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ba0faf81c6
Now that commit 62f34097c attached BKI_LOOKUP annotation to all the
namespace and role OID columns in the catalogs, there's no real reason
to have the magic PGNSP and PGUID symbols. Get rid of them in favor
of implementing those lookups according to genbki.pl's normal pattern.
This means that in the catalog headers, BKI_DEFAULT(PGNSP) becomes
BKI_DEFAULT(pg_catalog), which seems a lot more transparent.
BKI_DEFAULT(PGUID) becomes BKI_DEFAULT(POSTGRES), which is perhaps
less so; but you can look into pg_authid.dat to discover that
POSTGRES is the nonce name for the bootstrap superuser.
This change also means that if we ever need cross-references in the
initial catalog data to any of the other built-in roles besides
POSTGRES, or to some other built-in schema besides pg_catalog,
we can just do it.
No catversion bump here, as there's no actual change in the contents
of postgres.bki.
Discussion: https://postgr.es/m/3240355.1612129197@sss.pgh.pa.us
90 lines
3.2 KiB
C
90 lines
3.2 KiB
C
/*-------------------------------------------------------------------------
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*
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* pg_opclass.h
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* definition of the "operator class" system catalog (pg_opclass)
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*
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* The primary key for this table is <opcmethod, opcname, opcnamespace> ---
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* that is, there is a row for each valid combination of opclass name and
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* index access method type. This row specifies the expected input data type
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* for the opclass (the type of the heap column, or the expression output type
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* in the case of an index expression). Note that types binary-coercible to
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* the specified type will be accepted too.
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*
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* For a given <opcmethod, opcintype> pair, there can be at most one row that
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* has opcdefault = true; this row is the default opclass for such data in
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* such an index. (This is not currently enforced by an index, because we
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* don't support partial indexes on system catalogs.)
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*
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* Normally opckeytype = InvalidOid (zero), indicating that the data stored
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* in the index is the same as the data in the indexed column. If opckeytype
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* is nonzero then it indicates that a conversion step is needed to produce
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* the stored index data, which will be of type opckeytype (which might be
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* the same or different from the input datatype). Performing such a
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* conversion is the responsibility of the index access method --- not all
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* AMs support this.
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*
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*
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* Portions Copyright (c) 1996-2021, 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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* src/include/catalog/pg_opclass.h
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*
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* NOTES
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* The Catalog.pm module reads this file and derives schema
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* information.
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*
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*-------------------------------------------------------------------------
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*/
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#ifndef PG_OPCLASS_H
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#define PG_OPCLASS_H
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#include "catalog/genbki.h"
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#include "catalog/pg_opclass_d.h"
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/* ----------------
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* pg_opclass definition. cpp turns this into
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* typedef struct FormData_pg_opclass
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* ----------------
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*/
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CATALOG(pg_opclass,2616,OperatorClassRelationId)
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{
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Oid oid; /* oid */
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/* index access method opclass is for */
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Oid opcmethod BKI_LOOKUP(pg_am);
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/* name of this opclass */
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NameData opcname;
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/* namespace of this opclass */
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Oid opcnamespace BKI_DEFAULT(pg_catalog) BKI_LOOKUP(pg_namespace);
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/* opclass owner */
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Oid opcowner BKI_DEFAULT(POSTGRES) BKI_LOOKUP(pg_authid);
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/* containing operator family */
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Oid opcfamily BKI_LOOKUP(pg_opfamily);
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/* type of data indexed by opclass */
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Oid opcintype BKI_LOOKUP(pg_type);
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/* T if opclass is default for opcintype */
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bool opcdefault BKI_DEFAULT(t);
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/* type of data in index, or InvalidOid if same as input column type */
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Oid opckeytype BKI_DEFAULT(0) BKI_LOOKUP_OPT(pg_type);
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} FormData_pg_opclass;
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/* ----------------
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* Form_pg_opclass corresponds to a pointer to a tuple with
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* the format of pg_opclass relation.
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* ----------------
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*/
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typedef FormData_pg_opclass *Form_pg_opclass;
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DECLARE_UNIQUE_INDEX(pg_opclass_am_name_nsp_index, 2686, on pg_opclass using btree(opcmethod oid_ops, opcname name_ops, opcnamespace oid_ops));
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#define OpclassAmNameNspIndexId 2686
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DECLARE_UNIQUE_INDEX_PKEY(pg_opclass_oid_index, 2687, on pg_opclass using btree(oid oid_ops));
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#define OpclassOidIndexId 2687
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#endif /* PG_OPCLASS_H */
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