2.11BSD/ingres/source/ingres.h
#
/*
** COPYRIGHT
**
** The Regents of the University of California
**
** 1977
**
** This program material is the property of the
** Regents of the University of California and
** may not be reproduced or disclosed without
** the prior written permission of the owner.
*/
#
/*
** conditional compilation flags
**
** Some of these may be commented out to set them to "off".
** The comment should be removed to set them to "on".
*/
/* access methods compilation flags */
/* disable timing information
# define xATM /* timing information */
# define xATR1 /* trace info, level 1 */
# define xATR2 /* trace info, level 2, implies xTR1 */
# define xATR3 /* trace info, level 3, implies xTR1 & xTR2 */
/* decomposition compilation flags */
/* disable timing information
# define xDTM /* timing information */
# define xDTR1 /* trace info, level 1 */
# define xDTR2 /* trace info, level 2, implies xTR1 */
# define xDTR3 /* trace info, level 3, implies xTR1 & xTR2 */
/* EQUEL compilation flags */
/* disable timing information
# define xETM /* timing information */
# define xETR1 /* trace info, level 1 */
# define xETR2 /* trace info, level 2, implies xTR1 */
# define xETR3 /* trace info, level 3, implies xTR1 & xTR2 */
/* monitor compilation flags */
/* disable timing information
# define xMTM /* timing information */
# define xMTR1 /* trace info, level 1 */
# define xMTR2 /* trace info, level 2, implies xTR1 */
# define xMTR3 /* trace info, level 3, implies xTR1 & xTR2 */
/* OVQP compilatiion flags */
/* disable timing information
# define xOTM /* timing information */
# define xOTR1 /* trace info, level 1 */
# define xOTR2 /* trace info, level 2, implies xTR1 */
# define xOTR3 /* trace info, level 3, implies xTR1 & xTR2 */
/* parser compilation flags */
/* disable timing information
# define xPTM /* timing information */
# define xPTR1 /* trace info, level 1 */
# define xPTR2 /* trace info, level 2, implies xTR1 */
# define xPTR3 /* trace info, level 3, implies xTR1 & xTR2 */
/* qrymod compilation flags */
/* disable timing information
# define xQTM /* timing information */
# define xQTR1 /* trace info, level 1 */
# define xQTR2 /* trace info, level 2, implies xTR1 */
# define xQTR3 /* trace info, level 3, implies xTR1 & xTR2 */
/* scanner compilation flags */
/* disable timing information
# define xSTM /* timing information */
# define xSTR1 /* trace info, level 1 */
# define xSTR2 /* trace info, level 2, implies xTR1 */
# define xSTR3 /* trace info, level 3, implies xTR1 & xTR2 */
/* DBU compilation flags */
/* disable timing information
# define xZTM /* timing information */
# define xZTR1 /* trace info, level 1 */
# define xZTR2 /* trace info, level 2, implies xTR1 */
# define xZTR3 /* trace info, level 3, implies xTR1 & xTR2 */
/* support compilation flags */
/* disable timing information
# define xTTM /* timing information */
# define xTTR1 /* trace info, level 1 */
# define xTTR2 /* trace info, level 2, implies xTR1 */
# define xTTR3 /* trace info, level 3, implies xTR1 & xTR2 */
/*
** INGRES manifest constants
**
** These constants are manifest to the operation of the entire
** system. If anything
** is changed part or all of the system will stop working.
** The values have been carefully chosen and are not intended
** to be modifiable by users.
*/
# define MAXDOM 50 /* maximum number+1 of domains in a relation */
# define MAXTUP 498 /* max size (in bytes) of a tuple */
# define MAXNAME 12 /* max size of a name (in bytes) */
# define MAXVAR 10 /* max # of variables */
# define MAXKEYS 6 /* max # of keys in secondary index */
# define MAXAGG 50 /* max number of aggs in a qry */
# define MAXPARMS MAXDOM * 2 + 20 /* max number of parameters
** to the DBU controller
** (allows for 2 per domain for
** create which is the worst case
*/
# define STACKSIZ 20 /* max depth for arith. expr. stacks */
# define I1MASK 0377 /* mask out sign extension that occurs
** when a c1 or i1 field is converted
** to an i2 field.
*/
# define TRUE 1 /* logical one, true, yes, ok, etc.*/
# define FALSE 0 /* logical zero, false, no, nop, etc. */
# ifndef NULL
# define NULL 0
# endif
# define i_1 char
# define i_2 int
# define i_4 long
# define c_1 char
# define c_2 char
# define c_12 char
/*
** RELATION relation struct
**
** The RELATION relation contains one tuple for each relation
** in the database. This relation contains information which
** describes how each relation is actually stored in the
** database, who the owner is, information about its size,
** assorted operation information, etc.
*/
# define RELID 1 /* domain for setkey */
# define RELOWNER 2
/*
** Note carefully!
**
** Do not change this struct without changing the exact copy
** of it occuring at the beginning of the descriptor struct!
*/
struct relation
{
c_12 relid[MAXNAME]; /* relation name */
c_2 relowner[2]; /* code of relation owner */
i_1 relspec; /* storage mode of relation */
/* M_HEAP unsorted paged heap */
/* -M_HEAP compressed heap */
/* M_ISAM isam */
/* -M_ISAM compressed isam */
/* M_HASH hashed */
/* -M_HASH compressed hash */
i_1 relindxd; /* -1 rel is an index, 0 not indexed, 1 indexed */
i_2 relstat; /* relation status bits */
i_4 relsave; /*unix time until which relation is saved*/
i_4 reltups; /*number of tuples in relation */
i_2 relatts; /*number of attributes in relation */
i_2 relwid; /*width (in bytes) of relation */
i_4 relprim; /*no. of primary pages in relation*/
i_4 relspare; /*not used yet*/
};
/*
** ATTRIBUTE relation struct
**
** The ATTRIBUTE relation contains one tuple for each domain
** of each relation in the database. This relation describes
** the position of each domain in the tuple, its format,
** its length, and whether or not it is used in part of the key.
*/
# define ATTRELID 1
# define ATTOWNER 2
# define ATTNAME 3
# define ATTID 4
struct attribute
{
c_12 attrelid[MAXNAME]; /*relation name of which this is an attr */
c_2 attowner[2]; /* code of relation owner */
c_12 attname[MAXNAME]; /*alias for this domain*/
i_2 attid; /*domain number (from 1 to relatts) */
i_2 attoff; /*offset in tuple (no. of bytes*/
i_1 attfrmt; /* INT, FLOAT, CHAR (in symbol.h) */
i_1 attfrml; /* unsigned integer no of bytes */
i_1 attxtra; /* flag indicating whether this dom is part of a key */
};
/*
** DESCRIPTOR struct
**
** The DESCRIPTOR struct is initialized by OPENR to describe any
** open relation. The first part of the descriptor is the tuple
** from the RELATION relation. The remainder contains some magic
** numbers and a template initialized from the ATTRIBUTE relation.
*/
struct descriptor
{
c_12 relid[MAXNAME]; /* relation name */
c_2 relowner[2]; /* code of relation owner */
i_1 relspec; /* storage mode of relation */
/* M_HEAP unsorted paged heap */
/* -M_HEAP compressed heap */
/* M_ISAM isam */
/* -M_ISAM compressed isam */
/* M_HASH hashed */
/* -M_HASH compressed hash */
i_1 relindxd; /* -1 rel is an index, 0 not indexed, 1 indexed */
i_2 relstat; /* relation status bits */
i_4 relsave; /*unix time until which relation is saved*/
i_4 reltups; /*number of tuples in relation */
i_2 relatts; /*number of attributes in relation */
i_2 relwid; /*width (in bytes) of relation */
i_4 relprim; /*no. of primary pages in relation*/
i_4 relspare; /*not used yet*/
/*the above part of the descriptor struct is identical
to the relation struct and the information in this
part of the struct is read directly from the
relation tuple by openr. the rest of the descriptor
struct is calculated by openr.
*/
i_2 relfp; /*filep for relation , if open */
i_2 relopn; /*indicates if relation is really open*/
i_4 reltid; /*when relation is open, this indicates
the tid in the relation relation for
this relation */
i_4 reladds; /*no. of additions of tuples during this open*/
i_2 reloff[MAXDOM]; /*reloff[i] is offset to domain i */
c_1 relfrmt[MAXDOM]; /* format of domain i
** INT, FLOAT, or CHAR */
c_1 relfrml[MAXDOM]; /* relfrml[i] is an unsigned integer
which indicates length
in bytes of domain
*/
c_1 relxtra[MAXDOM]; /*relxtra[i] is none zero if domain i is
** a key domain for the relation */
c_1 relgiven[MAXDOM]; /*cleared by openr and set before
call to find to indicate value of this
domain has been supplied in the key*/
};
# define NOKEY 1 /* scan entire relation */
# define EXACTKEY 2
# define LRANGEKEY 3 /* low range key */
# define FULLKEY 4 /* forces full key comparison */
# define HRANGEKEY 5 /* high range key */
/*
** tuple id struct
*/
struct tup_id
{
char pg1, pg0;
char line_id, pg2;
};