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Commit0feb47b

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committed
implement state_tree_visitor()
1 parentdde5eb2 commit0feb47b

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5 files changed

+170
-51
lines changed

5 files changed

+170
-51
lines changed

‎src/hooks.c

Lines changed: 4 additions & 29 deletions
Original file line numberDiff line numberDiff line change
@@ -976,35 +976,10 @@ pathman_executor_hook(QueryDesc *queryDesc,
976976
#defineEXECUTOR_RUN(q,d,c)standard_ExecutorRun((q),(d),(c))
977977
#endif
978978

979-
PlanState*state= (PlanState*)queryDesc->planstate;
980-
981-
/* FIXME: we should modify ALL ModifyTable nodes! They might be hidden deeper. */
982-
if (IsA(state,ModifyTableState))
983-
{
984-
ModifyTableState*mt_state= (ModifyTableState*)state;
985-
inti;
986-
987-
for (i=0;i<mt_state->mt_nplans;i++)
988-
{
989-
CustomScanState*pr_state= (CustomScanState*)mt_state->mt_plans[i];
990-
991-
/* Check if this is a PartitionFilter + PartitionRouter combo */
992-
if (IsPartitionFilterState(pr_state)&&
993-
IsPartitionRouterState(linitial(pr_state->custom_ps)))
994-
{
995-
ResultRelInfo*rri=&mt_state->resultRelInfo[i];
996-
997-
/*
998-
* HACK: We unset junkfilter to disable
999-
* junk cleaning in ExecModifyTable.
1000-
*/
1001-
rri->ri_junkFilter=NULL;
1002-
1003-
/* HACK: change UPDATE operation to INSERT */
1004-
mt_state->operation=CMD_INSERT;
1005-
}
1006-
}
1007-
}
979+
/* Prepare ModifyTable nodes for PartitionRouter hackery */
980+
state_tree_visitor((PlanState*)queryDesc->planstate,
981+
prepare_modify_table_for_partition_router,
982+
NULL);
1008983

1009984
/* Call hooks set by other extensions if needed */
1010985
if (EXECUTOR_HOOK)

‎src/include/partition_router.h

Lines changed: 2 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -72,6 +72,8 @@ Plan *make_partition_router(Plan *subplan,
7272
intepq_param,
7373
List*returning_list);
7474

75+
voidprepare_modify_table_for_partition_router(PlanState*state,void*context);
76+
7577

7678
Node*partition_router_create_scan_state(CustomScan*node);
7779

‎src/include/planner_tree_modification.h

Lines changed: 8 additions & 3 deletions
Original file line numberDiff line numberDiff line change
@@ -25,9 +25,14 @@ void assign_query_id(Query *query);
2525
voidreset_query_id_generator(void);
2626

2727
/* Plan tree rewriting utility */
28-
voidplan_tree_walker(Plan*plan,
29-
void (*visitor) (Plan*plan,void*context),
30-
void*context);
28+
voidplan_tree_visitor(Plan*plan,
29+
void (*visitor) (Plan*plan,void*context),
30+
void*context);
31+
32+
/* PlanState tree rewriting utility */
33+
voidstate_tree_visitor(PlanState*state,
34+
void (*visitor) (PlanState*state,void*context),
35+
void*context);
3136

3237
/* Query tree rewriting utility */
3338
voidpathman_transform_query(Query*parse,ParamListInfoparams);

‎src/partition_router.c

Lines changed: 32 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -95,6 +95,38 @@ make_partition_router(Plan *subplan,
9595
return&cscan->scan.plan;
9696
}
9797

98+
void
99+
prepare_modify_table_for_partition_router(PlanState*state,void*context)
100+
{
101+
if (IsA(state,ModifyTableState))
102+
{
103+
ModifyTableState*mt_state= (ModifyTableState*)state;
104+
inti;
105+
106+
for (i=0;i<mt_state->mt_nplans;i++)
107+
{
108+
CustomScanState*pr_state= (CustomScanState*)mt_state->mt_plans[i];
109+
110+
/* Check if this is a PartitionFilter + PartitionRouter combo */
111+
if (IsPartitionFilterState(pr_state)&&
112+
IsPartitionRouterState(linitial(pr_state->custom_ps)))
113+
{
114+
ResultRelInfo*rri=&mt_state->resultRelInfo[i];
115+
116+
/*
117+
* HACK: We unset junkfilter to disable
118+
* junk cleaning in ExecModifyTable.
119+
*/
120+
rri->ri_junkFilter=NULL;
121+
122+
/* HACK: change UPDATE operation to INSERT */
123+
mt_state->operation=CMD_INSERT;
124+
}
125+
}
126+
}
127+
}
128+
129+
98130
Node*
99131
partition_router_create_scan_state(CustomScan*node)
100132
{

‎src/planner_tree_modification.c

Lines changed: 124 additions & 19 deletions
Original file line numberDiff line numberDiff line change
@@ -113,6 +113,9 @@ static void handle_modification_query(Query *parse, transform_query_cxt *context
113113
staticvoidpartition_filter_visitor(Plan*plan,void*context);
114114
staticvoidpartition_router_visitor(Plan*plan,void*context);
115115

116+
staticvoidstate_visit_subplans(List*plans,void (*visitor) (),void*context);
117+
staticvoidstate_visit_members(PlanState**planstates,intnplans,void (*visitor) (),void*context);
118+
116119
staticOidfind_deepest_partition(Oidrelid,Indexrti,Expr*quals);
117120
staticNode*eval_extern_params_mutator(Node*node,ParamListInfoparams);
118121
staticNode*adjust_appendrel_varnos(Node*node,adjust_appendrel_varnos_cxt*context);
@@ -152,9 +155,9 @@ reset_query_id_generator(void)
152155
* 'visitor' is applied right before return.
153156
*/
154157
void
155-
plan_tree_walker(Plan*plan,
156-
void (*visitor) (Plan*plan,void*context),
157-
void*context)
158+
plan_tree_visitor(Plan*plan,
159+
void (*visitor) (Plan*plan,void*context),
160+
void*context)
158161
{
159162
ListCell*l;
160163

@@ -167,50 +170,152 @@ plan_tree_walker(Plan *plan,
167170
switch (nodeTag(plan))
168171
{
169172
caseT_SubqueryScan:
170-
plan_tree_walker(((SubqueryScan*)plan)->subplan,visitor,context);
173+
plan_tree_visitor(((SubqueryScan*)plan)->subplan,visitor,context);
171174
break;
172175

173176
caseT_CustomScan:
174-
foreach(l, ((CustomScan*)plan)->custom_plans)
175-
plan_tree_walker((Plan*)lfirst(l),visitor,context);
177+
foreach(l, ((CustomScan*)plan)->custom_plans)
178+
plan_tree_visitor((Plan*)lfirst(l),visitor,context);
176179
break;
177180

178181
caseT_ModifyTable:
179182
foreach (l, ((ModifyTable*)plan)->plans)
180-
plan_tree_walker((Plan*)lfirst(l),visitor,context);
183+
plan_tree_visitor((Plan*)lfirst(l),visitor,context);
181184
break;
182185

183186
caseT_Append:
184-
foreach(l, ((Append*)plan)->appendplans)
185-
plan_tree_walker((Plan*)lfirst(l),visitor,context);
187+
foreach(l, ((Append*)plan)->appendplans)
188+
plan_tree_visitor((Plan*)lfirst(l),visitor,context);
186189
break;
187190

188191
caseT_MergeAppend:
189-
foreach(l, ((MergeAppend*)plan)->mergeplans)
190-
plan_tree_walker((Plan*)lfirst(l),visitor,context);
192+
foreach(l, ((MergeAppend*)plan)->mergeplans)
193+
plan_tree_visitor((Plan*)lfirst(l),visitor,context);
191194
break;
192195

193196
caseT_BitmapAnd:
194-
foreach(l, ((BitmapAnd*)plan)->bitmapplans)
195-
plan_tree_walker((Plan*)lfirst(l),visitor,context);
197+
foreach(l, ((BitmapAnd*)plan)->bitmapplans)
198+
plan_tree_visitor((Plan*)lfirst(l),visitor,context);
196199
break;
197200

198201
caseT_BitmapOr:
199-
foreach(l, ((BitmapOr*)plan)->bitmapplans)
200-
plan_tree_walker((Plan*)lfirst(l),visitor,context);
202+
foreach(l, ((BitmapOr*)plan)->bitmapplans)
203+
plan_tree_visitor((Plan*)lfirst(l),visitor,context);
201204
break;
202205

203206
default:
204207
break;
205208
}
206209

207-
plan_tree_walker(plan->lefttree,visitor,context);
208-
plan_tree_walker(plan->righttree,visitor,context);
210+
plan_tree_visitor(plan->lefttree,visitor,context);
211+
plan_tree_visitor(plan->righttree,visitor,context);
209212

210213
/* Apply visitor to the current node */
211214
visitor(plan,context);
212215
}
213216

217+
void
218+
state_tree_visitor(PlanState*state,
219+
void (*visitor) (PlanState*plan,void*context),
220+
void*context)
221+
{
222+
Plan*plan;
223+
ListCell*lc;
224+
225+
if (state==NULL)
226+
return;
227+
228+
plan=state->plan;
229+
230+
check_stack_depth();
231+
232+
/* Plan-type-specific fixes */
233+
switch (nodeTag(plan))
234+
{
235+
caseT_SubqueryScan:
236+
state_tree_visitor(((SubqueryScanState*)state)->subplan,visitor,context);
237+
break;
238+
239+
caseT_CustomScan:
240+
foreach (lc, ((CustomScanState*)state)->custom_ps)
241+
state_tree_visitor((PlanState*)lfirst(lc),visitor,context);
242+
break;
243+
244+
caseT_ModifyTable:
245+
state_visit_members(((ModifyTableState*)state)->mt_plans,
246+
((ModifyTableState*)state)->mt_nplans,
247+
visitor,context);
248+
break;
249+
250+
caseT_Append:
251+
state_visit_members(((AppendState*)state)->appendplans,
252+
((AppendState*)state)->as_nplans,
253+
visitor,context);
254+
break;
255+
256+
caseT_MergeAppend:
257+
state_visit_members(((MergeAppendState*)state)->mergeplans,
258+
((MergeAppendState*)state)->ms_nplans,
259+
visitor,context);
260+
break;
261+
262+
caseT_BitmapAnd:
263+
state_visit_members(((BitmapAndState*)state)->bitmapplans,
264+
((BitmapAndState*)state)->nplans,
265+
visitor,context);
266+
break;
267+
268+
caseT_BitmapOr:
269+
state_visit_members(((BitmapOrState*)state)->bitmapplans,
270+
((BitmapOrState*)state)->nplans,
271+
visitor,context);
272+
break;
273+
274+
default:
275+
break;
276+
}
277+
278+
state_visit_subplans(state->initPlan,visitor,context);
279+
state_visit_subplans(state->subPlan,visitor,context);
280+
281+
state_tree_visitor(state->lefttree,visitor,context);
282+
state_tree_visitor(state->righttree,visitor,context);
283+
284+
/* Apply visitor to the current node */
285+
visitor(state,context);
286+
}
287+
288+
/*
289+
* Walk a list of SubPlans (or initPlans, which also use SubPlan nodes).
290+
*/
291+
staticvoid
292+
state_visit_subplans(List*plans,
293+
void (*visitor) (),
294+
void*context)
295+
{
296+
ListCell*lc;
297+
298+
foreach (lc,plans)
299+
{
300+
SubPlanState*sps=lfirst_node(SubPlanState,lc);
301+
visitor(sps->planstate,context);
302+
}
303+
}
304+
305+
/*
306+
* Walk the constituent plans of a ModifyTable, Append, MergeAppend,
307+
* BitmapAnd, or BitmapOr node.
308+
*/
309+
staticvoid
310+
state_visit_members(PlanState**planstates,intnplans,
311+
void (*visitor) (),void*context)
312+
{
313+
inti;
314+
315+
for (i=0;i<nplans;i++)
316+
visitor(planstates[i],context);
317+
}
318+
214319

215320
/*
216321
* -------------------------------
@@ -586,15 +691,15 @@ void
586691
add_partition_filters(List*rtable,Plan*plan)
587692
{
588693
if (pg_pathman_enable_partition_filter)
589-
plan_tree_walker(plan,partition_filter_visitor,rtable);
694+
plan_tree_visitor(plan,partition_filter_visitor,rtable);
590695
}
591696

592697
/* Add PartitionRouter nodes to the plan tree */
593698
void
594699
add_partition_routers(List*rtable,Plan*plan)
595700
{
596701
if (pg_pathman_enable_partition_router)
597-
plan_tree_walker(plan,partition_router_visitor,rtable);
702+
plan_tree_visitor(plan,partition_router_visitor,rtable);
598703
}
599704

600705
/*

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