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Determine the set of constraints applied to a domain at executor

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startup, not in the parser; this allows ALTER DOMAIN to work correctly
with domain constraint operations stored in rules.  Rod Taylor;
code review by Tom Lane.
This commit is contained in:
Tom Lane
2003-02-03 21:15:45 +00:00
parent 464598b637
commit 3752e85bad
24 changed files with 524 additions and 339 deletions
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29
src/backend/utils/cache/lsyscache.c vendored
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@ -7,7 +7,7 @@
* Portions Copyright (c) 1994, Regents of the University of California
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/utils/cache/lsyscache.c,v 1.89 2003/01/15 19:35:44 tgl Exp $
* $Header: /cvsroot/pgsql/src/backend/utils/cache/lsyscache.c,v 1.90 2003/02/03 21:15:44 tgl Exp $
*
* NOTES
* Eventually, the index information should go through here, too.
@ -1012,6 +1012,33 @@ get_typstorage(Oid typid)
return 'p';
}
/*
* get_typtypmod
*
* Given the type OID, return the typtypmod field (domain's typmod
* for base type)
*/
int32
get_typtypmod(Oid typid)
{
HeapTuple tp;
tp = SearchSysCache(TYPEOID,
ObjectIdGetDatum(typid),
0, 0, 0);
if (HeapTupleIsValid(tp))
{
Form_pg_type typtup = (Form_pg_type) GETSTRUCT(tp);
int32 result;
result = typtup->typtypmod;
ReleaseSysCache(tp);
return result;
}
else
return -1;
}
/*
* get_typdefault
* Given a type OID, return the type's default value, if any.