865 lines
33 KiB
C
865 lines
33 KiB
C
/* Copyright (C) 2000-2003 MySQL AB
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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; either version 2 of the License, or
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(at your option) any later version.
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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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
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/*
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This file defines the client API to MySQL and also the ABI of the
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dynamically linked libmysqlclient.
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The ABI should never be changed in a released product of MySQL
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thus you need to take great care when changing the file. In case
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the file is changed so the ABI is broken, you must also
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update the SHAREDLIB_MAJOR_VERSION in configure.in .
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*/
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#ifndef _mysql_h
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#define _mysql_h
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#ifdef __CYGWIN__ /* CYGWIN implements a UNIX API */
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#undef WIN
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#undef _WIN
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#undef _WIN32
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#undef _WIN64
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#undef __WIN__
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#endif
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#ifdef __cplusplus
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extern "C" {
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#endif
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#ifndef _global_h /* If not standard header */
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#include <sys/types.h>
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#ifdef __LCC__
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#include <winsock.h> /* For windows */
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#endif
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typedef char my_bool;
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#if (defined(_WIN32) || defined(_WIN64)) && !defined(__WIN__)
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#define __WIN__
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#endif
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#if !defined(__WIN__)
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#define STDCALL
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#else
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#define STDCALL __stdcall
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#endif
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typedef char * gptr;
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#ifndef my_socket_defined
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#ifdef __WIN__
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#define my_socket SOCKET
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#else
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typedef int my_socket;
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#endif /* __WIN__ */
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#endif /* my_socket_defined */
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#endif /* _global_h */
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#include "mysql_com.h"
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#include "mysql_time.h"
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#include "mysql_version.h"
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#include "typelib.h"
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#include "my_list.h" /* for LISTs used in 'MYSQL' and 'MYSQL_STMT' */
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extern unsigned int mysql_port;
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extern char *mysql_unix_port;
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#define CLIENT_NET_READ_TIMEOUT 365*24*3600 /* Timeout on read */
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#define CLIENT_NET_WRITE_TIMEOUT 365*24*3600 /* Timeout on write */
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#ifdef __NETWARE__
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#pragma pack(push, 8) /* 8 byte alignment */
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#endif
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#define IS_PRI_KEY(n) ((n) & PRI_KEY_FLAG)
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#define IS_NOT_NULL(n) ((n) & NOT_NULL_FLAG)
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#define IS_BLOB(n) ((n) & BLOB_FLAG)
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#define IS_NUM(t) ((t) <= FIELD_TYPE_INT24 || (t) == FIELD_TYPE_YEAR || (t) == FIELD_TYPE_NEWDECIMAL)
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#define IS_NUM_FIELD(f) ((f)->flags & NUM_FLAG)
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#define INTERNAL_NUM_FIELD(f) (((f)->type <= FIELD_TYPE_INT24 && ((f)->type != FIELD_TYPE_TIMESTAMP || (f)->length == 14 || (f)->length == 8)) || (f)->type == FIELD_TYPE_YEAR)
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typedef struct st_mysql_field {
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char *name; /* Name of column */
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char *org_name; /* Original column name, if an alias */
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char *table; /* Table of column if column was a field */
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char *org_table; /* Org table name, if table was an alias */
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char *db; /* Database for table */
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char *catalog; /* Catalog for table */
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char *def; /* Default value (set by mysql_list_fields) */
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unsigned long length; /* Width of column (create length) */
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unsigned long max_length; /* Max width for selected set */
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unsigned int name_length;
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unsigned int org_name_length;
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unsigned int table_length;
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unsigned int org_table_length;
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unsigned int db_length;
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unsigned int catalog_length;
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unsigned int def_length;
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unsigned int flags; /* Div flags */
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unsigned int decimals; /* Number of decimals in field */
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unsigned int charsetnr; /* Character set */
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enum enum_field_types type; /* Type of field. See mysql_com.h for types */
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} MYSQL_FIELD;
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typedef char **MYSQL_ROW; /* return data as array of strings */
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typedef unsigned int MYSQL_FIELD_OFFSET; /* offset to current field */
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#ifndef _global_h
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#if defined(NO_CLIENT_LONG_LONG)
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typedef unsigned long my_ulonglong;
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#elif defined (__WIN__)
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typedef unsigned __int64 my_ulonglong;
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#else
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typedef unsigned long long my_ulonglong;
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#endif
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#endif
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#define MYSQL_COUNT_ERROR (~(my_ulonglong) 0)
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/* backward compatibility define - to be removed eventually */
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#define ER_WARN_DATA_TRUNCATED WARN_DATA_TRUNCATED
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typedef struct st_mysql_rows {
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struct st_mysql_rows *next; /* list of rows */
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MYSQL_ROW data;
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unsigned long length;
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} MYSQL_ROWS;
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typedef MYSQL_ROWS *MYSQL_ROW_OFFSET; /* offset to current row */
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#include "my_alloc.h"
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typedef struct embedded_query_result EMBEDDED_QUERY_RESULT;
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typedef struct st_mysql_data {
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my_ulonglong rows;
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unsigned int fields;
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MYSQL_ROWS *data;
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MEM_ROOT alloc;
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/* extra info for embedded library */
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struct embedded_query_result *embedded_info;
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} MYSQL_DATA;
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enum mysql_option
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{
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MYSQL_OPT_CONNECT_TIMEOUT, MYSQL_OPT_COMPRESS, MYSQL_OPT_NAMED_PIPE,
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MYSQL_INIT_COMMAND, MYSQL_READ_DEFAULT_FILE, MYSQL_READ_DEFAULT_GROUP,
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MYSQL_SET_CHARSET_DIR, MYSQL_SET_CHARSET_NAME, MYSQL_OPT_LOCAL_INFILE,
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MYSQL_OPT_PROTOCOL, MYSQL_SHARED_MEMORY_BASE_NAME, MYSQL_OPT_READ_TIMEOUT,
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MYSQL_OPT_WRITE_TIMEOUT, MYSQL_OPT_USE_RESULT,
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MYSQL_OPT_USE_REMOTE_CONNECTION, MYSQL_OPT_USE_EMBEDDED_CONNECTION,
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MYSQL_OPT_GUESS_CONNECTION, MYSQL_SET_CLIENT_IP, MYSQL_SECURE_AUTH,
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MYSQL_REPORT_DATA_TRUNCATION, MYSQL_OPT_RECONNECT,
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MYSQL_OPT_SSL_VERIFY_SERVER_CERT
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};
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struct st_mysql_options {
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unsigned int connect_timeout, read_timeout, write_timeout;
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unsigned int port, protocol;
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unsigned long client_flag;
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char *host,*user,*password,*unix_socket,*db;
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struct st_dynamic_array *init_commands;
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char *my_cnf_file,*my_cnf_group, *charset_dir, *charset_name;
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char *ssl_key; /* PEM key file */
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char *ssl_cert; /* PEM cert file */
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char *ssl_ca; /* PEM CA file */
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char *ssl_capath; /* PEM directory of CA-s? */
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char *ssl_cipher; /* cipher to use */
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char *shared_memory_base_name;
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unsigned long max_allowed_packet;
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my_bool use_ssl; /* if to use SSL or not */
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my_bool compress,named_pipe;
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/*
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On connect, find out the replication role of the server, and
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establish connections to all the peers
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*/
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my_bool rpl_probe;
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/*
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Each call to mysql_real_query() will parse it to tell if it is a read
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or a write, and direct it to the slave or the master
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*/
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my_bool rpl_parse;
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/*
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If set, never read from a master, only from slave, when doing
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a read that is replication-aware
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*/
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my_bool no_master_reads;
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#if !defined(CHECK_EMBEDDED_DIFFERENCES) || defined(EMBEDDED_LIBRARY)
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my_bool separate_thread;
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#endif
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enum mysql_option methods_to_use;
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char *client_ip;
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/* Refuse client connecting to server if it uses old (pre-4.1.1) protocol */
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my_bool secure_auth;
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/* 0 - never report, 1 - always report (default) */
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my_bool report_data_truncation;
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/* function pointers for local infile support */
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int (*local_infile_init)(void **, const char *, void *);
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int (*local_infile_read)(void *, char *, unsigned int);
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void (*local_infile_end)(void *);
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int (*local_infile_error)(void *, char *, unsigned int);
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void *local_infile_userdata;
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};
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enum mysql_status
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{
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MYSQL_STATUS_READY,MYSQL_STATUS_GET_RESULT,MYSQL_STATUS_USE_RESULT
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};
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enum mysql_protocol_type
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{
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MYSQL_PROTOCOL_DEFAULT, MYSQL_PROTOCOL_TCP, MYSQL_PROTOCOL_SOCKET,
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MYSQL_PROTOCOL_PIPE, MYSQL_PROTOCOL_MEMORY
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};
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/*
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There are three types of queries - the ones that have to go to
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the master, the ones that go to a slave, and the adminstrative
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type which must happen on the pivot connectioin
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*/
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enum mysql_rpl_type
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{
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MYSQL_RPL_MASTER, MYSQL_RPL_SLAVE, MYSQL_RPL_ADMIN
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};
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typedef struct character_set
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{
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unsigned int number; /* character set number */
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unsigned int state; /* character set state */
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const char *csname; /* collation name */
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const char *name; /* character set name */
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const char *comment; /* comment */
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const char *dir; /* character set directory */
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unsigned int mbminlen; /* min. length for multibyte strings */
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unsigned int mbmaxlen; /* max. length for multibyte strings */
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} MY_CHARSET_INFO;
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struct st_mysql_methods;
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struct st_mysql_stmt;
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typedef struct st_mysql
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{
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NET net; /* Communication parameters */
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gptr connector_fd; /* ConnectorFd for SSL */
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char *host,*user,*passwd,*unix_socket,*server_version,*host_info,*info;
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char *db;
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struct charset_info_st *charset;
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MYSQL_FIELD *fields;
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MEM_ROOT field_alloc;
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my_ulonglong affected_rows;
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my_ulonglong insert_id; /* id if insert on table with NEXTNR */
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my_ulonglong extra_info; /* Not used */
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unsigned long thread_id; /* Id for connection in server */
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unsigned long packet_length;
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unsigned int port;
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unsigned long client_flag,server_capabilities;
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unsigned int protocol_version;
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unsigned int field_count;
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unsigned int server_status;
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unsigned int server_language;
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unsigned int warning_count;
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struct st_mysql_options options;
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enum mysql_status status;
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my_bool free_me; /* If free in mysql_close */
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my_bool reconnect; /* set to 1 if automatic reconnect */
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/* session-wide random string */
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char scramble[SCRAMBLE_LENGTH+1];
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/*
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Set if this is the original connection, not a master or a slave we have
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added though mysql_rpl_probe() or mysql_set_master()/ mysql_add_slave()
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*/
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my_bool rpl_pivot;
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/*
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Pointers to the master, and the next slave connections, points to
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itself if lone connection.
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*/
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struct st_mysql* master, *next_slave;
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struct st_mysql* last_used_slave; /* needed for round-robin slave pick */
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/* needed for send/read/store/use result to work correctly with replication */
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struct st_mysql* last_used_con;
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LIST *stmts; /* list of all statements */
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const struct st_mysql_methods *methods;
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void *thd;
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/*
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Points to boolean flag in MYSQL_RES or MYSQL_STMT. We set this flag
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from mysql_stmt_close if close had to cancel result set of this object.
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*/
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my_bool *unbuffered_fetch_owner;
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#if defined(EMBEDDED_LIBRARY) || defined(EMBEDDED_LIBRARY_COMPATIBLE) || MYSQL_VERSION_ID >= 50100
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/* needed for embedded server - no net buffer to store the 'info' */
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char *info_buffer;
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#endif
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} MYSQL;
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typedef struct st_mysql_res {
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my_ulonglong row_count;
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MYSQL_FIELD *fields;
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MYSQL_DATA *data;
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MYSQL_ROWS *data_cursor;
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unsigned long *lengths; /* column lengths of current row */
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MYSQL *handle; /* for unbuffered reads */
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MEM_ROOT field_alloc;
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unsigned int field_count, current_field;
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MYSQL_ROW row; /* If unbuffered read */
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MYSQL_ROW current_row; /* buffer to current row */
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my_bool eof; /* Used by mysql_fetch_row */
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/* mysql_stmt_close() had to cancel this result */
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my_bool unbuffered_fetch_cancelled;
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const struct st_mysql_methods *methods;
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} MYSQL_RES;
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#define MAX_MYSQL_MANAGER_ERR 256
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#define MAX_MYSQL_MANAGER_MSG 256
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#define MANAGER_OK 200
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#define MANAGER_INFO 250
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#define MANAGER_ACCESS 401
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#define MANAGER_CLIENT_ERR 450
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#define MANAGER_INTERNAL_ERR 500
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#if !defined(MYSQL_SERVER) && !defined(MYSQL_CLIENT)
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#define MYSQL_CLIENT
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#endif
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typedef struct st_mysql_manager
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{
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NET net;
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char *host,*user,*passwd;
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unsigned int port;
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my_bool free_me;
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my_bool eof;
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int cmd_status;
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int last_errno;
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char* net_buf,*net_buf_pos,*net_data_end;
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int net_buf_size;
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char last_error[MAX_MYSQL_MANAGER_ERR];
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} MYSQL_MANAGER;
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typedef struct st_mysql_parameters
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{
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unsigned long *p_max_allowed_packet;
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unsigned long *p_net_buffer_length;
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} MYSQL_PARAMETERS;
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#if !defined(MYSQL_SERVER) && !defined(EMBEDDED_LIBRARY)
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#define max_allowed_packet (*mysql_get_parameters()->p_max_allowed_packet)
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#define net_buffer_length (*mysql_get_parameters()->p_net_buffer_length)
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#endif
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/*
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Set up and bring down the server; to ensure that applications will
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work when linked against either the standard client library or the
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embedded server library, these functions should be called.
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*/
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int STDCALL mysql_server_init(int argc, char **argv, char **groups);
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void STDCALL mysql_server_end(void);
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/*
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mysql_server_init/end need to be called when using libmysqld or
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libmysqlclient (exactly, mysql_server_init() is called by mysql_init() so
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you don't need to call it explicitely; but you need to call
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mysql_server_end() to free memory). The names are a bit misleading
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(mysql_SERVER* to be used when using libmysqlCLIENT). So we add more general
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names which suit well whether you're using libmysqld or libmysqlclient. We
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intend to promote these aliases over the mysql_server* ones.
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*/
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#define mysql_library_init mysql_server_init
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#define mysql_library_end mysql_server_end
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MYSQL_PARAMETERS *STDCALL mysql_get_parameters(void);
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/*
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Set up and bring down a thread; these function should be called
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for each thread in an application which opens at least one MySQL
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connection. All uses of the connection(s) should be between these
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function calls.
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*/
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my_bool STDCALL mysql_thread_init(void);
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void STDCALL mysql_thread_end(void);
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/*
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Functions to get information from the MYSQL and MYSQL_RES structures
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Should definitely be used if one uses shared libraries.
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*/
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my_ulonglong STDCALL mysql_num_rows(MYSQL_RES *res);
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unsigned int STDCALL mysql_num_fields(MYSQL_RES *res);
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my_bool STDCALL mysql_eof(MYSQL_RES *res);
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MYSQL_FIELD *STDCALL mysql_fetch_field_direct(MYSQL_RES *res,
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unsigned int fieldnr);
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MYSQL_FIELD * STDCALL mysql_fetch_fields(MYSQL_RES *res);
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MYSQL_ROW_OFFSET STDCALL mysql_row_tell(MYSQL_RES *res);
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MYSQL_FIELD_OFFSET STDCALL mysql_field_tell(MYSQL_RES *res);
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unsigned int STDCALL mysql_field_count(MYSQL *mysql);
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my_ulonglong STDCALL mysql_affected_rows(MYSQL *mysql);
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my_ulonglong STDCALL mysql_insert_id(MYSQL *mysql);
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unsigned int STDCALL mysql_errno(MYSQL *mysql);
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const char * STDCALL mysql_error(MYSQL *mysql);
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const char *STDCALL mysql_sqlstate(MYSQL *mysql);
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unsigned int STDCALL mysql_warning_count(MYSQL *mysql);
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const char * STDCALL mysql_info(MYSQL *mysql);
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unsigned long STDCALL mysql_thread_id(MYSQL *mysql);
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const char * STDCALL mysql_character_set_name(MYSQL *mysql);
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int STDCALL mysql_set_character_set(MYSQL *mysql, const char *csname);
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MYSQL * STDCALL mysql_init(MYSQL *mysql);
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my_bool STDCALL mysql_ssl_set(MYSQL *mysql, const char *key,
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const char *cert, const char *ca,
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const char *capath, const char *cipher);
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const char * STDCALL mysql_get_ssl_cipher(MYSQL *mysql);
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my_bool STDCALL mysql_change_user(MYSQL *mysql, const char *user,
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const char *passwd, const char *db);
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MYSQL * STDCALL mysql_real_connect(MYSQL *mysql, const char *host,
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const char *user,
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const char *passwd,
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const char *db,
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unsigned int port,
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const char *unix_socket,
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unsigned long clientflag);
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int STDCALL mysql_select_db(MYSQL *mysql, const char *db);
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int STDCALL mysql_query(MYSQL *mysql, const char *q);
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int STDCALL mysql_send_query(MYSQL *mysql, const char *q,
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unsigned long length);
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int STDCALL mysql_real_query(MYSQL *mysql, const char *q,
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unsigned long length);
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MYSQL_RES * STDCALL mysql_store_result(MYSQL *mysql);
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MYSQL_RES * STDCALL mysql_use_result(MYSQL *mysql);
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/* perform query on master */
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my_bool STDCALL mysql_master_query(MYSQL *mysql, const char *q,
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unsigned long length);
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my_bool STDCALL mysql_master_send_query(MYSQL *mysql, const char *q,
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unsigned long length);
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/* perform query on slave */
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my_bool STDCALL mysql_slave_query(MYSQL *mysql, const char *q,
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unsigned long length);
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my_bool STDCALL mysql_slave_send_query(MYSQL *mysql, const char *q,
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unsigned long length);
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void STDCALL mysql_get_character_set_info(MYSQL *mysql,
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MY_CHARSET_INFO *charset);
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/* local infile support */
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#define LOCAL_INFILE_ERROR_LEN 512
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void
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mysql_set_local_infile_handler(MYSQL *mysql,
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int (*local_infile_init)(void **, const char *,
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void *),
|
|
int (*local_infile_read)(void *, char *,
|
|
unsigned int),
|
|
void (*local_infile_end)(void *),
|
|
int (*local_infile_error)(void *, char*,
|
|
unsigned int),
|
|
void *);
|
|
|
|
void
|
|
mysql_set_local_infile_default(MYSQL *mysql);
|
|
|
|
|
|
/*
|
|
enable/disable parsing of all queries to decide if they go on master or
|
|
slave
|
|
*/
|
|
void STDCALL mysql_enable_rpl_parse(MYSQL* mysql);
|
|
void STDCALL mysql_disable_rpl_parse(MYSQL* mysql);
|
|
/* get the value of the parse flag */
|
|
int STDCALL mysql_rpl_parse_enabled(MYSQL* mysql);
|
|
|
|
/* enable/disable reads from master */
|
|
void STDCALL mysql_enable_reads_from_master(MYSQL* mysql);
|
|
void STDCALL mysql_disable_reads_from_master(MYSQL* mysql);
|
|
/* get the value of the master read flag */
|
|
my_bool STDCALL mysql_reads_from_master_enabled(MYSQL* mysql);
|
|
|
|
enum mysql_rpl_type STDCALL mysql_rpl_query_type(const char* q, int len);
|
|
|
|
/* discover the master and its slaves */
|
|
my_bool STDCALL mysql_rpl_probe(MYSQL* mysql);
|
|
|
|
/* set the master, close/free the old one, if it is not a pivot */
|
|
int STDCALL mysql_set_master(MYSQL* mysql, const char* host,
|
|
unsigned int port,
|
|
const char* user,
|
|
const char* passwd);
|
|
int STDCALL mysql_add_slave(MYSQL* mysql, const char* host,
|
|
unsigned int port,
|
|
const char* user,
|
|
const char* passwd);
|
|
|
|
int STDCALL mysql_shutdown(MYSQL *mysql,
|
|
enum mysql_enum_shutdown_level
|
|
shutdown_level);
|
|
int STDCALL mysql_dump_debug_info(MYSQL *mysql);
|
|
int STDCALL mysql_refresh(MYSQL *mysql,
|
|
unsigned int refresh_options);
|
|
int STDCALL mysql_kill(MYSQL *mysql,unsigned long pid);
|
|
int STDCALL mysql_set_server_option(MYSQL *mysql,
|
|
enum enum_mysql_set_option
|
|
option);
|
|
int STDCALL mysql_ping(MYSQL *mysql);
|
|
const char * STDCALL mysql_stat(MYSQL *mysql);
|
|
const char * STDCALL mysql_get_server_info(MYSQL *mysql);
|
|
const char * STDCALL mysql_get_client_info(void);
|
|
unsigned long STDCALL mysql_get_client_version(void);
|
|
const char * STDCALL mysql_get_host_info(MYSQL *mysql);
|
|
unsigned long STDCALL mysql_get_server_version(MYSQL *mysql);
|
|
unsigned int STDCALL mysql_get_proto_info(MYSQL *mysql);
|
|
MYSQL_RES * STDCALL mysql_list_dbs(MYSQL *mysql,const char *wild);
|
|
MYSQL_RES * STDCALL mysql_list_tables(MYSQL *mysql,const char *wild);
|
|
MYSQL_RES * STDCALL mysql_list_processes(MYSQL *mysql);
|
|
int STDCALL mysql_options(MYSQL *mysql,enum mysql_option option,
|
|
const char *arg);
|
|
void STDCALL mysql_free_result(MYSQL_RES *result);
|
|
void STDCALL mysql_data_seek(MYSQL_RES *result,
|
|
my_ulonglong offset);
|
|
MYSQL_ROW_OFFSET STDCALL mysql_row_seek(MYSQL_RES *result,
|
|
MYSQL_ROW_OFFSET offset);
|
|
MYSQL_FIELD_OFFSET STDCALL mysql_field_seek(MYSQL_RES *result,
|
|
MYSQL_FIELD_OFFSET offset);
|
|
MYSQL_ROW STDCALL mysql_fetch_row(MYSQL_RES *result);
|
|
unsigned long * STDCALL mysql_fetch_lengths(MYSQL_RES *result);
|
|
MYSQL_FIELD * STDCALL mysql_fetch_field(MYSQL_RES *result);
|
|
MYSQL_RES * STDCALL mysql_list_fields(MYSQL *mysql, const char *table,
|
|
const char *wild);
|
|
unsigned long STDCALL mysql_escape_string(char *to,const char *from,
|
|
unsigned long from_length);
|
|
unsigned long STDCALL mysql_hex_string(char *to,const char *from,
|
|
unsigned long from_length);
|
|
unsigned long STDCALL mysql_real_escape_string(MYSQL *mysql,
|
|
char *to,const char *from,
|
|
unsigned long length);
|
|
void STDCALL mysql_debug(const char *debug);
|
|
char * STDCALL mysql_odbc_escape_string(MYSQL *mysql,
|
|
char *to,
|
|
unsigned long to_length,
|
|
const char *from,
|
|
unsigned long from_length,
|
|
void *param,
|
|
char *
|
|
(*extend_buffer)
|
|
(void *, char *to,
|
|
unsigned long *length));
|
|
void STDCALL myodbc_remove_escape(MYSQL *mysql,char *name);
|
|
unsigned int STDCALL mysql_thread_safe(void);
|
|
my_bool STDCALL mysql_embedded(void);
|
|
MYSQL_MANAGER* STDCALL mysql_manager_init(MYSQL_MANAGER* con);
|
|
MYSQL_MANAGER* STDCALL mysql_manager_connect(MYSQL_MANAGER* con,
|
|
const char* host,
|
|
const char* user,
|
|
const char* passwd,
|
|
unsigned int port);
|
|
void STDCALL mysql_manager_close(MYSQL_MANAGER* con);
|
|
int STDCALL mysql_manager_command(MYSQL_MANAGER* con,
|
|
const char* cmd, int cmd_len);
|
|
int STDCALL mysql_manager_fetch_line(MYSQL_MANAGER* con,
|
|
char* res_buf,
|
|
int res_buf_size);
|
|
my_bool STDCALL mysql_read_query_result(MYSQL *mysql);
|
|
|
|
|
|
/*
|
|
The following definitions are added for the enhanced
|
|
client-server protocol
|
|
*/
|
|
|
|
/* statement state */
|
|
enum enum_mysql_stmt_state
|
|
{
|
|
MYSQL_STMT_INIT_DONE= 1, MYSQL_STMT_PREPARE_DONE, MYSQL_STMT_EXECUTE_DONE,
|
|
MYSQL_STMT_FETCH_DONE
|
|
};
|
|
|
|
|
|
/*
|
|
This structure is used to define bind information, and
|
|
internally by the client library.
|
|
Public members with their descriptions are listed below
|
|
(conventionally `On input' refers to the binds given to
|
|
mysql_stmt_bind_param, `On output' refers to the binds given
|
|
to mysql_stmt_bind_result):
|
|
|
|
buffer_type - One of the MYSQL_* types, used to describe
|
|
the host language type of buffer.
|
|
On output: if column type is different from
|
|
buffer_type, column value is automatically converted
|
|
to buffer_type before it is stored in the buffer.
|
|
buffer - On input: points to the buffer with input data.
|
|
On output: points to the buffer capable to store
|
|
output data.
|
|
The type of memory pointed by buffer must correspond
|
|
to buffer_type. See the correspondence table in
|
|
the comment to mysql_stmt_bind_param.
|
|
|
|
The two above members are mandatory for any kind of bind.
|
|
|
|
buffer_length - the length of the buffer. You don't have to set
|
|
it for any fixed length buffer: float, double,
|
|
int, etc. It must be set however for variable-length
|
|
types, such as BLOBs or STRINGs.
|
|
|
|
length - On input: in case when lengths of input values
|
|
are different for each execute, you can set this to
|
|
point at a variable containining value length. This
|
|
way the value length can be different in each execute.
|
|
If length is not NULL, buffer_length is not used.
|
|
Note, length can even point at buffer_length if
|
|
you keep bind structures around while fetching:
|
|
this way you can change buffer_length before
|
|
each execution, everything will work ok.
|
|
On output: if length is set, mysql_stmt_fetch will
|
|
write column length into it.
|
|
|
|
is_null - On input: points to a boolean variable that should
|
|
be set to TRUE for NULL values.
|
|
This member is useful only if your data may be
|
|
NULL in some but not all cases.
|
|
If your data is never NULL, is_null should be set to 0.
|
|
If your data is always NULL, set buffer_type
|
|
to MYSQL_TYPE_NULL, and is_null will not be used.
|
|
|
|
is_unsigned - On input: used to signify that values provided for one
|
|
of numeric types are unsigned.
|
|
On output describes signedness of the output buffer.
|
|
If, taking into account is_unsigned flag, column data
|
|
is out of range of the output buffer, data for this column
|
|
is regarded truncated. Note that this has no correspondence
|
|
to the sign of result set column, if you need to find it out
|
|
use mysql_stmt_result_metadata.
|
|
error - where to write a truncation error if it is present.
|
|
possible error value is:
|
|
0 no truncation
|
|
1 value is out of range or buffer is too small
|
|
|
|
Please note that MYSQL_BIND also has internals members.
|
|
*/
|
|
|
|
typedef struct st_mysql_bind
|
|
{
|
|
unsigned long *length; /* output length pointer */
|
|
my_bool *is_null; /* Pointer to null indicator */
|
|
void *buffer; /* buffer to get/put data */
|
|
/* set this if you want to track data truncations happened during fetch */
|
|
my_bool *error;
|
|
enum enum_field_types buffer_type; /* buffer type */
|
|
/* output buffer length, must be set when fetching str/binary */
|
|
unsigned long buffer_length;
|
|
unsigned char *row_ptr; /* for the current data position */
|
|
unsigned long offset; /* offset position for char/binary fetch */
|
|
unsigned long length_value; /* Used if length is 0 */
|
|
unsigned int param_number; /* For null count and error messages */
|
|
unsigned int pack_length; /* Internal length for packed data */
|
|
my_bool error_value; /* used if error is 0 */
|
|
my_bool is_unsigned; /* set if integer type is unsigned */
|
|
my_bool long_data_used; /* If used with mysql_send_long_data */
|
|
my_bool is_null_value; /* Used if is_null is 0 */
|
|
void (*store_param_func)(NET *net, struct st_mysql_bind *param);
|
|
void (*fetch_result)(struct st_mysql_bind *, MYSQL_FIELD *,
|
|
unsigned char **row);
|
|
void (*skip_result)(struct st_mysql_bind *, MYSQL_FIELD *,
|
|
unsigned char **row);
|
|
} MYSQL_BIND;
|
|
|
|
|
|
/* statement handler */
|
|
typedef struct st_mysql_stmt
|
|
{
|
|
MEM_ROOT mem_root; /* root allocations */
|
|
LIST list; /* list to keep track of all stmts */
|
|
MYSQL *mysql; /* connection handle */
|
|
MYSQL_BIND *params; /* input parameters */
|
|
MYSQL_BIND *bind; /* output parameters */
|
|
MYSQL_FIELD *fields; /* result set metadata */
|
|
MYSQL_DATA result; /* cached result set */
|
|
MYSQL_ROWS *data_cursor; /* current row in cached result */
|
|
/* copy of mysql->affected_rows after statement execution */
|
|
my_ulonglong affected_rows;
|
|
my_ulonglong insert_id; /* copy of mysql->insert_id */
|
|
/*
|
|
mysql_stmt_fetch() calls this function to fetch one row (it's different
|
|
for buffered, unbuffered and cursor fetch).
|
|
*/
|
|
int (*read_row_func)(struct st_mysql_stmt *stmt,
|
|
unsigned char **row);
|
|
unsigned long stmt_id; /* Id for prepared statement */
|
|
unsigned long flags; /* i.e. type of cursor to open */
|
|
unsigned long prefetch_rows; /* number of rows per one COM_FETCH */
|
|
/*
|
|
Copied from mysql->server_status after execute/fetch to know
|
|
server-side cursor status for this statement.
|
|
*/
|
|
unsigned int server_status;
|
|
unsigned int last_errno; /* error code */
|
|
unsigned int param_count; /* input parameter count */
|
|
unsigned int field_count; /* number of columns in result set */
|
|
enum enum_mysql_stmt_state state; /* statement state */
|
|
char last_error[MYSQL_ERRMSG_SIZE]; /* error message */
|
|
char sqlstate[SQLSTATE_LENGTH+1];
|
|
/* Types of input parameters should be sent to server */
|
|
my_bool send_types_to_server;
|
|
my_bool bind_param_done; /* input buffers were supplied */
|
|
unsigned char bind_result_done; /* output buffers were supplied */
|
|
/* mysql_stmt_close() had to cancel this result */
|
|
my_bool unbuffered_fetch_cancelled;
|
|
/*
|
|
Is set to true if we need to calculate field->max_length for
|
|
metadata fields when doing mysql_stmt_store_result.
|
|
*/
|
|
my_bool update_max_length;
|
|
} MYSQL_STMT;
|
|
|
|
enum enum_stmt_attr_type
|
|
{
|
|
/*
|
|
When doing mysql_stmt_store_result calculate max_length attribute
|
|
of statement metadata. This is to be consistent with the old API,
|
|
where this was done automatically.
|
|
In the new API we do that only by request because it slows down
|
|
mysql_stmt_store_result sufficiently.
|
|
*/
|
|
STMT_ATTR_UPDATE_MAX_LENGTH,
|
|
/*
|
|
unsigned long with combination of cursor flags (read only, for update,
|
|
etc)
|
|
*/
|
|
STMT_ATTR_CURSOR_TYPE,
|
|
/*
|
|
Amount of rows to retrieve from server per one fetch if using cursors.
|
|
Accepts unsigned long attribute in the range 1 - ulong_max
|
|
*/
|
|
STMT_ATTR_PREFETCH_ROWS
|
|
};
|
|
|
|
|
|
typedef struct st_mysql_methods
|
|
{
|
|
my_bool (*read_query_result)(MYSQL *mysql);
|
|
my_bool (*advanced_command)(MYSQL *mysql,
|
|
enum enum_server_command command,
|
|
const char *header,
|
|
unsigned long header_length,
|
|
const char *arg,
|
|
unsigned long arg_length,
|
|
my_bool skip_check,
|
|
MYSQL_STMT *stmt);
|
|
MYSQL_DATA *(*read_rows)(MYSQL *mysql,MYSQL_FIELD *mysql_fields,
|
|
unsigned int fields);
|
|
MYSQL_RES * (*use_result)(MYSQL *mysql);
|
|
void (*fetch_lengths)(unsigned long *to,
|
|
MYSQL_ROW column, unsigned int field_count);
|
|
void (*flush_use_result)(MYSQL *mysql);
|
|
#if !defined(MYSQL_SERVER) || defined(EMBEDDED_LIBRARY)
|
|
MYSQL_FIELD * (*list_fields)(MYSQL *mysql);
|
|
my_bool (*read_prepare_result)(MYSQL *mysql, MYSQL_STMT *stmt);
|
|
int (*stmt_execute)(MYSQL_STMT *stmt);
|
|
int (*read_binary_rows)(MYSQL_STMT *stmt);
|
|
int (*unbuffered_fetch)(MYSQL *mysql, char **row);
|
|
void (*free_embedded_thd)(MYSQL *mysql);
|
|
const char *(*read_statistics)(MYSQL *mysql);
|
|
my_bool (*next_result)(MYSQL *mysql);
|
|
int (*read_change_user_result)(MYSQL *mysql, char *buff, const char *passwd);
|
|
int (*read_rows_from_cursor)(MYSQL_STMT *stmt);
|
|
#endif
|
|
} MYSQL_METHODS;
|
|
|
|
|
|
MYSQL_STMT * STDCALL mysql_stmt_init(MYSQL *mysql);
|
|
int STDCALL mysql_stmt_prepare(MYSQL_STMT *stmt, const char *query,
|
|
unsigned long length);
|
|
int STDCALL mysql_stmt_execute(MYSQL_STMT *stmt);
|
|
int STDCALL mysql_stmt_fetch(MYSQL_STMT *stmt);
|
|
int STDCALL mysql_stmt_fetch_column(MYSQL_STMT *stmt, MYSQL_BIND *bind,
|
|
unsigned int column,
|
|
unsigned long offset);
|
|
int STDCALL mysql_stmt_store_result(MYSQL_STMT *stmt);
|
|
unsigned long STDCALL mysql_stmt_param_count(MYSQL_STMT * stmt);
|
|
my_bool STDCALL mysql_stmt_attr_set(MYSQL_STMT *stmt,
|
|
enum enum_stmt_attr_type attr_type,
|
|
const void *attr);
|
|
my_bool STDCALL mysql_stmt_attr_get(MYSQL_STMT *stmt,
|
|
enum enum_stmt_attr_type attr_type,
|
|
void *attr);
|
|
my_bool STDCALL mysql_stmt_bind_param(MYSQL_STMT * stmt, MYSQL_BIND * bnd);
|
|
my_bool STDCALL mysql_stmt_bind_result(MYSQL_STMT * stmt, MYSQL_BIND * bnd);
|
|
my_bool STDCALL mysql_stmt_close(MYSQL_STMT * stmt);
|
|
my_bool STDCALL mysql_stmt_reset(MYSQL_STMT * stmt);
|
|
my_bool STDCALL mysql_stmt_free_result(MYSQL_STMT *stmt);
|
|
my_bool STDCALL mysql_stmt_send_long_data(MYSQL_STMT *stmt,
|
|
unsigned int param_number,
|
|
const char *data,
|
|
unsigned long length);
|
|
MYSQL_RES *STDCALL mysql_stmt_result_metadata(MYSQL_STMT *stmt);
|
|
MYSQL_RES *STDCALL mysql_stmt_param_metadata(MYSQL_STMT *stmt);
|
|
unsigned int STDCALL mysql_stmt_errno(MYSQL_STMT * stmt);
|
|
const char *STDCALL mysql_stmt_error(MYSQL_STMT * stmt);
|
|
const char *STDCALL mysql_stmt_sqlstate(MYSQL_STMT * stmt);
|
|
MYSQL_ROW_OFFSET STDCALL mysql_stmt_row_seek(MYSQL_STMT *stmt,
|
|
MYSQL_ROW_OFFSET offset);
|
|
MYSQL_ROW_OFFSET STDCALL mysql_stmt_row_tell(MYSQL_STMT *stmt);
|
|
void STDCALL mysql_stmt_data_seek(MYSQL_STMT *stmt, my_ulonglong offset);
|
|
my_ulonglong STDCALL mysql_stmt_num_rows(MYSQL_STMT *stmt);
|
|
my_ulonglong STDCALL mysql_stmt_affected_rows(MYSQL_STMT *stmt);
|
|
my_ulonglong STDCALL mysql_stmt_insert_id(MYSQL_STMT *stmt);
|
|
unsigned int STDCALL mysql_stmt_field_count(MYSQL_STMT *stmt);
|
|
|
|
my_bool STDCALL mysql_commit(MYSQL * mysql);
|
|
my_bool STDCALL mysql_rollback(MYSQL * mysql);
|
|
my_bool STDCALL mysql_autocommit(MYSQL * mysql, my_bool auto_mode);
|
|
my_bool STDCALL mysql_more_results(MYSQL *mysql);
|
|
int STDCALL mysql_next_result(MYSQL *mysql);
|
|
void STDCALL mysql_close(MYSQL *sock);
|
|
|
|
|
|
/* status return codes */
|
|
#define MYSQL_NO_DATA 100
|
|
#define MYSQL_DATA_TRUNCATED 101
|
|
|
|
#define mysql_reload(mysql) mysql_refresh((mysql),REFRESH_GRANT)
|
|
|
|
#ifdef USE_OLD_FUNCTIONS
|
|
MYSQL * STDCALL mysql_connect(MYSQL *mysql, const char *host,
|
|
const char *user, const char *passwd);
|
|
int STDCALL mysql_create_db(MYSQL *mysql, const char *DB);
|
|
int STDCALL mysql_drop_db(MYSQL *mysql, const char *DB);
|
|
#define mysql_reload(mysql) mysql_refresh((mysql),REFRESH_GRANT)
|
|
#endif
|
|
#define HAVE_MYSQL_REAL_CONNECT
|
|
|
|
/*
|
|
The following functions are mainly exported because of mysqlbinlog;
|
|
They are not for general usage
|
|
*/
|
|
|
|
#define simple_command(mysql, command, arg, length, skip_check) \
|
|
(*(mysql)->methods->advanced_command)(mysql, command, NullS, \
|
|
0, arg, length, skip_check, NULL)
|
|
#define stmt_command(mysql, command, arg, length, stmt) \
|
|
(*(mysql)->methods->advanced_command)(mysql, command, NullS, \
|
|
0, arg, length, 1, stmt)
|
|
|
|
#ifdef __NETWARE__
|
|
#pragma pack(pop) /* restore alignment */
|
|
#endif
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
|
|
#endif /* _mysql_h */
|