/*------------------------------------------------------------------------- * * pg_class.h * definition of the system "relation" relation (pg_class) * along with the relation's initial contents. * * * Portions Copyright (c) 1996-2001, PostgreSQL Global Development Group * Portions Copyright (c) 1994, Regents of the University of California * * $Id: pg_class.h,v 1.62 2002/03/19 02:18:22 momjian Exp $ * * NOTES * the genbki.sh script reads this file and generates .bki * information from the DATA() statements. * *------------------------------------------------------------------------- */ #ifndef PG_CLASS_H #define PG_CLASS_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 * ---------------- */ /* ---------------- * This structure is actually variable-length (the last attribute is * a POSTGRES array). Hence, sizeof(FormData_pg_class) does not * necessarily match the actual length of the structure. Furthermore * relacl may be a NULL field. Hence, you MUST use heap_getattr() * to get the relacl field ... and don't forget to check isNull. * ---------------- */ CATALOG(pg_class) BOOTSTRAP { NameData relname; /* class name */ Oid reltype; /* OID of associated entry in pg_type */ int4 relowner; /* class owner */ Oid relam; /* index access method; 0 if not an index */ Oid relfilenode; /* identifier of physical storage file */ int4 relpages; /* # of blocks (not always up-to-date) */ float4 reltuples; /* # of tuples (not always up-to-date) */ Oid reltoastrelid; /* OID of toast table; 0 if none */ Oid reltoastidxid; /* if toast table, OID of chunk_id index */ bool relhasindex; /* T if has (or has had) any indexes */ bool relisshared; /* T if shared across databases */ char relkind; /* see RELKIND_xxx constants below */ int2 relnatts; /* number of user attributes */ /* * Class pg_attribute must contain exactly "relnatts" user attributes * (with attnums ranging from 1 to relnatts) for this class. It may * also contain entries with negative attnums for system attributes. */ int2 relchecks; /* # of CHECK constraints for class */ int2 reltriggers; /* # of TRIGGERs */ int2 relukeys; /* # of Unique keys (not used) */ int2 relfkeys; /* # of FOREIGN KEYs (not used) */ int2 relrefs; /* # of references to this rel (not used) */ bool relhasoids; /* T if we generate OIDs for rows of rel */ bool relhaspkey; /* has PRIMARY KEY index */ bool relhasrules; /* has associated rules */ bool relhassubclass; /* has derived classes */ /* * relacl may or may not be present, see note above! */ aclitem relacl[1]; /* we declare this just for the catalog */ } FormData_pg_class; /* Size of fixed part of pg_class tuples, not counting relacl or padding */ #define CLASS_TUPLE_SIZE \ (offsetof(FormData_pg_class,relhassubclass) + 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. This is a kluge. * ---------------- */ #define Natts_pg_class_fixed 22 #define Natts_pg_class 23 #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_relfilenode 5 #define Anum_pg_class_relpages 6 #define Anum_pg_class_reltuples 7 #define Anum_pg_class_reltoastrelid 8 #define Anum_pg_class_reltoastidxid 9 #define Anum_pg_class_relhasindex 10 #define Anum_pg_class_relisshared 11 #define Anum_pg_class_relkind 12 #define Anum_pg_class_relnatts 13 #define Anum_pg_class_relchecks 14 #define Anum_pg_class_reltriggers 15 #define Anum_pg_class_relukeys 16 #define Anum_pg_class_relfkeys 17 #define Anum_pg_class_relrefs 18 #define Anum_pg_class_relhasoids 19 #define Anum_pg_class_relhaspkey 20 #define Anum_pg_class_relhasrules 21 #define Anum_pg_class_relhassubclass 22 #define Anum_pg_class_relacl 23 /* ---------------- * initial contents of pg_class * * NOTE: only "bootstrapped" relations need to be declared here. * ---------------- */ DATA(insert OID = 1247 ( pg_type 71 PGUID 0 1247 0 0 0 0 f f r 22 0 0 0 0 0 t f f f _null_ )); DESCR(""); DATA(insert OID = 1249 ( pg_attribute 75 PGUID 0 1249 0 0 0 0 f f r 15 0 0 0 0 0 f f f f _null_ )); DESCR(""); DATA(insert OID = 1255 ( pg_proc 81 PGUID 0 1255 0 0 0 0 f f r 18 0 0 0 0 0 t f f f _null_ )); DESCR(""); DATA(insert OID = 1259 ( pg_class 83 PGUID 0 1259 0 0 0 0 f f r 23 0 0 0 0 0 t f f f _null_ )); DESCR(""); DATA(insert OID = 1260 ( pg_shadow 86 PGUID 0 1260 0 0 0 0 f t r 9 0 0 0 0 0 f f f f _null_ )); DESCR(""); DATA(insert OID = 1261 ( pg_group 87 PGUID 0 1261 0 0 0 0 f t r 3 0 0 0 0 0 f f f f _null_ )); DESCR(""); DATA(insert OID = 1262 ( pg_database 88 PGUID 0 1262 0 0 0 0 f t r 10 0 0 0 0 0 t f f f _null_ )); DESCR(""); DATA(insert OID = 376 ( pg_xactlock 0 PGUID 0 0 0 0 0 0 f t s 1 0 0 0 0 0 f f f f _null_ )); DESCR(""); #define RelOid_pg_type 1247 #define RelOid_pg_attribute 1249 #define RelOid_pg_proc 1255 #define RelOid_pg_class 1259 #define RelOid_pg_shadow 1260 #define RelOid_pg_group 1261 #define RelOid_pg_database 1262 /* Xact lock pseudo-table */ #define XactLockTableId 376 #define RELKIND_INDEX 'i' /* secondary index */ #define RELKIND_RELATION 'r' /* ordinary cataloged heap */ #define RELKIND_SPECIAL 's' /* special (non-heap) */ #define RELKIND_SEQUENCE 'S' /* SEQUENCE relation */ #define RELKIND_UNCATALOGED 'u' /* temporary heap */ #define RELKIND_TOASTVALUE 't' /* moved off huge values */ #define RELKIND_VIEW 'v' /* view */ #endif /* PG_CLASS_H */