153 lines
5.6 KiB
C
153 lines
5.6 KiB
C
/*-------------------------------------------------------------------------
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*
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* pg_class.h
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* definition of the system "relation" relation (pg_class)
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* along with the relation's initial contents.
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*
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*
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* Portions Copyright (c) 1996-2007, PostgreSQL Global Development Group
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* Portions Copyright (c) 1994, Regents of the University of California
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*
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* $PostgreSQL: pgsql/src/include/catalog/pg_class.h,v 1.101 2007/05/11 17:57:13 tgl Exp $
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*
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* NOTES
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* the genbki.sh script reads this file and generates .bki
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* information from the DATA() statements.
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*
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*-------------------------------------------------------------------------
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*/
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#ifndef PG_CLASS_H
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#define PG_CLASS_H
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/* ----------------
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* postgres.h contains the system type definitions and the
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* CATALOG(), BKI_BOOTSTRAP and DATA() sugar words so this file
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* can be read by both genbki.sh and the C compiler.
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* ----------------
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*/
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/* ----------------
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* pg_class definition. cpp turns this into
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* typedef struct FormData_pg_class
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* ----------------
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*/
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#define RelationRelationId 1259
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CATALOG(pg_class,1259) BKI_BOOTSTRAP
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{
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NameData relname; /* class name */
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Oid relnamespace; /* OID of namespace containing this class */
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Oid reltype; /* OID of associated entry in pg_type */
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Oid relowner; /* class owner */
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Oid relam; /* index access method; 0 if not an index */
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Oid relfilenode; /* identifier of physical storage file */
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Oid reltablespace; /* identifier of table space for relation */
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int4 relpages; /* # of blocks (not always up-to-date) */
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float4 reltuples; /* # of tuples (not always up-to-date) */
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Oid reltoastrelid; /* OID of toast table; 0 if none */
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Oid reltoastidxid; /* if toast table, OID of chunk_id index */
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bool relhasindex; /* T if has (or has had) any indexes */
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bool relisshared; /* T if shared across databases */
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char relkind; /* see RELKIND_xxx constants below */
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int2 relnatts; /* number of user attributes */
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/*
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* Class pg_attribute must contain exactly "relnatts" user attributes
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* (with attnums ranging from 1 to relnatts) for this class. It may also
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* contain entries with negative attnums for system attributes.
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*/
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int2 relchecks; /* # of CHECK constraints for class */
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int2 reltriggers; /* # of TRIGGERs */
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int2 relukeys; /* # of Unique keys (not used) */
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int2 relfkeys; /* # of FOREIGN KEYs (not used) */
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int2 relrefs; /* # of references to this rel (not used) */
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bool relhasoids; /* T if we generate OIDs for rows of rel */
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bool relhaspkey; /* has PRIMARY KEY index */
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bool relhasrules; /* has associated rules */
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bool relhassubclass; /* has derived classes */
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TransactionId relfrozenxid; /* all Xids < this are frozen in this rel */
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/*
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* VARIABLE LENGTH FIELDS start here. These fields may be NULL, too.
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*
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* NOTE: these fields are not present in a relcache entry's rd_rel field.
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*/
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aclitem relacl[1]; /* access permissions */
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text reloptions[1]; /* access-method-specific options */
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} FormData_pg_class;
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/* Size of fixed part of pg_class tuples, not counting var-length fields */
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#define CLASS_TUPLE_SIZE \
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(offsetof(FormData_pg_class,relfrozenxid) + sizeof(TransactionId))
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/* ----------------
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* Form_pg_class corresponds to a pointer to a tuple with
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* the format of pg_class relation.
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* ----------------
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*/
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typedef FormData_pg_class *Form_pg_class;
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/* ----------------
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* compiler constants for pg_class
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* ----------------
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*/
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#define Natts_pg_class 27
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#define Anum_pg_class_relname 1
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#define Anum_pg_class_relnamespace 2
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#define Anum_pg_class_reltype 3
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#define Anum_pg_class_relowner 4
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#define Anum_pg_class_relam 5
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#define Anum_pg_class_relfilenode 6
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#define Anum_pg_class_reltablespace 7
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#define Anum_pg_class_relpages 8
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#define Anum_pg_class_reltuples 9
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#define Anum_pg_class_reltoastrelid 10
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#define Anum_pg_class_reltoastidxid 11
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#define Anum_pg_class_relhasindex 12
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#define Anum_pg_class_relisshared 13
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#define Anum_pg_class_relkind 14
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#define Anum_pg_class_relnatts 15
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#define Anum_pg_class_relchecks 16
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#define Anum_pg_class_reltriggers 17
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#define Anum_pg_class_relukeys 18
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#define Anum_pg_class_relfkeys 19
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#define Anum_pg_class_relrefs 20
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#define Anum_pg_class_relhasoids 21
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#define Anum_pg_class_relhaspkey 22
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#define Anum_pg_class_relhasrules 23
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#define Anum_pg_class_relhassubclass 24
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#define Anum_pg_class_relfrozenxid 25
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#define Anum_pg_class_relacl 26
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#define Anum_pg_class_reloptions 27
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/* ----------------
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* initial contents of pg_class
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*
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* NOTE: only "bootstrapped" relations need to be declared here. Be sure that
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* the OIDs listed here match those given in their CATALOG macros, and that
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* the relnatts values are correct.
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* ----------------
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*/
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/* Note: "3" in the relfrozenxid column stands for FirstNormalTransactionId */
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DATA(insert OID = 1247 ( pg_type PGNSP 71 PGUID 0 1247 0 0 0 0 0 f f r 26 0 0 0 0 0 t f f f 3 _null_ _null_ ));
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DESCR("");
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DATA(insert OID = 1249 ( pg_attribute PGNSP 75 PGUID 0 1249 0 0 0 0 0 f f r 17 0 0 0 0 0 f f f f 3 _null_ _null_ ));
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DESCR("");
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DATA(insert OID = 1255 ( pg_proc PGNSP 81 PGUID 0 1255 0 0 0 0 0 f f r 20 0 0 0 0 0 t f f f 3 _null_ _null_ ));
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DESCR("");
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DATA(insert OID = 1259 ( pg_class PGNSP 83 PGUID 0 1259 0 0 0 0 0 f f r 27 0 0 0 0 0 t f f f 3 _null_ _null_ ));
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DESCR("");
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#define RELKIND_INDEX 'i' /* secondary index */
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#define RELKIND_RELATION 'r' /* ordinary cataloged heap */
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#define RELKIND_SEQUENCE 'S' /* SEQUENCE relation */
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#define RELKIND_UNCATALOGED 'u' /* temporary heap */
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#define RELKIND_TOASTVALUE 't' /* moved off huge values */
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#define RELKIND_VIEW 'v' /* view */
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#define RELKIND_COMPOSITE_TYPE 'c' /* composite type */
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#endif /* PG_CLASS_H */
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