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/* 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 */
/* When using sql procedures */
#ifdef __GNUC__
#pragma interface /* gcc class implementation */
#endif
#define PROC_NO_SORT 1 /* Bits in flags */
#define PROC_GROUP 2 /* proc must have group */
/* Procedure items used by procedures to store values for send_fields */
class Item_proc :public Item
{
public:
Item_proc(const char *name_par): Item()
{
this->name=(char*) name_par;
}
enum Type type() const { return Item::PROC_ITEM; }
virtual void set(double nr)=0;
virtual void set(const char *str,uint length)=0;
virtual void set(longlong nr)=0;
virtual enum_field_types field_type() const=0;
void set(const char *str) { set(str,(uint) strlen(str)); }
void make_field(Send_field *tmp_field)
{
init_make_field(tmp_field,field_type());
}
};
class Item_proc_real :public Item_proc
{
double value;
public:
Item_proc_real(const char *name_par,uint dec) : Item_proc(name_par)
{
decimals=dec; max_length=float_length(dec);
}
enum Item_result result_type () const { return REAL_RESULT; }
enum_field_types field_type() const { return FIELD_TYPE_DOUBLE; }
void set(double nr) { value=nr; }
void set(longlong nr) { value=(double) nr; }
void set(const char *str,uint length __attribute__((unused)))
{ value=atof(str); }
double val() { return value; }
longlong val_int() { return (longlong) value; }
String *val_str(String *s) { s->set(value,decimals); return s; }
};
class Item_proc_int :public Item_proc
{
longlong value;
public:
Item_proc_int(const char *name_par) :Item_proc(name_par)
{ max_length=11; }
enum Item_result result_type () const { return INT_RESULT; }
enum_field_types field_type() const { return FIELD_TYPE_LONG; }
void set(double nr) { value=(longlong) nr; }
void set(longlong nr) { value=nr; }
void set(const char *str,uint length __attribute__((unused)))
{ value=strtoll(str,NULL,10); }
double val() { return (double) value; }
longlong val_int() { return value; }
String *val_str(String *s) { s->set(value); return s; }
};
class Item_proc_string :public Item_proc
{
public:
Item_proc_string(const char *name_par,uint length) :Item_proc(name_par)
{ this->max_length=length; }
enum Item_result result_type () const { return STRING_RESULT; }
enum_field_types field_type() const { return FIELD_TYPE_STRING; }
void set(double nr) { str_value.set(nr); }
void set(longlong nr) { str_value.set(nr); }
void set(const char *str, uint length) { str_value.copy(str,length); }
double val() { return atof(str_value.ptr()); }
longlong val_int() { return strtoll(str_value.ptr(),NULL,10); }
String *val_str(String*)
{
return null_value ? (String*) 0 : (String*) &str_value;
}
};
/* The procedure class definitions */
class Procedure {
protected:
List<Item> *fields;
select_result *result;
public:
const uint flags;
ORDER *group,*param_fields;
Procedure(select_result *res,uint flags_par) :result(res),flags(flags_par),
group(0),param_fields(0) {}
virtual ~Procedure() {group=param_fields=0; fields=0; }
virtual void add(void)=0;
virtual void end_group(void)=0;
virtual int send_row(List<Item> &fields)=0;
virtual bool change_columns(List<Item> &fields)=0;
virtual void update_refs(void) {}
virtual bool end_of_records() { return 0; }
};
Procedure *setup_procedure(THD *thd,ORDER *proc_param,select_result *result,
List<Item> &field_list,int *error);
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