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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 */
#ifdef __GNUC__
#pragma interface /* gcc class implementation */
#endif
#define PACKET_BUFFET_EXTRA_ALLOC 1024
class i_string;
class THD;
typedef struct st_mysql_field MYSQL_FIELD;
typedef struct st_mysql_rows MYSQL_ROWS;
class Protocol
{
protected:
THD *thd;
String *packet;
String *convert;
uint field_pos;
#ifndef DEBUG_OFF
enum enum_field_types *field_types;
#endif
uint field_count;
bool net_store_data(const char *from, uint length);
#ifdef EMBEDDED_LIBRARY
char **next_field;
MYSQL_FIELD *next_mysql_field;
MEM_ROOT *alloc;
#endif
bool store_string_aux(const char *from, uint length,
CHARSET_INFO *fromcs, CHARSET_INFO *tocs);
public:
Protocol() {}
Protocol(THD *thd_arg) { init(thd_arg); }
virtual ~Protocol() {}
void init(THD* thd_arg);
virtual bool send_fields(List<Item> *list, uint flag);
bool send_records_num(List<Item> *list, ulonglong records);
bool store(I_List<i_string> *str_list);
bool store(const char *from, CHARSET_INFO *cs);
String *storage_packet() { return packet; }
inline void free() { packet->free(); }
virtual bool write();
inline bool store(uint32 from)
{ return store_long((longlong) from); }
inline bool store(longlong from)
{ return store_longlong((longlong) from, 0); }
inline bool store(ulonglong from)
{ return store_longlong((longlong) from, 1); }
inline bool store(String *str)
{ return store((char*) str->ptr(), str->length(), str->charset()); }
virtual bool prepare_for_send(List<Item> *item_list)
{
field_count=item_list->elements;
return 0;
}
virtual void prepare_for_resend()=0;
virtual bool store_null()=0;
virtual bool store_tiny(longlong from)=0;
virtual bool store_short(longlong from)=0;
virtual bool store_long(longlong from)=0;
virtual bool store_longlong(longlong from, bool unsigned_flag)=0;
virtual bool store(const char *from, uint length, CHARSET_INFO *cs)=0;
virtual bool store(const char *from, uint length,
CHARSET_INFO *fromcs, CHARSET_INFO *tocs)=0;
virtual bool store(float from, uint32 decimals, String *buffer)=0;
virtual bool store(double from, uint32 decimals, String *buffer)=0;
virtual bool store(TIME *time)=0;
virtual bool store_date(TIME *time)=0;
virtual bool store_time(TIME *time)=0;
virtual bool store(Field *field)=0;
};
/* Class used for the old (MySQL 4.0 protocol) */
class Protocol_simple :public Protocol
{
public:
Protocol_simple() {}
Protocol_simple(THD *thd_arg) :Protocol(thd_arg) {}
virtual void prepare_for_resend();
virtual bool store_null();
virtual bool store_tiny(longlong from);
virtual bool store_short(longlong from);
virtual bool store_long(longlong from);
virtual bool store_longlong(longlong from, bool unsigned_flag);
virtual bool store(const char *from, uint length, CHARSET_INFO *cs);
virtual bool store(const char *from, uint length,
CHARSET_INFO *fromcs, CHARSET_INFO *tocs);
virtual bool store(TIME *time);
virtual bool store_date(TIME *time);
virtual bool store_time(TIME *time);
virtual bool store(float nr, uint32 decimals, String *buffer);
virtual bool store(double from, uint32 decimals, String *buffer);
virtual bool store(Field *field);
};
class Protocol_prep :public Protocol
{
private:
uint bit_fields;
public:
Protocol_prep() {}
Protocol_prep(THD *thd_arg) :Protocol(thd_arg) {}
virtual bool prepare_for_send(List<Item> *item_list);
virtual void prepare_for_resend();
#ifdef EMBEDDED_LIBRARY
virtual bool write();
bool net_store_data(const char *from, uint length);
#endif
virtual bool store_null();
virtual bool store_tiny(longlong from);
virtual bool store_short(longlong from);
virtual bool store_long(longlong from);
virtual bool store_longlong(longlong from, bool unsigned_flag);
virtual bool store(const char *from,uint length, CHARSET_INFO *cs);
virtual bool store(const char *from, uint length,
CHARSET_INFO *fromcs, CHARSET_INFO *tocs);
virtual bool store(TIME *time);
virtual bool store_date(TIME *time);
virtual bool store_time(TIME *time);
virtual bool store(float nr, uint32 decimals, String *buffer);
virtual bool store(double from, uint32 decimals, String *buffer);
virtual bool store(Field *field);
};
class Protocol_cursor :public Protocol_simple
{
public:
MEM_ROOT *alloc;
MYSQL_FIELD *fields;
MYSQL_ROWS *data;
MYSQL_ROWS **prev_record;
ulong row_count;
Protocol_cursor() {}
Protocol_cursor(THD *thd_arg, MEM_ROOT *ini_alloc) :Protocol_simple(thd_arg), alloc(ini_alloc) {}
bool prepare_for_send(List<Item> *item_list)
{
row_count= 0;
fields= NULL;
data= NULL;
prev_record= &data;
return Protocol_simple::prepare_for_send(item_list);
}
bool send_fields(List<Item> *list, uint flag);
bool write();
uint get_field_count() { return field_count; }
};
void send_warning(THD *thd, uint sql_errno, const char *err=0);
void net_printf(THD *thd,uint sql_errno, ...);
void send_ok(THD *thd, ha_rows affected_rows=0L, ulonglong id=0L,
const char *info=0);
void send_eof(THD *thd, bool no_flush=0);
bool send_old_password_request(THD *thd);
char *net_store_length(char *packet,uint length);
char *net_store_data(char *to,const char *from, uint length);
char *net_store_data(char *to,int32 from);
char *net_store_data(char *to,longlong from);
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