golden hour

/usr/include/mysql/server/private

File/Folder	Size	Actions
aria_backup.h	1.51 KB
assume_aligned.h	2.29 KB
atomic	-
authors.h	9.9 KB
backup.h	1.21 KB
bounded_queue.h	6.67 KB
client_settings.h	1.89 KB
compat56.h	2.23 KB
config.h	14.18 KB
contributors.h	4.76 KB
create_options.h	4.42 KB
custom_conf.h	1.06 KB
datadict.h	1.53 KB
debug_sync.h	2 KB
derived_handler.h	2.32 KB
derror.h	980 B
des_key_file.h	1.21 KB
discover.h	1.53 KB
dur_prop.h	1.06 KB
embedded_priv.h	1.62 KB
event_data_objects.h	4.09 KB
event_db_repository.h	3.56 KB
event_parse_data.h	2.83 KB
event_queue.h	3.36 KB
event_scheduler.h	3.21 KB
events.h	4.59 KB
field.h	211.96 KB
field_comp.h	1.15 KB
filesort.h	6.67 KB
filesort_utils.h	8 KB
ft_global.h	3.04 KB
gcalc_slicescan.h	16.87 KB
gcalc_tools.h	11.62 KB
grant.h	2.69 KB
group_by_handler.h	3.45 KB
gstream.h	2.38 KB
ha_partition.h	62.22 KB
ha_sequence.h	5.94 KB
handle_connections_win.h	884 B
handler.h	188.39 KB
hash.h	4.34 KB
hash_filo.h	5.55 KB
heap.h	9.2 KB
hostname.h	5.29 KB
ilist.h	6.85 KB
init.h	852 B
innodb_priv.h	1.29 KB
item.h	263.12 KB
item_cmpfunc.h	128.01 KB
item_create.h	11.22 KB
item_func.h	124.59 KB
item_geofunc.h	34.69 KB
item_jsonfunc.h	19.8 KB
item_row.h	5.43 KB
item_strfunc.h	64.55 KB
item_subselect.h	56.19 KB
item_sum.h	69.2 KB
item_timefunc.h	57.85 KB
item_vers.h	3.79 KB
item_windowfunc.h	32.61 KB
item_xmlfunc.h	4.36 KB
key.h	2 KB
keycaches.h	1.95 KB
lex.h	28.9 KB
lex_ident.h	2.07 KB
lex_string.h	3.97 KB
lex_symbol.h	1.29 KB
lf.h	6.31 KB
lock.h	2.15 KB
log.h	44.46 KB
log_event.h	178.94 KB
log_event_data_type.h	1.85 KB
log_event_old.h	19.32 KB
log_slow.h	1.98 KB
maria.h	5.73 KB
mariadb.h	1.25 KB
mdl.h	36.78 KB
mem_root_array.h	6.94 KB
message.h	1.17 KB
multi_range_read.h	22.58 KB
my_alarm.h	2.37 KB
my_apc.h	4.62 KB
my_atomic.h	7.11 KB
my_atomic_wrapper.h	2.92 KB
my_base.h	26.5 KB
my_bit.h	6.05 KB
my_bitmap.h	5.22 KB
my_check_opt.h	2.56 KB
my_compare.h	10.93 KB
my_context.h	6.59 KB
my_counter.h	1.68 KB
my_cpu.h	4.85 KB
my_crypt.h	904 B
my_decimal.h	13.43 KB
my_default.h	1.84 KB
my_handler_errors.h	4.74 KB
my_json_writer.h	17.9 KB
my_libwrap.h	1.16 KB
my_md5.h	1.45 KB
my_minidump.h	848 B
my_nosys.h	1.4 KB
my_rdtsc.h	8.15 KB
my_rnd.h	1.04 KB
my_service_manager.h	1.47 KB
my_stack_alloc.h	6.2 KB
my_stacktrace.h	3.14 KB
my_time.h	10.22 KB
my_tree.h	3.9 KB
my_uctype.h	67.9 KB
my_user.h	1.1 KB
myisam.h	17.11 KB
myisamchk.h	4.61 KB
myisammrg.h	4.78 KB
myisampack.h	14.58 KB
mysql_async.h	1.77 KB
mysqld.h	38.7 KB
mysqld_default_groups.h	204 B
mysqld_suffix.h	1.17 KB
mysys_err.h	2.95 KB
nt_servc.h	2.94 KB
opt_range.h	57.58 KB
opt_subselect.h	14.21 KB
opt_trace.h	8.11 KB
opt_trace_context.h	3.21 KB
parse_file.h	4.11 KB
partition_element.h	5.09 KB
partition_info.h	18.85 KB
password.h	1.14 KB
pfs_file_provider.h	3.08 KB
pfs_idle_provider.h	1.35 KB
pfs_memory_provider.h	1.59 KB
pfs_metadata_provider.h	1.85 KB
pfs_socket_provider.h	2.21 KB
pfs_stage_provider.h	1.52 KB
pfs_statement_provider.h	4.25 KB
pfs_table_provider.h	2.56 KB
pfs_thread_provider.h	5.43 KB
pfs_transaction_provider.h	2.78 KB
privilege.h	27.9 KB
probes_mysql.h	973 B
probes_mysql_dtrace.h	32.23 KB
probes_mysql_nodtrace.h	4.89 KB
procedure.h	6.57 KB
protocol.h	12.32 KB
proxy_protocol.h	548 B
queues.h	3.46 KB
records.h	3.03 KB
repl_failsafe.h	1.55 KB
replication.h	15.73 KB
rijndael.h	1.67 KB
rowid_filter.h	15.13 KB
rpl_constants.h	3.28 KB
rpl_filter.h	4.43 KB
rpl_gtid.h	13.31 KB
rpl_injector.h	9.43 KB
rpl_mi.h	13.65 KB
rpl_parallel.h	13.57 KB
rpl_record.h	1.55 KB
rpl_record_old.h	1.37 KB
rpl_reporting.h	2.96 KB
rpl_rli.h	31.8 KB
rpl_tblmap.h	3.1 KB
rpl_utility.h	9.4 KB
scheduler.h	2.99 KB
scope.h	1.76 KB
select_handler.h	2.18 KB
semisync.h	2.23 KB
semisync_master.h	22.7 KB
semisync_master_ack_receiver.h	5.73 KB
semisync_slave.h	3.47 KB
service_versions.h	2 KB
session_tracker.h	13.96 KB
set_var.h	16.1 KB
slave.h	11.99 KB
source_revision.h	67 B
sp.h	22.02 KB
sp_cache.h	2 KB
sp_head.h	63.05 KB
sp_pcontext.h	24.31 KB
sp_rcontext.h	14 KB
span.h	3.84 KB
spatial.h	21.82 KB
sql_acl.h	13.8 KB
sql_admin.h	2.78 KB
sql_alloc.h	1.83 KB
sql_alter.h	11.86 KB
sql_analyse.h	11.23 KB
sql_analyze_stmt.h	11.48 KB
sql_array.h	6.79 KB
sql_audit.h	13.62 KB
sql_base.h	24.83 KB
sql_basic_types.h	9.28 KB
sql_binlog.h	895 B
sql_bitmap.h	7.66 KB
sql_bootstrap.h	1.63 KB
sql_cache.h	21.15 KB
sql_callback.h	1.51 KB
sql_class.h	250.08 KB
sql_cmd.h	9.13 KB
sql_connect.h	3.99 KB
sql_const.h	10.94 KB
sql_crypt.h	1.4 KB
sql_cte.h	16.15 KB
sql_cursor.h	2.26 KB
sql_db.h	2.16 KB
sql_debug.h	4.65 KB
sql_delete.h	1.31 KB
sql_derived.h	1.26 KB
sql_digest.h	3.73 KB
sql_digest_stream.h	1.53 KB
sql_do.h	954 B
sql_error.h	38.12 KB
sql_explain.h	27.1 KB
sql_expression_cache.h	4.26 KB
sql_get_diagnostics.h	7.68 KB
sql_handler.h	2.84 KB
sql_help.h	920 B
sql_hset.h	3.56 KB
sql_i_s.h	7.97 KB
sql_insert.h	2.39 KB
sql_join_cache.h	47.44 KB
sql_lex.h	166.31 KB
sql_lifo_buffer.h	9.45 KB
sql_limit.h	2.38 KB
sql_list.h	21.56 KB
sql_load.h	1.25 KB
sql_locale.h	2.64 KB
sql_manager.h	960 B
sql_mode.h	6.58 KB
sql_parse.h	8.26 KB
sql_partition.h	11.75 KB
sql_partition_admin.h	5.8 KB
sql_plist.h	7.55 KB
sql_plugin.h	7.39 KB
sql_plugin_compat.h	2.18 KB
sql_prepare.h	11.14 KB
sql_priv.h	17.67 KB
sql_profile.h	7.63 KB
sql_reload.h	1.01 KB
sql_rename.h	982 B
sql_repl.h	2.96 KB
sql_schema.h	3.23 KB
sql_select.h	86.56 KB
sql_sequence.h	5.06 KB
sql_servers.h	1.74 KB
sql_show.h	9.39 KB
sql_signal.h	3.28 KB
sql_sort.h	21.39 KB
sql_statistics.h	11.96 KB
sql_string.h	36.43 KB
sql_table.h	11.07 KB
sql_tablespace.h	956 B
sql_test.h	1.55 KB
sql_time.h	8.18 KB
sql_trigger.h	10.76 KB
sql_truncate.h	2.03 KB
sql_tvc.h	2.36 KB
sql_type.h	286 KB
sql_type_geom.h	18.53 KB
sql_type_int.h	9.73 KB
sql_type_json.h	6 KB
sql_type_real.h	1.23 KB
sql_type_string.h	1.59 KB
sql_udf.h	4.74 KB
sql_union.h	1.04 KB
sql_update.h	1.88 KB
sql_view.h	2.33 KB
sql_window.h	6.65 KB
ssl_compat.h	3.07 KB
strfunc.h	2.22 KB
structs.h	25.13 KB
sys_vars_shared.h	2.67 KB
t_ctype.h	5.51 KB
table.h	112.29 KB
table_cache.h	4.13 KB
thr_alarm.h	2.87 KB
thr_lock.h	6.7 KB
thr_malloc.h	1.17 KB
thr_timer.h	1.53 KB
thread_cache.h	5.77 KB
thread_pool_priv.h	4 KB
threadpool.h	4.51 KB
threadpool_generic.h	3.83 KB
transaction.h	1.43 KB
tzfile.h	4.9 KB
tztime.h	3.32 KB
uniques.h	4.1 KB
unireg.h	7.43 KB
vers_string.h	2.47 KB
violite.h	9.71 KB
waiting_threads.h	4.43 KB
welcome_copyright_notice.h	1.19 KB
win_tzname_data.h	6.35 KB
winservice.h	1.17 KB
wqueue.h	1.53 KB
wsrep.h	3.23 KB
wsrep_applier.h	2.64 KB
wsrep_binlog.h	3.36 KB
wsrep_client_service.h	2.5 KB
wsrep_client_state.h	1.53 KB
wsrep_condition_variable.h	1.45 KB
wsrep_high_priority_service.h	4.8 KB
wsrep_mutex.h	1.19 KB
wsrep_mysqld.h	19.88 KB
wsrep_mysqld_c.h	1.2 KB
wsrep_on.h	1.68 KB
wsrep_priv.h	1.6 KB
wsrep_schema.h	4.54 KB
wsrep_server_service.h	3.55 KB
wsrep_server_state.h	2.23 KB
wsrep_sst.h	3.86 KB
wsrep_storage_service.h	1.77 KB
wsrep_thd.h	10.58 KB
wsrep_trans_observer.h	17.81 KB
wsrep_types.h	997 B
wsrep_utils.h	9.07 KB
wsrep_var.h	4.17 KB
wsrep_xid.h	1.42 KB
xa.h	1.69 KB

Edit: 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(),
                                                            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(),
                                                            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(),
                                                            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(),
                                                            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(),
                                                            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(),
                                                            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(),
                                                             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(),
                                                             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()) ||
           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) {}
  const char *func_name() const override { return "st_geometryfromtext"; }
  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(), 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) {}
  const char *func_name() const override { return "st_geometryfromwkb"; }
  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()) ||
           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) {}
  const char *func_name() const override { return "st_geomfromgeojson"; }
  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) {}
  const char *func_name() const override { return "st_astext"; }
  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) {}
  const char *func_name() const override { return "st_aswkb"; }
  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;
    maybe_null= 1;
    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) {}
  const char *func_name() const override { return "st_asgeojson"; }
  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;
  const char *func_name() const override { return "st_geometrytype"; }
  bool fix_length_and_dec() override
  {
    // "GeometryCollection" is the longest
    fix_length_and_charset(20, default_charset());
    maybe_null= 1;
    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))
    {}
  const char *func_name() const override { return "st_convexhull"; }
  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) {}
  const char *func_name() const override { return "st_centroid"; }
  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) {}
  const char *func_name() const override { return "st_envelope"; }
  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) {}
  const char *func_name() const override { return "st_boundary"; }
  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) {}
  const char *func_name() const override { return "point"; }
  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; }
  const char *func_name() const override 
  { 
    switch (decomp_func)
    {
      case SP_STARTPOINT:
        return "st_startpoint";
      case SP_ENDPOINT:
        return "st_endpoint";
      case SP_EXTERIORRING:
        return "st_exteriorring";
      default:
	DBUG_ASSERT(0);  // Should never happened
        return "spatial_decomp_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());
  }
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)
  { }
  const char *func_name() const override 
  { 
    switch (decomp_func_n)
    {
      case SP_POINTN:
        return "st_pointn";
      case SP_GEOMETRYN:
        return "st_geometryn";
      case SP_INTERIORRINGN:
        return "st_interiorringn";
      default:
	DBUG_ASSERT(0);  // Should never happened
        return "spatial_decomp_n_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(), 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]->is_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;
  }
  const char *func_name() const override { return "geometrycollection"; }
  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; }
  const char *func_name() const override { return "linestring"; }
  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; }
  const char *func_name() const override { return "polygon"; }
  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;
  }
  const char *func_name() const override { return "multilinestring"; }
  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;
  }
  const char *func_name() const override { return "multipoint"; }
  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;
  }
  const char *func_name() const override { return "multipolygon"; }
  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(),
                                                             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)
  {
    maybe_null= true;
  }
  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)
  { }
  longlong val_int() override;
  const char *func_name() 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()
  { }
  longlong val_int() override;
  const char *func_name() 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());
  }
public:
  Item_func_spatial_relate(THD *thd, Item *a, Item *b, Item *matrix):
    Item_bool_func_args_geometry_geometry(thd, a, b, matrix)
  { }
  longlong val_int() override;
  const char *func_name() const override { return "st_relate"; }
  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: 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(),
                                                             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;
  const char *func_name() 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: 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());
  }
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) {}
  const char *func_name() const override { return "st_buffer"; }
  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) {}
  longlong val_int() override;
  const char *func_name() const override { return "st_isempty"; }
  bool fix_length_and_dec() override { maybe_null= 1; 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;
  const char *func_name() const override { return "st_issimple"; }
  bool fix_length_and_dec() override { decimals=0; max_length=2; return FALSE; }
  uint 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;
  const char *func_name() const override { return "st_isclosed"; }
  bool fix_length_and_dec() override { decimals=0; max_length=2; return FALSE; }
  uint 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;
  const char *func_name() const override { return "st_isring"; }
  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;
  const char *func_name() const override { return "st_dimension"; }
  bool fix_length_and_dec() override { max_length= 10; maybe_null= 1; 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;
  const char *func_name() const override { return "st_x"; }
  bool fix_length_and_dec() override
  {
    if (Item_real_func::fix_length_and_dec())
      return TRUE;
    maybe_null= 1;
    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;
  const char *func_name() const override { return "st_y"; }
  bool fix_length_and_dec() override
  {
    if (Item_real_func::fix_length_and_dec())
      return TRUE;
    maybe_null= 1;
    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;
  const char *func_name() const override { return "st_numgeometries"; }
  bool fix_length_and_dec() override { max_length= 10; maybe_null= 1; 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;
  const char *func_name() const override { return "st_numinteriorrings"; }
  bool fix_length_and_dec() override { max_length= 10; maybe_null= 1; 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;
  const char *func_name() const override { return "st_numpoints"; }
  bool fix_length_and_dec() override { max_length= 10; maybe_null= 1; 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;
  const char *func_name() const override { return "st_area"; }
  bool fix_length_and_dec() override
  {
    if (Item_real_func::fix_length_and_dec())
      return TRUE;
    maybe_null= 1;
    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;
  const char *func_name() const override { return "st_length"; }
  bool fix_length_and_dec() override
  {
    if (Item_real_func::fix_length_and_dec())
      return TRUE;
    maybe_null= 1;
    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;
  const char *func_name() const override { return "srid"; }
  bool fix_length_and_dec() override { max_length= 10; maybe_null= 1; 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;
  const char *func_name() const override { return "st_distance"; }
  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;
  const char *func_name() const override { return "st_distance_sphere"; }
  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) {}
  const char *func_name() const override { return "st_pointonsurface"; }
  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; }
    const char *func_name() const override  { return "st_gis_debug"; }
    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 */