/*------------------------------------------------------------------------- * * pg_class.h-- * definition of the system "relation" relation (pg_class) * along with the relation's initial contents. * * * Copyright (c) 1994, Regents of the University of California * * $Id: pg_class.h,v 1.3 1996/11/01 09:30:46 scrappy Exp $ * * NOTES * ``pg_relation'' is being replaced by ``pg_class''. currently * we are only changing the name in the catalogs but someday the * code will be changed too. -cim 2/26/90 * [it finally happens. -ay 11/5/94] * * the genbki.sh script reads this file and generates .bki * information from the DATA() statements. * *------------------------------------------------------------------------- */ #ifndef PG_RELATION_H #define PG_RELATION_H /* ---------------- * postgres.h contains the system type definintions and the * CATALOG(), BOOTSTRAP and DATA() sugar words so this file * can be read by both genbki.sh and the C compiler. * ---------------- */ /* ---------------- * pg_class definition. cpp turns this into * typedef struct FormData_pg_class * * Note: the #if 0, #endif around the BKI_BEGIN.. END block * below keeps cpp from seeing what is meant for the * genbki script: pg_relation is now called pg_class, but * only in the catalogs -cim 2/26/90 * ---------------- */ /* ---------------- * This structure is actually variable-length (the last attribute is * a POSTGRES array). Hence, sizeof(FormData_pg_class) does not * describe the fixed-length or actual size of the structure. * FormData_pg_class.relacl may not be correctly aligned, either, * if aclitem and struct varlena don't align together. Hence, * you MUST use heap_getattr() to get the relacl field. * ---------------- */ CATALOG(pg_class) BOOTSTRAP { NameData relname; Oid reltype; Oid relowner; Oid relam; int4 relpages; int4 reltuples; int4 relexpires; /* really used as a abstime, but fudge it for now*/ int4 relpreserved;/*really used as a reltime, but fudge it for now*/ bool relhasindex; bool relisshared; char relkind; char relarch; /* 'h' = heavy, 'l' = light, 'n' = no archival*/ int2 relnatts; /* relnatts is the number of user attributes this class has. There must be exactly this many instances in Class pg_attribute for this class which have attnum > 0 (= user attribute). */ int2 relsmgr; int28 relkey; /* not used */ oid8 relkeyop; /* not used */ bool relhasrules; aclitem relacl[1]; /* this is here for the catalog */ } FormData_pg_class; #define CLASS_TUPLE_SIZE \ (offsetof(FormData_pg_class,relhasrules) + sizeof(bool)) /* ---------------- * Form_pg_class corresponds to a pointer to a tuple with * the format of pg_class relation. * ---------------- */ typedef FormData_pg_class *Form_pg_class; /* ---------------- * compiler constants for pg_class * ---------------- */ /* ---------------- * Natts_pg_class_fixed is used to tell routines that insert new * pg_class tuples (as opposed to replacing old ones) that there's no * relacl field. * ---------------- */ #define Natts_pg_class_fixed 17 #define Natts_pg_class 18 #define Anum_pg_class_relname 1 #define Anum_pg_class_reltype 2 #define Anum_pg_class_relowner 3 #define Anum_pg_class_relam 4 #define Anum_pg_class_relpages 5 #define Anum_pg_class_reltuples 6 #define Anum_pg_class_relexpires 7 #define Anum_pg_class_relpreserved 8 #define Anum_pg_class_relhasindex 9 #define Anum_pg_class_relisshared 10 #define Anum_pg_class_relkind 11 #define Anum_pg_class_relarch 12 #define Anum_pg_class_relnatts 13 #define Anum_pg_class_relsmgr 14 #define Anum_pg_class_relkey 15 #define Anum_pg_class_relkeyop 16 #define Anum_pg_class_relhasrules 17 #define Anum_pg_class_relacl 18 /* ---------------- * initial contents of pg_class * ---------------- */ DATA(insert OID = 71 ( pg_type 71 PGUID 0 0 0 0 0 f f r n 16 0 - - f _null_ )); DATA(insert OID = 75 ( pg_attribute 75 PGUID 0 0 0 0 0 f f r n 16 0 - - f _null_ )); DATA(insert OID = 76 ( pg_demon 76 PGUID 0 0 0 0 0 f t r n 4 0 - - f _null_ )); DATA(insert OID = 80 ( pg_magic 80 PGUID 0 0 0 0 0 f t r n 2 0 - - f _null_ )); DATA(insert OID = 81 ( pg_proc 81 PGUID 0 0 0 0 0 f f r n 16 0 - - f _null_ )); DATA(insert OID = 82 ( pg_server 82 PGUID 0 0 0 0 0 f t r n 3 0 - - f _null_ )); DATA(insert OID = 83 ( pg_class 83 PGUID 0 0 0 0 0 f f r n 18 0 - - f _null_ )); DATA(insert OID = 86 ( pg_user 86 PGUID 0 0 0 0 0 f t r n 6 0 - - f _null_ )); DATA(insert OID = 87 ( pg_group 87 PGUID 0 0 0 0 0 f t s n 3 0 - - f _null_ )); DATA(insert OID = 88 ( pg_database 88 PGUID 0 0 0 0 0 f t r n 3 0 - - f _null_ )); DATA(insert OID = 89 ( pg_defaults 89 PGUID 0 0 0 0 0 f t r n 2 0 - - f _null_ )); DATA(insert OID = 90 ( pg_variable 90 PGUID 0 0 0 0 0 f t s n 2 0 - - f _null_ )); DATA(insert OID = 99 ( pg_log 99 PGUID 0 0 0 0 0 f t s n 1 0 - - f _null_ )); DATA(insert OID = 100 ( pg_time 100 PGUID 0 0 0 0 0 f t s n 1 0 - - f _null_ )); DATA(insert OID = 101 ( pg_hosts 101 PGUID 0 0 0 0 0 f t s n 3 0 - - f _null_ )); #define RelOid_pg_type 71 #define RelOid_pg_demon 76 #define RelOid_pg_attribute 75 #define RelOid_pg_magic 80 #define RelOid_pg_proc 81 #define RelOid_pg_server 82 #define RelOid_pg_class 83 #define RelOid_pg_user 86 #define RelOid_pg_group 87 #define RelOid_pg_database 88 #define RelOid_pg_defaults 89 #define RelOid_pg_variable 90 #define RelOid_pg_log 99 #define RelOid_pg_time 100 #define RelOid_pg_hosts 101 #define MAX_SYSTEM_RELOID 101 #define RELKIND_INDEX 'i' /* secondary index */ #define RELKIND_RELATION 'r' /* cataloged heap */ #define RELKIND_SPECIAL 's' /* special (non-heap) */ #define RELKIND_UNCATALOGED 'u' /* temporary heap */ #endif /* PG_RELATION_H */