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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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44
src/backend/nodes/copyfuncs.c
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@ -19,7 +19,7 @@
* Portions Copyright (c) 1994, Regents of the University of California
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/nodes/copyfuncs.c,v 1.118 2000/07/22 04:22:46 tgl Exp $
* $Header: /cvsroot/pgsql/src/backend/nodes/copyfuncs.c,v 1.119 2000/08/08 15:41:23 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -717,14 +717,8 @@ _copyOper(Oper *from)
newnode->opno = from->opno;
newnode->opid = from->opid;
newnode->opresulttype = from->opresulttype;
newnode->opsize = from->opsize;
/*
* NOTE: shall we copy the cache structure or just the pointer ?
* Alternatively we can set 'op_fcache' to NULL, in which case the
* executor will initialize it when it needs it...
*/
newnode->op_fcache = from->op_fcache;
/* Do not copy the run-time state, if any */
newnode->op_fcache = NULL;
return newnode;
}
@ -797,7 +791,6 @@ _copyParam(Param *from)
if (from->paramname != NULL)
newnode->paramname = pstrdup(from->paramname);
newnode->paramtype = from->paramtype;
Node_Copy(from, newnode, param_tlist);
return newnode;
}
@ -817,11 +810,8 @@ _copyFunc(Func *from)
*/
newnode->funcid = from->funcid;
newnode->functype = from->functype;
newnode->funcisindex = from->funcisindex;
newnode->funcsize = from->funcsize;
newnode->func_fcache = from->func_fcache;
Node_Copy(from, newnode, func_tlist);
Node_Copy(from, newnode, func_planlist);
/* Do not copy the run-time state, if any */
newnode->func_fcache = NULL;
return newnode;
}
@ -872,6 +862,27 @@ _copySubLink(SubLink *from)
return newnode;
}
/* ----------------
* _copyFieldSelect
* ----------------
*/
static FieldSelect *
_copyFieldSelect(FieldSelect *from)
{
FieldSelect *newnode = makeNode(FieldSelect);
/* ----------------
* copy remainder of node
* ----------------
*/
Node_Copy(from, newnode, arg);
newnode->fieldnum = from->fieldnum;
newnode->resulttype = from->resulttype;
newnode->resulttypmod = from->resulttypmod;
return newnode;
}
/* ----------------
* _copyRelabelType
* ----------------
@ -1710,6 +1721,9 @@ copyObject(void *from)
case T_Iter:
retval = _copyIter(from);
break;
case T_FieldSelect:
retval = _copyFieldSelect(from);
break;
case T_RelabelType:
retval = _copyRelabelType(from);
break;