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Commit934e8d0

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committed
new macro IsVarSpointDist, create_crossmatch_path() uses actual spoint attnums, fixed threshold save\restore
1 parent73cc7cc commit934e8d0

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1 file changed

+91
-35
lines changed

1 file changed

+91
-35
lines changed

‎init.c‎

Lines changed: 91 additions & 35 deletions
Original file line numberDiff line numberDiff line change
@@ -78,6 +78,29 @@ static CustomScanMethodscrossmatch_plan_methods;
7878
staticCustomExecMethodscrossmatch_exec_methods;
7979

8080

81+
#defineIsVarSpointDist(arg,dist_func_oid) \
82+
(\
83+
IsA(arg, FuncExpr) &&\
84+
((FuncExpr *) (arg))->funcid == (dist_func_oid) &&\
85+
IsA(linitial(((FuncExpr *) (arg))->args), Var) &&\
86+
IsA(lsecond(((FuncExpr *) (arg))->args), Var)\
87+
)
88+
89+
90+
staticfloat8
91+
cstring_to_float8(char*str)
92+
{
93+
returnDatumGetFloat8(DirectFunctionCall1(float8in,
94+
CStringGetDatum(str)));
95+
}
96+
97+
staticchar*
98+
float8_to_cstring(float8val)
99+
{
100+
returnDatumGetCString(DirectFunctionCall1(float8out,
101+
Float8GetDatum(val)));
102+
}
103+
81104
staticfloat8
82105
get_const_val(Const*node)
83106
{
@@ -174,6 +197,26 @@ pick_suitable_index(Oid relation, AttrNumber column)
174197
returnfound_index;
175198
}
176199

200+
staticvoid
201+
get_spoint_attnums(FuncExpr*fexpr,RelOptInfo*outer,RelOptInfo*inner,
202+
AttrNumber*outer_spoint,AttrNumber*inner_spoint)
203+
{
204+
ListCell*dist_arg;
205+
206+
Assert(outer->relid!=0&&inner->relid!=0);
207+
208+
foreach(dist_arg,fexpr->args)
209+
{
210+
Var*arg= (Var*)lfirst(dist_arg);
211+
212+
if (arg->varno==outer->relid)
213+
*outer_spoint=arg->varoattno;
214+
215+
if (arg->varno==inner->relid)
216+
*inner_spoint=arg->varoattno;
217+
}
218+
}
219+
177220
staticPath*
178221
crossmatch_find_cheapest_path(PlannerInfo*root,
179222
RelOptInfo*joinrel,
@@ -211,7 +254,9 @@ create_crossmatch_path(PlannerInfo *root,
211254
ParamPathInfo*param_info,
212255
List*restrict_clauses,
213256
Relidsrequired_outer,
214-
float8threshold)
257+
float8threshold,
258+
AttrNumberouter_spoint,
259+
AttrNumberinner_spoint)
215260
{
216261
CrossmatchJoinPath*result;
217262

@@ -221,8 +266,8 @@ create_crossmatch_path(PlannerInfo *root,
221266
Oidinner_idx;
222267

223268
/* TODO: use actual column numbers */
224-
if ((outer_idx=pick_suitable_index(outer_rel,1))==InvalidOid||
225-
(inner_idx=pick_suitable_index(inner_rel,1))==InvalidOid)
269+
if ((outer_idx=pick_suitable_index(outer_rel,outer_spoint))==InvalidOid||
270+
(inner_idx=pick_suitable_index(inner_rel,inner_spoint))==InvalidOid)
226271
{
227272
return;
228273
}
@@ -280,7 +325,7 @@ join_pathlist_hook(PlannerInfo *root,
280325
PointerGetDatum(dist_func_name)));
281326

282327
if (dist_func==InvalidOid)
283-
elog(ERROR,"function dist not found!");
328+
return;
284329

285330
if (set_join_pathlist_next)
286331
set_join_pathlist_next(root,
@@ -312,10 +357,11 @@ join_pathlist_hook(PlannerInfo *root,
312357
arg2=lsecond(opExpr->args);
313358

314359
if (opExpr->opno==Float8LessOperator&&
315-
IsA(arg1,FuncExpr)&&
316-
((FuncExpr*)arg1)->funcid==dist_func&&
317-
IsA(arg2,Const))
360+
IsVarSpointDist(arg1,dist_func)&&IsA(arg2,Const))
318361
{
362+
AttrNumberouter_spoint,
363+
inner_spoint;
364+
319365
Path*outer_path=crossmatch_find_cheapest_path(root,joinrel,outerrel);
320366
Path*inner_path=crossmatch_find_cheapest_path(root,joinrel,innerrel);
321367

@@ -329,17 +375,22 @@ join_pathlist_hook(PlannerInfo *root,
329375
required_outer,
330376
&restrict_clauses);
331377

378+
get_spoint_attnums((FuncExpr*)arg1,outerrel,innerrel,
379+
&outer_spoint,&inner_spoint);
380+
332381
create_crossmatch_path(root,joinrel,outer_path,inner_path,
333382
param_info,restrict_clauses,required_outer,
334-
get_const_val((Const*)arg2));
383+
get_const_val((Const*)arg2),
384+
outer_spoint,inner_spoint);
335385

336386
break;
337387
}
338388
elseif (opExpr->opno==get_commutator(Float8LessOperator)&&
339-
IsA(arg1,Const)&&
340-
IsA(arg2,FuncExpr)&&
341-
((FuncExpr*)arg2)->funcid==dist_func)
389+
IsA(arg1,Const)&&IsVarSpointDist(arg2,dist_func))
342390
{
391+
AttrNumberouter_spoint,
392+
inner_spoint;
393+
343394
/* TODO: merge duplicate code */
344395
Path*outer_path=crossmatch_find_cheapest_path(root,joinrel,outerrel);
345396
Path*inner_path=crossmatch_find_cheapest_path(root,joinrel,innerrel);
@@ -354,9 +405,13 @@ join_pathlist_hook(PlannerInfo *root,
354405
required_outer,
355406
&restrict_clauses);
356407

408+
get_spoint_attnums((FuncExpr*)arg2,outerrel,innerrel,
409+
&outer_spoint,&inner_spoint);
410+
357411
create_crossmatch_path(root,joinrel,outer_path,inner_path,
358412
param_info,restrict_clauses,required_outer,
359-
get_const_val((Const*)arg1));
413+
get_const_val((Const*)arg1),
414+
outer_spoint,inner_spoint);
360415
}
361416
}
362417
}
@@ -372,46 +427,35 @@ create_crossmatch_plan(PlannerInfo *root,
372427
{
373428
CrossmatchJoinPath*gpath= (CrossmatchJoinPath*)best_path;
374429
List*joinrestrictclauses=gpath->joinrestrictinfo;
375-
List*joinclauses;/* NOTE: do we really need it? */
376-
List*otherclauses;
430+
List*joinclauses;
377431
CustomScan*cscan;
378-
float8*threshold=palloc(sizeof(float8));
379432

380-
if (IS_OUTER_JOIN(gpath->jointype))
381-
{
382-
extract_actual_join_clauses(joinrestrictclauses,
383-
&joinclauses,&otherclauses);
384-
}
385-
else
386-
{
387-
joinclauses=extract_actual_clauses(joinrestrictclauses,
388-
false);
389-
otherclauses=NIL;
390-
}
433+
Assert(!IS_OUTER_JOIN(gpath->jointype));
434+
joinclauses=extract_actual_clauses(joinrestrictclauses, false);
391435

392436
cscan=makeNode(CustomScan);
393437
cscan->scan.plan.targetlist=tlist;
394-
cscan->custom_scan_tlist=tlist;/* output of this node */
395438
cscan->scan.plan.qual=NIL;
396439
cscan->scan.scanrelid=0;
440+
cscan->custom_scan_tlist=tlist;/* output of this node */
397441

398442
cscan->flags=best_path->flags;
399443
cscan->methods=&crossmatch_plan_methods;
400444

401-
cscan->custom_private=list_make2(list_make4_oid(gpath->outer_idx,
445+
cscan->custom_private=list_make1(list_make4_oid(gpath->outer_idx,
402446
gpath->outer_rel,
403447
gpath->inner_idx,
404-
gpath->inner_rel),
405-
list_make1(threshold));
406-
*threshold=gpath->threshold;
448+
gpath->inner_rel));
449+
cscan->custom_private=lappend(cscan->custom_private,
450+
makeString(float8_to_cstring(gpath->threshold)));
407451

408452
return&cscan->scan.plan;
409453
}
410454

411455
staticNode*
412456
crossmatch_create_scan_state(CustomScan*node)
413457
{
414-
CrossmatchScanState*scan_state=palloc0(sizeof(CrossmatchScanState));
458+
CrossmatchScanState*scan_state=palloc0(sizeof(CrossmatchScanState));
415459

416460
NodeSetTag(scan_state,T_CustomScanState);
417461
scan_state->css.flags=node->flags;
@@ -426,7 +470,7 @@ crossmatch_create_scan_state(CustomScan *node)
426470
scan_state->outer_rel=lsecond_oid(linitial(node->custom_private));
427471
scan_state->inner_idx=lthird_oid(linitial(node->custom_private));
428472
scan_state->inner_rel=lfourth_oid(linitial(node->custom_private));
429-
scan_state->threshold=*(float8*)linitial(lsecond(node->custom_private));
473+
scan_state->threshold=cstring_to_float8(strVal(lsecond(node->custom_private)));
430474

431475
return (Node*)scan_state;
432476
}
@@ -533,8 +577,14 @@ crossmatch_exec(CustomScanState *node)
533577
node->ss.ps.ps_TupFromTlist= false;
534578
}
535579
else
536-
returnExecStoreTuple(htup,node->ss.ps.ps_ResultTupleSlot,
537-
InvalidBuffer, false);
580+
{
581+
TupleTableSlot*result;
582+
583+
result=ExecStoreTuple(htup,node->ss.ps.ps_ResultTupleSlot,
584+
InvalidBuffer, false);
585+
586+
returnresult;
587+
}
538588
}
539589
}
540590

@@ -572,6 +622,12 @@ crossmatch_explain(CustomScanState *node, List *ancestors, ExplainState *es)
572622
appendStringInfo(&str,"%s",
573623
get_rel_name(scan_state->inner_idx));
574624
ExplainPropertyText("Inner index",str.data,es);
625+
626+
resetStringInfo(&str);
627+
628+
appendStringInfo(&str,"%s",
629+
float8_to_cstring(scan_state->threshold));
630+
ExplainPropertyText("Threshold",str.data,es);
575631
}
576632

577633
void

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