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/*-------------------------------------------------------------------------
*
* pg_collation.h
* definition of the "collation" system catalog (pg_collation)
*
*
* Portions Copyright (c) 1996-2022, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* src/include/catalog/pg_collation.h
*
* NOTES
* The Catalog.pm module reads this file and derives schema
* information.
*
*-------------------------------------------------------------------------
*/
#ifndef PG_COLLATION_H
#define PG_COLLATION_H
#include "catalog/genbki.h"
#include "catalog/pg_collation_d.h"
/* ----------------
* pg_collation definition. cpp turns this into
* typedef struct FormData_pg_collation
* ----------------
*/
CATALOG(pg_collation,3456,CollationRelationId)
{
Oid oid; /* oid */
NameData collname; /* collation name */
/* OID of namespace containing this collation */
Oid collnamespace BKI_DEFAULT(pg_catalog) BKI_LOOKUP(pg_namespace);
/* owner of collation */
Oid collowner BKI_DEFAULT(POSTGRES) BKI_LOOKUP(pg_authid);
char collprovider; /* see constants below */
bool collisdeterministic BKI_DEFAULT(t);
int32 collencoding; /* encoding for this collation; -1 = "all" */
#ifdef CATALOG_VARLEN /* variable-length fields start here */
text collcollate BKI_DEFAULT(_null_); /* LC_COLLATE setting */
text collctype BKI_DEFAULT(_null_); /* LC_CTYPE setting */
text colliculocale BKI_DEFAULT(_null_); /* ICU locale ID */
text collversion BKI_DEFAULT(_null_); /* provider-dependent
* version of collation
* data */
#endif
} FormData_pg_collation;
/* ----------------
* Form_pg_collation corresponds to a pointer to a row with
* the format of pg_collation relation.
* ----------------
*/
typedef FormData_pg_collation *Form_pg_collation;
DECLARE_TOAST(pg_collation, 6175, 6176);
DECLARE_UNIQUE_INDEX(pg_collation_name_enc_nsp_index, 3164, CollationNameEncNspIndexId, on pg_collation using btree(collname name_ops, collencoding int4_ops, collnamespace oid_ops));
DECLARE_UNIQUE_INDEX_PKEY(pg_collation_oid_index, 3085, CollationOidIndexId, on pg_collation using btree(oid oid_ops));
#ifdef EXPOSE_TO_CLIENT_CODE
#define COLLPROVIDER_DEFAULT 'd'
#define COLLPROVIDER_ICU 'i'
#define COLLPROVIDER_LIBC 'c'
static inline const char *
collprovider_name(char c)
{
switch (c)
{
case COLLPROVIDER_ICU:
return "icu";
case COLLPROVIDER_LIBC:
return "libc";
default:
return "???";
}
}
#endif /* EXPOSE_TO_CLIENT_CODE */
extern Oid CollationCreate(const char *collname, Oid collnamespace,
Oid collowner,
char collprovider,
bool collisdeterministic,
int32 collencoding,
const char *collcollate, const char *collctype,
const char *colliculocale,
const char *collversion,
bool if_not_exists,
bool quiet);
#endif /* PG_COLLATION_H */
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