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Remove 'func_tlist' from Func expression nodes, likewise 'param_tlist'

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from Param nodes, per discussion a few days ago on pghackers.  Add new
expression node type FieldSelect that implements the functionality where
it's actually needed.  Clean up some other unused fields in Func nodes
as well.
NOTE: initdb forced due to change in stored expression trees for rules.
This commit is contained in:
Tom Lane
2000-08-08 15:43:12 +00:00
parent 8fc32374be
commit 62e29fe2e7
31 changed files with 378 additions and 476 deletions
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28
src/backend/utils/adt/ruleutils.c
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@ -3,7 +3,7 @@
* out of its tuple
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/utils/adt/ruleutils.c,v 1.57 2000/07/06 23:03:37 tgl Exp $
* $Header: /cvsroot/pgsql/src/backend/utils/adt/ruleutils.c,v 1.58 2000/08/08 15:42:21 tgl Exp $
*
* This software is copyrighted by Jan Wieck - Hamburg.
*
@ -1430,6 +1430,32 @@ get_rule_expr(Node *node, deparse_context *context)
}
break;
case T_FieldSelect:
{
FieldSelect *fselect = (FieldSelect *) node;
HeapTuple typetup;
Form_pg_type typeStruct;
Oid typrelid;
char *fieldname;
/* we do NOT parenthesize the arg expression, for now */
get_rule_expr(fselect->arg, context);
typetup = SearchSysCacheTuple(TYPEOID,
ObjectIdGetDatum(exprType(fselect->arg)),
0, 0, 0);
if (!HeapTupleIsValid(typetup))
elog(ERROR, "cache lookup of type %u failed",
exprType(fselect->arg));
typeStruct = (Form_pg_type) GETSTRUCT(typetup);
typrelid = typeStruct->typrelid;
if (!OidIsValid(typrelid))
elog(ERROR, "Argument type %s of FieldSelect is not a tuple type",
NameStr(typeStruct->typname));
fieldname = get_attribute_name(typrelid, fselect->fieldnum);
appendStringInfo(buf, ".%s", quote_identifier(fieldname));
}
break;
case T_RelabelType:
{
RelabelType *relabel = (RelabelType *) node;