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/* -*- mode: c; c-basic-offset: 2; indent-tabs-mode: nil; -*-
* vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
*
* Copyright (C) 2008 Sun Microsystems, Inc.
*
* 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
*/
/*
** Common definition between mysql server & client
*/
#ifndef DRIZZLED_COMMON_H
#define DRIZZLED_COMMON_H
#include <unistd.h>
#include <stdint.h>
#include <drizzled/korr.h>
/*
This is included in the server and in the client.
Options for select set by the yacc parser (stored in lex->options).
XXX:
log_event.h defines OPTIONS_WRITTEN_TO_BIN_LOG to specify what THD
options list are written into binlog. These options can NOT change their
values, or it will break replication between version.
context is encoded as following:
SELECT - Select_Lex_Node::options
THD - THD::options
intern - neither. used only as
func(..., select_node->options | thd->options | OPTION_XXX, ...)
TODO: separate three contexts above, move them to separate bitfields.
*/
#define SELECT_DISTINCT (UINT64_C(1) << 0) // SELECT, user
#define SELECT_STRAIGHT_JOIN (UINT64_C(1) << 1) // SELECT, user
#define SELECT_DESCRIBE (UINT64_C(1) << 2) // SELECT, user
#define SELECT_SMALL_RESULT (UINT64_C(1) << 3) // SELECT, user
#define SELECT_BIG_RESULT (UINT64_C(1) << 4) // SELECT, user
#define OPTION_FOUND_ROWS (UINT64_C(1) << 5) // SELECT, user
#define SELECT_NO_JOIN_CACHE (UINT64_C(1) << 7) // intern
#define OPTION_BIG_TABLES (UINT64_C(1) << 8) // THD, user
#define OPTION_BIG_SELECTS (UINT64_C(1) << 9) // THD, user
#define OPTION_LOG_OFF (UINT64_C(1) << 10) // THD, user
#define TMP_TABLE_ALL_COLUMNS (UINT64_C(1) << 12) // SELECT, intern
#define OPTION_WARNINGS (UINT64_C(1) << 13) // THD, user
#define OPTION_AUTO_IS_NULL (UINT64_C(1) << 14) // THD, user, binlog
#define OPTION_FOUND_COMMENT (UINT64_C(1) << 15) // SELECT, intern, parser
#define OPTION_SAFE_UPDATES (UINT64_C(1) << 16) // THD, user
#define OPTION_BUFFER_RESULT (UINT64_C(1) << 17) // SELECT, user
#define OPTION_NOT_AUTOCOMMIT (UINT64_C(1) << 19) // THD, user
#define OPTION_BEGIN (UINT64_C(1) << 20) // THD, intern
#define OPTION_QUICK (UINT64_C(1) << 22) // SELECT (for DELETE)
/* The following is used to detect a conflict with DISTINCT */
#define SELECT_ALL (UINT64_C(1) << 24) // SELECT, user, parser
/** The following can be set when importing tables in a 'wrong order'
to suppress foreign key checks */
#define OPTION_NO_FOREIGN_KEY_CHECKS (UINT64_C(1) << 26) // THD, user, binlog
/** The following speeds up inserts to InnoDB tables by suppressing unique
key checks in some cases */
#define OPTION_RELAXED_UNIQUE_CHECKS (UINT64_C(1) << 27) // THD, user, binlog
#define SELECT_NO_UNLOCK (UINT64_C(1) << 28) // SELECT, intern
#define OPTION_SCHEMA_TABLE (UINT64_C(1) << 29) // SELECT, intern
/** Flag set if setup_tables already done */
#define OPTION_SETUP_TABLES_DONE (UINT64_C(1) << 30) // intern
/** If not set then the thread will ignore all warnings with level notes. */
#define OPTION_SQL_NOTES (UINT64_C(1) << 31) // THD, user
/**
Force the used temporary table to be a MyISAM table (because we will use
fulltext functions when reading from it.
*/
#define TMP_TABLE_FORCE_MYISAM (UINT64_C(1) << 32)
#define OPTION_PROFILING (UINT64_C(1) << 33)
/*
Dont report errors for individual rows,
But just report error on commit (or read ofcourse)
*/
#define OPTION_ALLOW_BATCH (UINT64_C(1) << 33) // THD, intern (slave)
/**
Maximum length of time zone name that we support
(Time zone name is char(64) in db). mysqlbinlog needs it.
*/
#define MAX_TIME_ZONE_NAME_LENGTH (NAME_LEN + 1)
#define HOSTNAME_LENGTH 60
#define SYSTEM_CHARSET_MBMAXLEN 4
#define USERNAME_CHAR_LENGTH 16
#define NAME_CHAR_LEN 64 /* Field/table name length */
#define NAME_LEN (NAME_CHAR_LEN*SYSTEM_CHARSET_MBMAXLEN)
#define USERNAME_LENGTH (USERNAME_CHAR_LENGTH*SYSTEM_CHARSET_MBMAXLEN)
#define SERVER_VERSION_LENGTH 60
#define SQLSTATE_LENGTH 5
/*
Maximum length of comments
*/
#define TABLE_COMMENT_MAXLEN 2048
#define COLUMN_COMMENT_MAXLEN 1024
#define INDEX_COMMENT_MAXLEN 1024
/*
USER_HOST_BUFF_SIZE -- length of string buffer, that is enough to contain
username and hostname parts of the user identifier with trailing zero in
MySQL standard format:
user_name_part@host_name_part\0
*/
#define USER_HOST_BUFF_SIZE HOSTNAME_LENGTH + USERNAME_LENGTH + 2
#define LOCAL_HOST "localhost"
/*
You should add new commands to the end of this list, otherwise old
servers won't be able to handle them as 'unsupported'.
*/
enum enum_server_command
{
COM_SLEEP,
COM_QUIT,
COM_INIT_DB,
COM_QUERY,
COM_SHUTDOWN,
COM_CONNECT,
COM_PING,
/* don't forget to update const char *command_name[] in sql_parse.cc */
/* Must be last */
COM_END
};
/*
Length of random string sent by server on handshake; this is also length of
obfuscated password, recieved from client
*/
#define SCRAMBLE_LENGTH 20
#define SCRAMBLE_LENGTH_323 8
#define NOT_NULL_FLAG 1 /* Field can't be NULL */
#define PRI_KEY_FLAG 2 /* Field is part of a primary key */
#define UNIQUE_KEY_FLAG 4 /* Field is part of a unique key */
#define MULTIPLE_KEY_FLAG 8 /* Field is part of a key */
#define BLOB_FLAG 16 /* Field is a blob */
#define UNSIGNED_FLAG 32 /* Field is unsigned */
#define BINARY_FLAG 128 /* Field is binary */
/* The following are only sent to new clients */
#define ENUM_FLAG 256 /* field is an enum */
#define AUTO_INCREMENT_FLAG 512 /* field is a autoincrement field */
#define TIMESTAMP_FLAG 1024 /* Field is a timestamp */
#define SET_FLAG 2048 /* field is a set */
#define NO_DEFAULT_VALUE_FLAG 4096 /* Field doesn't have default value */
#define ON_UPDATE_NOW_FLAG 8192 /* Field is set to NOW on UPDATE */
#define NUM_FLAG 32768 /* Field is num (for clients) */
#define PART_KEY_FLAG 16384 /* Intern; Part of some key */
#define GROUP_FLAG 32768 /* Intern: Group field */
#define UNIQUE_FLAG 65536 /* Intern: Used by sql_yacc */
#define BINCMP_FLAG 131072 /* Intern: Used by sql_yacc */
#define GET_FIXED_FIELDS_FLAG (1 << 18) /* Used to get fields in item tree */
#define FIELD_IN_PART_FUNC_FLAG (1 << 19)/* Field part of partition func */
#define FIELD_IN_ADD_INDEX (1<< 20) /* Intern: Field used in ADD INDEX */
#define FIELD_IS_RENAMED (1<< 21) /* Intern: Field is being renamed */
#define FIELD_STORAGE_FLAGS 22 /* Storage type: bit 22, 23 and 24 */
#define COLUMN_FORMAT_FLAGS 25 /* Column format: bit 25, 26 and 27 */
#define REFRESH_LOG 2 /* Start on new log file */
#define REFRESH_TABLES 4 /* close all tables */
#define REFRESH_STATUS 16 /* Flush status variables */
/* The following can't be set with mysql_refresh() */
#define REFRESH_READ_LOCK 16384 /* Lock tables for read */
#define REFRESH_FAST 32768 /* Intern flag */
#define SERVER_STATUS_IN_TRANS 1 /* Transaction has started */
#define SERVER_STATUS_AUTOCOMMIT 2 /* Server in auto_commit mode */
#define SERVER_MORE_RESULTS_EXISTS 8 /* Multi query - next query exists */
#define SERVER_QUERY_NO_GOOD_INDEX_USED 16
#define SERVER_QUERY_NO_INDEX_USED 32
/*
The server was able to fulfill the clients request and opened a
read-only non-scrollable cursor for a query. This flag comes
in reply to COM_STMT_EXECUTE and COM_STMT_FETCH commands.
*/
#define SERVER_STATUS_CURSOR_EXISTS 64
/*
This flag is sent when a read-only cursor is exhausted, in reply to
COM_STMT_FETCH command.
*/
#define SERVER_STATUS_LAST_ROW_SENT 128
#define SERVER_STATUS_DB_DROPPED 256 /* A database was dropped */
#define SERVER_STATUS_NO_BACKSLASH_ESCAPES 512
/*
Tell clients that this query was logged to the slow query log.
Not yet set in the server, but interface is defined for applications
to use. See WorkLog 4098.
*/
#define SERVER_QUERY_WAS_SLOW 1024
#define DRIZZLE_ERRMSG_SIZE 512
#define ONLY_KILL_QUERY 1
#define MAX_INT_WIDTH 10 /* Max width for a LONG w.o. sign */
#define MAX_BIGINT_WIDTH 20 /* Max width for a LONGLONG */
#define MAX_CHAR_WIDTH 255 /* Max length for a CHAR colum */
#define MAX_BLOB_WIDTH (uint32_t)16777216 /* Default width for blob */
#define DRIZZLE_PROTOCOL_NO_MORE_DATA 0xFE
#define packet_error (~(uint32_t) 0)
/* Shutdown/kill enums and constants */
/* Bits for THD::killable. */
#define DRIZZLE_SHUTDOWN_KILLABLE_CONNECT (unsigned char)(1 << 0)
#define DRIZZLE_SHUTDOWN_KILLABLE_TRANS (unsigned char)(1 << 1)
#define DRIZZLE_SHUTDOWN_KILLABLE_LOCK_TABLE (unsigned char)(1 << 2)
#define DRIZZLE_SHUTDOWN_KILLABLE_UPDATE (unsigned char)(1 << 3)
enum enum_field_types { DRIZZLE_TYPE_LONG,
DRIZZLE_TYPE_DOUBLE,
DRIZZLE_TYPE_NULL,
DRIZZLE_TYPE_TIMESTAMP,
DRIZZLE_TYPE_LONGLONG,
DRIZZLE_TYPE_DATETIME,
DRIZZLE_TYPE_DATE,
DRIZZLE_TYPE_VARCHAR,
DRIZZLE_TYPE_DECIMAL,
DRIZZLE_TYPE_ENUM,
DRIZZLE_TYPE_BLOB,
DRIZZLE_TYPE_MAX=DRIZZLE_TYPE_BLOB
};
/* The following is for user defined functions */
enum Item_result {STRING_RESULT=0, REAL_RESULT, INT_RESULT, ROW_RESULT,
DECIMAL_RESULT};
typedef struct st_udf_args
{
unsigned int arg_count; /* Number of arguments */
enum Item_result *arg_type; /* Pointer to item_results */
char **args; /* Pointer to argument */
unsigned long *lengths; /* Length of string arguments */
char *maybe_null; /* Set to 1 for all maybe_null args */
char **attributes; /* Pointer to attribute name */
unsigned long *attribute_lengths; /* Length of attribute arguments */
void *extension;
} UDF_ARGS;
/* This holds information about the result */
typedef struct st_udf_init
{
bool maybe_null; /* 1 if function can return NULL */
unsigned int decimals; /* for real functions */
unsigned long max_length; /* For string functions */
char *ptr; /* free pointer for function data */
bool const_item; /* 1 if function always returns the same value */
void *extension;
} UDF_INIT;
/*
TODO: add a notion for determinism of the UDF.
See Item_udf_func::update_used_tables ()
*/
/* Constants when using compression */
#define NET_HEADER_SIZE 4 /* standard header size */
#define COMP_HEADER_SIZE 3 /* compression header extra size */
#endif /* DRIZZLED_COMMON_H */
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