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Initial SQL/XML support: xml data type and initial set of functions.

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This commit is contained in:
Peter Eisentraut
2006-12-21 16:05:16 +00:00
parent ed1e9cd501
commit 8c1de5fb00
39 changed files with 2446 additions and 128 deletions
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27
src/backend/optimizer/util/clauses.c
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@@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/optimizer/util/clauses.c,v 1.223 2006/10/25 22:11:32 tgl Exp $
* $PostgreSQL: pgsql/src/backend/optimizer/util/clauses.c,v 1.224 2006/12/21 16:05:13 petere Exp $
*
* HISTORY
* AUTHOR DATE MAJOR EVENT
@@ -559,6 +559,8 @@ expression_returns_set_walker(Node *node, void *context)
return false;
if (IsA(node, NullIfExpr))
return false;
if (IsA(node, XmlExpr))
return false;
return expression_tree_walker(node, expression_returns_set_walker,
context);
@@ -876,6 +878,8 @@ contain_nonstrict_functions_walker(Node *node, void *context)
return true;
if (IsA(node, BooleanTest))
return true;
if (IsA(node, XmlExpr))
return true;
return expression_tree_walker(node, contain_nonstrict_functions_walker,
context);
}
@@ -3334,6 +3338,16 @@ expression_tree_walker(Node *node,
return walker(((NullTest *) node)->arg, context);
case T_BooleanTest:
return walker(((BooleanTest *) node)->arg, context);
case T_XmlExpr:
{
XmlExpr *xexpr = (XmlExpr *) node;
if (walker(xexpr->named_args, context))
return true;
if (walker(xexpr->args, context))
return true;
}
break;
case T_CoerceToDomain:
return walker(((CoerceToDomain *) node)->arg, context);
case T_TargetEntry:
@@ -3857,6 +3871,17 @@ expression_tree_mutator(Node *node,
return (Node *) newnode;
}
break;
case T_XmlExpr:
{
XmlExpr *xexpr = (XmlExpr *) node;
XmlExpr *newnode;
FLATCOPY(newnode, xexpr, XmlExpr);
MUTATE(newnode->named_args, xexpr->named_args, List *);
MUTATE(newnode->args, xexpr->args, List *);
return (Node *) newnode;
}
break;
case T_NullIfExpr:
{
NullIfExpr *expr = (NullIfExpr *) node;