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nodeAppend tried to deal with multiple result relations, but apparently it never
really worked. Until now.
This commit is contained in:
Tom Lane
parent
6307b01b53
commit
6bdbd41f2d
@ -27,7 +27,7 @@
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*
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*
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* IDENTIFICATION
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* $Header: /cvsroot/pgsql/src/backend/executor/execMain.c,v 1.115 2000/05/30 00:49:44 momjian Exp $
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* $Header: /cvsroot/pgsql/src/backend/executor/execMain.c,v 1.116 2000/06/10 05:16:38 tgl Exp $
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*
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*-------------------------------------------------------------------------
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*/
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@ -50,8 +50,7 @@ static TupleDesc InitPlan(CmdType operation,
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Query *parseTree,
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Plan *plan,
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EState *estate);
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static void EndPlan(Plan *plan,
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EState *estate);
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static void EndPlan(Plan *plan, EState *estate);
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static TupleTableSlot *ExecutePlan(EState *estate, Plan *plan,
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CmdType operation,
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int offsetTuples,
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@ -916,15 +915,8 @@ static void
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EndPlan(Plan *plan, EState *estate)
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{
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RelationInfo *resultRelationInfo;
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Relation intoRelationDesc;
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List *l;
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/*
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* get information from state
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*/
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resultRelationInfo = estate->es_result_relation_info;
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intoRelationDesc = estate->es_into_relation_descriptor;
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/*
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* shut down any PlanQual processing we were doing
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*/
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@ -932,42 +924,34 @@ EndPlan(Plan *plan, EState *estate)
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EndEvalPlanQual(estate);
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/*
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* shut down the query
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* shut down the node-type-specific query processing
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*/
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ExecEndNode(plan, plan);
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/*
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* destroy the executor "tuple" table.
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*/
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{
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TupleTable tupleTable = (TupleTable) estate->es_tupleTable;
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ExecDropTupleTable(tupleTable, true);
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estate->es_tupleTable = NULL;
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}
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ExecDropTupleTable(estate->es_tupleTable, true);
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estate->es_tupleTable = NULL;
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/*
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* close the result relations if necessary, but hold locks on them
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* until xact commit
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* close the result relation if necessary, but hold lock on it
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* until xact commit. NB: must not do this till after ExecEndNode(),
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* see nodeAppend.c ...
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*/
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resultRelationInfo = estate->es_result_relation_info;
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if (resultRelationInfo != NULL)
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{
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Relation resultRelationDesc;
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resultRelationDesc = resultRelationInfo->ri_RelationDesc;
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heap_close(resultRelationDesc, NoLock);
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/*
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* close indices on the result relation
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*/
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heap_close(resultRelationInfo->ri_RelationDesc, NoLock);
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/* close indices on the result relation, too */
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ExecCloseIndices(resultRelationInfo);
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}
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/*
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* close the "into" relation if necessary, again keeping lock
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*/
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if (intoRelationDesc != NULL)
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heap_close(intoRelationDesc, NoLock);
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if (estate->es_into_relation_descriptor != NULL)
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heap_close(estate->es_into_relation_descriptor, NoLock);
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/*
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* close any relations selected FOR UPDATE, again keeping locks
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@ -8,7 +8,7 @@
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*
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*
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* IDENTIFICATION
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* $Header: /cvsroot/pgsql/src/backend/executor/nodeAppend.c,v 1.31 2000/06/09 01:44:09 momjian Exp $
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* $Header: /cvsroot/pgsql/src/backend/executor/nodeAppend.c,v 1.32 2000/06/10 05:16:38 tgl Exp $
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*
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*-------------------------------------------------------------------------
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*/
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@ -189,6 +189,9 @@ ExecInitAppend(Append *node, EState *estate, Plan *parent)
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Plan *initNode;
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List *junkList;
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RelationInfo *es_rri = estate->es_result_relation_info;
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bool inherited_result_rel = false;
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CXT1_printf("ExecInitAppend: context is %d\n", CurrentMemoryContext);
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/* ----------------
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* assign execution state to node and get information
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@ -201,8 +204,8 @@ ExecInitAppend(Append *node, EState *estate, Plan *parent)
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nplans = length(appendplans);
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rtable = node->inheritrtable;
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CXT1_printf("ExecInitAppend: context is %d\n", CurrentMemoryContext);
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initialized = (bool *) palloc(nplans * sizeof(bool));
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MemSet(initialized, 0, nplans * sizeof(bool));
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/* ----------------
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* create new AppendState for our append node
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@ -231,7 +234,7 @@ ExecInitAppend(Append *node, EState *estate, Plan *parent)
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#define APPEND_NSLOTS 1
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/* ----------------
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* append nodes still have Result slots, which hold pointers
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* to tuples, so we have to initialize them..
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* to tuples, so we have to initialize them.
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* ----------------
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*/
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ExecInitResultTupleSlot(estate, &appendstate->cstate);
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@ -247,34 +250,60 @@ ExecInitAppend(Append *node, EState *estate, Plan *parent)
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(node->inheritrelid == es_rri->ri_RangeTableIndex))
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{
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List *resultList = NIL;
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Oid initial_reloid = RelationGetRelid(es_rri->ri_RelationDesc);
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List *rtentryP;
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inherited_result_rel = true;
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foreach(rtentryP, rtable)
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{
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RangeTblEntry *rtentry = lfirst(rtentryP);
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Oid reloid;
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Oid reloid = rtentry->relid;
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RelationInfo *rri;
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reloid = rtentry->relid;
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rri = makeNode(RelationInfo);
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rri->ri_RangeTableIndex = es_rri->ri_RangeTableIndex;
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rri->ri_RelationDesc = heap_open(reloid, RowExclusiveLock);
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rri->ri_NumIndices = 0;
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rri->ri_IndexRelationDescs = NULL; /* index descs */
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rri->ri_IndexRelationInfo = NULL; /* index key info */
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/*
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* We must recycle the RelationInfo already opened by InitPlan()
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* for the parent rel, else we will leak the associated relcache
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* refcount.
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*/
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if (reloid == initial_reloid)
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{
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Assert(es_rri != NULL); /* check we didn't use it already */
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rri = es_rri;
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es_rri = NULL;
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}
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else
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{
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rri = makeNode(RelationInfo);
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rri->ri_RangeTableIndex = node->inheritrelid;
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rri->ri_RelationDesc = heap_open(reloid, RowExclusiveLock);
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rri->ri_NumIndices = 0;
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rri->ri_IndexRelationDescs = NULL; /* index descs */
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rri->ri_IndexRelationInfo = NULL; /* index key info */
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if (rri->ri_RelationDesc->rd_rel->relhasindex)
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ExecOpenIndices(reloid, rri);
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/*
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* XXX if the operation is a DELETE then we need not open
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* indices, but how to tell that here?
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*/
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if (rri->ri_RelationDesc->rd_rel->relhasindex)
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ExecOpenIndices(reloid, rri);
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}
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resultList = lcons(rri, resultList);
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/*
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* NB: the as_result_relation_info_list must be in the same
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* order as the rtentry list otherwise update or delete on
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* inheritance hierarchies won't work.
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*/
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resultList = lappend(resultList, rri);
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}
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/*
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The as_result_relation_info_list must be in the same
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order as the rtentry list otherwise update or delete on
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inheritance hierarchies won't work.
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*/
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appendstate->as_result_relation_info_list = lreverse(resultList);
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appendstate->as_result_relation_info_list = resultList;
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/* Check that we recycled InitPlan()'s RelationInfo */
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Assert(es_rri == NULL);
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/* Just for paranoia's sake, clear link until we set it properly */
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estate->es_result_relation_info = NULL;
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}
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/* ----------------
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* call ExecInitNode on each of the plans in our list
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* and save the results into the array "initialized"
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@ -304,8 +333,7 @@ ExecInitAppend(Append *node, EState *estate, Plan *parent)
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* the one that we're looking at the subclasses of
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* ---------------
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*/
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if ((es_rri != (RelationInfo *) NULL) &&
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(node->inheritrelid == es_rri->ri_RangeTableIndex))
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if (inherited_result_rel)
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{
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JunkFilter *j = ExecInitJunkFilter(initNode->targetlist,
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ExecGetTupType(initNode));
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@ -361,7 +389,6 @@ ExecProcAppend(Append *node)
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{
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EState *estate;
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AppendState *appendstate;
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int whichplan;
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List *appendplans;
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Plan *subnode;
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@ -376,7 +403,6 @@ ExecProcAppend(Append *node)
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appendstate = node->appendstate;
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estate = node->plan.state;
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direction = estate->es_direction;
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appendplans = node->appendplans;
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whichplan = appendstate->as_whichplan;
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result_slot = appendstate->cstate.cs_ResultTupleSlot;
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@ -448,19 +474,20 @@ ExecProcAppend(Append *node)
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void
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ExecEndAppend(Append *node)
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{
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EState *estate;
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AppendState *appendstate;
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int nplans;
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List *appendplans;
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bool *initialized;
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int i;
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List *resultRelationInfoList;
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RelationInfo *resultRelationInfo;
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/* ----------------
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* get information from the node
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* ----------------
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*/
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appendstate = node->appendstate;
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estate = node->plan.state;
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appendplans = node->appendplans;
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nplans = appendstate->as_nplans;
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initialized = appendstate->as_initialized;
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@ -471,7 +498,7 @@ ExecEndAppend(Append *node)
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*/
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for (i = 0; i < nplans; i++)
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{
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if (initialized[i] == TRUE)
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if (initialized[i])
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ExecEndNode((Plan *) nth(i, appendplans), (Plan *) node);
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}
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@ -482,6 +509,7 @@ ExecEndAppend(Append *node)
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resultRelationInfoList = appendstate->as_result_relation_info_list;
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while (resultRelationInfoList != NIL)
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{
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RelationInfo *resultRelationInfo;
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Relation resultRelationDesc;
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resultRelationInfo = (RelationInfo *) lfirst(resultRelationInfoList);
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@ -490,8 +518,13 @@ ExecEndAppend(Append *node)
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pfree(resultRelationInfo);
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resultRelationInfoList = lnext(resultRelationInfoList);
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}
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if (appendstate->as_result_relation_info_list)
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pfree(appendstate->as_result_relation_info_list);
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appendstate->as_result_relation_info_list = NIL;
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/*
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* This next step is critical to prevent EndPlan() from trying to close
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* an already-closed-and-deleted RelationInfo --- es_result_relation_info
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* is pointing at one of the nodes we just zapped above.
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*/
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estate->es_result_relation_info = NULL;
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/*
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* XXX should free appendstate->as_rtentries and
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