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#ifndef ITEM_GEOFUNC_INCLUDED
#define ITEM_GEOFUNC_INCLUDED
/* Copyright (c) 2000, 2016 Oracle and/or its affiliates.
Copyright (C) 2011, 2021, MariaDB
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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