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Avoid including commands/dbcommands.h in so many places

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This has been done historically because of get_database_name (which
since commit cb98e6fb8f belongs in lsyscache.c/h, so let's move it
there) and get_database_oid (which is in the right place, but whose
declaration should appear in pg_database.h rather than dbcommands.h).
Clean this up.

Also, xlogreader.h and stringinfo.h are no longer needed by dbcommands.h
since commit f1fd515b39, so remove them.

Author: Álvaro Herrera <alvherre@kurilemu.de>
Reviewed-by: Bertrand Drouvot <bertranddrouvot.pg@gmail.com>
Reviewed-by: Michael Paquier <michael@paquier.xyz>
Discussion: https://postgr.es/m/202508191031.5ipojyuaswzt@alvherre.pgsql
This commit is contained in:
Álvaro Herrera
2025-08-28 12:39:04 +02:00
parent 80f1106132
commit 325fc0ab14
33 changed files with 40 additions and 57 deletions
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27
src/backend/utils/cache/lsyscache.c vendored
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@@ -26,6 +26,7 @@
#include "catalog/pg_class.h"
#include "catalog/pg_collation.h"
#include "catalog/pg_constraint.h"
#include "catalog/pg_database.h"
#include "catalog/pg_index.h"
#include "catalog/pg_language.h"
#include "catalog/pg_namespace.h"
@@ -1247,6 +1248,32 @@ get_constraint_type(Oid conoid)
return contype;
}
/* ---------- DATABASE CACHE ---------- */
/*
* get_database_name - given a database OID, look up the name
*
* Returns a palloc'd string, or NULL if no such database.
*/
char *
get_database_name(Oid dbid)
{
HeapTuple dbtuple;
char *result;
dbtuple = SearchSysCache1(DATABASEOID, ObjectIdGetDatum(dbid));
if (HeapTupleIsValid(dbtuple))
{
result = pstrdup(NameStr(((Form_pg_database) GETSTRUCT(dbtuple))->datname));
ReleaseSysCache(dbtuple);
}
else
result = NULL;
return result;
}
/* ---------- LANGUAGE CACHE ---------- */
char *