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Moved spatial functions to the sql/item_geofunc.cc file.

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This commit is contained in:
ram@mysql.r18.ru 2003-05-30 15:22:34 +05:00
parent ca17942619
commit a36d4212fc
12 changed files with 1018 additions and 1053 deletions
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1
.bzrignore
View file

@ -617,3 +617,4 @@ vio/test-sslclient
vio/test-sslserver
vio/viotest-ssl
include/readline/*.h
libmysqld/item_geofunc.cc

2
libmysqld/Makefile.am
View file

@ -42,7 +42,7 @@ sqlsources = derror.cc field.cc field_conv.cc filesort.cc \
hostname.cc init.cc password.c \
item.cc item_buff.cc item_cmpfunc.cc item_create.cc \
item_func.cc item_strfunc.cc item_sum.cc item_timefunc.cc \
item_uniq.cc item_subselect.cc item_row.cc\
item_geofunc.cc item_uniq.cc item_subselect.cc item_row.cc\
key.cc lock.cc log.cc log_event.cc mf_iocache.cc\
mini_client.cc protocol.cc net_serv.cc opt_ft.cc opt_range.cc \
opt_sum.cc procedure.cc records.cc sql_acl.cc \

4
sql/Makefile.am
View file

@ -46,7 +46,7 @@ mysqld_LDADD = @MYSQLD_EXTRA_LDFLAGS@ \
noinst_HEADERS = item.h item_func.h item_sum.h item_cmpfunc.h \
item_strfunc.h item_timefunc.h item_uniq.h \
item_create.h item_subselect.h item_row.h \
mysql_priv.h \
mysql_priv.h item_geofunc.h \
procedure.h sql_class.h sql_lex.h sql_list.h \
sql_manager.h sql_map.h sql_string.h unireg.h \
field.h handler.h \
@ -62,7 +62,7 @@ mysqld_SOURCES = sql_lex.cc sql_handler.cc \
item.cc item_sum.cc item_buff.cc item_func.cc \
item_cmpfunc.cc item_strfunc.cc item_timefunc.cc \
thr_malloc.cc item_create.cc item_subselect.cc \
item_row.cc \
item_row.cc item_geofunc.cc \
field.cc key.cc sql_class.cc sql_list.cc \
net_serv.cc protocol.cc lock.cc my_lock.c \
sql_string.cc sql_manager.cc sql_map.cc \

1
sql/item.h
View file

@ -644,6 +644,7 @@ public:
#include "item_row.h"
#include "item_cmpfunc.h"
#include "item_strfunc.h"
#include "item_geofunc.h"
#include "item_timefunc.h"
#include "item_uniq.h"
#include "item_subselect.h"

82
sql/item_cmpfunc.cc
View file

@ -2363,85 +2363,3 @@ longlong Item_cond_xor::val_int()
}
return (longlong) result;
}
/****************************************************************
Classes and functions for spatial relations
*****************************************************************/
longlong Item_func_spatial_rel::val_int()
{
String *res1= args[0]->val_str(&tmp_value1);
String *res2= args[1]->val_str(&tmp_value2);
Geometry g1, g2;
MBR mbr1, mbr2;
if ((null_value= (args[0]->null_value ||
args[1]->null_value ||
g1.create_from_wkb(res1->ptr() + SRID_SIZE,
res1->length() - SRID_SIZE) ||
g2.create_from_wkb(res2->ptr() + SRID_SIZE,
res2->length() - SRID_SIZE) ||
g1.get_mbr(&mbr1) ||
g2.get_mbr(&mbr2))))
return 0;
switch (spatial_rel)
{
case SP_CONTAINS_FUNC:
return mbr1.contains(&mbr2);
case SP_WITHIN_FUNC:
return mbr1.within(&mbr2);
case SP_EQUALS_FUNC:
return mbr1.equals(&mbr2);
case SP_DISJOINT_FUNC:
return mbr1.disjoint(&mbr2);
case SP_INTERSECTS_FUNC:
return mbr1.intersects(&mbr2);
case SP_TOUCHES_FUNC:
return mbr1.touches(&mbr2);
case SP_OVERLAPS_FUNC:
return mbr1.overlaps(&mbr2);
case SP_CROSSES_FUNC:
return 0;
default:
break;
}
null_value=1;
return 0;
}
longlong Item_func_isempty::val_int()
{
String tmp;
null_value=0;
return args[0]->null_value ? 1 : 0;
}
longlong Item_func_issimple::val_int()
{
String tmp;
String *wkb=args[0]->val_str(&tmp);
if ((null_value= (!wkb || args[0]->null_value )))
return 0;
/* TODO: Ramil or Holyfoot, add real IsSimple calculation */
return 0;
}
longlong Item_func_isclosed::val_int()
{
String tmp;
String *swkb= args[0]->val_str(&tmp);
Geometry geom;
int isclosed;
null_value= (!swkb ||
args[0]->null_value ||
geom.create_from_wkb(swkb->ptr() + SRID_SIZE,
swkb->length() - SRID_SIZE) ||
!GEOM_METHOD_PRESENT(geom,is_closed) ||
geom.is_closed(&isclosed));
return (longlong) isclosed;
}

76
sql/item_cmpfunc.h
View file

@ -850,79 +850,3 @@ inline Item *and_conds(Item *a,Item *b)
}
Item *and_expressions(Item *a, Item *b, Item **org_item);
/**************************************************************
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:
return "sp_unknown";
}
}
};
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"; }
};
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"; }
};
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"; }
};

136
sql/item_func.cc
View file

@ -2680,139 +2680,3 @@ longlong Item_func_is_used_lock::val_int()
null_value=0;
return ull->thread_id;
}
/**************************************************************************
Spatial functions
***************************************************************************/
longlong Item_func_dimension::val_int()
{
uint32 dim;
String *swkb= args[0]->val_str(&value);
Geometry geom;
null_value= (!swkb ||
args[0]->null_value ||
geom.create_from_wkb(swkb->ptr() + SRID_SIZE,
swkb->length() - SRID_SIZE) ||
geom.dimension(&dim));
return (longlong) dim;
}
longlong Item_func_numinteriorring::val_int()
{
uint32 num;
String *swkb= args[0]->val_str(&value);
Geometry geom;
null_value= (!swkb ||
geom.create_from_wkb(swkb->ptr() + SRID_SIZE,
swkb->length() - SRID_SIZE) ||
!GEOM_METHOD_PRESENT(geom, num_interior_ring) ||
geom.num_interior_ring(&num));
return (longlong) num;
}
longlong Item_func_numgeometries::val_int()
{
uint32 num= 0;
String *swkb= args[0]->val_str(&value);
Geometry geom;
null_value= (!swkb ||
geom.create_from_wkb(swkb->ptr() + SRID_SIZE,
swkb->length() - SRID_SIZE) ||
!GEOM_METHOD_PRESENT(geom, num_geometries) ||
geom.num_geometries(&num));
return (longlong) num;
}
longlong Item_func_numpoints::val_int()
{
uint32 num;
String *swkb= args[0]->val_str(&value);
Geometry geom;
null_value= (!swkb ||
args[0]->null_value ||
geom.create_from_wkb(swkb->ptr() + SRID_SIZE,
swkb->length() - SRID_SIZE) ||
!GEOM_METHOD_PRESENT(geom, num_points) ||
geom.num_points(&num));
return (longlong) num;
}
double Item_func_x::val()
{
double res;
String *swkb= args[0]->val_str(&value);
Geometry geom;
null_value= (!swkb ||
geom.create_from_wkb(swkb->ptr() + SRID_SIZE,
swkb->length() - SRID_SIZE) ||
!GEOM_METHOD_PRESENT(geom, get_x) ||
geom.get_x(&res));
return res;
}
double Item_func_y::val()
{
double res;
String *swkb= args[0]->val_str(&value);
Geometry geom;
null_value= (!swkb ||
geom.create_from_wkb(swkb->ptr() + SRID_SIZE,
swkb->length() - SRID_SIZE) ||
!GEOM_METHOD_PRESENT(geom, get_y) ||
geom.get_y(&res));
return res;
}
double Item_func_area::val()
{
double res;
String *swkb= args[0]->val_str(&value);
Geometry geom;
null_value= (!swkb ||
geom.create_from_wkb(swkb->ptr() + SRID_SIZE,
swkb->length() - SRID_SIZE) ||
!GEOM_METHOD_PRESENT(geom, area) ||
geom.area(&res));
return res;
}
double Item_func_glength::val()
{
double res;
String *swkb= args[0]->val_str(&value);
Geometry geom;
null_value= (!swkb ||
geom.create_from_wkb(swkb->ptr() + SRID_SIZE,
swkb->length() - SRID_SIZE) ||
!GEOM_METHOD_PRESENT(geom, length) ||
geom.length(&res));
return res;
}
longlong Item_func_srid::val_int()
{
String *swkb= args[0]->val_str(&value);
Geometry geom;
null_value= (!swkb ||
geom.create_from_wkb(swkb->ptr() + SRID_SIZE,
swkb->length() - SRID_SIZE));
uint32 res= uint4korr(swkb->ptr());
return (longlong) res;
}

95
sql/item_func.h
View file

@ -1037,101 +1037,6 @@ public:
};
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; }
};
class Item_func_x :public Item_real_func
{
String value;
public:
Item_func_x(Item *a) :Item_real_func(a) {}
double val();
const char *func_name() const { return "x"; }
};
class Item_func_y :public Item_real_func
{
String value;
public:
Item_func_y(Item *a) :Item_real_func(a) {}
double val();
const char *func_name() const { return "y"; }
};
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; }
};
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 "numinteriorring"; }
void fix_length_and_dec() { max_length=10; }
};
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; }
};
class Item_func_area :public Item_real_func
{
String value;
public:
Item_func_area(Item *a) :Item_real_func(a) {}
double val();
const char *func_name() const { return "area"; }
};
class Item_func_glength :public Item_real_func
{
String value;
public:
Item_func_glength(Item *a) :Item_real_func(a) {}
double val();
const char *func_name() const { return "glength"; }
};
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; }
};
class Item_func_match_nl :public Item_func_match
{
public:

653
sql/item_geofunc.cc Normal file
View file

@ -0,0 +1,653 @@
/* Copyright (C) 2000 MySQL AB & MySQL Finland AB & TCX DataKonsult AB
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; either version 2 of the License, or
(at your option) any later version.
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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
/* This file defines all spatial functions */
#ifdef __GNUC__
#pragma implementation // gcc: Class implementation
#endif
#include "mysql_priv.h"
#include "sql_acl.h"
#include <m_ctype.h>
String *Item_func_geometry_from_text::val_str(String *str)
{
Geometry geom;
String arg_val;
String *wkt= args[0]->val_str(&arg_val);
GTextReadStream trs(wkt->ptr(), wkt->length());
uint32 srid;
if ((arg_count == 2) && !args[1]->null_value)
srid= args[1]->val_int();
else
srid= 0;
if (str->reserve(SRID_SIZE, 512))
return 0;
str->length(0);
str->q_append(srid);
if ((null_value=(args[0]->null_value || geom.create_from_wkt(&trs, str, 0))))
return 0;
return str;
}
void Item_func_geometry_from_text::fix_length_and_dec()
{
max_length=MAX_BLOB_WIDTH;
}
String *Item_func_geometry_from_wkb::val_str(String *str)
{
String arg_val;
String *wkb= args[0]->val_str(&arg_val);
Geometry geom;
uint32 srid;
if ((arg_count == 2) && !args[1]->null_value)
srid= args[1]->val_int();
else
srid= 0;
if (str->reserve(SRID_SIZE, 512))
return 0;
str->length(0);
str->q_append(srid);
if ((null_value= (args[0]->null_value ||
geom.create_from_wkb(wkb->ptr(), wkb->length()))))
return 0;
str->append(*wkb);
return str;
}
void Item_func_geometry_from_wkb::fix_length_and_dec()
{
max_length=MAX_BLOB_WIDTH;
}
String *Item_func_as_text::val_str(String *str)
{
String arg_val;
String *swkb= args[0]->val_str(&arg_val);
Geometry geom;
if ((null_value= (args[0]->null_value ||
geom.create_from_wkb(swkb->ptr() + SRID_SIZE,
swkb->length() - SRID_SIZE))))
return 0;
str->length(0);
if ((null_value= geom.as_wkt(str)))
return 0;
return str;
}
void Item_func_as_text::fix_length_and_dec()
{
max_length=MAX_BLOB_WIDTH;
}
String *Item_func_as_wkb::val_str(String *str)
{
String arg_val;
String *swkb= args[0]->val_str(&arg_val);
Geometry geom;
if ((null_value= (args[0]->null_value ||
geom.create_from_wkb(swkb->ptr() + SRID_SIZE,
swkb->length() - SRID_SIZE))))
return 0;
str->copy(swkb->ptr() + SRID_SIZE, swkb->length() - SRID_SIZE,
&my_charset_bin);
return str;
}
void Item_func_as_wkb::fix_length_and_dec()
{
max_length= MAX_BLOB_WIDTH;
}
String *Item_func_geometry_type::val_str(String *str)
{
String *swkb= args[0]->val_str(str);
Geometry geom;
if ((null_value= (args[0]->null_value ||
geom.create_from_wkb(swkb->ptr() + SRID_SIZE,
swkb->length() - SRID_SIZE))))
return 0;
str->copy(geom.get_class_info()->m_name,
strlen(geom.get_class_info()->m_name),
default_charset_info);
return str;
}
String *Item_func_envelope::val_str(String *str)
{
String arg_val;
String *swkb= args[0]->val_str(&arg_val);
Geometry geom;
if ((null_value= args[0]->null_value ||
geom.create_from_wkb(swkb->ptr() + SRID_SIZE,
swkb->length() - SRID_SIZE)))
return 0;
uint32 srid= uint4korr(swkb->ptr());
str->length(0);
if (str->reserve(SRID_SIZE, 512))
return 0;
str->q_append(srid);
return (null_value= geom.envelope(str)) ? 0 : str;
}
String *Item_func_centroid::val_str(String *str)
{
String arg_val;
String *swkb= args[0]->val_str(&arg_val);
Geometry geom;
if ((null_value= args[0]->null_value ||
geom.create_from_wkb(swkb->ptr() + SRID_SIZE,
swkb->length() - SRID_SIZE) ||
!GEOM_METHOD_PRESENT(geom, centroid)))
return 0;
if (str->reserve(SRID_SIZE, 512))
return 0;
str->length(0);
uint32 srid= uint4korr(swkb->ptr());
str->q_append(srid);
return (null_value= geom.centroid(str)) ? 0 : str;
}
/*
Spatial decomposition functions
*/
String *Item_func_spatial_decomp::val_str(String *str)
{
String arg_val;
String *swkb= args[0]->val_str(&arg_val);
Geometry geom;
if ((null_value= (args[0]->null_value ||
geom.create_from_wkb(swkb->ptr() + SRID_SIZE,
swkb->length() - SRID_SIZE))))
return 0;
null_value= 1;
if (str->reserve(SRID_SIZE, 512))
return 0;
str->length(0);
uint32 srid= uint4korr(swkb->ptr());
str->q_append(srid);
switch(decomp_func)
{
case SP_STARTPOINT:
if (!GEOM_METHOD_PRESENT(geom,start_point) || geom.start_point(str))
goto ret;
break;
case SP_ENDPOINT:
if (!GEOM_METHOD_PRESENT(geom,end_point) || geom.end_point(str))
goto ret;
break;
case SP_EXTERIORRING:
if (!GEOM_METHOD_PRESENT(geom,exterior_ring) || geom.exterior_ring(str))
goto ret;
break;
default:
goto ret;
}
null_value= 0;
ret:
return null_value ? 0 : str;
}
String *Item_func_spatial_decomp_n::val_str(String *str)
{
String arg_val;
String *swkb= args[0]->val_str(&arg_val);
long n= (long) args[1]->val_int();
Geometry geom;
if ((null_value= (args[0]->null_value || args[1]->null_value ||
geom.create_from_wkb(swkb->ptr() + SRID_SIZE,
swkb->length() - SRID_SIZE))))
return 0;
null_value= 1;
if (str->reserve(SRID_SIZE, 512))
return 0;
str->length(0);
uint32 srid= uint4korr(swkb->ptr());
str->q_append(srid);
switch(decomp_func_n)
{
case SP_POINTN:
if (!GEOM_METHOD_PRESENT(geom,point_n) || geom.point_n(n,str))
goto ret;
break;
case SP_GEOMETRYN:
if (!GEOM_METHOD_PRESENT(geom,geometry_n) || geom.geometry_n(n,str))
goto ret;
break;
case SP_INTERIORRINGN:
if (!GEOM_METHOD_PRESENT(geom,interior_ring_n) ||
geom.interior_ring_n(n,str))
goto ret;
break;
default:
goto ret;
}
null_value= 0;
ret:
return null_value ? 0 : str;
}
/*
Functions to concatinate various spatial objects
*/
/*
* Concatinate doubles into Point
*/
String *Item_func_point::val_str(String *str)
{
double x= args[0]->val();
double y= args[1]->val();
if ( (null_value= (args[0]->null_value ||
args[1]->null_value ||
str->realloc(1 + 4 + 8 + 8))))
return 0;
str->length(0);
str->q_append((char)Geometry::wkbNDR);
str->q_append((uint32)Geometry::wkbPoint);
str->q_append(x);
str->q_append(y);
return str;
}
/*
Concatinates various items into various collections
with checkings for valid wkb type of items.
For example, MultiPoint can be a collection of Points only.
coll_type contains wkb type of target collection.
item_type contains a valid wkb type of items.
In the case when coll_type is wkbGeometryCollection,
we do not check wkb type of items, any is valid.
*/
String *Item_func_spatial_collection::val_str(String *str)
{
String arg_value;
uint i;
null_value= 1;
str->length(0);
if (str->reserve(1 + 4 + 4, 512))
return 0;
str->q_append((char) Geometry::wkbNDR);
str->q_append((uint32) coll_type);
str->q_append((uint32) arg_count);
for (i= 0; i < arg_count; ++i)
{
String *res= args[i]->val_str(&arg_value);
if (args[i]->null_value)
goto ret;
if ( coll_type == Geometry::wkbGeometryCollection )
{
/*
In the case of GeometryCollection we don't need
any checkings for item types, so just copy them
into target collection
*/
if ((null_value= str->reserve(res->length(), 512)))
goto ret;
str->q_append(res->ptr(), res->length());
}
else
{
enum Geometry::wkbType wkb_type;
uint32 len=res->length();
const char *data= res->ptr() + 1;
/*
In the case of named collection we must to
check that items are of specific type, let's
do this checking now
*/
if (len < 5)
goto ret;
wkb_type= (Geometry::wkbType) uint4korr(data);
data+= 4;
len-= 5;
if (wkb_type != item_type)
goto ret;
switch (coll_type) {
case Geometry::wkbMultiPoint:
case Geometry::wkbMultiLineString:
case Geometry::wkbMultiPolygon:
if (len < WKB_HEADER_SIZE)
goto ret;
data-= WKB_HEADER_SIZE;
len+= WKB_HEADER_SIZE;
if (str->reserve(len, 512))
goto ret;
str->q_append(data, len);
break;
case Geometry::wkbLineString:
if (str->reserve(POINT_DATA_SIZE, 512))
goto ret;
str->q_append(data, POINT_DATA_SIZE);
break;
case Geometry::wkbPolygon:
{
uint32 n_points;
double x1, y1, x2, y2;
if (len < 4 + 2 * POINT_DATA_SIZE)
goto ret;
uint32 llen= len;
const char *ldata= data;
n_points= uint4korr(data);
data+= 4;
float8get(x1, data);
data+= 8;
float8get(y1, data);
data+= 8;
data+= (n_points - 2) * POINT_DATA_SIZE;
float8get(x2, data);
float8get(y2, data + 8);
if ((x1 != x2) || (y1 != y2))
goto ret;
if (str->reserve(llen, 512))
goto ret;
str->q_append(ldata, llen);
}
break;
default:
goto ret;
}
}
}
if (str->length() > current_thd->variables.max_allowed_packet)
goto ret;
null_value = 0;
ret:
return null_value ? 0 : str;
}
/*
Functions for spatial relations
*/
longlong Item_func_spatial_rel::val_int()
{
String *res1= args[0]->val_str(&tmp_value1);
String *res2= args[1]->val_str(&tmp_value2);
Geometry g1, g2;
MBR mbr1, mbr2;
if ((null_value= (args[0]->null_value ||
args[1]->null_value ||
g1.create_from_wkb(res1->ptr() + SRID_SIZE,
res1->length() - SRID_SIZE) ||
g2.create_from_wkb(res2->ptr() + SRID_SIZE,
res2->length() - SRID_SIZE) ||
g1.get_mbr(&mbr1) ||
g2.get_mbr(&mbr2))))
return 0;
switch (spatial_rel)
{
case SP_CONTAINS_FUNC:
return mbr1.contains(&mbr2);
case SP_WITHIN_FUNC:
return mbr1.within(&mbr2);
case SP_EQUALS_FUNC:
return mbr1.equals(&mbr2);
case SP_DISJOINT_FUNC:
return mbr1.disjoint(&mbr2);
case SP_INTERSECTS_FUNC:
return mbr1.intersects(&mbr2);
case SP_TOUCHES_FUNC:
return mbr1.touches(&mbr2);
case SP_OVERLAPS_FUNC:
return mbr1.overlaps(&mbr2);
case SP_CROSSES_FUNC:
return 0;
default:
break;
}
null_value=1;
return 0;
}
longlong Item_func_isempty::val_int()
{
String tmp;
null_value=0;
return args[0]->null_value ? 1 : 0;
}
longlong Item_func_issimple::val_int()
{
String tmp;
String *wkb=args[0]->val_str(&tmp);
if ((null_value= (!wkb || args[0]->null_value )))
return 0;
/* TODO: Ramil or Holyfoot, add real IsSimple calculation */
return 0;
}
longlong Item_func_isclosed::val_int()
{
String tmp;
String *swkb= args[0]->val_str(&tmp);
Geometry geom;
int isclosed;
null_value= (!swkb ||
args[0]->null_value ||
geom.create_from_wkb(swkb->ptr() + SRID_SIZE,
swkb->length() - SRID_SIZE) ||
!GEOM_METHOD_PRESENT(geom,is_closed) ||
geom.is_closed(&isclosed));
return (longlong) isclosed;
}
/*
Numerical functions
*/
longlong Item_func_dimension::val_int()
{
uint32 dim;
String *swkb= args[0]->val_str(&value);
Geometry geom;
null_value= (!swkb ||
args[0]->null_value ||
geom.create_from_wkb(swkb->ptr() + SRID_SIZE,
swkb->length() - SRID_SIZE) ||
geom.dimension(&dim));
return (longlong) dim;
}
longlong Item_func_numinteriorring::val_int()
{
uint32 num;
String *swkb= args[0]->val_str(&value);
Geometry geom;
null_value= (!swkb ||
geom.create_from_wkb(swkb->ptr() + SRID_SIZE,
swkb->length() - SRID_SIZE) ||
!GEOM_METHOD_PRESENT(geom, num_interior_ring) ||
geom.num_interior_ring(&num));
return (longlong) num;
}
longlong Item_func_numgeometries::val_int()
{
uint32 num= 0;
String *swkb= args[0]->val_str(&value);
Geometry geom;
null_value= (!swkb ||
geom.create_from_wkb(swkb->ptr() + SRID_SIZE,
swkb->length() - SRID_SIZE) ||
!GEOM_METHOD_PRESENT(geom, num_geometries) ||
geom.num_geometries(&num));
return (longlong) num;
}
longlong Item_func_numpoints::val_int()
{
uint32 num;
String *swkb= args[0]->val_str(&value);
Geometry geom;
null_value= (!swkb ||
args[0]->null_value ||
geom.create_from_wkb(swkb->ptr() + SRID_SIZE,
swkb->length() - SRID_SIZE) ||
!GEOM_METHOD_PRESENT(geom, num_points) ||
geom.num_points(&num));
return (longlong) num;
}
double Item_func_x::val()
{
double res;
String *swkb= args[0]->val_str(&value);
Geometry geom;
null_value= (!swkb ||
geom.create_from_wkb(swkb->ptr() + SRID_SIZE,
swkb->length() - SRID_SIZE) ||
!GEOM_METHOD_PRESENT(geom, get_x) ||
geom.get_x(&res));
return res;
}
double Item_func_y::val()
{
double res;
String *swkb= args[0]->val_str(&value);
Geometry geom;
null_value= (!swkb ||
geom.create_from_wkb(swkb->ptr() + SRID_SIZE,
swkb->length() - SRID_SIZE) ||
!GEOM_METHOD_PRESENT(geom, get_y) ||
geom.get_y(&res));
return res;
}
double Item_func_area::val()
{
double res;
String *swkb= args[0]->val_str(&value);
Geometry geom;
null_value= (!swkb ||
geom.create_from_wkb(swkb->ptr() + SRID_SIZE,
swkb->length() - SRID_SIZE) ||
!GEOM_METHOD_PRESENT(geom, area) ||
geom.area(&res));
return res;
}
double Item_func_glength::val()
{
double res;
String *swkb= args[0]->val_str(&value);
Geometry geom;
null_value= (!swkb ||
geom.create_from_wkb(swkb->ptr() + SRID_SIZE,
swkb->length() - SRID_SIZE) ||
!GEOM_METHOD_PRESENT(geom, length) ||
geom.length(&res));
return res;
}
longlong Item_func_srid::val_int()
{
String *swkb= args[0]->val_str(&value);
Geometry geom;
null_value= (!swkb ||
geom.create_from_wkb(swkb->ptr() + SRID_SIZE,
swkb->length() - SRID_SIZE));
uint32 res= uint4korr(swkb->ptr());
return (longlong) res;
}

360
sql/item_geofunc.h Normal file
View file

@ -0,0 +1,360 @@
/* Copyright (C) 2000-2003 MySQL AB
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; either version 2 of the License, or
(at your option) any later version.
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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
/* This file defines all spatial functions */
#ifdef __GNUC__
#pragma interface /* gcc class implementation */
#endif
#define SRID_SIZE sizeof(uint32)
class Item_func_geometry_from_text: public Item_str_func
{
public:
Item_func_geometry_from_text(Item *a) :Item_str_func(a) {}
Item_func_geometry_from_text(Item *a, Item *srid) :Item_str_func(a, srid) {}
const char *func_name() const { return "geometryfromtext"; }
String *val_str(String *);
void fix_length_and_dec();
};
class Item_func_geometry_from_wkb: public Item_str_func
{
public:
Item_func_geometry_from_wkb(Item *a): Item_str_func(a) {}
Item_func_geometry_from_wkb(Item *a, Item *srid): Item_str_func(a, srid) {}
const char *func_name() const { return "geometryfromwkb"; }
String *val_str(String *);
void fix_length_and_dec();
};
class Item_func_as_text: public Item_str_func
{
public:
Item_func_as_text(Item *a): Item_str_func(a) {}
const char *func_name() const { return "astext"; }
String *val_str(String *);
void fix_length_and_dec();
};
class Item_func_as_wkb: public Item_str_func
{
public:
Item_func_as_wkb(Item *a): Item_str_func(a) {}
const char *func_name() const { return "aswkb"; }
String *val_str(String *);
void fix_length_and_dec();
};
class Item_func_geometry_type: public Item_str_func
{
public:
Item_func_geometry_type(Item *a): Item_str_func(a) {}
String *val_str(String *);
const char *func_name() const { return "geometrytype"; }
void fix_length_and_dec()
{
max_length=20; // "GeometryCollection" is the most long
};
};
class Item_func_centroid: public Item_str_func
{
public:
Item_func_centroid(Item *a): Item_str_func(a) {}
const char *func_name() const { return "centroid"; }
String *val_str(String *);
void fix_length_and_dec(){max_length=MAX_BLOB_WIDTH;}
};
class Item_func_envelope: public Item_str_func
{
public:
Item_func_envelope(Item *a): Item_str_func(a) {}
const char *func_name() const { return "envelope"; }
String *val_str(String *);
void fix_length_and_dec(){max_length=MAX_BLOB_WIDTH;}
};
class Item_func_point: public Item_str_func
{
public:
Item_func_point(Item *a, Item *b): Item_str_func(a, b) {}
Item_func_point(Item *a, Item *b, Item *srid): Item_str_func(a, b, srid) {}
const char *func_name() const { return "point"; }
String *val_str(String *);
void fix_length_and_dec(){max_length=MAX_BLOB_WIDTH;}
};
class Item_func_spatial_decomp: public Item_str_func
{
enum Functype decomp_func;
public:
Item_func_spatial_decomp(Item *a, Item_func::Functype ft) :
Item_str_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:
return "spatial_decomp_unknown";
}
}
String *val_str(String *);
void fix_length_and_dec(){max_length=MAX_BLOB_WIDTH;}
};
class Item_func_spatial_decomp_n: public Item_str_func
{
enum Functype decomp_func_n;
public:
Item_func_spatial_decomp_n(Item *a, Item *b, Item_func::Functype ft):
Item_str_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:
return "spatial_decomp_n_unknown";
}
}
String *val_str(String *);
void fix_length_and_dec(){max_length=MAX_BLOB_WIDTH;}
};
class Item_func_spatial_collection: public Item_str_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_str_func(list)
{
coll_type=ct;
item_type=it;
}
String *val_str(String *);
void fix_length_and_dec(){max_length=MAX_BLOB_WIDTH;}
const char *func_name() const { return "multipoint"; }
};
#ifdef HAVE_COMPRESS
class Item_func_compress: public Item_str_func
{
String buffer;
public:
Item_func_compress(Item *a):Item_str_func(a){}
String *val_str(String *);
void fix_length_and_dec(){max_length= (args[0]->max_length*120)/100+12;}
const char *func_name() const{return "compress";}
};
class Item_func_uncompress: public Item_str_func
{
String buffer;
public:
Item_func_uncompress(Item *a): Item_str_func(a){}
String *val_str(String *);
void fix_length_and_dec(){max_length= MAX_BLOB_WIDTH;}
const char *func_name() const{return "uncompress";}
};
#endif
/*
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:
return "sp_unknown";
}
}
};
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"; }
};
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"; }
};
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"; }
};
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; }
};
class Item_func_x: public Item_real_func
{
String value;
public:
Item_func_x(Item *a): Item_real_func(a) {}
double val();
const char *func_name() const { return "x"; }
};
class Item_func_y: public Item_real_func
{
String value;
public:
Item_func_y(Item *a): Item_real_func(a) {}
double val();
const char *func_name() const { return "y"; }
};
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; }
};
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 "numinteriorring"; }
void fix_length_and_dec() { max_length=10; }
};
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; }
};
class Item_func_area: public Item_real_func
{
String value;
public:
Item_func_area(Item *a): Item_real_func(a) {}
double val();
const char *func_name() const { return "area"; }
};
class Item_func_glength: public Item_real_func
{
String value;
public:
Item_func_glength(Item *a): Item_real_func(a) {}
double val();
const char *func_name() const { return "glength"; }
};
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; }
};

422
sql/item_strfunc.cc
View file

@ -2522,428 +2522,6 @@ null:
return 0;
}
/*******************************************************
General functions for spatial objects
********************************************************/
String *Item_func_geometry_from_text::val_str(String *str)
{
Geometry geom;
String arg_val;
String *wkt= args[0]->val_str(&arg_val);
GTextReadStream trs(wkt->ptr(), wkt->length());
uint32 srid;
if ((arg_count == 2) && !args[1]->null_value)
srid= args[1]->val_int();
else
srid= 0;
if (str->reserve(SRID_SIZE, 512))
return 0;
str->length(0);
str->q_append(srid);
if ((null_value=(args[0]->null_value || geom.create_from_wkt(&trs, str, 0))))
return 0;
return str;
}
void Item_func_geometry_from_text::fix_length_and_dec()
{
max_length=MAX_BLOB_WIDTH;
}
String *Item_func_geometry_from_wkb::val_str(String *str)
{
String arg_val;
String *wkb= args[0]->val_str(&arg_val);
Geometry geom;
uint32 srid;
if ((arg_count == 2) && !args[1]->null_value)
srid= args[1]->val_int();
else
srid= 0;
if (str->reserve(SRID_SIZE, 512))
return 0;
str->length(0);
str->q_append(srid);
if ((null_value= (args[0]->null_value ||
geom.create_from_wkb(wkb->ptr(), wkb->length()))))
return 0;
str->append(*wkb);
return str;
}
void Item_func_geometry_from_wkb::fix_length_and_dec()
{
max_length=MAX_BLOB_WIDTH;
}
String *Item_func_as_text::val_str(String *str)
{
String arg_val;
String *swkb= args[0]->val_str(&arg_val);
Geometry geom;
if ((null_value= (args[0]->null_value ||
geom.create_from_wkb(swkb->ptr() + SRID_SIZE,
swkb->length() - SRID_SIZE))))
return 0;
str->length(0);
if ((null_value= geom.as_wkt(str)))
return 0;
return str;
}
void Item_func_as_text::fix_length_and_dec()
{
max_length=MAX_BLOB_WIDTH;
}
String *Item_func_as_wkb::val_str(String *str)
{
String arg_val;
String *swkb= args[0]->val_str(&arg_val);
Geometry geom;
if ((null_value= (args[0]->null_value ||
geom.create_from_wkb(swkb->ptr() + SRID_SIZE,
swkb->length() - SRID_SIZE))))
return 0;
str->copy(swkb->ptr() + SRID_SIZE, swkb->length() - SRID_SIZE,
&my_charset_bin);
return str;
}
void Item_func_as_wkb::fix_length_and_dec()
{
max_length= MAX_BLOB_WIDTH;
}
String *Item_func_geometry_type::val_str(String *str)
{
String *swkb= args[0]->val_str(str);
Geometry geom;
if ((null_value= (args[0]->null_value ||
geom.create_from_wkb(swkb->ptr() + SRID_SIZE,
swkb->length() - SRID_SIZE))))
return 0;
str->copy(geom.get_class_info()->m_name,
strlen(geom.get_class_info()->m_name),
default_charset_info);
return str;
}
String *Item_func_envelope::val_str(String *str)
{
String arg_val;
String *swkb= args[0]->val_str(&arg_val);
Geometry geom;
if ((null_value= args[0]->null_value ||
geom.create_from_wkb(swkb->ptr() + SRID_SIZE,
swkb->length() - SRID_SIZE)))
return 0;
uint32 srid= uint4korr(swkb->ptr());
str->length(0);
if (str->reserve(SRID_SIZE, 512))
return 0;
str->q_append(srid);
return (null_value= geom.envelope(str)) ? 0 : str;
}
String *Item_func_centroid::val_str(String *str)
{
String arg_val;
String *swkb= args[0]->val_str(&arg_val);
Geometry geom;
if ((null_value= args[0]->null_value ||
geom.create_from_wkb(swkb->ptr() + SRID_SIZE,
swkb->length() - SRID_SIZE) ||
!GEOM_METHOD_PRESENT(geom, centroid)))
return 0;
if (str->reserve(SRID_SIZE, 512))
return 0;
str->length(0);
uint32 srid= uint4korr(swkb->ptr());
str->q_append(srid);
return (null_value= geom.centroid(str)) ? 0 : str;
}
/***********************************************
Spatial decomposition functions
***********************************************/
String *Item_func_spatial_decomp::val_str(String *str)
{
String arg_val;
String *swkb= args[0]->val_str(&arg_val);
Geometry geom;
if ((null_value= (args[0]->null_value ||
geom.create_from_wkb(swkb->ptr() + SRID_SIZE,
swkb->length() - SRID_SIZE))))
return 0;
null_value= 1;
if (str->reserve(SRID_SIZE, 512))
return 0;
str->length(0);
uint32 srid= uint4korr(swkb->ptr());
str->q_append(srid);
switch(decomp_func)
{
case SP_STARTPOINT:
if (!GEOM_METHOD_PRESENT(geom,start_point) || geom.start_point(str))
goto ret;
break;
case SP_ENDPOINT:
if (!GEOM_METHOD_PRESENT(geom,end_point) || geom.end_point(str))
goto ret;
break;
case SP_EXTERIORRING:
if (!GEOM_METHOD_PRESENT(geom,exterior_ring) || geom.exterior_ring(str))
goto ret;
break;
default:
goto ret;
}
null_value= 0;
ret:
return null_value ? 0 : str;
}
String *Item_func_spatial_decomp_n::val_str(String *str)
{
String arg_val;
String *swkb= args[0]->val_str(&arg_val);
long n= (long) args[1]->val_int();
Geometry geom;
if ((null_value= (args[0]->null_value || args[1]->null_value ||
geom.create_from_wkb(swkb->ptr() + SRID_SIZE,
swkb->length() - SRID_SIZE))))
return 0;
null_value= 1;
if (str->reserve(SRID_SIZE, 512))
return 0;
str->length(0);
uint32 srid= uint4korr(swkb->ptr());
str->q_append(srid);
switch(decomp_func_n)
{
case SP_POINTN:
if (!GEOM_METHOD_PRESENT(geom,point_n) || geom.point_n(n,str))
goto ret;
break;
case SP_GEOMETRYN:
if (!GEOM_METHOD_PRESENT(geom,geometry_n) || geom.geometry_n(n,str))
goto ret;
break;
case SP_INTERIORRINGN:
if (!GEOM_METHOD_PRESENT(geom,interior_ring_n) ||
geom.interior_ring_n(n,str))
goto ret;
break;
default:
goto ret;
}
null_value= 0;
ret:
return null_value ? 0 : str;
}
/***********************************************
Functions to concatinate various spatial objects
************************************************/
/*
* Concatinate doubles into Point
*/
String *Item_func_point::val_str(String *str)
{
double x= args[0]->val();
double y= args[1]->val();
if ( (null_value= (args[0]->null_value ||
args[1]->null_value ||
str->realloc(1 + 4 + 8 + 8))))
return 0;
str->length(0);
str->q_append((char)Geometry::wkbNDR);
str->q_append((uint32)Geometry::wkbPoint);
str->q_append(x);
str->q_append(y);
return str;
}
/*
Concatinates various items into various collections
with checkings for valid wkb type of items.
For example, MultiPoint can be a collection of Points only.
coll_type contains wkb type of target collection.
item_type contains a valid wkb type of items.
In the case when coll_type is wkbGeometryCollection,
we do not check wkb type of items, any is valid.
*/
String *Item_func_spatial_collection::val_str(String *str)
{
String arg_value;
uint i;
null_value= 1;
str->length(0);
if (str->reserve(1 + 4 + 4, 512))
return 0;
str->q_append((char) Geometry::wkbNDR);
str->q_append((uint32) coll_type);
str->q_append((uint32) arg_count);
for (i= 0; i < arg_count; ++i)
{
String *res= args[i]->val_str(&arg_value);
if (args[i]->null_value)
goto ret;
if ( coll_type == Geometry::wkbGeometryCollection )
{
/*
In the case of GeometryCollection we don't need
any checkings for item types, so just copy them
into target collection
*/
if ((null_value= str->reserve(res->length(), 512)))
goto ret;
str->q_append(res->ptr(), res->length());
}
else
{
enum Geometry::wkbType wkb_type;
uint32 len=res->length();
const char *data= res->ptr() + 1;
/*
In the case of named collection we must to
check that items are of specific type, let's
do this checking now
*/
if (len < 5)
goto ret;
wkb_type= (Geometry::wkbType) uint4korr(data);
data+= 4;
len-= 5;
if (wkb_type != item_type)
goto ret;
switch (coll_type) {
case Geometry::wkbMultiPoint:
case Geometry::wkbMultiLineString:
case Geometry::wkbMultiPolygon:
if (len < WKB_HEADER_SIZE)
goto ret;
data-= WKB_HEADER_SIZE;
len+= WKB_HEADER_SIZE;
if (str->reserve(len, 512))
goto ret;
str->q_append(data, len);
break;
case Geometry::wkbLineString:
if (str->reserve(POINT_DATA_SIZE, 512))
goto ret;
str->q_append(data, POINT_DATA_SIZE);
break;
case Geometry::wkbPolygon:
{
uint32 n_points;
double x1, y1, x2, y2;
if (len < 4 + 2 * POINT_DATA_SIZE)
goto ret;
uint32 llen= len;
const char *ldata= data;
n_points= uint4korr(data);
data+= 4;
float8get(x1, data);
data+= 8;
float8get(y1, data);
data+= 8;
data+= (n_points - 2) * POINT_DATA_SIZE;
float8get(x2, data);
float8get(y2, data + 8);
if ((x1 != x2) || (y1 != y2))
goto ret;
if (str->reserve(llen, 512))
goto ret;
str->q_append(ldata, llen);
}
break;
default:
goto ret;
}
}
}
if (str->length() > current_thd->variables.max_allowed_packet)
goto ret;
null_value = 0;
ret:
return null_value ? 0 : str;
}
#ifdef HAVE_COMPRESS
#include "../zlib/zlib.h"

239
sql/item_strfunc.h
View file

@ -628,242 +628,3 @@ public:
set_charset(default_charset());
};
};
/*******************************************************
Spatial functions
********************************************************/
#define SRID_SIZE sizeof(uint32)
class Item_func_geometry_from_text :public Item_str_func
{
public:
Item_func_geometry_from_text(Item *a) :Item_str_func(a) {}
Item_func_geometry_from_text(Item *a, Item *srid) :Item_str_func(a, srid) {}
const char *func_name() const { return "geometryfromtext"; }
String *val_str(String *);
void fix_length_and_dec();
};
class Item_func_geometry_from_wkb: public Item_str_func
{
public:
Item_func_geometry_from_wkb(Item *a) :Item_str_func(a) {}
Item_func_geometry_from_wkb(Item *a, Item *srid) :Item_str_func(a, srid) {}
const char *func_name() const { return "geometryfromwkb"; }
String *val_str(String *);
void fix_length_and_dec();
};
class Item_func_as_text :public Item_str_func
{
public:
Item_func_as_text(Item *a) :Item_str_func(a) {}
const char *func_name() const { return "astext"; }
String *val_str(String *);
void fix_length_and_dec();
};
class Item_func_as_wkb :public Item_str_func
{
public:
Item_func_as_wkb(Item *a) :Item_str_func(a) {}
const char *func_name() const { return "aswkb"; }
String *val_str(String *);
void fix_length_and_dec();
};
class Item_func_geometry_type :public Item_str_func
{
public:
Item_func_geometry_type(Item *a) :Item_str_func(a) {}
String *val_str(String *);
const char *func_name() const { return "geometrytype"; }
void fix_length_and_dec()
{
max_length=20; // "GeometryCollection" is the most long
};
};
class Item_func_centroid :public Item_str_func
{
public:
Item_func_centroid(Item *a) :Item_str_func(a) {}
const char *func_name() const { return "centroid"; }
String *val_str(String *);
void fix_length_and_dec(){max_length=MAX_BLOB_WIDTH;}
};
class Item_func_envelope :public Item_str_func
{
public:
Item_func_envelope(Item *a) :Item_str_func(a) {}
const char *func_name() const { return "envelope"; }
String *val_str(String *);
void fix_length_and_dec(){max_length=MAX_BLOB_WIDTH;}
};
class Item_func_point :public Item_str_func
{
public:
Item_func_point(Item *a, Item *b) :Item_str_func(a, b) {}
Item_func_point(Item *a, Item *b, Item *srid) :Item_str_func(a, b, srid) {}
const char *func_name() const { return "point"; }
String *val_str(String *);
void fix_length_and_dec(){max_length=MAX_BLOB_WIDTH;}
};
class Item_func_spatial_decomp :public Item_str_func
{
enum Functype decomp_func;
public:
Item_func_spatial_decomp(Item *a, Item_func::Functype ft) :
Item_str_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:
return "spatial_decomp_unknown";
}
}
String *val_str(String *);
void fix_length_and_dec(){max_length=MAX_BLOB_WIDTH;}
};
class Item_func_spatial_decomp_n :public Item_str_func
{
enum Functype decomp_func_n;
public:
Item_func_spatial_decomp_n(Item *a, Item *b, Item_func::Functype ft) :
Item_str_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:
return "spatial_decomp_n_unknown";
}
}
String *val_str(String *);
void fix_length_and_dec(){max_length=MAX_BLOB_WIDTH;}
};
class Item_func_spatial_collection :public Item_str_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_str_func(list)
{
coll_type=ct;
item_type=it;
}
String *val_str(String *);
void fix_length_and_dec(){max_length=MAX_BLOB_WIDTH;}
const char *func_name() const { return "multipoint"; }
};
#ifdef HAVE_COMPRESS
class Item_func_compress : public Item_str_func
{
String buffer;
public:
Item_func_compress(Item *a):Item_str_func(a){}
String *val_str(String *);
void fix_length_and_dec(){max_length= (args[0]->max_length*120)/100+12;}
const char *func_name() const{return "compress";}
};
class Item_func_uncompress : public Item_str_func
{
String buffer;
public:
Item_func_uncompress(Item *a):Item_str_func(a){}
String *val_str(String *);
void fix_length_and_dec(){max_length= MAX_BLOB_WIDTH;}
const char *func_name() const{return "uncompress";}
};
#endif
/*
class Item_func_multipoint :public Item_str_func
{
String tmp_value;
public:
Item_func_multipoint(List<Item> &list) :Item_str_func(list) {}
String *val_str(String *);
void fix_length_and_dec(){max_length=MAX_BLOB_WIDTH;}
const char *func_name() const { return "multipoint"; }
};
class Item_func_linestring :public Item_str_func
{
String tmp_value;
public:
Item_func_linestring(List<Item> &list) :Item_str_func(list) {}
String *val_str(String *);
void fix_length_and_dec(){max_length=MAX_BLOB_WIDTH;}
const char *func_name() const { return "linestring"; }
};
class Item_func_multilinestring :public Item_str_func
{
String tmp_value;
public:
Item_func_multilinestring(List<Item> &list) :Item_str_func(list) {}
String *val_str(String *);
void fix_length_and_dec(){max_length=MAX_BLOB_WIDTH;}
const char *func_name() const { return "multilinestring"; }
};
class Item_func_polygon :public Item_str_func
{
String tmp_value;
public:
Item_func_polygon(List<Item> &list) :Item_str_func(list) {}
String *val_str(String *);
void fix_length_and_dec(){max_length=MAX_BLOB_WIDTH;}
const char *func_name() const { return "polygon"; }
};
class Item_func_multipolygon :public Item_str_func
{
String tmp_value;
public:
Item_func_multipolygon(List<Item> &list) :Item_str_func(list) {}
String *val_str(String *);
void fix_length_and_dec(){max_length=MAX_BLOB_WIDTH;}
const char *func_name() const { return "multipolygon"; }
};
class Item_func_geometrycollection :public Item_str_func
{
String tmp_value;
public:
Item_func_geometrycollection(List<Item> &list) :Item_str_func(list) {}
String *val_str(String *);
void fix_length_and_dec(){max_length=MAX_BLOB_WIDTH;}
const char *func_name() const { return "geometrycollection"; }
};
*/