From 8a5849b7ff24c637a1140c26fc171e45c9142005 Mon Sep 17 00:00:00 2001
From: Tom Lane <tgl@sss.pgh.pa.us>
Date: Sat, 10 Oct 2009 01:43:50 +0000
Subject: Split the processing of INSERT/UPDATE/DELETE operations out of
 execMain.c. They are now handled by a new plan node type called ModifyTable,
 which is placed at the top of the plan tree.  In itself this change doesn't
 do much, except perhaps make the handling of RETURNING lists and inherited
 UPDATEs a tad less klugy.  But it is necessary preparation for the intended
 extension of allowing RETURNING queries inside WITH.

Marko Tiikkaja
---
 src/include/nodes/execnodes.h | 24 +++++++++++++++++-------
 1 file changed, 17 insertions(+), 7 deletions(-)

(limited to 'src/include/nodes/execnodes.h')

diff --git a/src/include/nodes/execnodes.h b/src/include/nodes/execnodes.h
index ea66e109c1..264ef741da 100644
--- a/src/include/nodes/execnodes.h
+++ b/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 1.208 2009/09/27 20:09:58 tgl Exp $
+ * $PostgreSQL: pgsql/src/include/nodes/execnodes.h,v 1.209 2009/10/10 01:43:50 tgl Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -339,7 +339,7 @@ typedef struct EState
 	ResultRelInfo *es_result_relations; /* array of ResultRelInfos */
 	int			es_num_result_relations;		/* length of array */
 	ResultRelInfo *es_result_relation_info;		/* currently active array elt */
-	JunkFilter *es_junkFilter;	/* currently active junk filter */
+	JunkFilter *es_junkFilter;	/* top-level junk filter, if any */
 
 	/* Stuff used for firing triggers: */
 	List	   *es_trig_target_relations;		/* trigger-only ResultRelInfos */
@@ -975,13 +975,25 @@ typedef struct ResultState
 	bool		rs_checkqual;	/* do we need to check the qual? */
 } ResultState;
 
+/* ----------------
+ *	 ModifyTableState information
+ * ----------------
+ */
+typedef struct ModifyTableState
+{
+	PlanState		ps;				/* its first field is NodeTag */
+	CmdType			operation;
+	PlanState	  **mt_plans;		/* subplans (one per target rel) */
+	int				mt_nplans;		/* number of plans in the array */
+	int				mt_whichplan;	/* which one is being executed (0..n-1) */
+	bool			fireBSTriggers;	/* do we need to fire stmt triggers? */
+} ModifyTableState;
+
 /* ----------------
  *	 AppendState information
  *
- *		nplans			how many plans are in the list
+ *		nplans			how many plans are in the array
  *		whichplan		which plan is being executed (0 .. n-1)
- *		firstplan		first plan to execute (usually 0)
- *		lastplan		last plan to execute (usually n-1)
  * ----------------
  */
 typedef struct AppendState
@@ -990,8 +1002,6 @@ typedef struct AppendState
 	PlanState **appendplans;	/* array of PlanStates for my inputs */
 	int			as_nplans;
 	int			as_whichplan;
-	int			as_firstplan;
-	int			as_lastplan;
 } AppendState;
 
 /* ----------------
-- 
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