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/*
Copyright (c) 2002-2007 MySQL AB, 2009 Sun Microsystems, Inc.
Use is subject to license terms.
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; version 2 of the License.
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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifdef USE_PRAGMA_INTERFACE
#pragma interface /* gcc class implementation */
#endif
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 DBUG_OFF
enum enum_field_types *field_types;
#endif
uint field_count;
#ifndef EMBEDDED_LIBRARY
bool net_store_data(const uchar *from, size_t length);
#else
virtual bool net_store_data(const uchar *from, size_t length);
char **next_field;
MYSQL_FIELD *next_mysql_field;
MEM_ROOT *alloc;
#endif
bool store_string_aux(const char *from, size_t length,
CHARSET_INFO *fromcs, CHARSET_INFO *tocs);
public:
Protocol() {}
Protocol(THD *thd_arg) { init(thd_arg); }
virtual ~Protocol() {}
void init(THD* thd_arg);
enum { SEND_NUM_ROWS= 1, SEND_DEFAULTS= 2, SEND_EOF= 4 };
virtual bool send_fields(List<Item> *list, uint flags);
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(int from)
{ return store_long((longlong) from); }
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 bool flush();
virtual void end_partial_result_set(THD *thd);
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_decimal(const my_decimal *)=0;
virtual bool store(const char *from, size_t length, CHARSET_INFO *cs)=0;
virtual bool store(const char *from, size_t 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(MYSQL_TIME *time)=0;
virtual bool store_date(MYSQL_TIME *time)=0;
virtual bool store_time(MYSQL_TIME *time)=0;
virtual bool store(Field *field)=0;
#ifdef EMBEDDED_LIBRARY
int begin_dataset();
virtual void remove_last_row() {}
#else
void remove_last_row() {}
#endif
enum enum_protocol_type
{
PROTOCOL_TEXT= 0, PROTOCOL_BINARY= 1
/*
before adding here or change the values, consider that it is cast to a
bit in sql_cache.cc.
*/
};
virtual enum enum_protocol_type type()= 0;
};
/** Class used for the old (MySQL 4.0 protocol). */
class Protocol_text :public Protocol
{
public:
Protocol_text() {}
Protocol_text(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_decimal(const my_decimal *);
virtual bool store(const char *from, size_t length, CHARSET_INFO *cs);
virtual bool store(const char *from, size_t length,
CHARSET_INFO *fromcs, CHARSET_INFO *tocs);
virtual bool store(MYSQL_TIME *time);
virtual bool store_date(MYSQL_TIME *time);
virtual bool store_time(MYSQL_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);
#ifdef EMBEDDED_LIBRARY
void remove_last_row();
#endif
virtual enum enum_protocol_type type() { return PROTOCOL_TEXT; };
};
class Protocol_binary :public Protocol
{
private:
uint bit_fields;
public:
Protocol_binary() {}
Protocol_binary(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 uchar *from, size_t 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_decimal(const my_decimal *);
virtual bool store(const char *from, size_t length, CHARSET_INFO *cs);
virtual bool store(const char *from, size_t length,
CHARSET_INFO *fromcs, CHARSET_INFO *tocs);
virtual bool store(MYSQL_TIME *time);
virtual bool store_date(MYSQL_TIME *time);
virtual bool store_time(MYSQL_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);
virtual enum enum_protocol_type type() { return PROTOCOL_BINARY; };
};
void send_warning(THD *thd, uint sql_errno, const char *err=0);
bool net_send_error(THD *thd, uint sql_errno=0, const char *err=0);
void net_end_statement(THD *thd);
bool send_old_password_request(THD *thd);
uchar *net_store_data(uchar *to,const uchar *from, size_t length);
uchar *net_store_data(uchar *to,int32 from);
uchar *net_store_data(uchar *to,longlong from);
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