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ðŸ“ ..
ðŸ“„ aligned.h(1.11 KB)
ðŸ“„ aria_backup.h(1.51 KB)
ðŸ“„ assume_aligned.h(2.29 KB)
ðŸ“ atomic
ðŸ“„ authors.h(9.9 KB)
ðŸ“„ backup.h(1.66 KB)
ðŸ“„ bounded_queue.h(5.95 KB)
ðŸ“„ client_settings.h(1.89 KB)
ðŸ“„ compat56.h(2.23 KB)
ðŸ“„ config.h(14.23 KB)
ðŸ“„ contributors.h(4.76 KB)
ðŸ“„ create_options.h(4.42 KB)
ðŸ“„ create_tmp_table.h(2.74 KB)
ðŸ“„ cset_narrowing.h(3.88 KB)
ðŸ“„ custom_conf.h(1.06 KB)
ðŸ“„ datadict.h(1.66 KB)
ðŸ“„ ddl_log.h(12.39 KB)
ðŸ“„ debug.h(1.21 KB)
ðŸ“„ debug_sync.h(2 KB)
ðŸ“„ derived_handler.h(2.32 KB)
ðŸ“„ derror.h(980 B)
ðŸ“„ des_key_file.h(1.21 KB)
ðŸ“„ discover.h(1.53 KB)
ðŸ“„ dur_prop.h(1.06 KB)
ðŸ“„ embedded_priv.h(1.69 KB)
ðŸ“„ event_data_objects.h(4.09 KB)
ðŸ“„ event_db_repository.h(3.56 KB)
ðŸ“„ event_parse_data.h(2.83 KB)
ðŸ“„ event_queue.h(3.36 KB)
ðŸ“„ event_scheduler.h(3.21 KB)
ðŸ“„ events.h(4.59 KB)
ðŸ“„ field.h(215.25 KB)
ðŸ“„ field_comp.h(1.15 KB)
ðŸ“„ filesort.h(7.11 KB)
ðŸ“„ filesort_utils.h(8 KB)
ðŸ“„ ft_global.h(3.04 KB)
ðŸ“„ gcalc_slicescan.h(16.87 KB)
ðŸ“„ gcalc_tools.h(11.62 KB)
ðŸ“„ grant.h(2.69 KB)
ðŸ“„ group_by_handler.h(3.45 KB)
ðŸ“„ gstream.h(2.38 KB)
ðŸ“„ ha_handler_stats.h(2.28 KB)
ðŸ“„ ha_partition.h(62.9 KB)
ðŸ“„ ha_sequence.h(6.1 KB)
ðŸ“„ handle_connections_win.h(884 B)
ðŸ“„ handler.h(196.46 KB)
ðŸ“„ hash.h(4.34 KB)
ðŸ“„ hash_filo.h(5.55 KB)
ðŸ“„ heap.h(9.26 KB)
ðŸ“„ hostname.h(5.29 KB)
ðŸ“„ ilist.h(6.88 KB)
ðŸ“„ init.h(852 B)
ðŸ“„ innodb_priv.h(1.29 KB)
ðŸ“„ item.h(272.64 KB)
ðŸ“„ item_cmpfunc.h(131.86 KB)
ðŸ“„ item_create.h(11.23 KB)
ðŸ“„ item_func.h(133.45 KB)
ðŸ“„ item_geofunc.h(37.99 KB)
ðŸ“„ item_jsonfunc.h(21.99 KB)
ðŸ“„ item_row.h(5.1 KB)
ðŸ“„ item_strfunc.h(70.55 KB)
ðŸ“„ item_subselect.h(57.77 KB)
ðŸ“„ item_sum.h(70.59 KB)
ðŸ“„ item_timefunc.h(63.1 KB)
ðŸ“„ item_vers.h(4.23 KB)
ðŸ“„ item_windowfunc.h(33.51 KB)
ðŸ“„ item_xmlfunc.h(4.5 KB)
ðŸ“„ json_table.h(9.28 KB)
ðŸ“„ key.h(2.08 KB)
ðŸ“„ keycaches.h(1.95 KB)
ðŸ“„ lex.h(29.13 KB)
ðŸ“„ lex_string.h(3.97 KB)
ðŸ“„ lex_symbol.h(1.29 KB)
ðŸ“„ lf.h(6.31 KB)
ðŸ“„ lock.h(2.15 KB)
ðŸ“„ log.h(45 KB)
ðŸ“„ log_event.h(182.04 KB)
ðŸ“„ log_event_data_type.h(1.85 KB)
ðŸ“„ log_event_old.h(19.37 KB)
ðŸ“„ log_slow.h(2.38 KB)
ðŸ“„ maria.h(5.73 KB)
ðŸ“„ mariadb.h(1.25 KB)
ðŸ“„ mdl.h(37.57 KB)
ðŸ“„ mem_root_array.h(6.94 KB)
ðŸ“„ message.h(1.17 KB)
ðŸ“„ multi_range_read.h(22.64 KB)
ðŸ“„ my_alarm.h(2.37 KB)
ðŸ“„ my_apc.h(4.64 KB)
ðŸ“„ my_atomic.h(7.11 KB)
ðŸ“„ my_atomic_wrapper.h(2.98 KB)
ðŸ“„ my_base.h(26.57 KB)
ðŸ“„ my_bit.h(6.05 KB)
ðŸ“„ my_bitmap.h(5.74 KB)
ðŸ“„ my_check_opt.h(2.56 KB)
ðŸ“„ my_compare.h(10.93 KB)
ðŸ“„ my_counter.h(1.68 KB)
ðŸ“„ my_cpu.h(4.74 KB)
ðŸ“„ my_crypt.h(904 B)
ðŸ“„ my_decimal.h(14.15 KB)
ðŸ“„ my_default.h(1.84 KB)
ðŸ“„ my_handler_errors.h(4.77 KB)
ðŸ“„ my_json_writer.h(17.95 KB)
ðŸ“„ my_libwrap.h(1.16 KB)
ðŸ“„ my_md5.h(1.45 KB)
ðŸ“„ my_minidump.h(848 B)
ðŸ“„ my_nosys.h(1.4 KB)
ðŸ“„ my_rdtsc.h(8.23 KB)
ðŸ“„ my_rnd.h(1.04 KB)
ðŸ“„ my_service_manager.h(2 KB)
ðŸ“„ my_stack_alloc.h(6.34 KB)
ðŸ“„ my_stacktrace.h(3.14 KB)
ðŸ“„ my_time.h(10.22 KB)
ðŸ“„ my_tree.h(3.9 KB)
ðŸ“„ my_uctype.h(67.9 KB)
ðŸ“„ my_user.h(1.1 KB)
ðŸ“„ myisam.h(17.1 KB)
ðŸ“„ myisamchk.h(4.61 KB)
ðŸ“„ myisammrg.h(4.78 KB)
ðŸ“„ myisampack.h(14.58 KB)
ðŸ“„ mysqld.h(39.55 KB)
ðŸ“„ mysqld_default_groups.h(204 B)
ðŸ“„ mysqld_suffix.h(1.17 KB)
ðŸ“„ mysys_err.h(2.95 KB)
ðŸ“„ opt_range.h(58.19 KB)
ðŸ“„ opt_subselect.h(14.21 KB)
ðŸ“„ opt_trace.h(8.29 KB)
ðŸ“„ opt_trace_context.h(3.21 KB)
ðŸ“„ parse_file.h(4.28 KB)
ðŸ“„ partition_element.h(5.09 KB)
ðŸ“„ partition_info.h(18.85 KB)
ðŸ“„ password.h(1.14 KB)
ðŸ“„ pfs_file_provider.h(3.08 KB)
ðŸ“„ pfs_idle_provider.h(1.35 KB)
ðŸ“„ pfs_memory_provider.h(1.59 KB)
ðŸ“„ pfs_metadata_provider.h(1.85 KB)
ðŸ“„ pfs_socket_provider.h(2.21 KB)
ðŸ“„ pfs_stage_provider.h(1.52 KB)
ðŸ“„ pfs_statement_provider.h(4.25 KB)
ðŸ“„ pfs_table_provider.h(2.56 KB)
ðŸ“„ pfs_thread_provider.h(5.43 KB)
ðŸ“„ pfs_transaction_provider.h(2.78 KB)
ðŸ“„ privilege.h(27.97 KB)
ðŸ“„ probes_mysql.h(973 B)
ðŸ“„ probes_mysql_dtrace.h(32.23 KB)
ðŸ“„ probes_mysql_nodtrace.h(4.89 KB)
ðŸ“„ procedure.h(6.63 KB)
ðŸ“„ protocol.h(12.2 KB)
ðŸ“„ proxy_protocol.h(548 B)
ðŸ“„ queues.h(3.4 KB)
ðŸ“„ records.h(3.07 KB)
ðŸ“„ repl_failsafe.h(1.55 KB)
ðŸ“„ replication.h(15.73 KB)
ðŸ“„ rijndael.h(1.67 KB)
ðŸ“„ rowid_filter.h(15.11 KB)
ðŸ“„ rpl_constants.h(3.28 KB)
ðŸ“„ rpl_filter.h(4.43 KB)
ðŸ“„ rpl_gtid.h(13.36 KB)
ðŸ“„ rpl_injector.h(9.4 KB)
ðŸ“„ rpl_mi.h(14.64 KB)
ðŸ“„ rpl_parallel.h(17.05 KB)
ðŸ“„ rpl_record.h(1.55 KB)
ðŸ“„ rpl_record_old.h(1.37 KB)
ðŸ“„ rpl_reporting.h(3.63 KB)
ðŸ“„ rpl_rli.h(31.98 KB)
ðŸ“„ rpl_tblmap.h(3.1 KB)
ðŸ“„ rpl_utility.h(9.4 KB)
ðŸ“„ scheduler.h(3.12 KB)
ðŸ“„ scope.h(4.29 KB)
ðŸ“„ select_handler.h(2.18 KB)
ðŸ“„ semisync.h(2.23 KB)
ðŸ“„ semisync_master.h(24.96 KB)
ðŸ“„ semisync_master_ack_receiver.h(8.5 KB)
ðŸ“„ semisync_slave.h(3.65 KB)
ðŸ“„ service_versions.h(2 KB)
ðŸ“„ session_tracker.h(13.94 KB)
ðŸ“„ set_var.h(16.16 KB)
ðŸ“„ slave.h(11.99 KB)
ðŸ“„ socketpair.h(842 B)
ðŸ“„ source_revision.h(67 B)
ðŸ“„ sp.h(22.06 KB)
ðŸ“„ sp_cache.h(2 KB)
ðŸ“„ sp_head.h(63 KB)
ðŸ“„ sp_pcontext.h(24.31 KB)
ðŸ“„ sp_rcontext.h(14 KB)
ðŸ“„ span.h(3.84 KB)
ðŸ“„ spatial.h(21.78 KB)
ðŸ“„ sql_acl.h(13.8 KB)
ðŸ“„ sql_admin.h(2.85 KB)
ðŸ“„ sql_alloc.h(1.69 KB)
ðŸ“„ sql_alter.h(14.92 KB)
ðŸ“„ sql_analyse.h(10.86 KB)
ðŸ“„ sql_analyze_stmt.h(12.38 KB)
ðŸ“„ sql_array.h(6.71 KB)
ðŸ“„ sql_audit.h(13.62 KB)
ðŸ“„ sql_base.h(25.27 KB)
ðŸ“„ sql_basic_types.h(9.3 KB)
ðŸ“„ sql_binlog.h(895 B)
ðŸ“„ sql_bitmap.h(7.66 KB)
ðŸ“„ sql_bootstrap.h(1.77 KB)
ðŸ“„ sql_cache.h(21.17 KB)
ðŸ“„ sql_callback.h(1.51 KB)
ðŸ“„ sql_class.h(261.11 KB)
ðŸ“„ sql_cmd.h(9.2 KB)
ðŸ“„ sql_connect.h(3.99 KB)
ðŸ“„ sql_const.h(10.96 KB)
ðŸ“„ sql_crypt.h(1.4 KB)
ðŸ“„ sql_cte.h(16.15 KB)
ðŸ“„ sql_cursor.h(2.26 KB)
ðŸ“„ sql_db.h(2.38 KB)
ðŸ“„ sql_debug.h(5.51 KB)
ðŸ“„ sql_delete.h(1.31 KB)
ðŸ“„ sql_derived.h(1.26 KB)
ðŸ“„ sql_digest.h(3.73 KB)
ðŸ“„ sql_digest_stream.h(1.53 KB)
ðŸ“„ sql_do.h(954 B)
ðŸ“„ sql_error.h(38.66 KB)
ðŸ“„ sql_explain.h(28.34 KB)
ðŸ“„ sql_expression_cache.h(4.26 KB)
ðŸ“„ sql_get_diagnostics.h(7.68 KB)
ðŸ“„ sql_handler.h(2.84 KB)
ðŸ“„ sql_help.h(995 B)
ðŸ“„ sql_hset.h(3.32 KB)
ðŸ“„ sql_i_s.h(8.04 KB)
ðŸ“„ sql_insert.h(2.59 KB)
ðŸ“„ sql_join_cache.h(47.53 KB)
ðŸ“„ sql_lex.h(168.5 KB)
ðŸ“„ sql_lifo_buffer.h(9.45 KB)
ðŸ“„ sql_limit.h(3.11 KB)
ðŸ“„ sql_list.h(21.93 KB)
ðŸ“„ sql_load.h(1.25 KB)
ðŸ“„ sql_locale.h(2.64 KB)
ðŸ“„ sql_manager.h(960 B)
ðŸ“„ sql_mode.h(6.58 KB)
ðŸ“„ sql_parse.h(8.43 KB)
ðŸ“„ sql_partition.h(11.79 KB)
ðŸ“„ sql_partition_admin.h(5.8 KB)
ðŸ“„ sql_plist.h(7.55 KB)
ðŸ“„ sql_plugin.h(7.37 KB)
ðŸ“„ sql_plugin_compat.h(2.18 KB)
ðŸ“„ sql_prepare.h(11.14 KB)
ðŸ“„ sql_priv.h(18.16 KB)
ðŸ“„ sql_profile.h(7.63 KB)
ðŸ“„ sql_reload.h(1.01 KB)
ðŸ“„ sql_rename.h(982 B)
ðŸ“„ sql_repl.h(2.97 KB)
ðŸ“„ sql_schema.h(3.23 KB)
ðŸ“„ sql_select.h(86.81 KB)
ðŸ“„ sql_sequence.h(5.06 KB)
ðŸ“„ sql_servers.h(1.74 KB)
ðŸ“„ sql_show.h(9.39 KB)
ðŸ“„ sql_signal.h(3.28 KB)
ðŸ“„ sql_sort.h(21.45 KB)
ðŸ“„ sql_statistics.h(12.16 KB)
ðŸ“„ sql_string.h(38.84 KB)
ðŸ“„ sql_table.h(9.39 KB)
ðŸ“„ sql_tablespace.h(956 B)
ðŸ“„ sql_test.h(1.55 KB)
ðŸ“„ sql_time.h(8.18 KB)
ðŸ“„ sql_trigger.h(12.04 KB)
ðŸ“„ sql_truncate.h(2.03 KB)
ðŸ“„ sql_tvc.h(2.36 KB)
ðŸ“„ sql_type.h(288.51 KB)
ðŸ“„ sql_type_fixedbin.h(62.81 KB)
ðŸ“„ sql_type_fixedbin_storage.h(5.34 KB)
ðŸ“„ sql_type_geom.h(18.64 KB)
ðŸ“„ sql_type_int.h(9.77 KB)
ðŸ“„ sql_type_json.h(6.01 KB)
ðŸ“„ sql_type_real.h(1.23 KB)
ðŸ“„ sql_type_string.h(1.59 KB)
ðŸ“„ sql_udf.h(4.74 KB)
ðŸ“„ sql_union.h(1.04 KB)
ðŸ“„ sql_update.h(1.88 KB)
ðŸ“„ sql_view.h(2.41 KB)
ðŸ“„ sql_window.h(6.65 KB)
ðŸ“„ ssl_compat.h(3.07 KB)
ðŸ“„ strfunc.h(2.22 KB)
ðŸ“„ structs.h(25.76 KB)
ðŸ“„ sys_vars_shared.h(2.67 KB)
ðŸ“„ t_ctype.h(5.51 KB)
ðŸ“„ table.h(113.03 KB)
ðŸ“„ table_cache.h(4.13 KB)
ðŸ“„ thr_alarm.h(2.86 KB)
ðŸ“„ thr_lock.h(7.18 KB)
ðŸ“„ thr_malloc.h(1.17 KB)
ðŸ“„ thr_timer.h(1.53 KB)
ðŸ“„ thread_cache.h(5.77 KB)
ðŸ“„ threadpool.h(4.7 KB)
ðŸ“„ threadpool_generic.h(3.88 KB)
ðŸ“„ threadpool_winsockets.h(2.24 KB)
ðŸ“„ transaction.h(1.43 KB)
ðŸ“„ tzfile.h(4.9 KB)
ðŸ“„ tztime.h(3.32 KB)
ðŸ“„ uniques.h(4.12 KB)
ðŸ“„ unireg.h(7.54 KB)
ðŸ“„ vers_string.h(2.47 KB)
ðŸ“„ violite.h(9.85 KB)
ðŸ“„ waiting_threads.h(4.43 KB)
ðŸ“„ welcome_copyright_notice.h(1.19 KB)
ðŸ“„ win_tzname_data.h(6.35 KB)
ðŸ“„ winservice.h(1.17 KB)
ðŸ“„ wqueue.h(1.53 KB)
ðŸ“„ wsrep.h(3.23 KB)
ðŸ“„ wsrep_applier.h(2.64 KB)
ðŸ“„ wsrep_binlog.h(3.36 KB)
ðŸ“„ wsrep_client_service.h(2.5 KB)
ðŸ“„ wsrep_client_state.h(1.53 KB)
ðŸ“„ wsrep_condition_variable.h(1.45 KB)
ðŸ“„ wsrep_high_priority_service.h(4.8 KB)
ðŸ“„ wsrep_mutex.h(1.19 KB)
ðŸ“„ wsrep_mysqld.h(20.64 KB)
ðŸ“„ wsrep_mysqld_c.h(1.2 KB)
ðŸ“„ wsrep_on.h(1.68 KB)
ðŸ“„ wsrep_priv.h(1.6 KB)
ðŸ“„ wsrep_schema.h(4.83 KB)
ðŸ“„ wsrep_server_service.h(3.55 KB)
ðŸ“„ wsrep_server_state.h(2.23 KB)
ðŸ“„ wsrep_sst.h(3.86 KB)
ðŸ“„ wsrep_storage_service.h(1.77 KB)
ðŸ“„ wsrep_thd.h(10.9 KB)
ðŸ“„ wsrep_trans_observer.h(17.69 KB)
ðŸ“„ wsrep_types.h(997 B)
ðŸ“„ wsrep_utils.h(9.07 KB)
ðŸ“„ wsrep_var.h(4.5 KB)
ðŸ“„ wsrep_xid.h(1.51 KB)
ðŸ“„ xa.h(1.8 KB)

Editing: item_geofunc.h

#ifndef ITEM_GEOFUNC_INCLUDED
#define ITEM_GEOFUNC_INCLUDED

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 Street, Fifth Floor, Boston, MA  02110-1335  USA */

/* This file defines all spatial functions */

#ifdef HAVE_SPATIAL

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

#include "sql_type_geom.h"
#include "item.h"
#include "gstream.h"
#include "spatial.h"
#include "gcalc_slicescan.h"
#include "gcalc_tools.h"

class Item_geometry_func: public Item_str_func
{
public:
  Item_geometry_func(THD *thd): Item_str_func(thd) {}
  Item_geometry_func(THD *thd, Item *a): Item_str_func(thd, a) {}
  Item_geometry_func(THD *thd, Item *a, Item *b): Item_str_func(thd, a, b) {}
  Item_geometry_func(THD *thd, Item *a, Item *b, Item *c):
    Item_str_func(thd, a, b, c) {}
  Item_geometry_func(THD *thd, List<Item> &list): Item_str_func(thd, list) {}
  bool fix_length_and_dec() override;
  const Type_handler *type_handler() const override
  { return &type_handler_geometry; }
};

/*
  Functions returning REAL measurements of a single GEOMETRY argument
*/
class Item_real_func_args_geometry: public Item_real_func
{
protected:
  String value;
  bool check_arguments() const override
  {
    DBUG_ASSERT(arg_count == 1);
    return Type_handler_geometry::check_type_geom_or_binary(func_name_cstring(),
                                                            args[0]);
  }
public:
  Item_real_func_args_geometry(THD *thd, Item *a)
   :Item_real_func(thd, a) {}
};

/*
  Functions returning INT measurements of a single GEOMETRY argument
*/
class Item_long_func_args_geometry: public Item_long_func
{
  bool check_arguments() const override
  {
    DBUG_ASSERT(arg_count == 1);
    return Type_handler_geometry::check_type_geom_or_binary(func_name_cstring(),
                                                            args[0]);
  }
protected:
  String value;
public:
  Item_long_func_args_geometry(THD *thd, Item *a)
   :Item_long_func(thd, a) {}
};

/*
  Functions returning BOOL measurements of a single GEOMETRY argument
*/
class Item_bool_func_args_geometry: public Item_bool_func
{
protected:
  String value;
  bool check_arguments() const override
  {
    DBUG_ASSERT(arg_count == 1);
    return Type_handler_geometry::check_type_geom_or_binary(func_name_cstring(),
                                                            args[0]);
  }
public:
  Item_bool_func_args_geometry(THD *thd, Item *a)
   :Item_bool_func(thd, a) {}
};

/*
  Functions returning ASCII string measurements of a single GEOMETRY argument
*/
class Item_str_ascii_func_args_geometry: public Item_str_ascii_func
{
protected:
  bool check_arguments() const override
  {
    DBUG_ASSERT(arg_count >= 1);
    return Type_handler_geometry::check_type_geom_or_binary(func_name_cstring(),
                                                            args[0]);
  }
public:
  Item_str_ascii_func_args_geometry(THD *thd, Item *a)
   :Item_str_ascii_func(thd, a) {}
  Item_str_ascii_func_args_geometry(THD *thd, Item *a, Item *b)
   :Item_str_ascii_func(thd, a, b) {}
  Item_str_ascii_func_args_geometry(THD *thd, Item *a, Item *b, Item *c)
   :Item_str_ascii_func(thd, a, b, c) {}
};

/*
  Functions returning binary string measurements of a single GEOMETRY argument
*/
class Item_binary_func_args_geometry: public Item_str_func
{
protected:
  bool check_arguments() const override
  {
    DBUG_ASSERT(arg_count >= 1);
    return Type_handler_geometry::check_type_geom_or_binary(func_name_cstring(),
                                                            args[0]);
  }
public:
  Item_binary_func_args_geometry(THD *thd, Item *a)
   :Item_str_func(thd, a) {}
};

/*
  Functions returning GEOMETRY measurements of a single GEOEMETRY argument
*/
class Item_geometry_func_args_geometry: public Item_geometry_func
{
protected:
  bool check_arguments() const override
  {
    DBUG_ASSERT(arg_count >= 1);
    return Type_handler_geometry::check_type_geom_or_binary(func_name_cstring(),
                                                            args[0]);
  }
public:
  Item_geometry_func_args_geometry(THD *thd, Item *a)
   :Item_geometry_func(thd, a) {}
  Item_geometry_func_args_geometry(THD *thd, Item *a, Item *b)
   :Item_geometry_func(thd, a, b) {}
};

/*
  Functions returning REAL result relationships between two GEOMETRY arguments
*/
class Item_real_func_args_geometry_geometry: public Item_real_func
{
protected:
  bool check_arguments() const override
  {
    DBUG_ASSERT(arg_count >= 2);
    return Type_handler_geometry::check_types_geom_or_binary(func_name_cstring(),
                                                             args, 0, 2);
  }
public:
  Item_real_func_args_geometry_geometry(THD *thd, Item *a, Item *b)
   :Item_real_func(thd, a, b) {}
};

/*
  Functions returning BOOL result relationships between two GEOMETRY arguments
*/
class Item_bool_func_args_geometry_geometry: public Item_bool_func
{
protected:
  String value;
  bool check_arguments() const override
  {
    DBUG_ASSERT(arg_count >= 2);
    return Type_handler_geometry::check_types_geom_or_binary(func_name_cstring(),
                                                             args, 0, 2);
  }
public:
  Item_bool_func_args_geometry_geometry(THD *thd, Item *a, Item *b, Item *c)
   :Item_bool_func(thd, a, b, c) {}
};

class Item_func_geometry_from_text: public Item_geometry_func
{
  bool check_arguments() const override
  {
    return args[0]->check_type_general_purpose_string(func_name_cstring()) ||
           check_argument_types_can_return_int(1, MY_MIN(2, arg_count));
  }
public:
  Item_func_geometry_from_text(THD *thd, Item *a): Item_geometry_func(thd, a) {}
  Item_func_geometry_from_text(THD *thd, Item *a, Item *srid):
    Item_geometry_func(thd, a, srid) {}
  LEX_CSTRING func_name_cstring() const override
  {
    static LEX_CSTRING name= {STRING_WITH_LEN("st_geometryfromtext") };
    return name;
  }
  String *val_str(String *) override;
  Item *do_get_copy(THD *thd) const override
  { return get_item_copy<Item_func_geometry_from_text>(thd, this); }
};

class Item_func_geometry_from_wkb: public Item_geometry_func
{
  bool check_arguments() const override
  {
    return
      Type_handler_geometry::check_type_geom_or_binary(func_name_cstring(), args[0]) ||
      check_argument_types_can_return_int(1, MY_MIN(2, arg_count));
  }
public:
  Item_func_geometry_from_wkb(THD *thd, Item *a): Item_geometry_func(thd, a) {}
  Item_func_geometry_from_wkb(THD *thd, Item *a, Item *srid):
    Item_geometry_func(thd, a, srid) {}
  LEX_CSTRING func_name_cstring() const override
  {
    static LEX_CSTRING name= {STRING_WITH_LEN("st_geometryfromwkb") };
    return name;
  }
  String *val_str(String *) override;
  Item *do_get_copy(THD *thd) const override
  { return get_item_copy<Item_func_geometry_from_wkb>(thd, this); }
};

class Item_func_geometry_from_json: public Item_geometry_func
{
  String tmp_js;
  bool check_arguments() const override
  {
    // TODO: check with Alexey, for better args[1] and args[2] type control
    return args[0]->check_type_general_purpose_string(func_name_cstring()) ||
           check_argument_types_traditional_scalar(1, MY_MIN(3, arg_count));
  }
public:
  Item_func_geometry_from_json(THD *thd, Item *js): Item_geometry_func(thd, js) {}
  Item_func_geometry_from_json(THD *thd, Item *js, Item *opt):
    Item_geometry_func(thd, js, opt) {}
  Item_func_geometry_from_json(THD *thd, Item *js, Item *opt, Item *srid):
    Item_geometry_func(thd, js, opt, srid) {}
  LEX_CSTRING func_name_cstring() const override
  {
    static LEX_CSTRING name= {STRING_WITH_LEN("st_geomfromgeojson") };
    return name;
  }
  String *val_str(String *) override;
  Item *do_get_copy(THD *thd) const override
  { return get_item_copy<Item_func_geometry_from_json>(thd, this); }
};

class Item_func_as_wkt: public Item_str_ascii_func_args_geometry
{
public:
  Item_func_as_wkt(THD *thd, Item *a)
   :Item_str_ascii_func_args_geometry(thd, a) {}
  LEX_CSTRING func_name_cstring() const override
  {
    static LEX_CSTRING name= {STRING_WITH_LEN("st_astext") };
    return name;
  }
  String *val_str_ascii(String *) override;
  bool fix_length_and_dec() override;
  Item *do_get_copy(THD *thd) const override
  { return get_item_copy<Item_func_as_wkt>(thd, this); }
};

class Item_func_as_wkb: public Item_binary_func_args_geometry
{
public:
  Item_func_as_wkb(THD *thd, Item *a)
   :Item_binary_func_args_geometry(thd, a) {}
  LEX_CSTRING func_name_cstring() const override
  {
    static LEX_CSTRING name= {STRING_WITH_LEN("st_aswkb") };
    return name;
  }
  String *val_str(String *) override;
  const Type_handler *type_handler() const override
  { return &type_handler_long_blob; }
  bool fix_length_and_dec() override
  {
    collation.set(&my_charset_bin);
    decimals=0;
    max_length= (uint32) UINT_MAX32;
    set_maybe_null();
    return FALSE;
  }
  Item *do_get_copy(THD *thd) const override
  { return get_item_copy<Item_func_as_wkb>(thd, this); }
};

class Item_func_as_geojson: public Item_str_ascii_func_args_geometry
{
  bool check_arguments() const override
  {
    // TODO: check with Alexey, for better args[1] and args[2] type control
    return Item_str_ascii_func_args_geometry::check_arguments() ||
           check_argument_types_traditional_scalar(1, MY_MIN(3, arg_count));
  }
public:
  Item_func_as_geojson(THD *thd, Item *js)
   :Item_str_ascii_func_args_geometry(thd, js) {}
  Item_func_as_geojson(THD *thd, Item *js, Item *max_dec_digits)
   :Item_str_ascii_func_args_geometry(thd, js, max_dec_digits) {}
  Item_func_as_geojson(THD *thd, Item *js, Item *max_dec_digits, Item *opt)
   :Item_str_ascii_func_args_geometry(thd, js, max_dec_digits, opt) {}
  LEX_CSTRING func_name_cstring() const override
  {
    static LEX_CSTRING name= {STRING_WITH_LEN("st_asgeojson") };
    return name;
  }
  bool fix_length_and_dec() override;
  String *val_str_ascii(String *) override;
  Item *do_get_copy(THD *thd) const override
  { return get_item_copy<Item_func_as_geojson>(thd, this); }
};

class Item_func_geometry_type: public Item_str_ascii_func_args_geometry
{
public:
  Item_func_geometry_type(THD *thd, Item *a)
   :Item_str_ascii_func_args_geometry(thd, a) {}
  String *val_str_ascii(String *) override;
  LEX_CSTRING func_name_cstring() const override
  {
    static LEX_CSTRING name= {STRING_WITH_LEN("st_geometrytype") };
    return name;
  }
  bool fix_length_and_dec() override
  {
    // "GeometryCollection" is the longest
    fix_length_and_charset(20, default_charset());
    set_maybe_null();
    return FALSE;
  };
  Item *do_get_copy(THD *thd) const override
  { return get_item_copy<Item_func_geometry_type>(thd, this); }
};

// #define HEAVY_CONVEX_HULL
class Item_func_convexhull: public Item_geometry_func_args_geometry
{
  class ch_node: public Gcalc_dyn_list::Item
  {
  public:
    const Gcalc_heap::Info *pi;
    ch_node *prev;
    Gcalc_dyn_list::Item *next;
    ch_node *get_next() { return (ch_node *) next; }
  };

Gcalc_heap collector;
  Gcalc_function func;
  Gcalc_dyn_list res_heap;

Gcalc_result_receiver res_receiver;
  String tmp_value;
#ifdef HEAVY_CONVEX_HULL
  Gcalc_scan_iterator scan_it;
#endif /*HEAVY_CONVEX_HULL*/
  ch_node *new_ch_node() { return (ch_node *) res_heap.new_item(); }
  int add_node_to_line(ch_node **p_cur, int dir, const Gcalc_heap::Info *pi);
public:
  Item_func_convexhull(THD *thd, Item *a)
   :Item_geometry_func_args_geometry(thd, a),
    res_heap(8192, sizeof(ch_node))
    {}
  LEX_CSTRING func_name_cstring() const override
  {
    static LEX_CSTRING name= {STRING_WITH_LEN("st_convexhull") };
    return name;
  }
  String *val_str(String *) override;
  Item *do_get_copy(THD *thd) const override
  { return get_item_copy<Item_func_convexhull>(thd, this); }
};

class Item_func_centroid: public Item_geometry_func_args_geometry
{
public:
  Item_func_centroid(THD *thd, Item *a)
   :Item_geometry_func_args_geometry(thd, a) {}
  LEX_CSTRING func_name_cstring() const override
  {
    static LEX_CSTRING name= {STRING_WITH_LEN("st_centroid") };
    return name;
  }
  String *val_str(String *) override;
  const Type_handler *type_handler() const override
  {
    return &type_handler_point;
  }
  Item *do_get_copy(THD *thd) const override
  { return get_item_copy<Item_func_centroid>(thd, this); }
};

class Item_func_envelope: public Item_geometry_func_args_geometry
{
public:
  Item_func_envelope(THD *thd, Item *a)
   :Item_geometry_func_args_geometry(thd, a) {}
  LEX_CSTRING func_name_cstring() const override
  {
    static LEX_CSTRING name= {STRING_WITH_LEN("st_envelope") };
    return name;
  }
  String *val_str(String *) override;
  const Type_handler *type_handler() const override
  {
    return &type_handler_polygon;
  }
  Item *do_get_copy(THD *thd) const override
  { return get_item_copy<Item_func_envelope>(thd, this); }
};

class Item_func_boundary: public Item_geometry_func_args_geometry
{
  class Transporter : public Gcalc_shape_transporter
  {
    Gcalc_result_receiver *m_receiver;
    uint n_points;
    Gcalc_function::shape_type current_type;
    double last_x, last_y;
  public:
    Transporter(Gcalc_result_receiver *receiver) :
      Gcalc_shape_transporter(NULL), m_receiver(receiver)
    {}
    int single_point(double x, double y) override;
    int start_line() override;
    int complete_line() override;
    int start_poly() override;
    int complete_poly() override;
    int start_ring() override;
    int complete_ring() override;
    int add_point(double x, double y) override;

int start_collection(int n_objects) override;
  };
  Gcalc_result_receiver res_receiver;
public:
  Item_func_boundary(THD *thd, Item *a)
   :Item_geometry_func_args_geometry(thd, a) {}
  LEX_CSTRING func_name_cstring() const override
  {
    static LEX_CSTRING name= {STRING_WITH_LEN("st_boundary") };
    return name;
  }
  String *val_str(String *) override;
  Item *do_get_copy(THD *thd) const override
  { return get_item_copy<Item_func_boundary>(thd, this); }
};

class Item_func_point: public Item_geometry_func
{
  bool check_arguments() const override
  { return check_argument_types_can_return_real(0, 2); }
public:
  Item_func_point(THD *thd, Item *a, Item *b): Item_geometry_func(thd, a, b) {}
  Item_func_point(THD *thd, Item *a, Item *b, Item *srid):
    Item_geometry_func(thd, a, b, srid) {}
  LEX_CSTRING func_name_cstring() const override
  {
    static LEX_CSTRING name= {STRING_WITH_LEN("point") };
    return name;
  }
  String *val_str(String *) override;
  const Type_handler *type_handler() const override
  {
    return &type_handler_point;
  }
  Item *do_get_copy(THD *thd) const override
  { return get_item_copy<Item_func_point>(thd, this); }
};

class Item_func_spatial_decomp: public Item_geometry_func_args_geometry
{
  enum Functype decomp_func;
public:
  Item_func_spatial_decomp(THD *thd, Item *a, Item_func::Functype ft):
    Item_geometry_func_args_geometry(thd, a) { decomp_func = ft; }
  LEX_CSTRING func_name_cstring() const override
  { 
    static LEX_CSTRING startpoint= {STRING_WITH_LEN("st_startpoint") };
    static LEX_CSTRING endpoint= {STRING_WITH_LEN("st_endpoint") };
    static LEX_CSTRING exteriorring= {STRING_WITH_LEN("st_exteriorring") };
    static LEX_CSTRING unknown= {STRING_WITH_LEN("spatial_decomp_unknown") };
    switch (decomp_func) {
      case SP_STARTPOINT:
        return startpoint;
      case SP_ENDPOINT:
        return endpoint;
      case SP_EXTERIORRING:
        return exteriorring;
      default:
	DBUG_ASSERT(0);  // Should never happened
        return unknown;
    }
  }
  String *val_str(String *) override;
  Item *do_get_copy(THD *thd) const override
  { return get_item_copy<Item_func_spatial_decomp>(thd, this); }
};

class Item_func_spatial_decomp_n: public Item_geometry_func_args_geometry
{
  enum Functype decomp_func_n;
  bool check_arguments() const override
  {
    return Item_geometry_func_args_geometry::check_arguments() ||
           args[1]->check_type_can_return_int(func_name_cstring());
  }
public:
  Item_func_spatial_decomp_n(THD *thd, Item *a, Item *b, Item_func::Functype ft)
   :Item_geometry_func_args_geometry(thd, a, b),
    decomp_func_n(ft)
  { }
  LEX_CSTRING func_name_cstring() const override
  { 
    static LEX_CSTRING pointn= {STRING_WITH_LEN("st_pointn") };
    static LEX_CSTRING geometryn= {STRING_WITH_LEN("st_geometryn") };
    static LEX_CSTRING interiorringn= {STRING_WITH_LEN("st_interiorringn") };
    static LEX_CSTRING unknown= {STRING_WITH_LEN("spatial_decomp_unknown") };

switch (decomp_func_n) {
      case SP_POINTN:
        return pointn;
      case SP_GEOMETRYN:
        return geometryn;
      case SP_INTERIORRINGN:
        return interiorringn;
      default:
	DBUG_ASSERT(0);  // Should never happened
        return unknown;
    }
  }
  String *val_str(String *) override;
  Item *do_get_copy(THD *thd) const override
  { return get_item_copy<Item_func_spatial_decomp_n>(thd, this); }
};

class Item_func_spatial_collection: public Item_geometry_func
{
  bool check_arguments() const override
  {
    return Type_handler_geometry::check_types_geom_or_binary(func_name_cstring(), args,
                                                             0, arg_count);
  }
  enum Geometry::wkbType coll_type; 
  enum Geometry::wkbType item_type;
public:
  Item_func_spatial_collection(THD *thd,
     List<Item> &list, enum Geometry::wkbType ct, enum Geometry::wkbType it):
  Item_geometry_func(thd, list)
  {
    coll_type=ct;
    item_type=it;
  }
  String *val_str(String *) override;
  bool fix_length_and_dec() override
  {
    if (Item_geometry_func::fix_length_and_dec())
      return TRUE;
    for (unsigned int i= 0; i < arg_count; ++i)
    {
      if (args[i]->fixed() && args[i]->field_type() != MYSQL_TYPE_GEOMETRY)
      {
        String str;
        args[i]->print(&str, QT_NO_DATA_EXPANSION);
        str.append('\0');
        my_error(ER_ILLEGAL_VALUE_FOR_TYPE, MYF(0), "non geometric",
                 str.ptr());
        return TRUE;
      }
    }
    return FALSE;
  }
};

class Item_func_geometrycollection: public Item_func_spatial_collection
{
public:
  Item_func_geometrycollection(THD *thd, List<Item> &list)
   :Item_func_spatial_collection(thd, list,
                                 Geometry::wkb_geometrycollection,
                                 Geometry::wkb_point)
  { }
  const Type_handler *type_handler() const override
  {
    return &type_handler_geometrycollection;
  }
  LEX_CSTRING func_name_cstring() const override
  {
    static LEX_CSTRING name= {STRING_WITH_LEN("geometrycollection") };
    return name;
  }
  Item *do_get_copy(THD *thd) const override
  { return get_item_copy<Item_func_geometrycollection>(thd, this); }
};

class Item_func_linestring: public Item_func_spatial_collection
{
public:
  Item_func_linestring(THD *thd, List<Item> &list)
   :Item_func_spatial_collection(thd, list,
                                 Geometry::wkb_linestring,
                                 Geometry::wkb_point)
  { }
  const Type_handler *type_handler() const override
  { return &type_handler_linestring; }
  LEX_CSTRING func_name_cstring() const override
  {
    static LEX_CSTRING name= {STRING_WITH_LEN("linestring") };
    return name;
  }
  Item *do_get_copy(THD *thd) const override
  { return get_item_copy<Item_func_linestring>(thd, this); }
};

class Item_func_polygon: public Item_func_spatial_collection
{
public:
  Item_func_polygon(THD *thd, List<Item> &list)
   :Item_func_spatial_collection(thd, list,
                                 Geometry::wkb_polygon,
                                 Geometry::wkb_linestring)
  { }
  const Type_handler *type_handler() const override
  { return &type_handler_polygon; }
  LEX_CSTRING func_name_cstring() const override
  {
    static LEX_CSTRING name= {STRING_WITH_LEN("polygon") };
    return name;
  }
  Item *do_get_copy(THD *thd) const override
  { return get_item_copy<Item_func_polygon>(thd, this); }
};

class Item_func_multilinestring: public Item_func_spatial_collection
{
public:
  Item_func_multilinestring(THD *thd, List<Item> &list)
   :Item_func_spatial_collection(thd, list,
                                 Geometry::wkb_multilinestring,
                                 Geometry::wkb_linestring)
  { }
  const Type_handler *type_handler() const override
  {
    return &type_handler_multilinestring;
  }
  LEX_CSTRING func_name_cstring() const override
  {
    static LEX_CSTRING name= {STRING_WITH_LEN("multilinestring") };
    return name;
  }
  Item *do_get_copy(THD *thd) const override
  { return get_item_copy<Item_func_multilinestring>(thd, this); }
};

class Item_func_multipoint: public Item_func_spatial_collection
{
public:
  Item_func_multipoint(THD *thd, List<Item> &list)
   :Item_func_spatial_collection(thd, list,
                                 Geometry::wkb_multipoint,
                                 Geometry::wkb_point)
  { }
  const Type_handler *type_handler() const override
  {
    return &type_handler_multipoint;
  }
  LEX_CSTRING func_name_cstring() const override
  {
    static LEX_CSTRING name= {STRING_WITH_LEN("multipoint") };
    return name;
  }
  Item *do_get_copy(THD *thd) const override
  { return get_item_copy<Item_func_multipoint>(thd, this); }
};

class Item_func_multipolygon: public Item_func_spatial_collection
{
public:
  Item_func_multipolygon(THD *thd, List<Item> &list)
   :Item_func_spatial_collection(thd, list,
                                 Geometry::wkb_multipolygon,
                                 Geometry::wkb_polygon)
  { }
  const Type_handler *type_handler() const override
  {
    return &type_handler_multipolygon;
  }
  LEX_CSTRING func_name_cstring() const override
  {
    static LEX_CSTRING name= {STRING_WITH_LEN("multipolygon") };
    return name;
  }
  Item *do_get_copy(THD *thd) const override
  { return get_item_copy<Item_func_multipolygon>(thd, this); }
};

/*
  Spatial relations
*/

class Item_func_spatial_rel: public Item_bool_func2_with_rev
{
protected:
  enum Functype spatial_rel;
  String tmp_value1, tmp_value2;
  SEL_ARG *get_mm_leaf(RANGE_OPT_PARAM *param, Field *field,
                       KEY_PART *key_part,
                       Item_func::Functype type, Item *value) override;
  bool check_arguments() const override
  {
    DBUG_ASSERT(arg_count >= 2);
    return Type_handler_geometry::check_types_geom_or_binary(func_name_cstring(),
                                                             args, 0, 2);
  }
public:
  Item_func_spatial_rel(THD *thd, Item *a, Item *b, enum Functype sp_rel):
    Item_bool_func2_with_rev(thd, a, b), spatial_rel(sp_rel)
  {
    set_maybe_null();
  }
  enum Functype functype() const override { return spatial_rel; }
  enum Functype rev_functype() const override
  {
    switch (spatial_rel)
    {
      case SP_CONTAINS_FUNC:
        return SP_WITHIN_FUNC;
      case SP_WITHIN_FUNC:
        return SP_CONTAINS_FUNC;
      default:
        return spatial_rel;
    }
  }
  bool is_null() override { (void) val_int(); return null_value; }
  void add_key_fields(JOIN *join, KEY_FIELD **key_fields,
                      uint *and_level, table_map usable_tables,
                      SARGABLE_PARAM **sargables) override
  {
    return add_key_fields_optimize_op(join, key_fields, and_level,
                                      usable_tables, sargables, false);
  }
  bool need_parentheses_in_default() override { return false; }
  Item *do_build_clone(THD *thd) const override { return nullptr; }
};

class Item_func_spatial_mbr_rel: public Item_func_spatial_rel
{
public:
  Item_func_spatial_mbr_rel(THD *thd, Item *a, Item *b, enum Functype sp_rel):
    Item_func_spatial_rel(thd, a, b, sp_rel)
  { }
  bool val_bool() override;
  LEX_CSTRING func_name_cstring() const override;
  Item *do_get_copy(THD *thd) const override
  { return get_item_copy<Item_func_spatial_mbr_rel>(thd, this); }
};

class Item_func_spatial_precise_rel: public Item_func_spatial_rel
{
  Gcalc_heap collector;
  Gcalc_scan_iterator scan_it;
  Gcalc_function func;
public:
  Item_func_spatial_precise_rel(THD *thd, Item *a, Item *b, enum Functype sp_rel):
    Item_func_spatial_rel(thd, a, b, sp_rel), collector()
  { }
  bool val_bool() override;
  LEX_CSTRING func_name_cstring() const override;
  Item *do_get_copy(THD *thd) const override
  { return get_item_copy<Item_func_spatial_precise_rel>(thd, this); }
};

class Item_func_spatial_relate: public Item_bool_func_args_geometry_geometry
{
  Gcalc_heap collector;
  Gcalc_scan_iterator scan_it;
  Gcalc_function func;
  String tmp_value1, tmp_value2, tmp_matrix;
  bool check_arguments() const override
  {
    return Item_bool_func_args_geometry_geometry::check_arguments() ||
           args[2]->check_type_general_purpose_string(func_name_cstring());
  }
public:
  Item_func_spatial_relate(THD *thd, Item *a, Item *b, Item *matrix):
    Item_bool_func_args_geometry_geometry(thd, a, b, matrix)
  { }
  bool val_bool() override;
  LEX_CSTRING func_name_cstring() const override
  {
    static LEX_CSTRING name= {STRING_WITH_LEN("st_relate") };
    return name;
  }
  bool need_parentheses_in_default() override { return false; }
  Item *do_get_copy(THD *thd) const override
  { return get_item_copy<Item_func_spatial_relate>(thd, this); }
};

/*
  Spatial operations
*/

class Item_func_spatial_operation final: public Item_geometry_func
{
  bool check_arguments() const override
  {
    DBUG_ASSERT(arg_count >= 2);
    return Type_handler_geometry::check_types_geom_or_binary(func_name_cstring(),
                                                             args, 0, 2);
  }
public:
  Gcalc_function::op_type spatial_op;
  Gcalc_heap collector;
  Gcalc_function func;

Gcalc_result_receiver res_receiver;
  Gcalc_operation_reducer operation;
  String tmp_value1,tmp_value2;
public:
  Item_func_spatial_operation(THD *thd, Item *a,Item *b,
                              Gcalc_function::op_type sp_op):
    Item_geometry_func(thd, a, b), spatial_op(sp_op)
  {}
  virtual ~Item_func_spatial_operation();
  String *val_str(String *) override;
  LEX_CSTRING func_name_cstring() const override;
  void print(String *str, enum_query_type query_type) override
  {
    Item_func::print(str, query_type);
  }
  Item *do_get_copy(THD *thd) const override
  { return get_item_copy<Item_func_spatial_operation>(thd, this); }
};

class Item_func_buffer final : public Item_geometry_func_args_geometry
{
  bool check_arguments() const override
  {
    return Item_geometry_func_args_geometry::check_arguments() ||
           args[1]->check_type_can_return_real(func_name_cstring());
  }
protected:
  class Transporter : public Gcalc_operation_transporter
  {
    int m_npoints;
    double m_d;
    double x1,y1,x2,y2;
    double x00,y00,x01,y01;
    int add_edge_buffer(double x3, double y3, bool round_p1, bool round_p2);
    int add_last_edge_buffer();
    int add_point_buffer(double x, double y);
    int complete();
    int m_nshapes;
    Gcalc_function::op_type buffer_op;
    int last_shape_pos;
    bool skip_line;

public:
    Transporter(Gcalc_function *fn, Gcalc_heap *heap, double d) :
      Gcalc_operation_transporter(fn, heap), m_npoints(0), m_d(d),
      m_nshapes(0), buffer_op((d > 0.0) ? Gcalc_function::op_union :
                                          Gcalc_function::op_difference),
      skip_line(FALSE)
    {}
    int single_point(double x, double y) override;
    int start_line() override;
    int complete_line() override;
    int start_poly() override;
    int complete_poly() override;
    int start_ring() override;
    int complete_ring() override;
    int add_point(double x, double y) override;

int start_collection(int n_objects) override;
  };
  Gcalc_heap collector;
  Gcalc_function func;

Gcalc_result_receiver res_receiver;
  Gcalc_operation_reducer operation;

public:
  Item_func_buffer(THD *thd, Item *obj, Item *distance)
   :Item_geometry_func_args_geometry(thd, obj, distance) {}
  LEX_CSTRING func_name_cstring() const override
  {
    static LEX_CSTRING name= {STRING_WITH_LEN("st_buffer") };
    return name;
  }
  String *val_str(String *) override;
  Item *do_get_copy(THD *thd) const override
  { return get_item_copy<Item_func_buffer>(thd, this); }
};

class Item_func_isempty: public Item_bool_func_args_geometry
{
public:
  Item_func_isempty(THD *thd, Item *a)
   :Item_bool_func_args_geometry(thd, a) {}
  bool val_bool() override;
  LEX_CSTRING func_name_cstring() const override
  {
    static LEX_CSTRING name= {STRING_WITH_LEN("st_isempty") };
    return name;
  }
  bool fix_length_and_dec() override
  { set_maybe_null(); return FALSE; }
  bool need_parentheses_in_default() override { return false; }
  Item *do_get_copy(THD *thd) const override
  { return get_item_copy<Item_func_isempty>(thd, this); }
};

class Item_func_issimple: public Item_long_func_args_geometry
{
  Gcalc_heap collector;
  Gcalc_function func;
  Gcalc_scan_iterator scan_it;
  String tmp;
public:
  Item_func_issimple(THD *thd, Item *a)
   :Item_long_func_args_geometry(thd, a) {}
  longlong val_int() override;
  LEX_CSTRING func_name_cstring() const override
  {
    static LEX_CSTRING name= {STRING_WITH_LEN("st_issimple") };
    return name;
  }
  bool fix_length_and_dec() override { decimals=0; max_length=2; return FALSE; }
  decimal_digits_t decimal_precision() const override { return 1; }
  Item *do_get_copy(THD *thd) const override
  { return get_item_copy<Item_func_issimple>(thd, this); }
};

class Item_func_isclosed: public Item_long_func_args_geometry
{
public:
  Item_func_isclosed(THD *thd, Item *a)
   :Item_long_func_args_geometry(thd, a) {}
  longlong val_int() override;
  LEX_CSTRING func_name_cstring() const override
  {
    static LEX_CSTRING name= {STRING_WITH_LEN("st_isclosed") };
    return name;
  }
  bool fix_length_and_dec() override { decimals=0; max_length=2; return FALSE; }
  decimal_digits_t decimal_precision() const override { return 1; }
  Item *do_get_copy(THD *thd) const override
  { return get_item_copy<Item_func_isclosed>(thd, this); }
};

class Item_func_isring: public Item_func_issimple
{
public:
  Item_func_isring(THD *thd, Item *a): Item_func_issimple(thd, a) {}
  longlong val_int() override;
  LEX_CSTRING func_name_cstring() const override
  {
    static LEX_CSTRING name= {STRING_WITH_LEN("st_isring") };
    return name;
  }
  Item *do_get_copy(THD *thd) const override
  { return get_item_copy<Item_func_isring>(thd, this); }
};

class Item_func_dimension: public Item_long_func_args_geometry
{
public:
  Item_func_dimension(THD *thd, Item *a)
   :Item_long_func_args_geometry(thd, a) {}
  longlong val_int() override;
  LEX_CSTRING func_name_cstring() const override
  {
    static LEX_CSTRING name= {STRING_WITH_LEN("st_dimension") };
    return name;
  }
  bool fix_length_and_dec() override
  { max_length= 10; set_maybe_null(); return FALSE; }
  Item *do_get_copy(THD *thd) const override
  { return get_item_copy<Item_func_dimension>(thd, this); }
};

class Item_func_x: public Item_real_func_args_geometry
{
public:
  Item_func_x(THD *thd, Item *a): Item_real_func_args_geometry(thd, a) {}
  double val_real() override;
  LEX_CSTRING func_name_cstring() const override
  {
    static LEX_CSTRING name= {STRING_WITH_LEN("st_x") };
    return name;
  }
  bool fix_length_and_dec() override
  {
    if (Item_real_func::fix_length_and_dec())
      return TRUE;
    set_maybe_null();
    return FALSE;
  }
  Item *do_get_copy(THD *thd) const override
  { return get_item_copy<Item_func_x>(thd, this); }
};

class Item_func_y: public Item_real_func_args_geometry
{
public:
  Item_func_y(THD *thd, Item *a): Item_real_func_args_geometry(thd, a) {}
  double val_real() override;
  LEX_CSTRING func_name_cstring() const override
  {
    static LEX_CSTRING name= {STRING_WITH_LEN("st_y") };
    return name;
  }
  bool fix_length_and_dec() override
  {
    if (Item_real_func::fix_length_and_dec())
      return TRUE;
    set_maybe_null();
    return FALSE;
  }
  Item *do_get_copy(THD *thd) const override
  { return get_item_copy<Item_func_y>(thd, this); }
};

class Item_func_numgeometries: public Item_long_func_args_geometry
{
public:
  Item_func_numgeometries(THD *thd, Item *a)
   :Item_long_func_args_geometry(thd, a) {}
  longlong val_int() override;
  LEX_CSTRING func_name_cstring() const override
  {
    static LEX_CSTRING name= {STRING_WITH_LEN("st_numgeometries") };
    return name;
  }
  bool fix_length_and_dec() override
  { max_length= 10; set_maybe_null(); return FALSE; }
  Item *do_get_copy(THD *thd) const override
  { return get_item_copy<Item_func_numgeometries>(thd, this); }
};

class Item_func_numinteriorring: public Item_long_func_args_geometry
{
public:
  Item_func_numinteriorring(THD *thd, Item *a)
   :Item_long_func_args_geometry(thd, a) {}
  longlong val_int() override;
  LEX_CSTRING func_name_cstring() const override
  {
    static LEX_CSTRING name= {STRING_WITH_LEN("st_numinteriorrings") };
    return name;
  }
  bool fix_length_and_dec() override
  { max_length= 10; set_maybe_null(); return FALSE; }
  Item *do_get_copy(THD *thd) const override
  { return get_item_copy<Item_func_numinteriorring>(thd, this); }
};

class Item_func_numpoints: public Item_long_func_args_geometry
{
public:
  Item_func_numpoints(THD *thd, Item *a)
   :Item_long_func_args_geometry(thd, a) {}
  longlong val_int() override;
  LEX_CSTRING func_name_cstring() const override
  {
    static LEX_CSTRING name= {STRING_WITH_LEN("st_numpoints") };
    return name;
  }
  bool fix_length_and_dec() override
  { max_length= 10; set_maybe_null(); return FALSE; }
  Item *do_get_copy(THD *thd) const override
  { return get_item_copy<Item_func_numpoints>(thd, this); }
};

class Item_func_area: public Item_real_func_args_geometry
{
public:
  Item_func_area(THD *thd, Item *a): Item_real_func_args_geometry(thd, a) {}
  double val_real() override;
  LEX_CSTRING func_name_cstring() const override
  {
    static LEX_CSTRING name= {STRING_WITH_LEN("st_area") };
    return name;
  }
  bool fix_length_and_dec() override
  {
    if (Item_real_func::fix_length_and_dec())
      return TRUE;
    set_maybe_null();
    return FALSE;
  }
  Item *do_get_copy(THD *thd) const override
  { return get_item_copy<Item_func_area>(thd, this); }
};

class Item_func_glength: public Item_real_func_args_geometry
{
  String value;
public:
  Item_func_glength(THD *thd, Item *a)
   :Item_real_func_args_geometry(thd, a) {}
  double val_real() override;
  LEX_CSTRING func_name_cstring() const override
  {
    static LEX_CSTRING name= {STRING_WITH_LEN("st_length") };
    return name;
  }
  bool fix_length_and_dec() override
  {
    if (Item_real_func::fix_length_and_dec())
      return TRUE;
    set_maybe_null();
    return FALSE;
  }
  Item *do_get_copy(THD *thd) const override
  { return get_item_copy<Item_func_glength>(thd, this); }
};

class Item_func_srid: public Item_long_func_args_geometry
{
public:
  Item_func_srid(THD *thd, Item *a)
   :Item_long_func_args_geometry(thd, a) {}
  longlong val_int() override;
  LEX_CSTRING func_name_cstring() const override
  {
    static LEX_CSTRING name= {STRING_WITH_LEN("srid") };
    return name;
  }
  bool fix_length_and_dec() override
  { max_length= 10; set_maybe_null(); return FALSE; }
  Item *do_get_copy(THD *thd) const override
  { return get_item_copy<Item_func_srid>(thd, this); }
};

class Item_func_distance: public Item_real_func_args_geometry_geometry
{
  String tmp_value1;
  String tmp_value2;
  Gcalc_heap collector;
  Gcalc_function func;
  Gcalc_scan_iterator scan_it;
public:
  Item_func_distance(THD *thd, Item *a, Item *b)
   :Item_real_func_args_geometry_geometry(thd, a, b) {}
  double val_real() override;
  LEX_CSTRING func_name_cstring() const override
  {
    static LEX_CSTRING name= {STRING_WITH_LEN("st_distance") };
    return name;
  }
  Item *do_get_copy(THD *thd) const override
  { return get_item_copy<Item_func_distance>(thd, this); }
};

class Item_func_sphere_distance: public Item_real_func
{
  double spherical_distance_points(Geometry *g1, Geometry *g2,
                                   const double sphere_r);
public:
  Item_func_sphere_distance(THD *thd, List<Item> &list):
    Item_real_func(thd, list) {}
  double val_real() override;
  LEX_CSTRING func_name_cstring() const override
  {
    static LEX_CSTRING name= {STRING_WITH_LEN("st_distance_sphere") };
    return name;
  }
  Item *do_get_copy(THD *thd) const override
  { return get_item_copy<Item_func_sphere_distance>(thd, this); }
};

class Item_func_pointonsurface: public Item_geometry_func_args_geometry
{
  String tmp_value;
  Gcalc_heap collector;
  Gcalc_function func;
  Gcalc_scan_iterator scan_it;
public:
  Item_func_pointonsurface(THD *thd, Item *a)
   :Item_geometry_func_args_geometry(thd, a) {}
  LEX_CSTRING func_name_cstring() const override
  {
    static LEX_CSTRING name= {STRING_WITH_LEN("st_pointonsurface") };
    return name;
  }
  String *val_str(String *) override;
  const Type_handler *type_handler() const override
  {
    return &type_handler_point;
  }
  Item *do_get_copy(THD *thd) const override
  { return get_item_copy<Item_func_pointonsurface>(thd, this); }
};

#ifndef DBUG_OFF
class Item_func_gis_debug: public Item_long_func
{
  public:
    Item_func_gis_debug(THD *thd, Item *a): Item_long_func(thd, a)
    { null_value= false; }
    bool fix_length_and_dec() override { fix_char_length(10); return FALSE; }
  LEX_CSTRING func_name_cstring() const override
  {
    static LEX_CSTRING name= {STRING_WITH_LEN("st_gis_debug") };
    return name;
  }
    longlong val_int() override;
    bool check_vcol_func_processor(void *arg) override
    {
      return mark_unsupported_function(func_name(), "()", arg, VCOL_IMPOSSIBLE);
    }
    Item *do_get_copy(THD *thd) const override
    { return get_item_copy<Item_func_gis_debug>(thd, this); }
};
#endif

#define GEOM_NEW(thd, obj_constructor) new (thd->mem_root) obj_constructor
#define GEOM_TYPE(x) (x)

#else /*HAVE_SPATIAL*/

#define GEOM_NEW(thd, obj_constructor) NULL
#define GEOM_TYPE(x) NULL

#endif /*HAVE_SPATIAL*/
#endif /* ITEM_GEOFUNC_INCLUDED */

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