mirror of
https://github.com/MariaDB/server.git
synced 2025-01-23 23:34:34 +01:00
01d03e7b4b
Changes that requires code changes in other code of other storage engines.
(Note that all changes are very straightforward and one should find all issues
by compiling a --debug build and fixing all compiler errors and all
asserts in field.cc while running the test suite),
- New optional handler function introduced: reset()
This is called after every DML statement to make it easy for a handler to
statement specific cleanups.
(The only case it's not called is if force the file to be closed)
- handler::extra(HA_EXTRA_RESET) is removed. Code that was there before
should be moved to handler::reset()
- table->read_set contains a bitmap over all columns that are needed
in the query. read_row() and similar functions only needs to read these
columns
- table->write_set contains a bitmap over all columns that will be updated
in the query. write_row() and update_row() only needs to update these
columns.
The above bitmaps should now be up to date in all context
(including ALTER TABLE, filesort()).
The handler is informed of any changes to the bitmap after
fix_fields() by calling the virtual function
handler::column_bitmaps_signal(). If the handler does caching of
these bitmaps (instead of using table->read_set, table->write_set),
it should redo the caching in this code. as the signal() may be sent
several times, it's probably best to set a variable in the signal
and redo the caching on read_row() / write_row() if the variable was
set.
- Removed the read_set and write_set bitmap objects from the handler class
- Removed all column bit handling functions from the handler class.
(Now one instead uses the normal bitmap functions in my_bitmap.c instead
of handler dedicated bitmap functions)
- field->query_id is removed. One should instead instead check
table->read_set and table->write_set if a field is used in the query.
- handler::extra(HA_EXTRA_RETRIVE_ALL_COLS) and
handler::extra(HA_EXTRA_RETRIEVE_PRIMARY_KEY) are removed. One should now
instead use table->read_set to check for which columns to retrieve.
- If a handler needs to call Field->val() or Field->store() on columns
that are not used in the query, one should install a temporary
all-columns-used map while doing so. For this, we provide the following
functions:
my_bitmap_map *old_map= dbug_tmp_use_all_columns(table, table->read_set);
field->val();
dbug_tmp_restore_column_map(table->read_set, old_map);
and similar for the write map:
my_bitmap_map *old_map= dbug_tmp_use_all_columns(table, table->write_set);
field->val();
dbug_tmp_restore_column_map(table->write_set, old_map);
If this is not done, you will sooner or later hit a DBUG_ASSERT
in the field store() / val() functions.
(For not DBUG binaries, the dbug_tmp_restore_column_map() and
dbug_tmp_restore_column_map() are inline dummy functions and should
be optimized away be the compiler).
- If one needs to temporary set the column map for all binaries (and not
just to avoid the DBUG_ASSERT() in the Field::store() / Field::val()
methods) one should use the functions tmp_use_all_columns() and
tmp_restore_column_map() instead of the above dbug_ variants.
- All 'status' fields in the handler base class (like records,
data_file_length etc) are now stored in a 'stats' struct. This makes
it easier to know what status variables are provided by the base
handler. This requires some trivial variable names in the extra()
function.
- New virtual function handler::records(). This is called to optimize
COUNT(*) if (handler::table_flags() & HA_HAS_RECORDS()) is true.
(stats.records is not supposed to be an exact value. It's only has to
be 'reasonable enough' for the optimizer to be able to choose a good
optimization path).
- Non virtual handler::init() function added for caching of virtual
constants from engine.
- Removed has_transactions() virtual method. Now one should instead return
HA_NO_TRANSACTIONS in table_flags() if the table handler DOES NOT support
transactions.
- The 'xxxx_create_handler()' function now has a MEM_ROOT_root argument
that is to be used with 'new handler_name()' to allocate the handler
in the right area. The xxxx_create_handler() function is also
responsible for any initialization of the object before returning.
For example, one should change:
static handler *myisam_create_handler(TABLE_SHARE *table)
{
return new ha_myisam(table);
}
->
static handler *myisam_create_handler(TABLE_SHARE *table, MEM_ROOT *mem_root)
{
return new (mem_root) ha_myisam(table);
}
- New optional virtual function: use_hidden_primary_key().
This is called in case of an update/delete when
(table_flags() and HA_PRIMARY_KEY_REQUIRED_FOR_DELETE) is defined
but we don't have a primary key. This allows the handler to take precisions
in remembering any hidden primary key to able to update/delete any
found row. The default handler marks all columns to be read.
- handler::table_flags() now returns a ulonglong (to allow for more flags).
- New/changed table_flags()
- HA_HAS_RECORDS Set if ::records() is supported
- HA_NO_TRANSACTIONS Set if engine doesn't support transactions
- HA_PRIMARY_KEY_REQUIRED_FOR_DELETE
Set if we should mark all primary key columns for
read when reading rows as part of a DELETE
statement. If there is no primary key,
all columns are marked for read.
- HA_PARTIAL_COLUMN_READ Set if engine will not read all columns in some
cases (based on table->read_set)
- HA_PRIMARY_KEY_ALLOW_RANDOM_ACCESS
Renamed to HA_PRIMARY_KEY_REQUIRED_FOR_POSITION.
- HA_DUPP_POS Renamed to HA_DUPLICATE_POS
- HA_REQUIRES_KEY_COLUMNS_FOR_DELETE
Set this if we should mark ALL key columns for
read when when reading rows as part of a DELETE
statement. In case of an update we will mark
all keys for read for which key part changed
value.
- HA_STATS_RECORDS_IS_EXACT
Set this if stats.records is exact.
(This saves us some extra records() calls
when optimizing COUNT(*))
- Removed table_flags()
- HA_NOT_EXACT_COUNT Now one should instead use HA_HAS_RECORDS if
handler::records() gives an exact count() and
HA_STATS_RECORDS_IS_EXACT if stats.records is exact.
- HA_READ_RND_SAME Removed (no one supported this one)
- Removed not needed functions ha_retrieve_all_cols() and ha_retrieve_all_pk()
- Renamed handler::dupp_pos to handler::dup_pos
- Removed not used variable handler::sortkey
Upper level handler changes:
- ha_reset() now does some overall checks and calls ::reset()
- ha_table_flags() added. This is a cached version of table_flags(). The
cache is updated on engine creation time and updated on open.
MySQL level changes (not obvious from the above):
- DBUG_ASSERT() added to check that column usage matches what is set
in the column usage bit maps. (This found a LOT of bugs in current
column marking code).
- In 5.1 before, all used columns was marked in read_set and only updated
columns was marked in write_set. Now we only mark columns for which we
need a value in read_set.
- Column bitmaps are created in open_binary_frm() and open_table_from_share().
(Before this was in table.cc)
- handler::table_flags() calls are replaced with handler::ha_table_flags()
- For calling field->val() you must have the corresponding bit set in
table->read_set. For calling field->store() you must have the
corresponding bit set in table->write_set. (There are asserts in
all store()/val() functions to catch wrong usage)
- thd->set_query_id is renamed to thd->mark_used_columns and instead
of setting this to an integer value, this has now the values:
MARK_COLUMNS_NONE, MARK_COLUMNS_READ, MARK_COLUMNS_WRITE
Changed also all variables named 'set_query_id' to mark_used_columns.
- In filesort() we now inform the handler of exactly which columns are needed
doing the sort and choosing the rows.
- The TABLE_SHARE object has a 'all_set' column bitmap one can use
when one needs a column bitmap with all columns set.
(This is used for table->use_all_columns() and other places)
- The TABLE object has 3 column bitmaps:
- def_read_set Default bitmap for columns to be read
- def_write_set Default bitmap for columns to be written
- tmp_set Can be used as a temporary bitmap when needed.
The table object has also two pointer to bitmaps read_set and write_set
that the handler should use to find out which columns are used in which way.
- count() optimization now calls handler::records() instead of using
handler->stats.records (if (table_flags() & HA_HAS_RECORDS) is true).
- Added extra argument to Item::walk() to indicate if we should also
traverse sub queries.
- Added TABLE parameter to cp_buffer_from_ref()
- Don't close tables created with CREATE ... SELECT but keep them in
the table cache. (Faster usage of newly created tables).
New interfaces:
- table->clear_column_bitmaps() to initialize the bitmaps for tables
at start of new statements.
- table->column_bitmaps_set() to set up new column bitmaps and signal
the handler about this.
- table->column_bitmaps_set_no_signal() for some few cases where we need
to setup new column bitmaps but don't signal the handler (as the handler
has already been signaled about these before). Used for the momement
only in opt_range.cc when doing ROR scans.
- table->use_all_columns() to install a bitmap where all columns are marked
as use in the read and the write set.
- table->default_column_bitmaps() to install the normal read and write
column bitmaps, but not signaling the handler about this.
This is mainly used when creating TABLE instances.
- table->mark_columns_needed_for_delete(),
table->mark_columns_needed_for_delete() and
table->mark_columns_needed_for_insert() to allow us to put additional
columns in column usage maps if handler so requires.
(The handler indicates what it neads in handler->table_flags())
- table->prepare_for_position() to allow us to tell handler that it
needs to read primary key parts to be able to store them in
future table->position() calls.
(This replaces the table->file->ha_retrieve_all_pk function)
- table->mark_auto_increment_column() to tell handler are going to update
columns part of any auto_increment key.
- table->mark_columns_used_by_index() to mark all columns that is part of
an index. It will also send extra(HA_EXTRA_KEYREAD) to handler to allow
it to quickly know that it only needs to read colums that are part
of the key. (The handler can also use the column map for detecting this,
but simpler/faster handler can just monitor the extra() call).
- table->mark_columns_used_by_index_no_reset() to in addition to other columns,
also mark all columns that is used by the given key.
- table->restore_column_maps_after_mark_index() to restore to default
column maps after a call to table->mark_columns_used_by_index().
- New item function register_field_in_read_map(), for marking used columns
in table->read_map. Used by filesort() to mark all used columns
- Maintain in TABLE->merge_keys set of all keys that are used in query.
(Simplices some optimization loops)
- Maintain Field->part_of_key_not_clustered which is like Field->part_of_key
but the field in the clustered key is not assumed to be part of all index.
(used in opt_range.cc for faster loops)
- dbug_tmp_use_all_columns(), dbug_tmp_restore_column_map()
tmp_use_all_columns() and tmp_restore_column_map() functions to temporally
mark all columns as usable. The 'dbug_' version is primarily intended
inside a handler when it wants to just call Field:store() & Field::val()
functions, but don't need the column maps set for any other usage.
(ie:: bitmap_is_set() is never called)
- We can't use compare_records() to skip updates for handlers that returns
a partial column set and the read_set doesn't cover all columns in the
write set. The reason for this is that if we have a column marked only for
write we can't in the MySQL level know if the value changed or not.
The reason this worked before was that MySQL marked all to be written
columns as also to be read. The new 'optimal' bitmaps exposed this 'hidden
bug'.
- open_table_from_share() does not anymore setup temporary MEM_ROOT
object as a thread specific variable for the handler. Instead we
send the to-be-used MEMROOT to get_new_handler().
(Simpler, faster code)
Bugs fixed:
- Column marking was not done correctly in a lot of cases.
(ALTER TABLE, when using triggers, auto_increment fields etc)
(Could potentially result in wrong values inserted in table handlers
relying on that the old column maps or field->set_query_id was correct)
Especially when it comes to triggers, there may be cases where the
old code would cause lost/wrong values for NDB and/or InnoDB tables.
- Split thd->options flag OPTION_STATUS_NO_TRANS_UPDATE to two flags:
OPTION_STATUS_NO_TRANS_UPDATE and OPTION_KEEP_LOG.
This allowed me to remove some wrong warnings about:
"Some non-transactional changed tables couldn't be rolled back"
- Fixed handling of INSERT .. SELECT and CREATE ... SELECT that wrongly reset
(thd->options & OPTION_STATUS_NO_TRANS_UPDATE) which caused us to loose
some warnings about
"Some non-transactional changed tables couldn't be rolled back")
- Fixed use of uninitialized memory in ha_ndbcluster.cc::delete_table()
which could cause delete_table to report random failures.
- Fixed core dumps for some tests when running with --debug
- Added missing FN_LIBCHAR in mysql_rm_tmp_tables()
(This has probably caused us to not properly remove temporary files after
crash)
- slow_logs was not properly initialized, which could maybe cause
extra/lost entries in slow log.
- If we get an duplicate row on insert, change column map to read and
write all columns while retrying the operation. This is required by
the definition of REPLACE and also ensures that fields that are only
part of UPDATE are properly handled. This fixed a bug in NDB and
REPLACE where REPLACE wrongly copied some column values from the replaced
row.
- For table handler that doesn't support NULL in keys, we would give an error
when creating a primary key with NULL fields, even after the fields has been
automaticly converted to NOT NULL.
- Creating a primary key on a SPATIAL key, would fail if field was not
declared as NOT NULL.
Cleanups:
- Removed not used condition argument to setup_tables
- Removed not needed item function reset_query_id_processor().
- Field->add_index is removed. Now this is instead maintained in
(field->flags & FIELD_IN_ADD_INDEX)
- Field->fieldnr is removed (use field->field_index instead)
- New argument to filesort() to indicate that it should return a set of
row pointers (not used columns). This allowed me to remove some references
to sql_command in filesort and should also enable us to return column
results in some cases where we couldn't before.
- Changed column bitmap handling in opt_range.cc to be aligned with TABLE
bitmap, which allowed me to use bitmap functions instead of looping over
all fields to create some needed bitmaps. (Faster and smaller code)
- Broke up found too long lines
- Moved some variable declaration at start of function for better code
readability.
- Removed some not used arguments from functions.
(setup_fields(), mysql_prepare_insert_check_table())
- setup_fields() now takes an enum instead of an int for marking columns
usage.
- For internal temporary tables, use handler::write_row(),
handler::delete_row() and handler::update_row() instead of
handler::ha_xxxx() for faster execution.
- Changed some constants to enum's and define's.
- Using separate column read and write sets allows for easier checking
of timestamp field was set by statement.
- Remove calls to free_io_cache() as this is now done automaticly in ha_reset()
- Don't build table->normalized_path as this is now identical to table->path
(after bar's fixes to convert filenames)
- Fixed some missed DBUG_PRINT(.."%lx") to use "0x%lx" to make it easier to
do comparision with the 'convert-dbug-for-diff' tool.
Things left to do in 5.1:
- We wrongly log failed CREATE TABLE ... SELECT in some cases when using
row based logging (as shown by testcase binlog_row_mix_innodb_myisam.result)
Mats has promised to look into this.
- Test that my fix for CREATE TABLE ... SELECT is indeed correct.
(I added several test cases for this, but in this case it's better that
someone else also tests this throughly).
Lars has promosed to do this.
BitKeeper/etc/ignore:
added mysys/test_bitmap
include/base64.h:
Removed my_global.h, as this must be included first in any program
include/heap.h:
Added heap_reset() (Required by new handler interface)
include/my_base.h:
Removed HA_EXTRA_RESET. MySQL will now call ::reset() instead of ::extra(HA_EXTRA_RESET).
HA_EXTRA_RETRIVE_ALL_COLS and HA_EXTRA_RETRIVE_PRIMARY key are deleted as the column bitmaps makes these unnecessary
include/my_bitmap.h:
Remove my_pthread.h (should be included at upper level)
Introduced my_bitmap_map typedef to make it the bitmap handling more like a black box
Added bitmap_is_overlapping(), bitmap_test_and_clear(), bitmap_copy() and bitmap_cmp()
Made bitmap_set_bit(), bitmap_flip_bit(), bitmap_clear_bit() return void
include/myisam.h:
Added mi_reset() (Required by new handler interface)
include/myisammrg.h:
Added myrg_reset() (Required by new handler interface)
include/mysql_com.h:
Added flag FIELD_IN_ADD_INDEX to be able to remove Field->add_index
mysql-test/extra/binlog_tests/mix_innodb_myisam_binlog.test:
Added testing of CREATE ... SELECT in a mixed environment
(This found some bugs that Mats is going to fix shortly)
mysql-test/install_test_db.sh:
Simplify ldata usage
Added --tmpdir=. option to mysqld bootstrap (Removed some warnings when TMPDIR was wrongly set)
mysql-test/mysql-test-run.pl:
Added --tmpdir=. to bootstrap
mysql-test/mysql-test-run.sh:
Use copy instead of INSTALL_DB for master and slave databases.
(Speeds up startup time a lot!)
Remove snapshot directories at startup (removes some strange warnings)
mysql-test/r/binlog_row_mix_innodb_myisam.result:
Added testing of CREATE ... SELECT in a mixed environment
(This found some bugs that Mats is going to fix shortly)
mysql-test/r/binlog_stm_mix_innodb_myisam.result:
Added testing of CREATE ... SELECT in a mixed environment
mysql-test/r/create.result:
Some extra tests of warnings and number of tables opened by CREATE ... SELECT
mysql-test/r/federated.result:
Drop some left over tables
Added testing of multiple table update and multiple table delete (with and without keys)
mysql-test/r/func_gconcat.result:
Enable some disabled tests (converted them slightly to be predictable)
mysql-test/r/func_time.result:
Added drop of test function
mysql-test/r/innodb_mysql.result:
Added tests for CREATE ... SELECT
mysql-test/r/insert.result:
More tests
Added testing of duplicate columns in insert
mysql-test/r/loaddata.result:
Added testing LOAD DATA ... SET ...
mysql-test/r/multi_update.result:
Test multi updates and deletes using primary key and without
mysql-test/r/ndb_index_unique.result:
Better error message
mysql-test/r/ndb_replace.result:
New correct result after fixing REPLACE handling with NDB
mysql-test/r/rpl_ddl.result:
Now we don't get these (wrong) warnings anymore
mysql-test/r/view_grant.result:
Drop used views
mysql-test/t/create.test:
Some extra tests of warnings and number of tables opened by CREATE ... SELECT
mysql-test/t/federated.test:
Drop some left over tables
Added testing of multiple table update and multiple table delete (with and without keys)
mysql-test/t/func_gconcat.test:
Enable some disabled tests (converted them slightly to be predictable)
mysql-test/t/func_time.test:
Added drop of test function
mysql-test/t/innodb_mysql.test:
Added tests for CREATE ... SELECT
mysql-test/t/insert.test:
More tests
Added testing of duplicate columns in insert
mysql-test/t/loaddata.test:
Added testing LOAD DATA ... SET ...
mysql-test/t/multi_update.test:
Test multi updates and deletes using primary key and without
mysql-test/t/view_grant.test:
Drop used views
mysql-test/valgrind.supp:
Added supression of not needed warnings when printing stack trace
mysys/base64.c:
Include my_global.h first
mysys/my_bitmap.c:
Added bitmap_is_overlapping(), bitmap_test_and_clear() and bitmap_copy()
Changed logic of bitmap handling to be a bit more efficent (Did this together with Mikael Ronström)
Now the 'extra, not used bits' in the bitmap are assumed to have a 'random value' and the bitmap functions are free to change them whenever needed.
Changed how mutex is allocated to make 'bitmap_free()' function simpler.
mysys/thr_lock.c:
Added 0x before thread pointers (for easier comparison of DBUG traces)
sql/event.cc:
Ensure 'use_all_columns()' is used for event tables
Don't print warning that event table is damaged if it doesn't exists.
sql/field.cc:
Added ASSERT_COLUMN_MARKED_FOR_WRITE in all store() methods and ASSERT_COLUMN_MARKED_FOR_READ in all val() methods to catch wrong setting if table->read_set and table->write_set
(Rest of changes are only indentation cleanups)
sql/field.h:
Removed Field->query_id (replaced by table->read_set and table->write_set)
Removed Field->fieldnr (use Field->field_index instead)
Removed Field->add_index (Use Field->flags instead)
Add Field->part_of_key_not_clustered (for usage in opt_range.cc)
sql/filesort.cc:
Added paramater sort_postion to filesort() to force sorting by position instead of storing all fields in the result set.
This allowed me to remove checking of sql_command.
Create a temporary column bitmap for fields that are used by the sorting process.
Use column bitmaps instead of query_id
sql/ha_berkeley.cc:
Update to 'newer' table handler interface
sql/ha_berkeley.h:
Update to 'newer' table handler interface
sql/ha_federated.cc:
Update to 'newer' table handler interface
Only read columns that are needed from remote server.
In case of eq ranges, don't generate two conditions in the WHERE clause
(this can still be optimized, but would require a bigger code change)
Use 'simpler to use' XXXX_LEN' macros
A bit simpler logic in ::write_row() when creating statements.
In update, only include test of fields actually read.
(This greatly simplifies the queries sent by the federated engine)
Similar changes done for delete_row()
sql/ha_federated.h:
Update to 'newer' table handler interface
Changed XXX_LEN macros to use sizeof(...)-1, to simplify usage in ha_federated.cc
Added HA_PRIMARY_KEY_REQUIRED_FOR_DELETE to tell MySQL to read all primary key columns in case of DELETE
sql/ha_heap.cc:
Update to 'newer' table handler interface
sql/ha_heap.h:
Update to 'newer' table handler interface
sql/ha_innodb.cc:
Update to 'newer' table handler interface
- Update innobase_create_handler() to new interface
- Removed HA_NOT_EXACT_COUNT (not needed)
- Renamed HA_PRIMARY_KEY_ALLOW_RANDOM_ACCESS to HA_PRIMARY_KEY_REQUIRED_FOR_POSITION.
- Prefixed base status variables with 'stats'
- Use table column bitmaps instead of ha_get_bit_in_read_set()
- Added ::reset(), with code from ::extra(HA_EXTRA_RESET)
- Removed HA_EXTRA_RETRIVE_ALL_COLS and HA_EXTRA_RETRIEVE_PRIMARY_KEY as
the table->read_set and table->write_set bitmaps now are accurate
sql/ha_innodb.h:
Update to 'newer' table handler interface
- table_flags are now ulonglong
- Added reset() method
- Removed not needed ha_retrieve_all_cols() and ha_retrieve_all_pk() columns.
- Made build_template() a class function to be able to easier access class variables
sql/ha_myisam.cc:
Update to 'newer' table handler interface
sql/ha_myisam.h:
Update to 'newer' table handler interface
sql/ha_myisammrg.cc:
Update to 'newer' table handler interface
sql/ha_myisammrg.h:
Update to 'newer' table handler interface
sql/ha_ndbcluster.cc:
Update to 'newer' table handler interface
Fixed use_blob_value() to be accurate
In ::complemented_read() we have to check both the read and write bitmap as the old code did mark all changed columns also in the read map
Correct dumping of field data with DBUG_DUMP
Prefix addresses in DBUG_PRINT with 0x
Fixed usage of not initialized memory
Update to use field->flags & FIELD_IN_ADD_INDEX instead of field->add_index.
sql/ha_ndbcluster.h:
Update to 'newer' table handler interface
sql/ha_ndbcluster_binlog.cc:
Mark usage of all columns in ndbcluster binlog tables
false -> FALSE, true -> TRUE
Use table->s->all_set instead of creating a temporary bitmap.
sql/ha_partition.cc:
Update to 'newer' table handler interface
Added memroot to initialise_partitions() and related functions to get faster memory allocation.
partition_create_handler() is now responsible for initialisation of the partition object
Some trivial optimizations and indentation fixes
Ensure that table_flags() are up to date
Removed documentation for removed HA_EXTRA flags
Fixed 'strange' usage of m_file[i] in new_handlers_from_part_info()that worked in current code 'by chance'
sql/ha_partition.h:
Update to 'newer' table handler interface
sql/handler.cc:
create_xxx handler now takes MEMROOT as an argument to simplify memory allocation.
Much simpler get_new_handler()
(Initialization of the object is now handled by the create method for the engine)
Moved all allocation of bitmap handling to the TABLE object (in table.cc)
Added column_bitmaps_signal() to signal column usage changes.
Changed binlog_log_row() to use the exiusting all_set bitmap in the table object.
Added ha_reset() function to test that the file object is ok at end of statement and call handler::reset()
Added use_hidden_primary_key() to signal handler that we we are going to read and update + delete the row and the handler should thus remember the position for the row
sql/handler.h:
Added HA_NO_TRANSACTIONS, HA_PARTIAL_COLUMN_READ, HA_REQUIRES_KEY_COLUMNS_FOR_DELETE,HA_PRIMARY_KEY_REQUIRED_FOR_DELETE and HA_HAS_RECORDS
Removed HA_NOT_EXACT_COUNT, HA_READ_RND_SAME
HA_DUPP_POS -> HA_DUPLICATE_POS
HA_NOT_EXACT_COUNT replaced by HA_STATS_RECORDS_IS_EXACT, HA_HAS_RECORDS and records()
HA_PRIMARY_KEY_ALLOW_RANDOM_ACCESS renamed to HA_PRIMARY_KEY_REQUIRED_FOR_POSITION
Added future row type 'ROW_TYPE_PAGES'
Added MEM_ROOT to handlerton 'create' function
Added ha_statistics, a structure for all status variable in the base handler class.
Moved all status variables in the handler class into a stats structs to improve readability.
ha_table_flags() is now a cached (not virtual) version of table_flags()
reset() doesn't anymore call extra(HA_EXTRA_RESET) but is a function of it's own.
Renamed dupp_ref to dup_ref
Renamed not used handler::sortkey
Moved read_set and write_set to TABLE structure
handler::init() function added for cacheing of virtual constants from engine.
sql/item.cc:
Added register_field_in_read_map() for marking used columns in expression.
This is used by filesort() for creating an optimal column bitmap while retrieving columns for sorting.
Initalize value.cs_info.character_set_client to fix core dump bug with --debug
set_query_id -> mark_used_columns
Mark used columns in read_set OR write_set.
sql/item.h:
Removed reset_query_id_processor() as it's not needed anymore.
Added register_field_in_read_map()
Added extra argument to Item::walk() to indicate if we should also
traverse sub queries.
sql/item_cmpfunc.cc:
Temporary mark used columns to be read/writable
Update Item::walk to new interface
sql/item_cmpfunc.h:
Added extra argument to Item::walk() to indicate if we should also traverse sub queries.
sql/item_func.cc:
Update Item::walk() to new interface
table_flags() -> ha_table_flags()
sql/item_func.h:
Update Item::walk() to new interface
sql/item_row.cc:
Update Item::walk() to new interface
sql/item_row.h:
Update Item::walk() to new interface
sql/item_strfunc.h:
Update Item::walk() to new interface
sql/item_subselect.cc:
Added Item_subselect::walk()
(It was a bug it was missing before. Not sure what kind of bugs this could have caused)
sql/item_subselect.h:
Update Item::walk() to new interface
sql/item_sum.cc:
Update Item::walk() to new interface
Updates for new handler interace
sql/item_sum.h:
Update Item::walk() to new interface
sql/key.cc:
Updates for new handler interace
sql/log.cc:
Mark all columns used for log tables
Split options flag
Ensured that second argument to trans_register_ha is a bool
sql/log_event.cc:
Fixed comments to be withing 79 characters
Use OPTION_KEEP_LOG instead of OPTION_STATUS_NO_TRANS_UPDATE to remove wrong warnings
Updates for new handler interface
Use 0x%lx instead of %p (portability problem)
sql/mysql_priv.h:
Added OPTION_KEEP_LOG to indicate that we should replicate the binlog even on rollback
Removed not used 'conds' argument to setup_tables
sql/mysqld.cc:
Indentation fixes and removed old comment
sql/opt_range.cc:
Update to new handler and bitmap interface.
Fixed calls to cp_buffer_from_ref() and walk() (new argument).
Create new temporary bitmaps for ror scans.
(Needed because of handler changes and to get more accurate column bitmaps than before)
Remove not needed file->ha_reset() call before file->close().
Some trivial optimization and indentation fixes.
Use Field->part_of_key_not_clustered() to check if field is part of a key, instead of looping over all key parts.
Added flag 'in_ror_merged_scan' to allow ::get_next() to know that we need a special column bitmap to only fetch pointer to record.
This is needed because ror scan uses the same TABLE object but different file objects, which creates problem for the column bitmap handling.
(This is a temporary solution. A better one would be to allocate an own TABLE object for ROR scans)
Optimized bitmap handling in ror scans:
- Start bitmap at position 0, not 1
- Use same bitmap size as in TABLE
- Use table->read_set and table->write_set to create column bitmaps instead of looping over all fields in table
sql/opt_range.h:
Added 'in_ror_merged_scan' to indicate if we are doing a ROR scan
Added temporary column bitmaps used in ROR scans
sql/opt_sum.cc:
Added get_ext_record_count() which is used in COUNT() optimization if handler has HA_HAS_RECORDS
Note that we don't call this if handler has HA_STATS_RECORDS_IS_EXACT set.
sql/protocol.cc:
We need to mark columns as readable in ::store() as we sometimes return default value for fields to the user
sql/records.cc:
Updates for new handler interface
sql/set_var.cc:
Handle splitting OPTION_STATUS_NO_TRANS_UPDATE to two flags
sql/share/errmsg.txt:
Fixed wrong
sql/sp.cc:
Mark that we are using all columns for the proc table
Update call to setup_tables() to use new prototype
sql/sp_head.cc:
Removed QQ comment
sql/spatial.cc:
Removed wrong QQ comment
sql/sql_acl.cc:
Mark that we need all columns for acl tables
Supply memroot to some 'new' calls.
Indentation fixes
sql/sql_base.cc:
set_query_id removed
Ensure we call ha_reset() at end of each statement
Mark read columns in read_set and changed columns in write_set (Before all columns was marked in read set)
Fixed marking of some columns that was not proplerly marked before
Maintain in TABLE->merge_keys set of all keys that are used in some way
Removed not used 'conds' argument from setup_tables()
Remove not used setting of 'dupp_field' in insert_fields()
Added missing FN_LIBCHAR in mysql_rm_tmp_tables()
(This has probably caused us to not properly remove temporary files after crash)
sql/sql_bitmap.h:
Added is_overlapping()
sql/sql_class.cc:
Slow_logs was not properly initialized, which could maybe cause extra/lost entries in slow log.
set_query_id -> mark_used_columns
Simpler variable usage in pack_row() (cleanup)
Moved some variable declartion at start of function for better code readability
sql/sql_class.h:
Added enum_mark_columns
Updated comments
Renamed dupp_field -> dup_field
Added virtual function 'can_rollback_data()' to select_insert() to be used in CREATE ... SELECT to optimize use of OPTION_STATUS_NO_TRANS_UPDATE.
(This fixes a bug in CREATE ... SELECT where we did give wrong warnings when using non transacational tables)
sql/sql_delete.cc:
Updates to new handler interface
Call table->mark_columns_needed_for_delete() to allow us to put additional columns in column usage maps if handler so requires.
Call table->prepare_for_position() to tell handler that we are going to call ha_position().
Removed call to free_io_cache(). (io_cache is now removed in ha_reset()).
Fixed calls to setup_tables()
sql/sql_do.cc:
Update call to setup_fields()
sql/sql_handler.cc:
Tell handler tables to always read all columns.
Use temporary column map when storing value in field for later index usage
sql/sql_help.cc:
Makr all used fields to be read
Update call to setup_fields()
sql/sql_insert.cc:
Tell handler we are going to update the auto_increment column
dupp_field -> dup_field
Set column usage bits for timestamp field.
Call table->mark_columns_needed_for_insert() and table->mark_auto_increment_column()
Removed not used argument from mysql_prepare_insert_check_table().
If we get an duplicate row on insert, change column map to read and write all columns while retrying the operatation.
This is required by the definition of REPLACE and also ensures that fields that are only part of UPDATE are properly handled.
This fixed a bug in NDB and REPLACE where REPLACE wrongly copied some column values from the replaced row.
Setup new bitmaps for delayed insert rows
Remove reseting of next_number_fields as it will be reset on next call to handler_insert()
Fixed usage of thd->options and OPTION_STATUS_NO_TRANS_UPDATE.
The issue was that one should not to reset this flag as it may be set by a previous statement.
The way it was now used caused us to loose some warnings and get other wrong warnings when using non transactional tables mixed with transactional.
I fixed it by introducing 'select_insert::can_rollback_data' to inform send_error() that the given statement can be rolled back (which in case of CREATE TABLE can always be done)
Don't close tables created with CREATE ... SELECT but keep them in the table cache.
Moved out MY_HOOKS from inside function (better readability)
sql/sql_load.cc:
Update to use new handler and column marking interface
Update using setup_tables()
sql/sql_olap.cc:
Update calls to setup_tables
Use enums instead of constants to setup_fields()
sql/sql_parse.cc:
Handle OPTION_KEEP_LOG:
- Set it on CREATE TEMPORARY TABLE / DROP TABLE
- Reset it when OPTION_STATUS_NO_TRANS_UPDATE is reset
- Don't set it for CREATE ... SELECT (this is handled in select_create class)
Remove reseting of OPTION_STATUS_NO_TRANS_UPDATE in begin_trans() as this should already be reset.
If in autocommit mode, reset OPTION_KEEP_LOG and OPTION_STATUS_NO_TRANS_UPDATE to not give warnings in future commands
sql/sql_partition.cc:
Update walk() usage
Trivial indentation fixes
sql/sql_plugin.cc:
Mark all columns as used for plugins
sql/sql_prepare.cc:
Added assert to find out hidden bugs in character_set_client (got an error in debug binary when this not set correctly)
Updates for new handler interface
Update calls to setup_fields()
sql/sql_repl.cc:
Indentation fixes
sql/sql_select.cc:
Update call to setup_tables() and setup_fields()
Remove some old disabled code
Update to new hadler interface
Indentation cleanups
Added column bitmaps for temporary tables.
Remove updating of the removed slots in the Field class
Added TABLE argument to cp_buffer_from_ref() (To be able to install temporary column maps)
For internal temporary tables, use handler::write_row(), handler::delete_row() and handler::update_row() instead of handler::ha_xxxx() for faster execution.
sql/sql_select.h:
Indentaition fixes.
Install temporary column usage maps when needed
Added TABLE element to cp_buffer_from_ref()
sql/sql_show.cc:
Update to new handler interface
Mark all columns used for internal tables.
Style fixes.
Added support for 'future' ROW_TYPE_PAGES.
Don't allocate TMP_TABLE_PARAM with calloc. The 'init()' function will initialize the structure properly.
sql/sql_table.cc:
Update to new handler interface
Simple my_snprintf -> strmake()
Changed some constants to defines
Don't test for NULL in primary key (as we a couple of line above force the PRIMARY KEY to be NOT NULL)
Change field->add_index to use field->flags & FIELD_IN_ADD_INDEX
Mark all columns as used for ALTER TABLE
Style fixes
Update call to filesort()
sql/sql_trigger.h:
Added friend functions to be able to test if triggers exists for table we are going to insert/update or delete in.
sql/sql_udf.cc:
Mark all columns as used for udf system table.
sql/sql_union.cc:
Update call to walk()
Update to new handler interface
sql/sql_update.cc:
Remove query_id argument from compare_record()
Use column bitmaps instead of query_id.
We can't use compare_records() to skip updates for handlers that returns a partial column set and the read_set doesn't cover all columns in the write set, because compare_record() can't in this case know if a not read column changed value.
Update call to setup_fields()
Using separate column read and write sets allows for easier checking of timestamp field was set by statement.
Removed call to free_io_cache() as this is now done in ha_reset()
Call table->mark_columns_needed_for_update() and table->prepare_for_position()
Style fixes
sql/sql_view.cc:
Style fixes
sql/table.cc:
Remove implicitely include 'errno.h'
Remove code for building normalized path, as this is now identical to 'path'
Remove field->fieldnr
Added update of field->part_of_key_not_clustered()
Create column bitmaps in TABLE and TABLE_SHARE
Don't setup a temporary MEM_ROOT object as a thread specific variable for the handler. Instead we send the to-be-used MEMROOT to get_new_handler()
Update to new handler interface
Update call to walk()
Added new functions:
- st_table::clear_column_bitmaps()
- st_table::prepare_for_position()
- st_table::mark_columns_used_by_index()
- st_table::restore_column_maps_after_mark_index()
- st_table::mark_columns_used_by_index_no_reset()
- st_table::mark_auto_increment_column()
- st_table::mark_columns_needed_for_delete()
- st_table::mark_columns_needed_for_update()
- st_table::mark_columns_needed_for_insert()
sql/table.h:
Moved column usage bitmaps from handler to TABLE
Added to TABLE_SHARE all_set and column_bitmap_size
Added to TABLE merge_keys, bitmap_init_values, def_read_set, def_write_set, tmp_set, read_set and write_set.
Declared all new table column bitmap functions
Added TABLE functions column_bitmaps_set(), column_bitmaps_set_no_signal(), use_all_columns() and default_column_bitmaps()
Added functions: tmp_use_all_columns() and tmp_restore_column_map() to temporarly switch column bitmaps
Added functions: dbug_tmp_use_all_columns() and dbug_tmp_restore_column_map() to temporarly switch column bitmaps to avoid asserts in Field::store() and Field::val().
sql/tztime.cc:
Mark all columns as used for timezone tables
storage/archive/ha_archive.cc:
Update to new handler interface
storage/archive/ha_archive.h:
Update to new handler interface
storage/blackhole/ha_blackhole.cc:
Update to new handler interface
storage/blackhole/ha_blackhole.h:
Update to new handler interface
removed not needed flag HA_DUPP_POS
storage/csv/ha_tina.cc:
Update to new handler interface
storage/csv/ha_tina.h:
Update to new handler interface
storage/example/ha_example.cc:
Update to new handler interface
storage/example/ha_example.h:
Update to new handler interface
storage/heap/hp_extra.c:
Added heap_reset() (Required by new handler interface)
storage/heap/hp_test2.c:
Use heap_reset()
storage/myisam/ft_boolean_search.c:
Fixed compiler warning
storage/myisam/mi_extra.c:
Added mi_reset() (Required by new handler interface)
storage/myisam/mi_search.c:
Fixed DBUG_PRINT messages to use 0x%lx instead of %lx
storage/myisam/mi_test2.c:
Use mi_reset()
storage/myisam/myisampack.c:
Use mi_reset()
storage/myisammrg/myrg_extra.c:
Added myrg_reset() (Required by new handler interface)
unittest/mysys/base64.t.c:
Include my_global.h
Don't include implictely include file 'stdlib.h'
1562 lines
59 KiB
C++
1562 lines
59 KiB
C++
/* Copyright (C) 2000 MySQL AB & MySQL Finland AB & TCX DataKonsult AB
|
|
|
|
This program is free software; you can redistribute it and/or modify
|
|
it under the terms of the GNU General Public License as published by
|
|
the Free Software Foundation; either version 2 of the License, or
|
|
(at your option) any later version.
|
|
|
|
This program is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
GNU General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with this program; if not, write to the Free Software
|
|
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
|
|
|
|
|
|
/*
|
|
Because of the function new_field() all field classes that have static
|
|
variables must declare the size_of() member function.
|
|
*/
|
|
|
|
#ifdef USE_PRAGMA_INTERFACE
|
|
#pragma interface /* gcc class implementation */
|
|
#endif
|
|
|
|
#define NOT_FIXED_DEC 31
|
|
#define DATETIME_DEC 6
|
|
|
|
class Send_field;
|
|
class Protocol;
|
|
class create_field;
|
|
struct st_cache_field;
|
|
void field_conv(Field *to,Field *from);
|
|
|
|
inline uint get_enum_pack_length(int elements)
|
|
{
|
|
return elements < 256 ? 1 : 2;
|
|
}
|
|
|
|
inline uint get_set_pack_length(int elements)
|
|
{
|
|
uint len= (elements + 7) / 8;
|
|
return len > 4 ? 8 : len;
|
|
}
|
|
|
|
class Field
|
|
{
|
|
Field(const Item &); /* Prevent use of these */
|
|
void operator=(Field &);
|
|
public:
|
|
static void *operator new(size_t size) {return (void*) sql_alloc((uint) size); }
|
|
static void operator delete(void *ptr_arg, size_t size) { TRASH(ptr_arg, size); }
|
|
|
|
char *ptr; // Position to field in record
|
|
uchar *null_ptr; // Byte where null_bit is
|
|
/*
|
|
Note that you can use table->in_use as replacement for current_thd member
|
|
only inside of val_*() and store() members (e.g. you can't use it in cons)
|
|
*/
|
|
struct st_table *table; // Pointer for table
|
|
struct st_table *orig_table; // Pointer to original table
|
|
const char **table_name, *field_name;
|
|
LEX_STRING comment;
|
|
/* Field is part of the following keys */
|
|
key_map key_start, part_of_key, part_of_key_not_clustered;
|
|
key_map part_of_sortkey;
|
|
/*
|
|
We use three additional unireg types for TIMESTAMP to overcome limitation
|
|
of current binary format of .frm file. We'd like to be able to support
|
|
NOW() as default and on update value for such fields but unable to hold
|
|
this info anywhere except unireg_check field. This issue will be resolved
|
|
in more clean way with transition to new text based .frm format.
|
|
See also comment for Field_timestamp::Field_timestamp().
|
|
*/
|
|
enum utype { NONE,DATE,SHIELD,NOEMPTY,CASEUP,PNR,BGNR,PGNR,YES,NO,REL,
|
|
CHECK,EMPTY,UNKNOWN_FIELD,CASEDN,NEXT_NUMBER,INTERVAL_FIELD,
|
|
BIT_FIELD, TIMESTAMP_OLD_FIELD, CAPITALIZE, BLOB_FIELD,
|
|
TIMESTAMP_DN_FIELD, TIMESTAMP_UN_FIELD, TIMESTAMP_DNUN_FIELD};
|
|
enum geometry_type
|
|
{
|
|
GEOM_GEOMETRY = 0, GEOM_POINT = 1, GEOM_LINESTRING = 2, GEOM_POLYGON = 3,
|
|
GEOM_MULTIPOINT = 4, GEOM_MULTILINESTRING = 5, GEOM_MULTIPOLYGON = 6,
|
|
GEOM_GEOMETRYCOLLECTION = 7
|
|
};
|
|
enum imagetype { itRAW, itMBR};
|
|
|
|
utype unireg_check;
|
|
uint32 field_length; // Length of field
|
|
uint32 flags;
|
|
uint16 field_index; // field number in fields array
|
|
uchar null_bit; // Bit used to test null bit
|
|
|
|
Field(char *ptr_arg,uint32 length_arg,uchar *null_ptr_arg,uchar null_bit_arg,
|
|
utype unireg_check_arg, const char *field_name_arg);
|
|
virtual ~Field() {}
|
|
/* Store functions returns 1 on overflow and -1 on fatal error */
|
|
virtual int store(const char *to,uint length,CHARSET_INFO *cs)=0;
|
|
virtual int store(double nr)=0;
|
|
virtual int store(longlong nr, bool unsigned_val)=0;
|
|
virtual int store_decimal(const my_decimal *d)=0;
|
|
virtual int store_time(TIME *ltime, timestamp_type t_type);
|
|
virtual double val_real(void)=0;
|
|
virtual longlong val_int(void)=0;
|
|
virtual my_decimal *val_decimal(my_decimal *);
|
|
inline String *val_str(String *str) { return val_str(str, str); }
|
|
/*
|
|
val_str(buf1, buf2) gets two buffers and should use them as follows:
|
|
if it needs a temp buffer to convert result to string - use buf1
|
|
example Field_tiny::val_str()
|
|
if the value exists as a string already - use buf2
|
|
example Field_string::val_str()
|
|
consequently, buf2 may be created as 'String buf;' - no memory
|
|
will be allocated for it. buf1 will be allocated to hold a
|
|
value if it's too small. Using allocated buffer for buf2 may result in
|
|
an unnecessary free (and later, may be an alloc).
|
|
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(); }
|
|
virtual Item_result cast_to_int_type () const { return result_type(); }
|
|
static bool type_can_have_key_part(enum_field_types);
|
|
static enum_field_types field_type_merge(enum_field_types, enum_field_types);
|
|
static Item_result result_merge_type(enum_field_types);
|
|
bool eq(Field *field)
|
|
{
|
|
return (ptr == field->ptr && null_ptr == field->null_ptr &&
|
|
null_bit == field->null_bit);
|
|
}
|
|
virtual bool eq_def(Field *field);
|
|
|
|
/*
|
|
pack_length() returns size (in bytes) used to store field data in memory
|
|
(i.e. it returns the maximum size of the field in a row of the table,
|
|
which is located in RAM).
|
|
*/
|
|
virtual uint32 pack_length() const { return (uint32) field_length; }
|
|
|
|
/*
|
|
pack_length_in_rec() returns size (in bytes) used to store field data on
|
|
storage (i.e. it returns the maximal size of the field in a row of the
|
|
table, which is located on disk).
|
|
*/
|
|
virtual uint32 pack_length_in_rec() const { return pack_length(); }
|
|
virtual uint32 sort_length() 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->s->default_values -
|
|
table->record[0]);
|
|
memcpy(ptr, ptr + offset, pack_length());
|
|
if (null_ptr)
|
|
*null_ptr= ((*null_ptr & (uchar) ~null_bit) |
|
|
null_ptr[offset] & null_bit);
|
|
}
|
|
virtual bool binary() const { return 1; }
|
|
virtual bool zero_pack() const { return 1; }
|
|
virtual enum ha_base_keytype key_type() const { return HA_KEYTYPE_BINARY; }
|
|
virtual uint32 key_length() const { return pack_length(); }
|
|
virtual enum_field_types type() const =0;
|
|
virtual enum_field_types real_type() const { return type(); }
|
|
inline int cmp(const char *str) { return cmp(ptr,str); }
|
|
virtual int cmp_max(const char *a, const char *b, uint max_len)
|
|
{ return cmp(a, b); }
|
|
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 cmp(ptr,ptr+row_offset); }
|
|
virtual 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)
|
|
{ return cmp(ptr,(char*) str); }
|
|
virtual uint decimals() const { return 0; }
|
|
/*
|
|
Caller beware: sql_type can change str.Ptr, so check
|
|
ptr() to see if it changed if you are using your own buffer
|
|
in str and restore it with set() if needed
|
|
*/
|
|
virtual void sql_type(String &str) const =0;
|
|
virtual uint size_of() const =0; // For new field
|
|
inline bool is_null(uint row_offset=0)
|
|
{ return null_ptr ? (null_ptr[row_offset] & null_bit ? 1 : 0) : table->null_row; }
|
|
inline bool is_real_null(uint row_offset=0)
|
|
{ return null_ptr ? (null_ptr[row_offset] & null_bit ? 1 : 0) : 0; }
|
|
inline bool is_null_in_record(const uchar *record)
|
|
{
|
|
if (!null_ptr)
|
|
return 0;
|
|
return test(record[(uint) (null_ptr - (uchar*) table->record[0])] &
|
|
null_bit);
|
|
}
|
|
inline bool is_null_in_record_with_offset(my_ptrdiff_t offset)
|
|
{
|
|
if (!null_ptr)
|
|
return 0;
|
|
return test(null_ptr[offset] & null_bit);
|
|
}
|
|
inline void set_null(int row_offset=0)
|
|
{ if (null_ptr) null_ptr[row_offset]|= null_bit; }
|
|
inline void set_notnull(int row_offset=0)
|
|
{ if (null_ptr) null_ptr[row_offset]&= (uchar) ~null_bit; }
|
|
inline bool maybe_null(void) { return null_ptr != 0 || table->maybe_null; }
|
|
inline bool real_maybe_null(void) { return null_ptr != 0; }
|
|
virtual void make_field(Send_field *);
|
|
virtual void sort_string(char *buff,uint length)=0;
|
|
virtual bool optimize_range(uint idx, uint part);
|
|
/*
|
|
This should be true for fields which, when compared with constant
|
|
items, can be casted to longlong. In this case we will at 'fix_fields'
|
|
stage cast the constant items to longlongs and at the execution stage
|
|
use field->val_int() for comparison. Used to optimize clauses like
|
|
'a_column BETWEEN date_const, date_const'.
|
|
*/
|
|
virtual bool can_be_compared_as_longlong() const { return FALSE; }
|
|
virtual void free() {}
|
|
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);
|
|
Field *clone(MEM_ROOT *mem_root, struct st_table *new_table);
|
|
inline void move_field(char *ptr_arg,uchar *null_ptr_arg,uchar null_bit_arg)
|
|
{
|
|
ptr=ptr_arg; null_ptr=null_ptr_arg; null_bit=null_bit_arg;
|
|
}
|
|
inline void move_field(char *ptr_arg) { ptr=ptr_arg; }
|
|
virtual void move_field_offset(my_ptrdiff_t ptr_diff)
|
|
{
|
|
ptr=ADD_TO_PTR(ptr,ptr_diff,char*);
|
|
if (null_ptr)
|
|
null_ptr=ADD_TO_PTR(null_ptr,ptr_diff,uchar*);
|
|
}
|
|
inline void get_image(char *buff,uint length, CHARSET_INFO *cs)
|
|
{ memcpy(buff,ptr,length); }
|
|
inline void set_image(char *buff,uint length, CHARSET_INFO *cs)
|
|
{ memcpy(ptr,buff,length); }
|
|
virtual void get_key_image(char *buff, uint length, 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;
|
|
longlong tmp=val_int();
|
|
ptr-=row_offset;
|
|
return tmp;
|
|
}
|
|
inline longlong val_int(char *new_ptr)
|
|
{
|
|
char *old_ptr= ptr;
|
|
longlong return_value;
|
|
ptr= new_ptr;
|
|
return_value= val_int();
|
|
ptr= old_ptr;
|
|
return return_value;
|
|
}
|
|
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)
|
|
{
|
|
uint32 length=pack_length();
|
|
memcpy(to,from,length);
|
|
return to+length;
|
|
}
|
|
virtual const char *unpack(char* to, const char *from)
|
|
{
|
|
uint length=pack_length();
|
|
memcpy(to,from,length);
|
|
return from+length;
|
|
}
|
|
virtual char *pack_key(char* to, const char *from, uint max_length)
|
|
{
|
|
return pack(to,from,max_length);
|
|
}
|
|
virtual char *pack_key_from_key_image(char* to, const char *from,
|
|
uint max_length)
|
|
{
|
|
return pack(to,from,max_length);
|
|
}
|
|
virtual const char *unpack_key(char* to, const char *from, uint max_length)
|
|
{
|
|
return unpack(to,from);
|
|
}
|
|
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(); // Should be inline ...
|
|
void copy_from_tmp(int offset);
|
|
uint fill_cache_field(struct st_cache_field *copy);
|
|
virtual bool get_date(TIME *ltime,uint fuzzydate);
|
|
virtual bool get_time(TIME *ltime);
|
|
virtual CHARSET_INFO *charset(void) const { return &my_charset_bin; }
|
|
virtual CHARSET_INFO *sort_charset(void) const { return charset(); }
|
|
virtual bool has_charset(void) const { return FALSE; }
|
|
virtual void set_charset(CHARSET_INFO *charset) { }
|
|
bool set_warning(MYSQL_ERROR::enum_warning_level, 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(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_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;
|
|
}
|
|
|
|
friend bool reopen_table(THD *,struct st_table *,bool);
|
|
friend int cre_myisam(my_string name, register TABLE *form, uint options,
|
|
ulonglong auto_increment_value);
|
|
friend class Copy_field;
|
|
friend class Item_avg_field;
|
|
friend class Item_std_field;
|
|
friend class Item_sum_num;
|
|
friend class Item_sum_sum;
|
|
friend class Item_sum_str;
|
|
friend class Item_sum_count;
|
|
friend class Item_sum_avg;
|
|
friend class Item_sum_std;
|
|
friend class Item_sum_min;
|
|
friend class Item_sum_max;
|
|
friend class Item_func_group_concat;
|
|
};
|
|
|
|
|
|
class Field_num :public Field {
|
|
public:
|
|
const uint8 dec;
|
|
bool zerofill,unsigned_flag; // Purify cannot handle bit fields
|
|
Field_num(char *ptr_arg,uint32 len_arg, uchar *null_ptr_arg,
|
|
uchar null_bit_arg, utype unireg_check_arg,
|
|
const char *field_name_arg,
|
|
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);
|
|
};
|
|
|
|
|
|
class Field_str :public Field {
|
|
protected:
|
|
CHARSET_INFO *field_charset;
|
|
public:
|
|
Field_str(char *ptr_arg,uint32 len_arg, uchar *null_ptr_arg,
|
|
uchar null_bit_arg, utype unireg_check_arg,
|
|
const char *field_name_arg, 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) { field_charset=charset; }
|
|
bool binary() const { return field_charset == &my_charset_bin; }
|
|
uint32 max_length() { return field_length; }
|
|
friend class create_field;
|
|
my_decimal *val_decimal(my_decimal *);
|
|
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)
|
|
:Field_str(ptr_arg, len_arg, null_ptr_arg, null_bit_arg, unireg_check_arg,
|
|
field_name_arg, charset)
|
|
{}
|
|
|
|
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 *);
|
|
};
|
|
|
|
|
|
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 FIELD_TYPE_DECIMAL;}
|
|
enum ha_base_keytype key_type() const
|
|
{ return zerofill ? HA_KEYTYPE_BINARY : HA_KEYTYPE_NUM; }
|
|
void reset(void);
|
|
int store(const char *to,uint length,CHARSET_INFO *charset);
|
|
int store(double nr);
|
|
int store(longlong nr, 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;
|
|
uint32 max_length() { return field_length; }
|
|
};
|
|
|
|
|
|
/* 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 FIELD_TYPE_NEWDECIMAL;}
|
|
enum ha_base_keytype key_type() const { return HA_KEYTYPE_BINARY; }
|
|
Item_result result_type () const { return DECIMAL_RESULT; }
|
|
void 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_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_length() { return field_length; }
|
|
uint size_of() const { return sizeof(*this); }
|
|
uint32 pack_length() const { return (uint32) bin_size; }
|
|
};
|
|
|
|
|
|
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 FIELD_TYPE_TINY;}
|
|
enum ha_base_keytype key_type() const
|
|
{ return unsigned_flag ? HA_KEYTYPE_BINARY : HA_KEYTYPE_INT8; }
|
|
int store(const char *to,uint length,CHARSET_INFO *charset);
|
|
int store(double nr);
|
|
int store(longlong nr, bool unsigned_val);
|
|
void reset(void) { ptr[0]=0; }
|
|
double val_real(void);
|
|
longlong val_int(void);
|
|
String *val_str(String*,String *);
|
|
bool send_binary(Protocol *protocol);
|
|
int cmp(const char *,const char*);
|
|
void sort_string(char *buff,uint length);
|
|
uint32 pack_length() const { return 1; }
|
|
void sql_type(String &str) const;
|
|
uint32 max_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 FIELD_TYPE_SHORT;}
|
|
enum ha_base_keytype key_type() const
|
|
{ return unsigned_flag ? HA_KEYTYPE_USHORT_INT : HA_KEYTYPE_SHORT_INT;}
|
|
int store(const char *to,uint length,CHARSET_INFO *charset);
|
|
int store(double nr);
|
|
int store(longlong nr, bool unsigned_val);
|
|
void reset(void) { ptr[0]=ptr[1]=0; }
|
|
double val_real(void);
|
|
longlong val_int(void);
|
|
String *val_str(String*,String *);
|
|
bool send_binary(Protocol *protocol);
|
|
int cmp(const char *,const char*);
|
|
void sort_string(char *buff,uint length);
|
|
uint32 pack_length() const { return 2; }
|
|
void sql_type(String &str) const;
|
|
uint32 max_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 FIELD_TYPE_INT24;}
|
|
enum ha_base_keytype key_type() const
|
|
{ return unsigned_flag ? HA_KEYTYPE_UINT24 : HA_KEYTYPE_INT24; }
|
|
int store(const char *to,uint length,CHARSET_INFO *charset);
|
|
int store(double nr);
|
|
int store(longlong nr, bool unsigned_val);
|
|
void reset(void) { ptr[0]=ptr[1]=ptr[2]=0; }
|
|
double val_real(void);
|
|
longlong val_int(void);
|
|
String *val_str(String*,String *);
|
|
bool send_binary(Protocol *protocol);
|
|
int cmp(const char *,const char*);
|
|
void sort_string(char *buff,uint length);
|
|
uint32 pack_length() const { return 3; }
|
|
void sql_type(String &str) const;
|
|
uint32 max_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 FIELD_TYPE_LONG;}
|
|
enum ha_base_keytype key_type() const
|
|
{ return unsigned_flag ? HA_KEYTYPE_ULONG_INT : HA_KEYTYPE_LONG_INT; }
|
|
int store(const char *to,uint length,CHARSET_INFO *charset);
|
|
int store(double nr);
|
|
int store(longlong nr, bool unsigned_val);
|
|
void reset(void) { ptr[0]=ptr[1]=ptr[2]=ptr[3]=0; }
|
|
double val_real(void);
|
|
longlong val_int(void);
|
|
bool send_binary(Protocol *protocol);
|
|
String *val_str(String*,String *);
|
|
int cmp(const char *,const char*);
|
|
void sort_string(char *buff,uint length);
|
|
uint32 pack_length() const { return 4; }
|
|
void sql_type(String &str) const;
|
|
uint32 max_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 FIELD_TYPE_LONGLONG;}
|
|
enum ha_base_keytype key_type() const
|
|
{ return unsigned_flag ? HA_KEYTYPE_ULONGLONG : HA_KEYTYPE_LONGLONG; }
|
|
int store(const char *to,uint length,CHARSET_INFO *charset);
|
|
int store(double nr);
|
|
int store(longlong nr, bool unsigned_val);
|
|
void reset(void) { ptr[0]=ptr[1]=ptr[2]=ptr[3]=ptr[4]=ptr[5]=ptr[6]=ptr[7]=0; }
|
|
double val_real(void);
|
|
longlong val_int(void);
|
|
String *val_str(String*,String *);
|
|
bool send_binary(Protocol *protocol);
|
|
int cmp(const char *,const char*);
|
|
void sort_string(char *buff,uint length);
|
|
uint32 pack_length() const { return 8; }
|
|
void sql_type(String &str) const;
|
|
bool can_be_compared_as_longlong() const { return TRUE; }
|
|
uint32 max_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 FIELD_TYPE_FLOAT;}
|
|
enum ha_base_keytype key_type() const { return HA_KEYTYPE_FLOAT; }
|
|
int store(const char *to,uint length,CHARSET_INFO *charset);
|
|
int store(double nr);
|
|
int store(longlong nr, bool unsigned_val);
|
|
void reset(void) { bzero(ptr,sizeof(float)); }
|
|
double val_real(void);
|
|
longlong val_int(void);
|
|
String *val_str(String*,String *);
|
|
bool send_binary(Protocol *protocol);
|
|
int cmp(const char *,const char*);
|
|
void sort_string(char *buff,uint length);
|
|
uint32 pack_length() const { return sizeof(float); }
|
|
void sql_type(String &str) const;
|
|
uint32 max_length() { return 24; }
|
|
};
|
|
|
|
|
|
class Field_double :public Field_real {
|
|
public:
|
|
Field_double(char *ptr_arg, uint32 len_arg, uchar *null_ptr_arg,
|
|
uchar null_bit_arg,
|
|
enum utype unireg_check_arg, const char *field_name_arg,
|
|
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_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)
|
|
{}
|
|
enum_field_types type() const { return FIELD_TYPE_DOUBLE;}
|
|
enum ha_base_keytype key_type() const { return HA_KEYTYPE_DOUBLE; }
|
|
int store(const char *to,uint length,CHARSET_INFO *charset);
|
|
int store(double nr);
|
|
int store(longlong nr, bool unsigned_val);
|
|
void reset(void) { bzero(ptr,sizeof(double)); }
|
|
double val_real(void);
|
|
longlong val_int(void);
|
|
String *val_str(String*,String *);
|
|
bool send_binary(Protocol *protocol);
|
|
int cmp(const char *,const char*);
|
|
void sort_string(char *buff,uint length);
|
|
uint32 pack_length() const { return sizeof(double); }
|
|
void sql_type(String &str) const;
|
|
uint32 max_length() { return 53; }
|
|
};
|
|
|
|
|
|
/* 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 FIELD_TYPE_NULL;}
|
|
int store(const char *to, uint length, CHARSET_INFO *cs)
|
|
{ null[0]=1; return 0; }
|
|
int store(double nr) { null[0]=1; return 0; }
|
|
int store(longlong nr, bool unsigned_val) { null[0]=1; return 0; }
|
|
int store_decimal(const my_decimal *d) { null[0]=1; return 0; }
|
|
void reset(void) {}
|
|
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_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);
|
|
enum_field_types type() const { return FIELD_TYPE_TIMESTAMP;}
|
|
enum ha_base_keytype key_type() const { return HA_KEYTYPE_ULONG_INT; }
|
|
enum Item_result cmp_type () const { return INT_RESULT; }
|
|
int store(const char *to,uint length,CHARSET_INFO *charset);
|
|
int store(double nr);
|
|
int store(longlong nr, bool unsigned_val);
|
|
void reset(void) { ptr[0]=ptr[1]=ptr[2]=ptr[3]=0; }
|
|
double val_real(void);
|
|
longlong val_int(void);
|
|
String *val_str(String*,String *);
|
|
bool send_binary(Protocol *protocol);
|
|
int cmp(const char *,const char*);
|
|
void sort_string(char *buff,uint length);
|
|
uint32 pack_length() const { return 4; }
|
|
void sql_type(String &str) const;
|
|
bool 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->s->db_low_byte_first)
|
|
return sint4korr(ptr);
|
|
#endif
|
|
long tmp;
|
|
longget(tmp,ptr);
|
|
return tmp;
|
|
}
|
|
bool get_date(TIME *ltime,uint fuzzydate);
|
|
bool get_time(TIME *ltime);
|
|
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 FIELD_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 FIELD_TYPE_DATE;}
|
|
enum ha_base_keytype key_type() const { return HA_KEYTYPE_ULONG_INT; }
|
|
enum Item_result cmp_type () const { return INT_RESULT; }
|
|
int store(const char *to,uint length,CHARSET_INFO *charset);
|
|
int store(double nr);
|
|
int store(longlong nr, bool unsigned_val);
|
|
void reset(void) { ptr[0]=ptr[1]=ptr[2]=ptr[3]=0; }
|
|
double val_real(void);
|
|
longlong val_int(void);
|
|
String *val_str(String*,String *);
|
|
bool send_binary(Protocol *protocol);
|
|
int cmp(const char *,const char*);
|
|
void sort_string(char *buff,uint length);
|
|
uint32 pack_length() const { return 4; }
|
|
void sql_type(String &str) const;
|
|
bool 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 FIELD_TYPE_DATE;}
|
|
enum_field_types real_type() const { return FIELD_TYPE_NEWDATE; }
|
|
enum ha_base_keytype key_type() const { return HA_KEYTYPE_UINT24; }
|
|
enum Item_result cmp_type () const { return INT_RESULT; }
|
|
int store(const char *to,uint length,CHARSET_INFO *charset);
|
|
int store(double nr);
|
|
int store(longlong nr, bool unsigned_val);
|
|
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);
|
|
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(TIME *ltime,uint fuzzydate);
|
|
bool get_time(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 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, bool unsigned_val);
|
|
void reset(void) { ptr[0]=ptr[1]=ptr[2]=0; }
|
|
double val_real(void);
|
|
longlong val_int(void);
|
|
String *val_str(String*,String *);
|
|
bool get_date(TIME *ltime, uint fuzzydate);
|
|
bool send_binary(Protocol *protocol);
|
|
bool get_time(TIME *ltime);
|
|
int cmp(const char *,const char*);
|
|
void sort_string(char *buff,uint length);
|
|
uint32 pack_length() const { return 3; }
|
|
void sql_type(String &str) const;
|
|
bool 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 FIELD_TYPE_DATETIME;}
|
|
#ifdef HAVE_LONG_LONG
|
|
enum ha_base_keytype key_type() const { return HA_KEYTYPE_ULONGLONG; }
|
|
#endif
|
|
enum Item_result cmp_type () const { return INT_RESULT; }
|
|
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(TIME *ltime, timestamp_type type);
|
|
void reset(void) { ptr[0]=ptr[1]=ptr[2]=ptr[3]=ptr[4]=ptr[5]=ptr[6]=ptr[7]=0; }
|
|
double val_real(void);
|
|
longlong val_int(void);
|
|
String *val_str(String*,String *);
|
|
bool send_binary(Protocol *protocol);
|
|
int cmp(const char *,const char*);
|
|
void sort_string(char *buff,uint length);
|
|
uint32 pack_length() const { return 8; }
|
|
void sql_type(String &str) const;
|
|
bool can_be_compared_as_longlong() const { return TRUE; }
|
|
bool zero_pack() const { return 1; }
|
|
bool get_date(TIME *ltime,uint fuzzydate);
|
|
bool get_time(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; }
|
|
void reset(void) { charset()->cset->fill(charset(),ptr,field_length,' '); }
|
|
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 FIELD_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);
|
|
};
|
|
|
|
|
|
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; }
|
|
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; }
|
|
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);
|
|
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);
|
|
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 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);
|
|
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);
|
|
};
|
|
|
|
|
|
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;
|
|
}
|
|
enum_field_types type() const { return FIELD_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);
|
|
}
|
|
void reset(void) { bzero(ptr, packlength+sizeof(char*)); }
|
|
void reset_fields() { bzero((char*) &value,sizeof(value)); }
|
|
void store_length(uint32 number);
|
|
inline uint32 get_length(uint row_offset=0)
|
|
{ return get_length(ptr+row_offset); }
|
|
uint32 get_length(const char *ptr);
|
|
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*));
|
|
}
|
|
inline void set_ptr(uint32 length,char *data)
|
|
{
|
|
store_length(length);
|
|
memcpy_fixed(ptr+packlength,&data,sizeof(char*));
|
|
}
|
|
void get_key_image(char *buff,uint length, 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 void field_conv(Field *to,Field *from);
|
|
uint size_of() const { return sizeof(*this); }
|
|
bool has_charset(void) const
|
|
{ return charset() == &my_charset_bin ? FALSE : TRUE; }
|
|
uint32 max_length();
|
|
};
|
|
|
|
|
|
#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 FIELD_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 *);
|
|
void get_key_image(char *buff,uint length,imagetype type);
|
|
uint size_of() const { return sizeof(*this); }
|
|
};
|
|
#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;
|
|
}
|
|
enum_field_types type() const { return FIELD_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);
|
|
void reset() { bzero(ptr,packlength); }
|
|
double val_real(void);
|
|
longlong val_int(void);
|
|
String *val_str(String*,String *);
|
|
int cmp(const char *,const char*);
|
|
void sort_string(char *buff,uint length);
|
|
uint32 pack_length() const { return (uint32) packlength; }
|
|
void store_type(ulonglong value);
|
|
void sql_type(String &str) const;
|
|
uint size_of() const { return sizeof(*this); }
|
|
enum_field_types real_type() const { return FIELD_TYPE_ENUM; }
|
|
virtual bool zero_pack() const { return 0; }
|
|
bool optimize_range(uint idx, 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 FIELD_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 FIELD_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_length() { return field_length; }
|
|
uint size_of() const { return sizeof(*this); }
|
|
Item_result result_type () const { return INT_RESULT; }
|
|
void reset(void) { bzero(ptr, bytes_in_rec); }
|
|
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 *);
|
|
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);
|
|
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 + 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);
|
|
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;
|
|
}
|
|
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*);
|
|
}
|
|
};
|
|
|
|
|
|
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
|
|
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);
|
|
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)
|