diff options
Diffstat (limited to 'src/backend/executor/execAmi.c')
| -rw-r--r-- | src/backend/executor/execAmi.c | 60 |
1 files changed, 41 insertions, 19 deletions
diff --git a/src/backend/executor/execAmi.c b/src/backend/executor/execAmi.c index 7ceb7cd2c6f..1d7bf67f60b 100644 --- a/src/backend/executor/execAmi.c +++ b/src/backend/executor/execAmi.c @@ -6,7 +6,7 @@ * Portions Copyright (c) 1996-2002, PostgreSQL Global Development Group * Portions Copyright (c) 1994, Regents of the University of California * - * $Id: execAmi.c,v 1.64 2002/06/20 20:29:27 momjian Exp $ + * $Id: execAmi.c,v 1.65 2002/11/30 05:21:01 tgl Exp $ * *------------------------------------------------------------------------- */ @@ -170,14 +170,10 @@ ExecReScan(Plan *node, ExprContext *exprCtxt, Plan *parent) } } -/* ---------------------------------------------------------------- - * ExecMarkPos - * - * Marks the current scan position. +/* + * ExecMarkPos * - * XXX Needs to be extended to include all the node types, - * or at least all the ones that can be directly below a mergejoin. - * ---------------------------------------------------------------- + * Marks the current scan position. */ void ExecMarkPos(Plan *node) @@ -192,6 +188,10 @@ ExecMarkPos(Plan *node) ExecIndexMarkPos((IndexScan *) node); break; + case T_TidScan: + ExecTidMarkPos((TidScan *) node); + break; + case T_FunctionScan: ExecFunctionMarkPos((FunctionScan *) node); break; @@ -204,10 +204,6 @@ ExecMarkPos(Plan *node) ExecSortMarkPos((Sort *) node); break; - case T_TidScan: - ExecTidMarkPos((TidScan *) node); - break; - default: /* don't make hard error unless caller asks to restore... */ elog(LOG, "ExecMarkPos: node type %d not supported", @@ -216,14 +212,10 @@ ExecMarkPos(Plan *node) } } -/* ---------------------------------------------------------------- - * ExecRestrPos - * - * restores the scan position previously saved with ExecMarkPos() +/* + * ExecRestrPos * - * XXX Needs to be extended to include all the node types, - * or at least all the ones that can be directly below a mergejoin. - * ---------------------------------------------------------------- + * restores the scan position previously saved with ExecMarkPos() */ void ExecRestrPos(Plan *node) @@ -238,6 +230,10 @@ ExecRestrPos(Plan *node) ExecIndexRestrPos((IndexScan *) node); break; + case T_TidScan: + ExecTidRestrPos((TidScan *) node); + break; + case T_FunctionScan: ExecFunctionRestrPos((FunctionScan *) node); break; @@ -256,3 +252,29 @@ ExecRestrPos(Plan *node) break; } } + +/* + * ExecSupportsMarkRestore - does a plan type support mark/restore? + * + * XXX Ideally, all plan node types would support mark/restore, and this + * wouldn't be needed. For now, this had better match the routines above. + */ +bool +ExecSupportsMarkRestore(NodeTag plantype) +{ + switch (plantype) + { + case T_SeqScan: + case T_IndexScan: + case T_TidScan: + case T_FunctionScan: + case T_Material: + case T_Sort: + return true; + + default: + break; + } + + return false; +} |