firebird-mirror/src/jrd/constants.h

/*
 *	PROGRAM:	JRD Access Method
 *	MODULE:		constants.h
 *	DESCRIPTION:	Misc system constants
 *
 * The contents of this file are subject to the Interbase Public
 * License Version 1.0 (the "License"); you may not use this file
 * except in compliance with the License. You may obtain a copy
 * of the License at http://www.Inprise.com/IPL.html
 *
 * Software distributed under the License is distributed on an
 * "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, either express
 * or implied. See the License for the specific language governing
 * rights and limitations under the License.
 *
 * The Original Code was created by Inprise Corporation
 * and its predecessors. Portions created by Inprise Corporation are
 * Copyright (C) Inprise Corporation.
 *
 * All Rights Reserved.
 * Contributor(s): ______________________________________.
 *
 * 2001.10.08 Claudio Valderrama: fb_sysflag enum with numbering
 *   for automatically created triggers that aren't system triggers.
 */

#ifndef JRD_CONSTANTS_H
#define JRD_CONSTANTS_H

/* BLOb Subtype definitions */

/* Subtypes < 0  are user defined
 * Subtype  0    means "untyped"
 * Subtypes > 0  are Firebird defined
 */

// BRS 29-Apr-2004
// replace those constants with public defined ones isc_blob_*
//
//const int BLOB_untyped	= 0;
//
//const int BLOB_text		= 1;
//const int BLOB_blr		= 2;
//const int BLOB_acl		= 3;
//const int BLOB_ranges	= 4;
//const int BLOB_summary	= 5;
//const int BLOB_format	= 6;
//const int BLOB_tra		= 7;
//const int BLOB_extfile	= 8;
//const int BLOB_max_predefined_subtype = 9;
//

/* Column Limits */

const ULONG MAX_COLUMN_SIZE	= 32767;	/* Bytes */

/* Misc constant values */

const unsigned int USERNAME_LENGTH	= 31;	// Characters; beware that USER_NAME_LEN = 133 in gsec.h

const size_t MAX_SQL_IDENTIFIER_SIZE = 32;
const size_t MAX_SQL_IDENTIFIER_LEN = MAX_SQL_IDENTIFIER_SIZE - 1;
typedef TEXT SqlIdentifier[MAX_SQL_IDENTIFIER_SIZE];

const char* const NULL_STRING_MARK = "*** null ***";
const char* const UNKNOWN_STRING_MARK = "*** unknown ***";

const char* const ISC_USER = "ISC_USER";
const char* const ISC_PASSWORD = "ISC_PASSWORD";

const char* const NULL_ROLE = "NONE";
const char* const ADMIN_ROLE = "RDB$ADMIN";

// User name assigned to any user granted USR_locksmith rights.
// If this name is changed, modify also the trigger in
// jrd/grant.gdl (which turns into jrd/trig.h.
const char* const SYSDBA_USER_NAME = "SYSDBA";

// This temporary set of flags is needed to implement minimum form of
// ALTER ROLE RDB$ADMIN ADD/DROP SYSTEM_NAME "Domain Admins".
// Value 1 is skipped because rdb$system_flag = 1 is used in all other cases.
const SSHORT ROLE_FLAG_MAY_TRUST	= 2;
const SSHORT ROLE_FLAG_DBO			= 4;

const char* const PRIMARY_KEY		= "PRIMARY KEY";
const char* const FOREIGN_KEY		= "FOREIGN KEY";
const char* const UNIQUE_CNSTRT		= "UNIQUE";
const char* const CHECK_CNSTRT		= "CHECK";
const char* const NOT_NULL_CNSTRT	= "NOT NULL";

const char* const REL_SCOPE_PERSISTENT		= "persistent table \"%s\"";
const char* const REL_SCOPE_GTT_PRESERVE	= "global temporary table \"%s\" of type ON COMMIT PRESERVE ROWS";
const char* const REL_SCOPE_GTT_DELETE		= "global temporary table \"%s\" of type ON COMMIT DELETE ROWS";

/* literal strings in rdb$ref_constraints to be used to identify
   the cascade actions for referential constraints. Used
   by isql/show and isql/extract for now. */

const char* const RI_ACTION_CASCADE = "CASCADE";
const char* const RI_ACTION_NULL    = "SET NULL";
const char* const RI_ACTION_DEFAULT = "SET DEFAULT";
const char* const RI_ACTION_NONE    = "NO ACTION";
const char* const RI_RESTRICT       = "RESTRICT";

// Automatically created domains for fields with direct data type.
// Also, automatically created indices that are unique or non-unique, but not PK.
const char* const IMPLICIT_DOMAIN_PREFIX = "RDB$";
const int IMPLICIT_DOMAIN_PREFIX_LEN = 4;

// Automatically created indices for PKs.
const char* const IMPLICIT_PK_PREFIX = "RDB$PRIMARY";
const int IMPLICIT_PK_PREFIX_LEN = 11;

// Automatically created security classes for SQL objects.
// Keep in sync with trig.h
const char* const DEFAULT_CLASS				= "SQL$DEFAULT";
const char* const SQL_SECCLASS_GENERATOR	= "RDB$SECURITY_CLASS";
const char* const SQL_SECCLASS_PREFIX		= "SQL$";
const int SQL_SECCLASS_PREFIX_LEN			= 4;
const char* const SQL_FLD_SECCLASS_PREFIX	= "SQL$GRANT";
const int SQL_FLD_SECCLASS_PREFIX_LEN		= 9;

// Automatically created check constraints for unnamed PRIMARY and UNIQUE declarations.
const char* const IMPLICIT_INTEGRITY_PREFIX = "INTEG_";
const int IMPLICIT_INTEGRITY_PREFIX_LEN = 6;


/******************************************/
/* System flag meaning - mainly Firebird. */
/******************************************/

enum fb_sysflag {
	fb_sysflag_user = 0,
	fb_sysflag_system = 1,
	fb_sysflag_qli = 2,
	fb_sysflag_check_constraint = 3,
	fb_sysflag_referential_constraint = 4,
	fb_sysflag_view_check = 5
};


/* UDF Arguments are numbered from 0 to MAX_UDF_ARGUMENTS --
   argument 0 is reserved for the return-type of the UDF */

const int MAX_UDF_ARGUMENTS	= 10;

// Maximum length of single line returned from pretty printer
const int PRETTY_BUFFER_SIZE = 1024;

const int MAX_INDEX_SEGMENTS = 16;

// Maximum index key length
// AB: If the maximum key-size will change, don't forget dyn.h and dba.epp
// which cannot use these defines.
const ULONG MAX_KEY			= 4096;		// Maximum page size possible divide by 4 (16384 / 4)

const USHORT SQL_MATCH_1_CHAR		= '_';	/* Not translatable */
const USHORT SQL_MATCH_ANY_CHARS	= '%';	/* Not translatable */

const size_t MAX_CONTEXT_VARS	= 1000;		// Maximum number of context variables allowed for a single object

// Time precision limits and defaults for TIME/TIMESTAMP values.
// Currently they're applied to CURRENT_TIME[STAMP] expressions only.

// Should be more than 6 as per SQL spec, but we don't support more than 3 yet
const size_t MAX_TIME_PRECISION			= 3;
// Consistent with the SQL spec
const size_t DEFAULT_TIME_PRECISION		= 0;
// Should be 6 as per SQL spec
const size_t DEFAULT_TIMESTAMP_PRECISION	= 3;

const size_t MAX_ARRAY_DIMENSIONS = 16;

const size_t MAX_SORT_ITEMS = 255; // ORDER BY f1,...,f255

const int MAX_TABLE_VERSIONS = 255; // maybe this should be in ods.h.

const size_t MAX_DB_PER_TRANS = 256; // A multi-db txn can span up to 256 dbs

// relation types

enum rel_t {
	rel_persistent = 0,
	rel_view = 1,
	rel_external = 2,
	rel_virtual = 3,
	rel_global_temp_preserve = 4,
	rel_global_temp_delete = 5
};

// procedure types

enum prc_t {
	prc_legacy = 0,
	prc_selectable = 1,
	prc_executable = 2
};

// procedure parameter mechanism

enum prm_mech_t {
	prm_mech_normal = 0,
	prm_mech_type_of = 1
};

// states

enum mon_state_t {
	mon_state_idle = 0,
	mon_state_active = 1,
	mon_state_stalled = 2
};

// shutdown modes

enum shut_mode_t {
	shut_mode_online = 0,
	shut_mode_multi = 1,
	shut_mode_single = 2,
	shut_mode_full = 3
};

// backup states

enum backup_state_t {
	backup_state_unknown = -1,
	backup_state_normal = 0,
	backup_state_stalled = 1,
	backup_state_merge = 2
};

// transaction isolation levels

enum tra_iso_mode_t {
	iso_mode_consistency = 0,
	iso_mode_concurrency = 1,
	iso_mode_rc_version = 2,
	iso_mode_rc_no_version = 3
};

// statistics groups

enum stat_group_t {
	stat_database = 0,
	stat_attachment = 1,
	stat_transaction = 2,
	stat_statement = 3,
	stat_call = 4
};

const int TRIGGER_TYPE_SHIFT		= 13;
const int TRIGGER_TYPE_MASK			= (0x3 << TRIGGER_TYPE_SHIFT);

const int TRIGGER_TYPE_DML			= (0 << TRIGGER_TYPE_SHIFT);
const int TRIGGER_TYPE_DB			= (1 << TRIGGER_TYPE_SHIFT);
const int TRIGGER_TYPE_DDL			= (2 << TRIGGER_TYPE_SHIFT);

const int DB_TRIGGER_CONNECT		= 0;
const int DB_TRIGGER_DISCONNECT		= 1;
const int DB_TRIGGER_TRANS_START	= 2;
const int DB_TRIGGER_TRANS_COMMIT	= 3;
const int DB_TRIGGER_TRANS_ROLLBACK	= 4;
const int DB_TRIGGER_MAX			= 5;

static const char* const DDL_TRIGGER_ACTION_NAMES[] =
{
	NULL,
	"CREATE TABLE",
	"ALTER TABLE",
	"DROP TABLE",
	"CREATE PROCEDURE",
	"ALTER PROCEDURE",
	"DROP PROCEDURE",
	"CREATE FUNCTION",
	"ALTER FUNCTION",
	"DROP FUNCTION",
	"CREATE TRIGGER",
	"ALTER TRIGGER",
	"DROP TRIGGER",
	"", "", "",	// gap for TRIGGER_TYPE_MASK - 3 bits
	"CREATE EXCEPTION",
	"ALTER EXCEPTION",
	"DROP EXCEPTION",
	"CREATE VIEW",
	"ALTER VIEW",
	"DROP VIEW",
	"CREATE DOMAIN",
	"ALTER DOMAIN",
	"DROP DOMAIN",
	"CREATE ROLE",
	"ALTER ROLE",
	"DROP ROLE",
	"CREATE INDEX",
	"ALTER INDEX",
	"DROP INDEX",
	"CREATE SEQUENCE",
	"ALTER SEQUENCE",
	"DROP SEQUENCE",
	"CREATE USER",
	"ALTER USER",
	"DROP USER",
	"CREATE COLLATION",
	"DROP COLLATION",
	"ALTER CHARACTER SET",
	"CREATE PACKAGE",
	"ALTER PACKAGE",
	"DROP PACKAGE",
	"CREATE PACKAGE BODY",
	"DROP PACKAGE BODY"
};

const int DDL_TRIGGER_BEFORE	= 0;
const int DDL_TRIGGER_AFTER		= 1;

const int DDL_TRIGGER_CREATE_TABLE				= 1;
const int DDL_TRIGGER_ALTER_TABLE				= 2;
const int DDL_TRIGGER_DROP_TABLE				= 3;
const int DDL_TRIGGER_CREATE_PROCEDURE			= 4;
const int DDL_TRIGGER_ALTER_PROCEDURE			= 5;
const int DDL_TRIGGER_DROP_PROCEDURE			= 6;
const int DDL_TRIGGER_CREATE_FUNCTION			= 7;
const int DDL_TRIGGER_ALTER_FUNCTION			= 8;
const int DDL_TRIGGER_DROP_FUNCTION				= 9;
const int DDL_TRIGGER_CREATE_TRIGGER			= 10;
const int DDL_TRIGGER_ALTER_TRIGGER				= 11;
const int DDL_TRIGGER_DROP_TRIGGER				= 12;
// gap for TRIGGER_TYPE_MASK - 3 bits
const int DDL_TRIGGER_CREATE_EXCEPTION			= 16;
const int DDL_TRIGGER_ALTER_EXCEPTION			= 17;
const int DDL_TRIGGER_DROP_EXCEPTION			= 18;
const int DDL_TRIGGER_CREATE_VIEW				= 19;
const int DDL_TRIGGER_ALTER_VIEW				= 20;
const int DDL_TRIGGER_DROP_VIEW					= 21;
const int DDL_TRIGGER_CREATE_DOMAIN				= 22;
const int DDL_TRIGGER_ALTER_DOMAIN				= 23;
const int DDL_TRIGGER_DROP_DOMAIN				= 24;
const int DDL_TRIGGER_CREATE_ROLE				= 25;
const int DDL_TRIGGER_ALTER_ROLE				= 26;
const int DDL_TRIGGER_DROP_ROLE					= 27;
const int DDL_TRIGGER_CREATE_INDEX				= 28;
const int DDL_TRIGGER_ALTER_INDEX				= 29;
const int DDL_TRIGGER_DROP_INDEX				= 30;
const int DDL_TRIGGER_CREATE_SEQUENCE			= 31;
const int DDL_TRIGGER_ALTER_SEQUENCE			= 32;
const int DDL_TRIGGER_DROP_SEQUENCE				= 33;
const int DDL_TRIGGER_CREATE_USER				= 34;
const int DDL_TRIGGER_ALTER_USER				= 35;
const int DDL_TRIGGER_DROP_USER					= 36;
const int DDL_TRIGGER_CREATE_COLLATION			= 37;
const int DDL_TRIGGER_DROP_COLLATION			= 38;
const int DDL_TRIGGER_ALTER_CHARACTER_SET		= 39;
const int DDL_TRIGGER_CREATE_PACKAGE			= 40;
const int DDL_TRIGGER_ALTER_PACKAGE				= 41;
const int DDL_TRIGGER_DROP_PACKAGE				= 42;
const int DDL_TRIGGER_CREATE_PACKAGE_BODY		= 43;
const int DDL_TRIGGER_DROP_PACKAGE_BODY			= 44;

// that's how database trigger action types are encoded
//    (TRIGGER_TYPE_DB | type)

// that's how DDL trigger action types are encoded
//    (TRIGGER_TYPE_DDL | DDL_TRIGGER_{AFTER | BEFORE} [ | DDL_TRIGGER_??? ...])

// switches for username and password used when an username and/or password
// is specified by the client application
#define USERNAME_SWITCH "USER"
#define PASSWORD_SWITCH "PASSWORD"
#define TRUSTED_USER_SWITCH "TRUSTED_SVC"
#define TRUSTED_USER_SWITCH_LEN (sizeof(TRUSTED_USER_SWITCH) - 1)
#define TRUSTED_ROLE_SWITCH "TRUSTED_ROLE"
#define TRUSTED_ROLE_SWITCH_LEN (sizeof(TRUSTED_ROLE_SWITCH) - 1)

#endif // JRD_CONSTANTS_H