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GEOMETRYCOLLECTION EMPTY handling fixed.

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The get_mbr() method shouldn't return the error, rather an invalid MBR
          in this case.
This commit is contained in:
Alexey Botchkov 2013-03-26 21:47:06 +04:00
parent 51a7074864
commit 045c498691
3 changed files with 24 additions and 12 deletions
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12
sql/item_geofunc.cc
View file

@ -559,8 +559,8 @@ longlong Item_func_spatial_mbr_rel::val_int()
args[1]->null_value ||
!(g1= Geometry::construct(&buffer1, res1->ptr(), res1->length())) ||
!(g2= Geometry::construct(&buffer2, res2->ptr(), res2->length())) ||
g1->get_mbr(&mbr1, &dummy) ||
g2->get_mbr(&mbr2, &dummy))))
g1->get_mbr(&mbr1, &dummy) || !mbr1.valid() ||
g2->get_mbr(&mbr2, &dummy) || !mbr2.valid())))
return 0;
switch (spatial_rel) {
@ -686,8 +686,8 @@ longlong Item_func_spatial_rel::val_int()
(args[0]->null_value || args[1]->null_value ||
!(g1= Geometry::construct(&buffer1, res1->ptr(), res1->length())) ||
!(g2= Geometry::construct(&buffer2, res2->ptr(), res2->length())) ||
g1->get_mbr(&mbr1, &c_end) ||
g2->get_mbr(&mbr2, &c_end))))
g1->get_mbr(&mbr1, &c_end) || !mbr1.valid() ||
g2->get_mbr(&mbr2, &c_end) || !mbr2.valid())))
goto exit;
umbr= mbr1;
@ -824,8 +824,8 @@ String *Item_func_spatial_operation::val_str(String *str_value)
(args[0]->null_value || args[1]->null_value ||
!(g1= Geometry::construct(&buffer1, res1->ptr(), res1->length())) ||
!(g2= Geometry::construct(&buffer2, res2->ptr(), res2->length())) ||
g1->get_mbr(&mbr1, &c_end) ||
g2->get_mbr(&mbr2, &c_end))))
g1->get_mbr(&mbr1, &c_end) || !mbr1.valid() ||
g2->get_mbr(&mbr2, &c_end) || !mbr2.valid())))
{
str_value= 0;
goto exit;

21
sql/spatial.cc
View file

@ -308,6 +308,9 @@ bool Geometry::envelope(String *result) const
const char *end;
if (get_mbr(&mbr, &end))
return 1;
if (!mbr.valid())
{
/* Empty geometry */
if (result->reserve(1 + 4*2))
@ -2322,7 +2325,7 @@ bool Gis_geometry_collection::get_mbr(MBR *mbr, const char **end) const
n_objects= uint4korr(data);
data+= 4;
if (n_objects == 0)
return 1;
goto exit;
while (n_objects--)
{
@ -2339,6 +2342,7 @@ bool Gis_geometry_collection::get_mbr(MBR *mbr, const char **end) const
if (geom->get_mbr(mbr, &data))
return 1;
}
exit:
*end= data;
return 0;
}
@ -2356,10 +2360,11 @@ int Gis_geometry_collection::area(double *ar, const char **end) const
return 1;
n_objects= uint4korr(data);
data+= 4;
if (n_objects == 0)
return 1;
result= 0.0;
if (n_objects == 0)
goto exit;
while (n_objects--)
{
uint32 wkb_type;
@ -2376,6 +2381,7 @@ int Gis_geometry_collection::area(double *ar, const char **end) const
return 1;
result+= *ar;
}
exit:
*end= data;
*ar= result;
return 0;
@ -2394,10 +2400,11 @@ int Gis_geometry_collection::geom_length(double *len, const char **end) const
return 1;
n_objects= uint4korr(data);
data+= 4;
if (n_objects == 0)
return 1;
result= 0.0;
if (n_objects == 0)
goto exit;
while (n_objects--)
{
uint32 wkb_type;
@ -2414,6 +2421,8 @@ int Gis_geometry_collection::geom_length(double *len, const char **end) const
return 1;
result+= *len;
}
exit:
*end= data;
*len= result;
return 0;

3
sql/spatial.h
View file

@ -199,6 +199,9 @@ struct MBR
return (d == intersection.dimension());
}
int valid() const
{ return xmin <= xmax && ymin <= ymax; }
};