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rewrite Item_func_set_user_var ::val, ::val_str, ::val_int, ::update

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with less code duplication
This commit is contained in:
unknown 2003-09-30 12:32:48 -04:00
commit de6a1085eb
2 changed files with 51 additions and 89 deletions
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135
sql/item_func.cc
View file

@ -1899,35 +1899,46 @@ void Item_func_set_user_var::update_hash(void *ptr, uint length,
return;
}
double Item_func_set_user_var::native_val()
{
double value=args[0]->val();
update_hash((void*) &value,sizeof(value), REAL_RESULT);
return value;
}
longlong Item_func_set_user_var::native_val_int()
{
longlong value=args[0]->val_int();
update_hash((void*) &value,sizeof(longlong),INT_RESULT);
return value;
}
String *Item_func_set_user_var::native_val_str(String *str)
{
char buffer[MAX_FIELD_WIDTH];
String *res=args[0]->val_str(str);
if (!res) // Null value
update_hash((void*) 0,0,STRING_RESULT);
else
update_hash(res->c_ptr(),res->length()+1,STRING_RESULT);
return res;
}
String *Item_func_set_user_var::native_val_str()
{
char buffer[MAX_FIELD_WIDTH];
String tmp(buffer,sizeof(buffer));
return native_val_str(&tmp);
}
bool
Item_func_set_user_var::update()
{
DBUG_ENTER("Item_func_set_user_var::update");
switch (cached_result_type) {
case REAL_RESULT:
{
double value=args[0]->val();
update_hash((void*) &value,sizeof(value), REAL_RESULT);
break;
}
case INT_RESULT:
{
longlong value=args[0]->val_int();
update_hash((void*) &value,sizeof(longlong),INT_RESULT);
break;
}
case STRING_RESULT:
{
char buffer[MAX_FIELD_WIDTH];
String tmp(buffer,sizeof(buffer));
String *res=args[0]->val_str(&tmp);
if (!res) // Null value
update_hash((void*) 0,0,STRING_RESULT);
else
update_hash(res->c_ptr(),res->length()+1,STRING_RESULT);
break;
}
case REAL_RESULT: (void)native_val(); break;
case INT_RESULT: (void)native_val_int(); break;
case STRING_RESULT: (void)native_val_str(); break;
}
DBUG_RETURN(current_thd->fatal_error);
}
@ -1938,28 +1949,12 @@ Item_func_set_user_var::val()
{
DBUG_ENTER("Item_func_set_user_var::val");
switch (cached_result_type) {
case REAL_RESULT:
{
double value=args[0]->val();
update_hash((void*) &value,sizeof(value), REAL_RESULT);
return value;
}
case INT_RESULT:
{
longlong value=args[0]->val_int();
update_hash((void*) &value,sizeof(longlong),INT_RESULT);
return value;
}
case REAL_RESULT: return native_val(); break;
case INT_RESULT: return native_val_int(); break;
case STRING_RESULT:
{
char buffer[MAX_FIELD_WIDTH];
String tmp(buffer,sizeof(buffer));
String *res=args[0]->val_str(&tmp);
if (!res) // Null value
update_hash((void*) 0,0,STRING_RESULT);
else
update_hash(res->c_ptr(),res->length()+1,STRING_RESULT);
return atof(res->c_ptr());
String *res= native_val_str();
return !res ? 0 : atof(res->c_ptr());
}
}
DBUG_RETURN(args[0]->val());
@ -1970,28 +1965,12 @@ Item_func_set_user_var::val_int()
{
DBUG_ENTER("Item_func_set_user_var::val_int");
switch (cached_result_type) {
case REAL_RESULT:
{
double value=args[0]->val();
update_hash((void*) &value,sizeof(value), REAL_RESULT);
return (longlong)value;
}
case INT_RESULT:
{
longlong value=args[0]->val_int();
update_hash((void*) &value,sizeof(longlong),INT_RESULT);
return value;
}
case REAL_RESULT: return (longlong)native_val(); break;
case INT_RESULT: return native_val_int(); break;
case STRING_RESULT:
{
char buffer[MAX_FIELD_WIDTH];
String tmp(buffer,sizeof(buffer));
String *res=args[0]->val_str(&tmp);
if (!res) // Null value
update_hash((void*) 0,0,STRING_RESULT);
else
update_hash(res->c_ptr(),res->length()+1,STRING_RESULT);
return strtoull(res->c_ptr(),NULL,10);
String *res= native_val_str();
return !res ? 0 : strtoull(res->c_ptr(),NULL,10);
}
}
DBUG_RETURN(args[0]->val_int());
@ -2002,33 +1981,11 @@ Item_func_set_user_var::val_str(String *str)
{
DBUG_ENTER("Item_func_set_user_var::val_str");
switch (cached_result_type) {
case REAL_RESULT:
{
double value=args[0]->val();
update_hash((void*) &value,sizeof(value), REAL_RESULT);
str->set(value,decimals);
return str;
case REAL_RESULT: str->set(native_val(),decimals); break;
case INT_RESULT: str->set(native_val_int(),decimals); break;
case STRING_RESULT: str= native_val_str(str); break;
}
case INT_RESULT:
{
longlong value=args[0]->val_int();
update_hash((void*) &value,sizeof(longlong),INT_RESULT);
str->set(value,decimals);
return str;
}
case STRING_RESULT:
{
char buffer[MAX_FIELD_WIDTH];
String tmp(buffer,sizeof(buffer));
String *res=args[0]->val_str(&tmp);
if (!res) // Null value
update_hash((void*) 0,0,STRING_RESULT);
else
update_hash(res->c_ptr(),res->length()+1,STRING_RESULT);
return res;
}
}
DBUG_RETURN(args[0]->val_str(str));
DBUG_RETURN(str);
}

5
sql/item_func.h
View file

@ -889,6 +889,11 @@ class Item_func_set_user_var :public Item_func
LEX_STRING name;
user_var_entry *entry;
double native_val();
longlong native_val_int();
String *native_val_str(String *str);
String *native_val_str();
public:
Item_func_set_user_var(LEX_STRING a,Item *b): Item_func(b), name(a) {}
double val();