Gecko [ www.leshallesdegournay.geraud-market.com ]

Name	Size	Permission	Date
atomic	[ DIR ]	drwxr-xr-x	2022-05-23 22:35
authors.h	9.35 KB	-rw-r--r--	2022-05-18 13:19
bounded_queue.h	6.61 KB	-rw-r--r--	2022-05-18 13:19
client_settings.h	1.89 KB	-rw-r--r--	2022-05-18 13:19
compat56.h	1.95 KB	-rw-r--r--	2022-05-18 13:19
config.h	14.49 KB	-rw-r--r--	2022-05-18 14:40
contributors.h	2.92 KB	-rw-r--r--	2022-05-18 13:19
create_options.h	4.21 KB	-rw-r--r--	2022-05-18 13:19
custom_conf.h	1.06 KB	-rw-r--r--	2022-05-18 13:19
datadict.h	1.48 KB	-rw-r--r--	2022-05-18 13:19
debug_sync.h	1.73 KB	-rw-r--r--	2022-05-18 13:19
derror.h	1.02 KB	-rw-r--r--	2022-05-18 13:19
des_key_file.h	1.21 KB	-rw-r--r--	2022-05-18 13:19
discover.h	1.57 KB	-rw-r--r--	2022-05-18 13:19
dur_prop.h	1.06 KB	-rw-r--r--	2022-05-18 13:19
embedded_priv.h	1.47 KB	-rw-r--r--	2022-05-18 13:19
event_data_objects.h	3.84 KB	-rw-r--r--	2022-05-18 13:19
event_db_repository.h	3.41 KB	-rw-r--r--	2022-05-18 13:19
event_parse_data.h	2.87 KB	-rw-r--r--	2022-05-18 13:19
event_queue.h	3.29 KB	-rw-r--r--	2022-05-18 13:19
event_scheduler.h	3.21 KB	-rw-r--r--	2022-05-18 13:19
events.h	4.43 KB	-rw-r--r--	2022-05-18 13:19
field.h	147.53 KB	-rw-r--r--	2022-05-18 13:19
filesort.h	4.61 KB	-rw-r--r--	2022-05-18 13:19
filesort_utils.h	4 KB	-rw-r--r--	2022-05-18 13:19
ft_global.h	3.04 KB	-rw-r--r--	2022-05-18 13:19
gcalc_slicescan.h	16.86 KB	-rw-r--r--	2022-05-18 13:19
gcalc_tools.h	11.38 KB	-rw-r--r--	2022-05-18 13:19
group_by_handler.h	3.08 KB	-rw-r--r--	2022-05-18 13:19
gstream.h	2.44 KB	-rw-r--r--	2022-05-18 13:19
ha_partition.h	50.87 KB	-rw-r--r--	2022-05-18 13:19
handler.h	155.48 KB	-rw-r--r--	2022-05-18 13:19
hash.h	4.39 KB	-rw-r--r--	2022-05-18 13:19
hash_filo.h	5.4 KB	-rw-r--r--	2022-05-18 13:19
heap.h	9.23 KB	-rw-r--r--	2022-05-18 13:19
hostname.h	5.35 KB	-rw-r--r--	2022-05-18 13:19
ilist.h	6.27 KB	-rw-r--r--	2022-05-18 13:19
init.h	955 B	-rw-r--r--	2022-05-18 13:19
innodb_priv.h	1.39 KB	-rw-r--r--	2022-05-18 13:19
item.h	203.54 KB	-rw-r--r--	2022-05-18 13:19
item_cmpfunc.h	91.97 KB	-rw-r--r--	2022-05-18 13:19
item_create.h	6.76 KB	-rw-r--r--	2022-05-18 13:19
item_func.h	80.86 KB	-rw-r--r--	2022-05-18 13:19
item_geofunc.h	23.31 KB	-rw-r--r--	2022-05-18 13:19
item_inetfunc.h	7.61 KB	-rw-r--r--	2022-05-18 13:19
item_jsonfunc.h	13.04 KB	-rw-r--r--	2022-05-18 13:19
item_row.h	4.33 KB	-rw-r--r--	2022-05-18 13:19
item_strfunc.h	46.53 KB	-rw-r--r--	2022-05-18 13:19
item_subselect.h	51.04 KB	-rw-r--r--	2022-05-18 13:19
item_sum.h	56.22 KB	-rw-r--r--	2022-05-18 13:19
item_timefunc.h	41 KB	-rw-r--r--	2022-05-18 13:19
item_windowfunc.h	22.36 KB	-rw-r--r--	2022-05-18 13:19
item_xmlfunc.h	3.42 KB	-rw-r--r--	2022-05-18 13:19
key.h	2.05 KB	-rw-r--r--	2022-05-18 13:19
keycaches.h	1.94 KB	-rw-r--r--	2022-05-18 13:19
lex.h	26.32 KB	-rw-r--r--	2022-05-18 13:19
lex_hash.h	126.06 KB	-rw-r--r--	2022-05-18 14:44
lex_symbol.h	1.29 KB	-rw-r--r--	2022-05-18 13:19
lex_token.h	37.96 KB	-rw-r--r--	2022-05-18 14:44
lf.h	6.24 KB	-rw-r--r--	2022-05-18 13:19
lock.h	2.11 KB	-rw-r--r--	2022-05-18 13:19
log.h	41.65 KB	-rw-r--r--	2022-05-18 13:19
log_event.h	158.17 KB	-rw-r--r--	2022-05-18 13:19
log_event_old.h	19.2 KB	-rw-r--r--	2022-05-18 13:19
log_slow.h	1.55 KB	-rw-r--r--	2022-05-18 13:19
maria.h	17.28 KB	-rw-r--r--	2022-05-18 13:19
mdl.h	33.03 KB	-rw-r--r--	2022-05-18 13:19
mem_root_array.h	6.77 KB	-rw-r--r--	2022-05-18 13:19
message.h	2.06 KB	-rw-r--r--	2022-05-18 13:19
multi_range_read.h	22.17 KB	-rw-r--r--	2022-05-18 13:19
my_alarm.h	2.24 KB	-rw-r--r--	2022-05-18 13:19
my_apc.h	4.61 KB	-rw-r--r--	2022-05-18 13:19
my_atomic.h	16.66 KB	-rw-r--r--	2022-05-18 13:19
my_base.h	25.05 KB	-rw-r--r--	2022-05-18 13:19
my_bit.h	3.15 KB	-rw-r--r--	2022-05-18 13:19
my_bitmap.h	5.98 KB	-rw-r--r--	2022-05-18 13:19
my_check_opt.h	2.56 KB	-rw-r--r--	2022-05-18 13:19
my_compare.h	5.36 KB	-rw-r--r--	2022-05-18 13:19
my_context.h	6.59 KB	-rw-r--r--	2022-05-18 13:19
my_cpu.h	1.45 KB	-rw-r--r--	2022-05-18 13:19
my_crypt.h	904 B	-rw-r--r--	2022-05-18 13:19
my_decimal.h	12.52 KB	-rw-r--r--	2022-05-18 13:19
my_default.h	2.47 KB	-rw-r--r--	2022-05-18 13:19
my_handler_errors.h	4.52 KB	-rw-r--r--	2022-05-18 13:19
my_json_writer.h	4.88 KB	-rw-r--r--	2022-05-18 13:19
my_libwrap.h	1.16 KB	-rw-r--r--	2022-05-18 13:19
my_md5.h	1.45 KB	-rw-r--r--	2022-05-18 13:19
my_nosys.h	1.4 KB	-rw-r--r--	2022-05-18 13:19
my_rdtsc.h	3.87 KB	-rw-r--r--	2022-05-18 13:19
my_rnd.h	1.04 KB	-rw-r--r--	2022-05-18 13:19
my_service_manager.h	1.47 KB	-rw-r--r--	2022-05-18 13:19
my_stacktrace.h	2.97 KB	-rw-r--r--	2022-05-18 13:19
my_time.h	8.75 KB	-rw-r--r--	2022-05-18 13:19
my_tree.h	3.89 KB	-rw-r--r--	2022-05-18 13:19
my_uctype.h	67.9 KB	-rw-r--r--	2022-05-18 13:19
my_user.h	1.12 KB	-rw-r--r--	2022-05-18 13:19
myisam.h	16.84 KB	-rw-r--r--	2022-05-18 13:19
myisamchk.h	4.7 KB	-rw-r--r--	2022-05-18 13:19
myisammrg.h	4.63 KB	-rw-r--r--	2022-05-18 13:19
myisampack.h	14.58 KB	-rw-r--r--	2022-05-18 13:19
mysql_async.h	1.77 KB	-rw-r--r--	2022-05-18 13:19
mysqld.h	31.32 KB	-rw-r--r--	2022-05-18 13:19
mysqld_default_groups.h	169 B	-rw-r--r--	2022-05-18 13:19
mysqld_suffix.h	1.17 KB	-rw-r--r--	2022-05-18 13:19
mysys_err.h	2.81 KB	-rw-r--r--	2022-05-18 13:19
nt_servc.h	3 KB	-rw-r--r--	2022-05-18 13:19
opt_range.h	53.25 KB	-rw-r--r--	2022-05-18 13:19
opt_subselect.h	13.76 KB	-rw-r--r--	2022-05-18 13:19
parse_file.h	4.12 KB	-rw-r--r--	2022-05-18 13:19
partition_element.h	4.52 KB	-rw-r--r--	2022-05-18 13:19
partition_info.h	14.25 KB	-rw-r--r--	2022-05-18 13:19
password.h	1.17 KB	-rw-r--r--	2022-05-18 13:19
pcre.h	30.97 KB	-rw-r--r--	2022-05-18 14:40
probes_mysql.h	973 B	-rw-r--r--	2022-05-18 13:19
probes_mysql_dtrace.h	32.23 KB	-rw-r--r--	2022-05-18 14:43
probes_mysql_nodtrace.h	4.89 KB	-rw-r--r--	2022-05-18 14:43
procedure.h	5.83 KB	-rw-r--r--	2022-05-18 13:19
protocol.h	9.72 KB	-rw-r--r--	2022-05-18 13:19
queues.h	3.51 KB	-rw-r--r--	2022-05-18 13:19
records.h	2.99 KB	-rw-r--r--	2022-05-18 13:19
repl_failsafe.h	1.69 KB	-rw-r--r--	2022-05-18 13:19
replication.h	15.96 KB	-rw-r--r--	2022-05-18 13:19
rijndael.h	1.67 KB	-rw-r--r--	2022-05-18 13:19
rpl_constants.h	3.28 KB	-rw-r--r--	2022-05-18 13:19
rpl_filter.h	4.41 KB	-rw-r--r--	2022-05-18 13:19
rpl_gtid.h	10.47 KB	-rw-r--r--	2022-05-18 13:19
rpl_handler.h	5.53 KB	-rw-r--r--	2022-05-18 13:19
rpl_injector.h	9.42 KB	-rw-r--r--	2022-05-18 13:19
rpl_mi.h	12.36 KB	-rw-r--r--	2022-05-18 13:19
rpl_parallel.h	13.3 KB	-rw-r--r--	2022-05-18 13:19
rpl_record.h	1.61 KB	-rw-r--r--	2022-05-18 13:19
rpl_record_old.h	1.37 KB	-rw-r--r--	2022-05-18 13:19
rpl_reporting.h	2.96 KB	-rw-r--r--	2022-05-18 13:19
rpl_rli.h	31.89 KB	-rw-r--r--	2022-05-18 13:19
rpl_tblmap.h	3.1 KB	-rw-r--r--	2022-05-18 13:19
rpl_utility.h	9.32 KB	-rw-r--r--	2022-05-18 13:19
scheduler.h	3.43 KB	-rw-r--r--	2022-05-18 13:19
service_versions.h	1.82 KB	-rw-r--r--	2022-05-18 13:19
session_tracker.h	8.8 KB	-rw-r--r--	2022-05-18 13:19
set_var.h	14.52 KB	-rw-r--r--	2022-05-18 13:19
slave.h	11.14 KB	-rw-r--r--	2022-05-18 13:19
sp.h	7.13 KB	-rw-r--r--	2022-05-18 13:19
sp_cache.h	2.02 KB	-rw-r--r--	2022-05-18 13:19
sp_head.h	36.17 KB	-rw-r--r--	2022-05-18 13:19
sp_pcontext.h	16.61 KB	-rw-r--r--	2022-05-18 13:19
sp_rcontext.h	15.43 KB	-rw-r--r--	2022-05-18 13:19
span.h	3.83 KB	-rw-r--r--	2022-05-18 13:19
spatial.h	20.68 KB	-rw-r--r--	2022-05-18 13:19
sql_acl.h	17.23 KB	-rw-r--r--	2022-05-18 13:19
sql_admin.h	2.69 KB	-rw-r--r--	2022-05-18 13:19
sql_alter.h	12 KB	-rw-r--r--	2022-05-18 13:19
sql_analyse.h	10.91 KB	-rw-r--r--	2022-05-18 13:19
sql_analyze_stmt.h	7.61 KB	-rw-r--r--	2022-05-18 13:19
sql_array.h	5.92 KB	-rw-r--r--	2022-05-18 13:19
sql_audit.h	14.57 KB	-rw-r--r--	2022-05-18 13:19
sql_base.h	24.9 KB	-rw-r--r--	2022-05-18 13:19
sql_basic_types.h	951 B	-rw-r--r--	2022-05-18 13:19
sql_binlog.h	895 B	-rw-r--r--	2022-05-18 13:19
sql_bitmap.h	7.2 KB	-rw-r--r--	2022-05-18 13:19
sql_bootstrap.h	1.63 KB	-rw-r--r--	2022-05-18 13:19
sql_cache.h	20.88 KB	-rw-r--r--	2022-05-18 13:19
sql_callback.h	1.51 KB	-rw-r--r--	2022-05-18 13:19
sql_class.h	195.45 KB	-rw-r--r--	2022-05-18 13:19
sql_cmd.h	7.26 KB	-rw-r--r--	2022-05-18 13:19
sql_connect.h	3.56 KB	-rw-r--r--	2022-05-18 13:19
sql_const.h	10.43 KB	-rw-r--r--	2022-05-18 13:19
sql_crypt.h	1.39 KB	-rw-r--r--	2022-05-18 13:19
sql_cte.h	14.64 KB	-rw-r--r--	2022-05-18 13:19
sql_cursor.h	2.02 KB	-rw-r--r--	2022-05-18 13:19
sql_db.h	2.01 KB	-rw-r--r--	2022-05-18 13:19
sql_delete.h	1.32 KB	-rw-r--r--	2022-05-18 13:19
sql_derived.h	1.51 KB	-rw-r--r--	2022-05-18 13:19
sql_digest.h	3.72 KB	-rw-r--r--	2022-05-18 13:19
sql_digest_stream.h	1.53 KB	-rw-r--r--	2022-05-18 13:19
sql_do.h	954 B	-rw-r--r--	2022-05-18 13:19
sql_error.h	29.86 KB	-rw-r--r--	2022-05-18 13:19
sql_explain.h	24.63 KB	-rw-r--r--	2022-05-18 13:19
sql_expression_cache.h	4.21 KB	-rw-r--r--	2022-05-18 13:19
sql_get_diagnostics.h	7.66 KB	-rw-r--r--	2022-05-18 13:19
sql_handler.h	2.68 KB	-rw-r--r--	2022-05-18 13:19
sql_help.h	920 B	-rw-r--r--	2022-05-18 13:19
sql_hset.h	3.2 KB	-rw-r--r--	2022-05-18 13:19
sql_insert.h	2.06 KB	-rw-r--r--	2022-05-18 13:19
sql_join_cache.h	46.6 KB	-rw-r--r--	2022-05-18 13:19
sql_lex.h	103.48 KB	-rw-r--r--	2022-05-18 13:19
sql_lifo_buffer.h	9.23 KB	-rw-r--r--	2022-05-18 13:19
sql_list.h	21.37 KB	-rw-r--r--	2022-05-18 13:19
sql_load.h	1.24 KB	-rw-r--r--	2022-05-18 13:19
sql_locale.h	2.67 KB	-rw-r--r--	2022-05-18 13:19
sql_manager.h	960 B	-rw-r--r--	2022-05-18 13:19
sql_mode.h	6.57 KB	-rw-r--r--	2022-05-18 13:19
sql_parse.h	8.02 KB	-rw-r--r--	2022-05-18 13:19
sql_partition.h	11.43 KB	-rw-r--r--	2022-05-18 13:19
sql_partition_admin.h	5.68 KB	-rw-r--r--	2022-05-18 13:19
sql_plist.h	7.58 KB	-rw-r--r--	2022-05-18 13:19
sql_plugin.h	7.48 KB	-rw-r--r--	2022-05-18 13:19
sql_plugin_compat.h	2.18 KB	-rw-r--r--	2022-05-18 13:19
sql_prepare.h	11.3 KB	-rw-r--r--	2022-05-18 13:19
sql_priv.h	15.99 KB	-rw-r--r--	2022-05-18 13:19
sql_profile.h	7.39 KB	-rw-r--r--	2022-05-18 13:19
sql_reload.h	1.01 KB	-rw-r--r--	2022-05-18 13:19
sql_rename.h	941 B	-rw-r--r--	2022-05-18 13:19
sql_repl.h	3.24 KB	-rw-r--r--	2022-05-18 13:19
sql_select.h	77.03 KB	-rw-r--r--	2022-05-18 13:19
sql_servers.h	1.78 KB	-rw-r--r--	2022-05-18 13:19
sql_show.h	8.84 KB	-rw-r--r--	2022-05-18 13:19
sql_signal.h	4.05 KB	-rw-r--r--	2022-05-18 13:19
sql_sort.h	4.1 KB	-rw-r--r--	2022-05-18 13:19
sql_statistics.h	11.56 KB	-rw-r--r--	2022-05-18 13:19
sql_string.h	21.94 KB	-rw-r--r--	2022-05-18 13:19
sql_table.h	11.06 KB	-rw-r--r--	2022-05-18 13:19
sql_tablespace.h	956 B	-rw-r--r--	2022-05-18 13:19
sql_test.h	1.45 KB	-rw-r--r--	2022-05-18 13:19
sql_time.h	10.28 KB	-rw-r--r--	2022-05-18 13:19
sql_trigger.h	10.58 KB	-rw-r--r--	2022-05-18 13:19
sql_truncate.h	2.01 KB	-rw-r--r--	2022-05-18 13:19
sql_type.h	19.73 KB	-rw-r--r--	2022-05-18 13:19
sql_type_int.h	2.85 KB	-rw-r--r--	2022-05-18 13:19
sql_udf.h	4.04 KB	-rw-r--r--	2022-05-18 13:19
sql_union.h	1.1 KB	-rw-r--r--	2022-05-18 13:19
sql_update.h	1.92 KB	-rw-r--r--	2022-05-18 13:19
sql_view.h	2.26 KB	-rw-r--r--	2022-05-18 13:19
sql_window.h	5.89 KB	-rw-r--r--	2022-05-18 13:19
sql_yacc.h	35.19 KB	-rw-r--r--	2022-05-18 13:19
ssl_compat.h	2.97 KB	-rw-r--r--	2022-05-18 13:19
strfunc.h	2.21 KB	-rw-r--r--	2022-05-18 13:19
structs.h	20.36 KB	-rw-r--r--	2022-05-18 13:19
sys_vars_shared.h	2.6 KB	-rw-r--r--	2022-05-18 13:19
t_ctype.h	5.51 KB	-rw-r--r--	2022-05-18 13:19
table.h	95.89 KB	-rw-r--r--	2022-05-18 13:19
table_cache.h	4.24 KB	-rw-r--r--	2022-05-18 13:19
thr_alarm.h	2.87 KB	-rw-r--r--	2022-05-18 13:19
thr_lock.h	6.66 KB	-rw-r--r--	2022-05-18 13:19
thr_malloc.h	1.22 KB	-rw-r--r--	2022-05-18 13:19
thr_timer.h	1.43 KB	-rw-r--r--	2022-05-18 13:19
thread_pool_priv.h	4.48 KB	-rw-r--r--	2022-05-18 13:19
threadpool.h	4.32 KB	-rw-r--r--	2022-05-18 13:19
transaction.h	1.57 KB	-rw-r--r--	2022-05-18 13:19
tzfile.h	4.9 KB	-rw-r--r--	2022-05-18 13:19
tztime.h	3.28 KB	-rw-r--r--	2022-05-18 13:19
uniques.h	4.05 KB	-rw-r--r--	2022-05-18 13:19
unireg.h	7.22 KB	-rw-r--r--	2022-05-18 13:19
violite.h	9.83 KB	-rw-r--r--	2022-05-18 13:19
waiting_threads.h	4.45 KB	-rw-r--r--	2022-05-18 13:19
welcome_copyright_notice.h	1.19 KB	-rw-r--r--	2022-05-18 13:19
win_tzname_data.h	6.31 KB	-rw-r--r--	2022-05-18 13:19
winservice.h	1.17 KB	-rw-r--r--	2022-05-18 13:19
wqueue.h	1.55 KB	-rw-r--r--	2022-05-18 13:19
wsrep.h	3.01 KB	-rw-r--r--	2022-05-18 13:19
wsrep_applier.h	1.67 KB	-rw-r--r--	2022-05-18 13:19
wsrep_binlog.h	2.06 KB	-rw-r--r--	2022-05-18 13:19
wsrep_mysqld.h	13.88 KB	-rw-r--r--	2022-05-18 13:19
wsrep_mysqld_c.h	1.2 KB	-rw-r--r--	2022-05-18 13:19
wsrep_priv.h	2.07 KB	-rw-r--r--	2022-05-18 13:19
wsrep_sst.h	3.08 KB	-rw-r--r--	2022-05-18 13:19
wsrep_thd.h	2.05 KB	-rw-r--r--	2022-05-18 13:19
wsrep_utils.h	9.02 KB	-rw-r--r--	2022-05-18 13:19
wsrep_var.h	3.72 KB	-rw-r--r--	2022-05-18 13:19
wsrep_xid.h	1.38 KB	-rw-r--r--	2022-05-18 13:19

Rename

#ifndef SQL_TYPE_H_INCLUDED
#define SQL_TYPE_H_INCLUDED
/*
   Copyright (c) 2015  MariaDB Foundation.

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; version 2 of the License.

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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1335  USA */

#ifdef USE_PRAGMA_INTERFACE
#pragma interface			/* gcc class implementation */
#endif

#include "mysqld.h"

class Field;
class Item;
class Type_std_attributes;
class Sort_param;
struct TABLE;
struct SORT_FIELD_ATTR;

class Type_handler
{
protected:
  const Type_handler *string_type_handler(uint max_octet_length) const;
  void make_sort_key_longlong(uchar *to,
                              bool maybe_null, bool null_value,
                              bool unsigned_flag,
                              longlong value) const;
public:
  static const Type_handler *get_handler_by_field_type(enum_field_types type);
  static const Type_handler *get_handler_by_real_type(enum_field_types type);
  virtual enum_field_types field_type() const= 0;
  virtual enum_field_types real_field_type() const { return field_type(); }
  virtual Item_result result_type() const= 0;
  virtual Item_result cmp_type() const= 0;
  virtual const Type_handler*
  type_handler_adjusted_to_max_octet_length(uint max_octet_length,
                                            CHARSET_INFO *cs) const
  { return this; }
  virtual ~Type_handler() {}
  /**
    Makes a temporary table Field to handle numeric aggregate functions,
    e.g. SUM(DISTINCT expr), AVG(DISTINCT expr), etc.
  */
  virtual Field *make_num_distinct_aggregator_field(MEM_ROOT *,
                                                    const Item *) const;
  /**
    Makes a temporary table Field to handle RBR replication type conversion.
    @param TABLE    - The conversion table the field is going to be added to.
                      It's used to access to table->in_use->mem_root,
                      to create the new field on the table memory root,
                      as well as to increment statistics in table->share
                      (e.g. table->s->blob_count).
    @param metadata - Metadata from the binary log.
    @param target   - The field in the target table on the slave.

Note, the data types of "target" and of "this" are not necessarily
    always the same, in general case it's possible that:
            this->field_type() != target->field_type()
    and/or
            this->real_type( ) != target->real_type()

This method decodes metadata according to this->real_type()
    and creates a new field also according to this->real_type().

In some cases it lurks into "target", to get some extra information, e.g.:
    - unsigned_flag for numeric fields
    - charset() for string fields
    - typelib and field_length for SET and ENUM
    - geom_type and srid for GEOMETRY
    This information is not available in the binary log, so
    we assume that these fields are the same on the master and on the slave.
  */
  virtual Field *make_conversion_table_field(TABLE *TABLE,
                                             uint metadata,
                                             const Field *target) const= 0;
  virtual void make_sort_key(uchar *to, Item *item,
                             const SORT_FIELD_ATTR *sort_field,
                             Sort_param *param) const= 0;
  virtual void sortlength(THD *thd,
                          const Type_std_attributes *item,
                          SORT_FIELD_ATTR *attr) const= 0;
};

/*** Abstract classes for every XXX_RESULT */

class Type_handler_real_result: public Type_handler
{
public:
  Item_result result_type() const { return REAL_RESULT; }
  Item_result cmp_type() const { return REAL_RESULT; }
  virtual ~Type_handler_real_result() {}
  void make_sort_key(uchar *to, Item *item, const SORT_FIELD_ATTR *sort_field,
                     Sort_param *param) const;
  void sortlength(THD *thd,
                  const Type_std_attributes *item,
                  SORT_FIELD_ATTR *attr) const;
};

class Type_handler_decimal_result: public Type_handler
{
public:
  Item_result result_type() const { return DECIMAL_RESULT; }
  Item_result cmp_type() const { return DECIMAL_RESULT; }
  virtual ~Type_handler_decimal_result() {};
  Field *make_num_distinct_aggregator_field(MEM_ROOT *, const Item *) const;
  void make_sort_key(uchar *to, Item *item, const SORT_FIELD_ATTR *sort_field,
                     Sort_param *param) const;
  void sortlength(THD *thd,
                  const Type_std_attributes *item,
                  SORT_FIELD_ATTR *attr) const;
};

class Type_handler_int_result: public Type_handler
{
public:
  Item_result result_type() const { return INT_RESULT; }
  Item_result cmp_type() const { return INT_RESULT; }
  virtual ~Type_handler_int_result() {}
  Field *make_num_distinct_aggregator_field(MEM_ROOT *, const Item *) const;
  void make_sort_key(uchar *to, Item *item, const SORT_FIELD_ATTR *sort_field,
                     Sort_param *param) const;
  void sortlength(THD *thd,
                  const Type_std_attributes *item,
                  SORT_FIELD_ATTR *attr) const;
};

class Type_handler_temporal_result: public Type_handler
{
public:
  Item_result result_type() const { return STRING_RESULT; }
  Item_result cmp_type() const { return TIME_RESULT; }
  virtual ~Type_handler_temporal_result() {}
  void make_sort_key(uchar *to, Item *item,  const SORT_FIELD_ATTR *sort_field,
                     Sort_param *param) const;
  void sortlength(THD *thd,
                  const Type_std_attributes *item,
                  SORT_FIELD_ATTR *attr) const;
};

class Type_handler_string_result: public Type_handler
{
public:
  Item_result result_type() const { return STRING_RESULT; }
  Item_result cmp_type() const { return STRING_RESULT; }
  virtual ~Type_handler_string_result() {}
  const Type_handler *
  type_handler_adjusted_to_max_octet_length(uint max_octet_length,
                                            CHARSET_INFO *cs) const;
  void make_sort_key(uchar *to, Item *item, const SORT_FIELD_ATTR *sort_field,
                     Sort_param *param) const;
  void sortlength(THD *thd,
                  const Type_std_attributes *item,
                  SORT_FIELD_ATTR *attr) const;
};

/***
  Instantiable classes for every MYSQL_TYPE_XXX

There are no Type_handler_xxx for the following types:
  - MYSQL_TYPE_VAR_STRING (old VARCHAR) - mapped to MYSQL_TYPE_VARSTRING
  - MYSQL_TYPE_ENUM                     - mapped to MYSQL_TYPE_VARSTRING
  - MYSQL_TYPE_SET:                     - mapped to MYSQL_TYPE_VARSTRING

because the functionality that currently uses Type_handler
  (e.g. hybrid type functions) does not need to distinguish between
  these types and VARCHAR.
  For example:
    CREATE TABLE t2 AS SELECT COALESCE(enum_column) FROM t1;
  creates a VARCHAR column.

There most likely be Type_handler_enum and Type_handler_set later,
  when the Type_handler infrastructure gets used in more pieces of the code.
*/

class Type_handler_tiny: public Type_handler_int_result
{
public:
  virtual ~Type_handler_tiny() {}
  enum_field_types field_type() const { return MYSQL_TYPE_TINY; }
  Field *make_conversion_table_field(TABLE *TABLE, uint metadata,
                                     const Field *target) const;
};

class Type_handler_short: public Type_handler_int_result
{
public:
  virtual ~Type_handler_short() {}
  enum_field_types field_type() const { return MYSQL_TYPE_SHORT; }
  Field *make_conversion_table_field(TABLE *TABLE, uint metadata,
                                     const Field *target) const;
};

class Type_handler_long: public Type_handler_int_result
{
public:
  virtual ~Type_handler_long() {}
  enum_field_types field_type() const { return MYSQL_TYPE_LONG; }
  Field *make_conversion_table_field(TABLE *TABLE, uint metadata,
                                     const Field *target) const;
};

class Type_handler_longlong: public Type_handler_int_result
{
public:
  virtual ~Type_handler_longlong() {}
  enum_field_types field_type() const { return MYSQL_TYPE_LONGLONG; }
  Field *make_conversion_table_field(TABLE *TABLE, uint metadata,
                                     const Field *target) const;
};

class Type_handler_int24: public Type_handler_int_result
{
public:
  virtual ~Type_handler_int24() {}
  enum_field_types field_type() const { return MYSQL_TYPE_INT24; }
  Field *make_conversion_table_field(TABLE *, uint metadata,
                                     const Field *target) const;
};

class Type_handler_year: public Type_handler_int_result
{
public:
  virtual ~Type_handler_year() {}
  enum_field_types field_type() const { return MYSQL_TYPE_YEAR; }
  Field *make_conversion_table_field(TABLE *, uint metadata,
                                     const Field *target) const;
};

class Type_handler_bit: public Type_handler_int_result
{
public:
  virtual ~Type_handler_bit() {}
  enum_field_types field_type() const { return MYSQL_TYPE_BIT; }
  Field *make_conversion_table_field(TABLE *, uint metadata,
                                     const Field *target) const;
};

class Type_handler_float: public Type_handler_real_result
{
public:
  virtual ~Type_handler_float() {}
  enum_field_types field_type() const { return MYSQL_TYPE_FLOAT; }
  Field *make_num_distinct_aggregator_field(MEM_ROOT *, const Item *) const;
  Field *make_conversion_table_field(TABLE *, uint metadata,
                                     const Field *target) const;
};

class Type_handler_double: public Type_handler_real_result
{
public:
  virtual ~Type_handler_double() {}
  enum_field_types field_type() const { return MYSQL_TYPE_DOUBLE; }
  Field *make_conversion_table_field(TABLE *, uint metadata,
                                     const Field *target) const;
};

class Type_handler_time: public Type_handler_temporal_result
{
public:
  virtual ~Type_handler_time() {}
  enum_field_types field_type() const { return MYSQL_TYPE_TIME; }
  Field *make_conversion_table_field(TABLE *, uint metadata,
                                     const Field *target) const;
};

class Type_handler_time2: public Type_handler_temporal_result
{
public:
  virtual ~Type_handler_time2() {}
  enum_field_types field_type() const { return MYSQL_TYPE_TIME; }
  enum_field_types real_field_type() const { return MYSQL_TYPE_TIME2; }
  Field *make_conversion_table_field(TABLE *, uint metadata,
                                     const Field *target) const;
};

class Type_handler_date: public Type_handler_temporal_result
{
public:
  virtual ~Type_handler_date() {}
  enum_field_types field_type() const { return MYSQL_TYPE_DATE; }
  Field *make_conversion_table_field(TABLE *, uint metadata,
                                     const Field *target) const;
};

class Type_handler_newdate: public Type_handler_temporal_result
{
public:
  virtual ~Type_handler_newdate() {}
  enum_field_types field_type() const { return MYSQL_TYPE_DATE; }
  Field *make_conversion_table_field(TABLE *, uint metadata,
                                     const Field *target) const;
};

class Type_handler_datetime: public Type_handler_temporal_result
{
public:
  virtual ~Type_handler_datetime() {}
  enum_field_types field_type() const { return MYSQL_TYPE_DATETIME; }
  Field *make_conversion_table_field(TABLE *, uint metadata,
                                     const Field *target) const;
};

class Type_handler_datetime2: public Type_handler_temporal_result
{
public:
  virtual ~Type_handler_datetime2() {}
  enum_field_types field_type() const { return MYSQL_TYPE_DATETIME; }
  enum_field_types real_field_type() const { return MYSQL_TYPE_DATETIME2; }
  Field *make_conversion_table_field(TABLE *, uint metadata,
                                     const Field *target) const;
};

class Type_handler_timestamp: public Type_handler_temporal_result
{
public:
  virtual ~Type_handler_timestamp() {}
  enum_field_types field_type() const { return MYSQL_TYPE_TIMESTAMP; }
  Field *make_conversion_table_field(TABLE *, uint metadata,
                                     const Field *target) const;
};

class Type_handler_timestamp2: public Type_handler_temporal_result
{
public:
  virtual ~Type_handler_timestamp2() {}
  enum_field_types field_type() const { return MYSQL_TYPE_TIMESTAMP; }
  enum_field_types real_field_type() const { return MYSQL_TYPE_TIMESTAMP2; }
  Field *make_conversion_table_field(TABLE *, uint metadata,
                                     const Field *target) const;
};

class Type_handler_olddecimal: public Type_handler_decimal_result
{
public:
  virtual ~Type_handler_olddecimal() {}
  enum_field_types field_type() const { return MYSQL_TYPE_DECIMAL; }
  Field *make_conversion_table_field(TABLE *, uint metadata,
                                     const Field *target) const;
};

class Type_handler_newdecimal: public Type_handler_decimal_result
{
public:
  virtual ~Type_handler_newdecimal() {}
  enum_field_types field_type() const { return MYSQL_TYPE_NEWDECIMAL; }
  Field *make_conversion_table_field(TABLE *, uint metadata,
                                     const Field *target) const;
};

class Type_handler_null: public Type_handler_string_result
{
public:
  virtual ~Type_handler_null() {}
  enum_field_types field_type() const { return MYSQL_TYPE_NULL; }
  Field *make_conversion_table_field(TABLE *, uint metadata,
                                     const Field *target) const;
};

class Type_handler_string: public Type_handler_string_result
{
public:
  virtual ~Type_handler_string() {}
  enum_field_types field_type() const { return MYSQL_TYPE_STRING; }
  Field *make_conversion_table_field(TABLE *, uint metadata,
                                     const Field *target) const;
};

class Type_handler_varchar: public Type_handler_string_result
{
public:
  virtual ~Type_handler_varchar() {}
  enum_field_types field_type() const { return MYSQL_TYPE_VARCHAR; }
  Field *make_conversion_table_field(TABLE *, uint metadata,
                                     const Field *target) const;
};

class Type_handler_blob_common: public Type_handler_string_result
{
public:
  virtual ~Type_handler_blob_common() { }
  Field *make_conversion_table_field(TABLE *, uint metadata,
                                     const Field *target) const;
};

class Type_handler_tiny_blob: public Type_handler_blob_common
{
public:
  virtual ~Type_handler_tiny_blob() {}
  enum_field_types field_type() const { return MYSQL_TYPE_TINY_BLOB; }
};

class Type_handler_medium_blob: public Type_handler_blob_common
{
public:
  virtual ~Type_handler_medium_blob() {}
  enum_field_types field_type() const { return MYSQL_TYPE_MEDIUM_BLOB; }
};

class Type_handler_long_blob: public Type_handler_blob_common
{
public:
  virtual ~Type_handler_long_blob() {}
  enum_field_types field_type() const { return MYSQL_TYPE_LONG_BLOB; }
};

class Type_handler_blob: public Type_handler_blob_common
{
public:
  virtual ~Type_handler_blob() {}
  enum_field_types field_type() const { return MYSQL_TYPE_BLOB; }
};

#ifdef HAVE_SPATIAL
class Type_handler_geometry: public Type_handler_string_result
{
public:
  virtual ~Type_handler_geometry() {}
  enum_field_types field_type() const { return MYSQL_TYPE_GEOMETRY; }
  Field *make_conversion_table_field(TABLE *, uint metadata,
                                     const Field *target) const;
};
#endif

class Type_handler_enum: public Type_handler_string_result
{
public:
  virtual ~Type_handler_enum() {}
  enum_field_types field_type() const { return MYSQL_TYPE_VARCHAR; }
  virtual enum_field_types real_field_type() const { return MYSQL_TYPE_ENUM; }
  Field *make_conversion_table_field(TABLE *, uint metadata,
                                     const Field *target) const;
};

class Type_handler_set: public Type_handler_string_result
{
public:
  virtual ~Type_handler_set() {}
  enum_field_types field_type() const { return MYSQL_TYPE_VARCHAR; }
  virtual enum_field_types real_field_type() const { return MYSQL_TYPE_SET; }
  Field *make_conversion_table_field(TABLE *, uint metadata,
                                     const Field *target) const;
};

/**
  A handler for hybrid type functions, e.g.
  COALESCE(), IF(), IFNULL(), NULLIF(), CASE,
  numeric operators,
  UNIX_TIMESTAMP(), TIME_TO_SEC().

Makes sure that field_type(), cmp_type() and result_type()
  are always in sync to each other for hybrid functions.
*/
class Type_handler_hybrid_field_type: public Type_handler
{
  const Type_handler *m_type_handler;
  const Type_handler *get_handler_by_result_type(Item_result type) const;
public:
  Type_handler_hybrid_field_type();
  Type_handler_hybrid_field_type(const Type_handler *handler)
   :m_type_handler(handler)
  { }
  Type_handler_hybrid_field_type(enum_field_types type)
    :m_type_handler(get_handler_by_field_type(type))
  { }
  Type_handler_hybrid_field_type(const Type_handler_hybrid_field_type *other)
    :m_type_handler(other->m_type_handler)
  { }
  enum_field_types field_type() const { return m_type_handler->field_type(); }
  enum_field_types real_field_type() const
  {
    return m_type_handler->real_field_type();
  }
  Item_result result_type() const { return m_type_handler->result_type(); }
  Item_result cmp_type() const { return m_type_handler->cmp_type(); }
  void set_handler(const Type_handler *other)
  {
    m_type_handler= other;
  }
  const Type_handler *set_handler_by_result_type(Item_result type)
  {
    return (m_type_handler= get_handler_by_result_type(type));
  }
  const Type_handler *set_handler_by_result_type(Item_result type,
                                                 uint max_octet_length,
                                                 CHARSET_INFO *cs)
  {
    m_type_handler= get_handler_by_result_type(type);
    return m_type_handler=
      m_type_handler->type_handler_adjusted_to_max_octet_length(max_octet_length,
                                                                cs);
  }
  const Type_handler *set_handler_by_field_type(enum_field_types type)
  {
    return (m_type_handler= get_handler_by_field_type(type));
  }
  const Type_handler *set_handler_by_real_type(enum_field_types type)
  {
    return (m_type_handler= get_handler_by_real_type(type));
  }
  const Type_handler *
  type_handler_adjusted_to_max_octet_length(uint max_octet_length,
                                            CHARSET_INFO *cs) const
  {
    return
      m_type_handler->type_handler_adjusted_to_max_octet_length(max_octet_length,
                                                                cs);
  }
  Field *make_num_distinct_aggregator_field(MEM_ROOT *mem_root,
                                            const Item *item) const
  {
    return m_type_handler->make_num_distinct_aggregator_field(mem_root, item);
  }
  Field *make_conversion_table_field(TABLE *table, uint metadata,
                                     const Field *target) const
  {
    return m_type_handler->make_conversion_table_field(table, metadata, target);
  }
  void make_sort_key(uchar *to, Item *item, const SORT_FIELD_ATTR *sort_field,
                     Sort_param *param) const
  {
    m_type_handler->make_sort_key(to, item, sort_field, param);
  }
  void sortlength(THD *thd,
                  const Type_std_attributes *item,
                  SORT_FIELD_ATTR *attr) const
  {
    m_type_handler->sortlength(thd, item, attr);
  }

};

/**
  This class is used for Item_type_holder, which preserves real_type.
*/
class Type_handler_hybrid_real_field_type:
  public Type_handler_hybrid_field_type
{
public:
  Type_handler_hybrid_real_field_type(enum_field_types type)
    :Type_handler_hybrid_field_type(get_handler_by_real_type(type))
  { }
};

#endif /* SQL_TYPE_H_INCLUDED */