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| author | Tom Lane <tgl@sss.pgh.pa.us> | 2012-03-05 16:15:59 -0500 |
|---|---|---|
| committer | Tom Lane <tgl@sss.pgh.pa.us> | 2012-03-05 16:15:59 -0500 |
| commit | 6b289942bfdbbfa2955cedc591c522822a7ffbfe (patch) | |
| tree | 6205261ee347d578153391cec4dbd99e55e1a6bd /src/include/optimizer/pathnode.h | |
| parent | 3f47e145f1869f147a807e5a2cb80d21a13e10ae (diff) | |
Redesign PlanForeignScan API to allow multiple paths for a foreign table.
The original API specification only allowed an FDW to create a single
access path, which doesn't seem like a terribly good idea in hindsight.
Instead, move the responsibility for building the Path node and calling
add_path() into the FDW's PlanForeignScan function. Now, it can do that
more than once if appropriate. There is no longer any need for the
transient FdwPlan struct, so get rid of that.
Etsuro Fujita, Shigeru Hanada, Tom Lane
Diffstat (limited to 'src/include/optimizer/pathnode.h')
| -rw-r--r-- | src/include/optimizer/pathnode.h | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/src/include/optimizer/pathnode.h b/src/include/optimizer/pathnode.h index 1cf34171f4f..3f80ca3fe9f 100644 --- a/src/include/optimizer/pathnode.h +++ b/src/include/optimizer/pathnode.h @@ -68,7 +68,11 @@ extern Path *create_functionscan_path(PlannerInfo *root, RelOptInfo *rel); extern Path *create_valuesscan_path(PlannerInfo *root, RelOptInfo *rel); extern Path *create_ctescan_path(PlannerInfo *root, RelOptInfo *rel); extern Path *create_worktablescan_path(PlannerInfo *root, RelOptInfo *rel); -extern ForeignPath *create_foreignscan_path(PlannerInfo *root, RelOptInfo *rel); +extern ForeignPath *create_foreignscan_path(PlannerInfo *root, RelOptInfo *rel, + double rows, Cost startup_cost, Cost total_cost, + List *pathkeys, + Relids required_outer, List *param_clauses, + List *fdw_private); extern Relids calc_nestloop_required_outer(Path *outer_path, Path *inner_path); extern Relids calc_non_nestloop_required_outer(Path *outer_path, Path *inner_path); |