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Split the processing of INSERT/UPDATE/DELETE operations out of execMain.c.

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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
This commit is contained in:
Tom Lane
2009-10-10 01:43:50 +00:00
parent b865d27582
commit 8a5849b7ff
30 changed files with 1546 additions and 1101 deletions
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18
src/backend/executor/execProcnode.c
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@ -12,7 +12,7 @@
*
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/executor/execProcnode.c,v 1.66 2009/09/27 21:10:53 tgl Exp $
* $PostgreSQL: pgsql/src/backend/executor/execProcnode.c,v 1.67 2009/10/10 01:43:47 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -93,6 +93,7 @@
#include "executor/nodeLimit.h"
#include "executor/nodeMaterial.h"
#include "executor/nodeMergejoin.h"
#include "executor/nodeModifyTable.h"
#include "executor/nodeNestloop.h"
#include "executor/nodeRecursiveunion.h"
#include "executor/nodeResult.h"
@ -146,6 +147,11 @@ ExecInitNode(Plan *node, EState *estate, int eflags)
estate, eflags);
break;
case T_ModifyTable:
result = (PlanState *) ExecInitModifyTable((ModifyTable *) node,
estate, eflags);
break;
case T_Append:
result = (PlanState *) ExecInitAppend((Append *) node,
estate, eflags);
@ -343,6 +349,10 @@ ExecProcNode(PlanState *node)
result = ExecResult((ResultState *) node);
break;
case T_ModifyTableState:
result = ExecModifyTable((ModifyTableState *) node);
break;
case T_AppendState:
result = ExecAppend((AppendState *) node);
break;
@ -524,7 +534,7 @@ MultiExecProcNode(PlanState *node)
* Recursively cleans up all the nodes in the plan rooted
* at 'node'.
*
* After this operation, the query plan will not be able to
* After this operation, the query plan will not be able to be
* processed any further. This should be called only after
* the query plan has been fully executed.
* ----------------------------------------------------------------
@ -553,6 +563,10 @@ ExecEndNode(PlanState *node)
ExecEndResult((ResultState *) node);
break;
case T_ModifyTableState:
ExecEndModifyTable((ModifyTableState *) node);
break;
case T_AppendState:
ExecEndAppend((AppendState *) node);
break;