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#ifndef ITEM_GEOFUNC_INCLUDED
#define ITEM_GEOFUNC_INCLUDED
/* Copyright (c) 2000, 2011, Oracle and/or its affiliates. All rights reserved.
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 02110-1301, USA */
/* This file defines all spatial functions */
#ifdef HAVE_SPATIAL
#ifdef USE_PRAGMA_INTERFACE
#pragma interface /* gcc class implementation */
#endif
class Item_geometry_func: public Item_str_func
{
public:
Item_geometry_func() :Item_str_func() {}
Item_geometry_func(Item *a) :Item_str_func(a) {}
Item_geometry_func(Item *a,Item *b) :Item_str_func(a,b) {}
Item_geometry_func(Item *a,Item *b,Item *c) :Item_str_func(a,b,c) {}
Item_geometry_func(List<Item> &list) :Item_str_func(list) {}
void fix_length_and_dec();
enum_field_types field_type() const { return MYSQL_TYPE_GEOMETRY; }
Field *tmp_table_field(TABLE *t_arg);
bool is_null() { (void) val_int(); return null_value; }
};
class Item_func_geometry_from_text: public Item_geometry_func
{
public:
Item_func_geometry_from_text(Item *a) :Item_geometry_func(a) {}
Item_func_geometry_from_text(Item *a, Item *srid) :Item_geometry_func(a, srid) {}
const char *func_name() const { return "geometryfromtext"; }
String *val_str(String *);
};
class Item_func_geometry_from_wkb: public Item_geometry_func
{
public:
Item_func_geometry_from_wkb(Item *a): Item_geometry_func(a) {}
Item_func_geometry_from_wkb(Item *a, Item *srid): Item_geometry_func(a, srid) {}
const char *func_name() const { return "geometryfromwkb"; }
String *val_str(String *);
};
class Item_func_as_wkt: public Item_str_ascii_func
{
public:
Item_func_as_wkt(Item *a): Item_str_ascii_func(a) {}
const char *func_name() const { return "astext"; }
String *val_str_ascii(String *);
void fix_length_and_dec();
};
class Item_func_as_wkb: public Item_geometry_func
{
public:
Item_func_as_wkb(Item *a): Item_geometry_func(a) {}
const char *func_name() const { return "aswkb"; }
String *val_str(String *);
enum_field_types field_type() const { return MYSQL_TYPE_BLOB; }
};
class Item_func_geometry_type: public Item_str_ascii_func
{
public:
Item_func_geometry_type(Item *a): Item_str_ascii_func(a) {}
String *val_str_ascii(String *);
const char *func_name() const { return "geometrytype"; }
void fix_length_and_dec()
{
// "GeometryCollection" is the longest
fix_length_and_charset(20, default_charset());
maybe_null= 1;
};
};
class Item_func_centroid: public Item_geometry_func
{
public:
Item_func_centroid(Item *a): Item_geometry_func(a) {}
const char *func_name() const { return "centroid"; }
String *val_str(String *);
Field::geometry_type get_geometry_type() const;
};
class Item_func_envelope: public Item_geometry_func
{
public:
Item_func_envelope(Item *a): Item_geometry_func(a) {}
const char *func_name() const { return "envelope"; }
String *val_str(String *);
Field::geometry_type get_geometry_type() const;
};
class Item_func_point: public Item_geometry_func
{
public:
Item_func_point(Item *a, Item *b): Item_geometry_func(a, b) {}
Item_func_point(Item *a, Item *b, Item *srid): Item_geometry_func(a, b, srid) {}
const char *func_name() const { return "point"; }
String *val_str(String *);
Field::geometry_type get_geometry_type() const;
};
class Item_func_spatial_decomp: public Item_geometry_func
{
enum Functype decomp_func;
public:
Item_func_spatial_decomp(Item *a, Item_func::Functype ft) :
Item_geometry_func(a) { decomp_func = ft; }
const char *func_name() const
{
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 "spatial_decomp_unknown";
}
}
String *val_str(String *);
};
class Item_func_spatial_decomp_n: public Item_geometry_func
{
enum Functype decomp_func_n;
public:
Item_func_spatial_decomp_n(Item *a, Item *b, Item_func::Functype ft):
Item_geometry_func(a, b) { decomp_func_n = ft; }
const char *func_name() const
{
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 "spatial_decomp_n_unknown";
}
}
String *val_str(String *);
};
class Item_func_spatial_collection: public Item_geometry_func
{
String tmp_value;
enum Geometry::wkbType coll_type;
enum Geometry::wkbType item_type;
public:
Item_func_spatial_collection(
List<Item> &list, enum Geometry::wkbType ct, enum Geometry::wkbType it):
Item_geometry_func(list)
{
coll_type=ct;
item_type=it;
}
String *val_str(String *);
void fix_length_and_dec()
{
Item_geometry_func::fix_length_and_dec();
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_ORDINARY);
str.append('\0');
my_error(ER_ILLEGAL_VALUE_FOR_TYPE, MYF(0), "non geometric",
str.ptr());
}
}
}
const char *func_name() const { return "multipoint"; }
};
/*
Spatial relations
*/
class Item_func_spatial_rel: public Item_bool_func2
{
enum Functype spatial_rel;
public:
Item_func_spatial_rel(Item *a,Item *b, enum Functype sp_rel) :
Item_bool_func2(a,b) { spatial_rel = sp_rel; }
longlong val_int();
enum Functype functype() const
{
switch (spatial_rel) {
case SP_CONTAINS_FUNC:
return SP_WITHIN_FUNC;
case SP_WITHIN_FUNC:
return SP_CONTAINS_FUNC;
default:
return spatial_rel;
}
}
enum Functype rev_functype() const { return spatial_rel; }
const char *func_name() const
{
switch (spatial_rel) {
case SP_CONTAINS_FUNC:
return "contains";
case SP_WITHIN_FUNC:
return "within";
case SP_EQUALS_FUNC:
return "equals";
case SP_DISJOINT_FUNC:
return "disjoint";
case SP_INTERSECTS_FUNC:
return "intersects";
case SP_TOUCHES_FUNC:
return "touches";
case SP_CROSSES_FUNC:
return "crosses";
case SP_OVERLAPS_FUNC:
return "overlaps";
default:
DBUG_ASSERT(0); // Should never happened
return "sp_unknown";
}
}
virtual inline void print(String *str, enum_query_type query_type)
{
Item_func::print(str, query_type);
}
void fix_length_and_dec() { maybe_null= 1; }
bool is_null() { (void) val_int(); return null_value; }
};
class Item_func_isempty: public Item_bool_func
{
public:
Item_func_isempty(Item *a): Item_bool_func(a) {}
longlong val_int();
optimize_type select_optimize() const { return OPTIMIZE_NONE; }
const char *func_name() const { return "isempty"; }
void fix_length_and_dec() { maybe_null= 1; }
};
class Item_func_issimple: public Item_bool_func
{
public:
Item_func_issimple(Item *a): Item_bool_func(a) {}
longlong val_int();
optimize_type select_optimize() const { return OPTIMIZE_NONE; }
const char *func_name() const { return "issimple"; }
void fix_length_and_dec() { maybe_null= 1; }
};
class Item_func_isclosed: public Item_bool_func
{
public:
Item_func_isclosed(Item *a): Item_bool_func(a) {}
longlong val_int();
optimize_type select_optimize() const { return OPTIMIZE_NONE; }
const char *func_name() const { return "isclosed"; }
void fix_length_and_dec() { maybe_null= 1; }
};
class Item_func_dimension: public Item_int_func
{
String value;
public:
Item_func_dimension(Item *a): Item_int_func(a) {}
longlong val_int();
const char *func_name() const { return "dimension"; }
void fix_length_and_dec() { max_length= 10; maybe_null= 1; }
};
class Item_func_x: public Item_real_func
{
String value;
public:
Item_func_x(Item *a): Item_real_func(a) {}
double val_real();
const char *func_name() const { return "x"; }
void fix_length_and_dec()
{
Item_real_func::fix_length_and_dec();
maybe_null= 1;
}
};
class Item_func_y: public Item_real_func
{
String value;
public:
Item_func_y(Item *a): Item_real_func(a) {}
double val_real();
const char *func_name() const { return "y"; }
void fix_length_and_dec()
{
Item_real_func::fix_length_and_dec();
maybe_null= 1;
}
};
class Item_func_numgeometries: public Item_int_func
{
String value;
public:
Item_func_numgeometries(Item *a): Item_int_func(a) {}
longlong val_int();
const char *func_name() const { return "numgeometries"; }
void fix_length_and_dec() { max_length= 10; maybe_null= 1; }
};
class Item_func_numinteriorring: public Item_int_func
{
String value;
public:
Item_func_numinteriorring(Item *a): Item_int_func(a) {}
longlong val_int();
const char *func_name() const { return "numinteriorrings"; }
void fix_length_and_dec() { max_length= 10; maybe_null= 1; }
};
class Item_func_numpoints: public Item_int_func
{
String value;
public:
Item_func_numpoints(Item *a): Item_int_func(a) {}
longlong val_int();
const char *func_name() const { return "numpoints"; }
void fix_length_and_dec() { max_length= 10; maybe_null= 1; }
};
class Item_func_area: public Item_real_func
{
String value;
public:
Item_func_area(Item *a): Item_real_func(a) {}
double val_real();
const char *func_name() const { return "area"; }
void fix_length_and_dec()
{
Item_real_func::fix_length_and_dec();
maybe_null= 1;
}
};
class Item_func_glength: public Item_real_func
{
String value;
public:
Item_func_glength(Item *a): Item_real_func(a) {}
double val_real();
const char *func_name() const { return "glength"; }
void fix_length_and_dec()
{
Item_real_func::fix_length_and_dec();
maybe_null= 1;
}
};
class Item_func_srid: public Item_int_func
{
String value;
public:
Item_func_srid(Item *a): Item_int_func(a) {}
longlong val_int();
const char *func_name() const { return "srid"; }
void fix_length_and_dec() { max_length= 10; maybe_null= 1; }
};
#define GEOM_NEW(thd, obj_constructor) new (thd->mem_root) obj_constructor
#else /*HAVE_SPATIAL*/
#define GEOM_NEW(thd, obj_constructor) NULL
#endif
#endif /* ITEM_GEOFUNC_INCLUDED */
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