XMLATTRIBUTES() should send the attribute values through

map_sql_value_to_xml_value() instead of directly through the data type output
function.  This is per SQL standard, and consistent with XMLELEMENT().

Author: petere

src/backend/executor/execQual.c

@@ -8,7 +8,7 @@
  *
  *
  * IDENTIFICATION
- *	  $PostgreSQL: pgsql/src/backend/executor/execQual.c,v 1.245 2009/04/05 20:32:06 tgl Exp $
+ *	  $PostgreSQL: pgsql/src/backend/executor/execQual.c,v 1.246 2009/04/08 21:51:38 petere Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -4671,27 +4671,16 @@ ExecInitExpr(Expr *node, PlanState *parent)
 				XmlExprState *xstate = makeNode(XmlExprState);
 				List	   *outlist;
 				ListCell   *arg;
-				int			i;
 
 				xstate->xprstate.evalfunc = (ExprStateEvalFunc) ExecEvalXml;
-				xstate->named_outfuncs = (FmgrInfo *)
-					palloc0(list_length(xexpr->named_args) * sizeof(FmgrInfo));
 				outlist = NIL;
-				i = 0;
 				foreach(arg, xexpr->named_args)
 				{
 					Expr	   *e = (Expr *) lfirst(arg);
 					ExprState  *estate;
-					Oid			typOutFunc;
-					bool		typIsVarlena;
 
 					estate = ExecInitExpr(e, parent);
 					outlist = lappend(outlist, estate);
-
-					getTypeOutputInfo(exprType((Node *) e),
-									  &typOutFunc, &typIsVarlena);
-					fmgr_info(typOutFunc, &xstate->named_outfuncs[i]);
-					i++;
 				}
 				xstate->named_args = outlist;
 

src/backend/utils/adt/xml.c

@@ -7,7 +7,7 @@
  * Portions Copyright (c) 1996-2009, PostgreSQL Global Development Group
  * Portions Copyright (c) 1994, Regents of the University of California
  *
- * $PostgreSQL: pgsql/src/backend/utils/adt/xml.c,v 1.85 2009/03/27 18:56:57 tgl Exp $
+ * $PostgreSQL: pgsql/src/backend/utils/adt/xml.c,v 1.86 2009/04/08 21:51:38 petere Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -572,7 +572,7 @@ xmlelement(XmlExprState *xmlExpr, ExprContext *econtext)
 		if (isnull)
 			str = NULL;
 		else
-			str = OutputFunctionCall(&xmlExpr->named_outfuncs[i], value);
+			str = map_sql_value_to_xml_value(value, exprType((Node *) e->expr));
 		named_arg_strings = lappend(named_arg_strings, str);
 		i++;
 	}
@@ -609,12 +609,9 @@ xmlelement(XmlExprState *xmlExpr, ExprContext *econtext)
 		char	   *argname = strVal(lfirst(narg));
 
 		if (str)
-		{
 			xmlTextWriterWriteAttribute(writer,
 										(xmlChar *) argname,
 										(xmlChar *) str);
-			pfree(str);
-		}
 	}
 
 	foreach(arg, arg_strings)

src/include/nodes/execnodes.h

@@ -7,7 +7,7 @@
  * Portions Copyright (c) 1996-2009, PostgreSQL Global Development Group
  * Portions Copyright (c) 1994, Regents of the University of California
  *
- * $PostgreSQL: pgsql/src/include/nodes/execnodes.h,v 1.203 2009/04/02 22:39:30 tgl Exp $
+ * $PostgreSQL: pgsql/src/include/nodes/execnodes.h,v 1.204 2009/04/08 21:51:38 petere Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -847,7 +847,6 @@ typedef struct XmlExprState
 {
 	ExprState	xprstate;
 	List	   *named_args;		/* ExprStates for named arguments */
-	FmgrInfo   *named_outfuncs; /* array of output fns for named arguments */
 	List	   *args;			/* ExprStates for other arguments */
 } XmlExprState;
 

src/test/regress/expected/xml.out

@@ -173,6 +173,21 @@ SELECT xmlelement(name foo, bytea 'bar');
  <foo>626172</foo>
 (1 row)
 
+SELECT xmlelement(name foo, xmlattributes(true as bar));
+    xmlelement     
+-------------------
+ <foo bar="true"/>
+(1 row)
+
+SELECT xmlelement(name foo, xmlattributes('2009-04-09 00:24:37'::timestamp as bar));
+            xmlelement            
+----------------------------------
+ <foo bar="2009-04-09T00:24:37"/>
+(1 row)
+
+SELECT xmlelement(name foo, xmlattributes('infinity'::timestamp as bar));
+ERROR:  timestamp out of range
+DETAIL:  XML does not support infinite timestamp values.
 SELECT xmlparse(content 'abc');
  xmlparse 
 ----------

src/test/regress/expected/xml_1.out

@@ -148,6 +148,18 @@ SELECT xmlelement(name foo, bytea 'bar');
 ERROR:  unsupported XML feature
 DETAIL:  This functionality requires the server to be built with libxml support.
 HINT:  You need to rebuild PostgreSQL using --with-libxml.
+SELECT xmlelement(name foo, xmlattributes(true as bar));
+ERROR:  unsupported XML feature
+DETAIL:  This functionality requires the server to be built with libxml support.
+HINT:  You need to rebuild PostgreSQL using --with-libxml.
+SELECT xmlelement(name foo, xmlattributes('2009-04-09 00:24:37'::timestamp as bar));
+ERROR:  unsupported XML feature
+DETAIL:  This functionality requires the server to be built with libxml support.
+HINT:  You need to rebuild PostgreSQL using --with-libxml.
+SELECT xmlelement(name foo, xmlattributes('infinity'::timestamp as bar));
+ERROR:  unsupported XML feature
+DETAIL:  This functionality requires the server to be built with libxml support.
+HINT:  You need to rebuild PostgreSQL using --with-libxml.
 SELECT xmlparse(content 'abc');
 ERROR:  unsupported XML feature
 DETAIL:  This functionality requires the server to be built with libxml support.

src/test/regress/sql/xml.sql

@@ -54,6 +54,10 @@ SELECT xmlelement(name foo, bytea 'bar');
 SET xmlbinary TO hex;
 SELECT xmlelement(name foo, bytea 'bar');
 
+SELECT xmlelement(name foo, xmlattributes(true as bar));
+SELECT xmlelement(name foo, xmlattributes('2009-04-09 00:24:37'::timestamp as bar));
+SELECT xmlelement(name foo, xmlattributes('infinity'::timestamp as bar));
+
 
 SELECT xmlparse(content 'abc');
 SELECT xmlparse(content '<abc>x</abc>');