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212 lines
7.3 KiB
C++
212 lines
7.3 KiB
C++
#ifndef PROTOCOL_INCLUDED
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#define PROTOCOL_INCLUDED
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/* Copyright (c) 2002, 2010, Oracle and/or its affiliates. All rights reserved.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; version 2 of the License.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */
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#ifdef USE_PRAGMA_INTERFACE
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#pragma interface /* gcc class implementation */
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#endif
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#include "sql_error.h"
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#include "my_decimal.h" /* my_decimal */
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class i_string;
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class Field;
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class THD;
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class Item_param;
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typedef struct st_mysql_field MYSQL_FIELD;
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typedef struct st_mysql_rows MYSQL_ROWS;
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class Protocol
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{
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protected:
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THD *thd;
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String *packet;
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String *convert;
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uint field_pos;
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#ifndef DBUG_OFF
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enum enum_field_types *field_types;
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#endif
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uint field_count;
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#ifndef EMBEDDED_LIBRARY
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bool net_store_data(const uchar *from, size_t length);
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#else
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virtual bool net_store_data(const uchar *from, size_t length);
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char **next_field;
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MYSQL_FIELD *next_mysql_field;
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MEM_ROOT *alloc;
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#endif
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bool net_store_data(const uchar *from, size_t length,
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CHARSET_INFO *fromcs, CHARSET_INFO *tocs);
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bool store_string_aux(const char *from, size_t length,
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CHARSET_INFO *fromcs, CHARSET_INFO *tocs);
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virtual bool send_ok(uint server_status, uint statement_warn_count,
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ulonglong affected_rows, ulonglong last_insert_id,
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const char *message);
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virtual bool send_eof(uint server_status, uint statement_warn_count);
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virtual bool send_error(uint sql_errno, const char *err_msg,
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const char *sql_state);
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public:
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Protocol() {}
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Protocol(THD *thd_arg) { init(thd_arg); }
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virtual ~Protocol() {}
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void init(THD* thd_arg);
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enum { SEND_NUM_ROWS= 1, SEND_DEFAULTS= 2, SEND_EOF= 4 };
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virtual bool send_result_set_metadata(List<Item> *list, uint flags);
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bool send_result_set_row(List<Item> *row_items);
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bool store(I_List<i_string> *str_list);
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bool store(const char *from, CHARSET_INFO *cs);
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String *storage_packet() { return packet; }
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inline void free() { packet->free(); }
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virtual bool write();
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inline bool store(int from)
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{ return store_long((longlong) from); }
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inline bool store(uint32 from)
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{ return store_long((longlong) from); }
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inline bool store(longlong from)
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{ return store_longlong((longlong) from, 0); }
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inline bool store(ulonglong from)
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{ return store_longlong((longlong) from, 1); }
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inline bool store(String *str)
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{ return store((char*) str->ptr(), str->length(), str->charset()); }
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virtual bool prepare_for_send(uint num_columns)
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{
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field_count= num_columns;
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return 0;
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}
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virtual bool flush();
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virtual void end_partial_result_set(THD *thd);
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virtual void prepare_for_resend()=0;
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virtual bool store_null()=0;
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virtual bool store_tiny(longlong from)=0;
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virtual bool store_short(longlong from)=0;
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virtual bool store_long(longlong from)=0;
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virtual bool store_longlong(longlong from, bool unsigned_flag)=0;
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virtual bool store_decimal(const my_decimal *)=0;
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virtual bool store(const char *from, size_t length, CHARSET_INFO *cs)=0;
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virtual bool store(const char *from, size_t length,
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CHARSET_INFO *fromcs, CHARSET_INFO *tocs)=0;
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virtual bool store(float from, uint32 decimals, String *buffer)=0;
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virtual bool store(double from, uint32 decimals, String *buffer)=0;
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virtual bool store(MYSQL_TIME *time, int decimals)=0;
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virtual bool store_date(MYSQL_TIME *time)=0;
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virtual bool store_time(MYSQL_TIME *time, int decimals)=0;
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virtual bool store(Field *field)=0;
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virtual bool send_out_parameters(List<Item_param> *sp_params)=0;
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#ifdef EMBEDDED_LIBRARY
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int begin_dataset();
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virtual void remove_last_row() {}
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#else
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void remove_last_row() {}
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#endif
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enum enum_protocol_type
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{
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/*
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Before adding a new type, please make sure
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there is enough storage for it in Query_cache_query_flags.
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*/
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PROTOCOL_TEXT= 0, PROTOCOL_BINARY= 1, PROTOCOL_LOCAL= 2
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};
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virtual enum enum_protocol_type type()= 0;
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void end_statement();
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};
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/** Class used for the old (MySQL 4.0 protocol). */
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class Protocol_text :public Protocol
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{
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public:
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Protocol_text() {}
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Protocol_text(THD *thd_arg) :Protocol(thd_arg) {}
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virtual void prepare_for_resend();
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virtual bool store_null();
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virtual bool store_tiny(longlong from);
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virtual bool store_short(longlong from);
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virtual bool store_long(longlong from);
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virtual bool store_longlong(longlong from, bool unsigned_flag);
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virtual bool store_decimal(const my_decimal *);
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virtual bool store(const char *from, size_t length, CHARSET_INFO *cs);
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virtual bool store(const char *from, size_t length,
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CHARSET_INFO *fromcs, CHARSET_INFO *tocs);
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virtual bool store(MYSQL_TIME *time, int decimals);
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virtual bool store_date(MYSQL_TIME *time);
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virtual bool store_time(MYSQL_TIME *time, int decimals);
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virtual bool store(float nr, uint32 decimals, String *buffer);
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virtual bool store(double from, uint32 decimals, String *buffer);
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virtual bool store(Field *field);
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virtual bool send_out_parameters(List<Item_param> *sp_params);
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#ifdef EMBEDDED_LIBRARY
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void remove_last_row();
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#endif
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virtual enum enum_protocol_type type() { return PROTOCOL_TEXT; };
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};
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class Protocol_binary :public Protocol
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{
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private:
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uint bit_fields;
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public:
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Protocol_binary() {}
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Protocol_binary(THD *thd_arg) :Protocol(thd_arg) {}
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virtual bool prepare_for_send(uint num_columns);
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virtual void prepare_for_resend();
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#ifdef EMBEDDED_LIBRARY
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virtual bool write();
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bool net_store_data(const uchar *from, size_t length);
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#endif
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virtual bool store_null();
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virtual bool store_tiny(longlong from);
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virtual bool store_short(longlong from);
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virtual bool store_long(longlong from);
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virtual bool store_longlong(longlong from, bool unsigned_flag);
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virtual bool store_decimal(const my_decimal *);
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virtual bool store(const char *from, size_t length, CHARSET_INFO *cs);
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virtual bool store(const char *from, size_t length,
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CHARSET_INFO *fromcs, CHARSET_INFO *tocs);
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virtual bool store(MYSQL_TIME *time, int decimals);
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virtual bool store_date(MYSQL_TIME *time);
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virtual bool store_time(MYSQL_TIME *time, int decimals);
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virtual bool store(float nr, uint32 decimals, String *buffer);
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virtual bool store(double from, uint32 decimals, String *buffer);
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virtual bool store(Field *field);
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virtual bool send_out_parameters(List<Item_param> *sp_params);
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virtual enum enum_protocol_type type() { return PROTOCOL_BINARY; };
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};
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void send_warning(THD *thd, uint sql_errno, const char *err=0);
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bool net_send_error(THD *thd, uint sql_errno, const char *err,
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const char* sqlstate);
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void net_send_progress_packet(THD *thd);
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uchar *net_store_data(uchar *to,const uchar *from, size_t length);
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uchar *net_store_data(uchar *to,int32 from);
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uchar *net_store_data(uchar *to,longlong from);
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#endif /* PROTOCOL_INCLUDED */
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