
enum ha_base_keytype key_type() const { return HA_KEYTYPE_BINARY; }
|
|
uint size_of() const { return sizeof(*this); }
|
|
int store(const char *to, uint length, CHARSET_INFO *charset);
|
|
int store(double nr) { return Field_bit::store(nr); }
|
|
int store(longlong nr, bool unsigned_val)
|
|
{ return Field_bit::store(nr, unsigned_val); }
|
|
void sql_type(String &str) const;
|
|
};
|
|
|
|
|
|
/*
|
|
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;
|
|
/*
|
|
At various stages in execution this can be length of field in bytes or
|
|
max number of characters.
|
|
*/
|
|
ulong length;
|
|
/*
|
|
The value of `length' as set by parser: is the number of characters
|
|
for most of the types, or of bytes for BLOBs or numeric types.
|
|
*/
|
|
uint32 char_length;
|
|
uint decimals, flags, pack_length, key_length;
|
|
Field::utype unireg_check;
|
|
TYPELIB *interval; // Which interval to use
|
|
TYPELIB *save_interval; // Temporary copy for the above
|
|
// Used only for UCS2 intervals
|
|
List<String> interval_list;
|
|
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);
|
|
/* Used to make a clone of this object for ALTER/CREATE TABLE */
|
|
create_field *clone(MEM_ROOT *mem_root) const
|
|
{ return new (mem_root) create_field(*this); }
|
|
void create_length_to_internal_length(void);
|
|
|
|
/* Init for a tmp table field. To be extended if need be. */
|
|
void init_for_tmp_table(enum_field_types sql_type_arg,
|
|
uint32 max_length, uint32 decimals,
|
|
bool maybe_null, bool is_unsigned);
|
|
|
|
bool init(THD *thd, char *field_name, enum_field_types type, char *length,
|
|
char *decimals, uint type_modifier, Item *default_value,
|
|
Item *on_update_value, LEX_STRING *comment, char *change,
|
|
List<String> *interval_list, CHARSET_INFO *cs,
|
|
uint uint_geom_type);
|
|
};
|
|
|
|
|
|
/*
|
|
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(TABLE_SHARE *share, 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);
|
|
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);
|
|
|
|
/*
|
|
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 // mangled with decimals!
|
|
#define FIELDFLAG_BITFIELD 512 // mangled with decimals!
|
|
#define FIELDFLAG_BLOB 1024 // mangled with decimals!
|
|
#define FIELDFLAG_GEOM 2048 // mangled with decimals!
|
|
|
|
#define FIELDFLAG_TREAT_BIT_AS_CHAR 4096 /* use Field_bit_as_char */
|
|
|
|
#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
|
|
#define FIELDFLAG_DEC_SHIFT 8
|
|
#define FIELDFLAG_MAX_DEC 31
|
|
#define FIELDFLAG_NUM_SCREEN_TYPE 0x7F01
|
|
#define FIELDFLAG_ALFA_SCREEN_TYPE 0x7800
|
|
|
|
#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 | FIELDFLAG_NUMBER)) == FIELDFLAG_INTERVAL)
|
|
#define f_is_bitfield(x) (((x) & (FIELDFLAG_BITFIELD | FIELDFLAG_NUMBER)) == FIELDFLAG_BITFIELD)
|
|
#define f_is_blob(x) (((x) & (FIELDFLAG_BLOB | FIELDFLAG_NUMBER)) == FIELDFLAG_BLOB)
|
|
#define f_is_geom(x) (((x) & (FIELDFLAG_GEOM | FIELDFLAG_NUMBER)) == 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)
|
|
#define f_no_default(x) (x & FIELDFLAG_NO_DEFAULT)
|
|
#define f_bit_as_char(x) ((x) & FIELDFLAG_TREAT_BIT_AS_CHAR)
|