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Fixed envelope() function.

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This commit is contained in:
ram@mysql.r18.ru 2003-04-04 14:09:08 +05:00
parent 1c9e9bb613
commit 7a856411ec
1 changed files with 9 additions and 8 deletions
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17
sql/item_strfunc.cc
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@ -2624,20 +2624,21 @@ String *Item_func_geometry_type::val_str(String *str)
String *Item_func_envelope::val_str(String *str)
{
String *res= args[0]->val_str(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(res->ptr() + SRID_SIZE,
res->length() - SRID_SIZE)))
geom.create_from_wkb(swkb->ptr() + SRID_SIZE,
swkb->length() - SRID_SIZE)))
return 0;
uint32 srid= uint4korr(res->ptr());
if (res->reserve(SRID_SIZE, 512))
uint32 srid= uint4korr(swkb->ptr());
str->length(0);
if (str->reserve(SRID_SIZE, 512))
return 0;
res->length(0);
res->q_append(srid);
return (null_value= geom.envelope(res)) ? 0 : res;
str->q_append(srid);
return (null_value= geom.envelope(str)) ? 0 : str;
}