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7c13781ee7
indexes. Extend the macros in include/catalog/*.h to carry the info about hand-assigned OIDs, and adjust the genbki script and bootstrap code to make the relations actually get those OIDs. Remove the small number of RelOid_pg_foo macros that we had in favor of a complete set named like the catname.h and indexing.h macros. Next phase will get rid of internal use of names for looking up catalogs and indexes; but this completes the changes forcing an initdb, so it looks like a good place to commit. Along the way, I made the shared relations (pg_database etc) not be 'bootstrap' relations any more, so as to reduce the number of hardwired entries and simplify changing those relations in future. I'm not sure whether they ever really needed to be handled as bootstrap relations, but it seems to work fine to not do so now.
89 lines
3.1 KiB
C
89 lines
3.1 KiB
C
/*-------------------------------------------------------------------------
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*
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* pg_description.h
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* definition of the system "description" relation (pg_description)
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*
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* NOTE: an object is identified by the OID of the row that primarily
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* defines the object, plus the OID of the table that that row appears in.
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* For example, a function is identified by the OID of its pg_proc row
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* plus the pg_class OID of table pg_proc. This allows unique identification
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* of objects without assuming that OIDs are unique across tables.
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*
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* Since attributes don't have OIDs of their own, we identify an attribute
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* comment by the objoid+classoid of its parent table, plus an "objsubid"
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* giving the attribute column number. "objsubid" must be zero in a comment
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* for a table itself, so that it is distinct from any column comment.
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* Currently, objsubid is unused and zero for all other kinds of objects,
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* but perhaps it might be useful someday to associate comments with
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* constituent elements of other kinds of objects (arguments of a function,
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* for example).
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*
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*
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* Portions Copyright (c) 1996-2005, 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_description.h,v 1.23 2005/04/14 01:38:20 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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* XXX do NOT break up DATA() statements into multiple lines!
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* the scripts are not as smart as you might think...
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*
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*-------------------------------------------------------------------------
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*/
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#ifndef PG_DESCRIPTION_H
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#define PG_DESCRIPTION_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_description definition. cpp turns this into
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* typedef struct FormData_pg_description
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* ----------------
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*/
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#define DescriptionRelationId 2609
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CATALOG(pg_description,2609) BKI_WITHOUT_OIDS
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{
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Oid objoid; /* OID of object itself */
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Oid classoid; /* OID of table containing object */
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int4 objsubid; /* column number, or 0 if not used */
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text description; /* description of object */
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} FormData_pg_description;
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/* ----------------
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* Form_pg_description corresponds to a pointer to a tuple with
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* the format of pg_description relation.
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* ----------------
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*/
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typedef FormData_pg_description *Form_pg_description;
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/* ----------------
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* compiler constants for pg_description
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* ----------------
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*/
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#define Natts_pg_description 4
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#define Anum_pg_description_objoid 1
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#define Anum_pg_description_classoid 2
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#define Anum_pg_description_objsubid 3
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#define Anum_pg_description_description 4
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/* ----------------
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* initial contents of pg_description
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* ----------------
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*/
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/*
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* Because the contents of this table are taken from the other *.h files,
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* there is no initialization here. The initial contents are extracted
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* by genbki.sh and loaded during initdb.
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*/
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#endif /* PG_DESCRIPTION_H */
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