1 files changed, 20 insertions, 66 deletions

diff --git a/src/backend/commands/copy.c b/src/backend/commands/copy.c
index 118115aa42a..66cbff7eadc 100644
--- a/src/backend/commands/copy.c
+++ b/src/backend/commands/copy.c
@@ -166,12 +166,9 @@ typedef struct CopyStateData
 	bool		volatile_defexprs;	/* is any of defexprs volatile? */
 	List	   *range_table;
 
-	PartitionDispatch *partition_dispatch_info;
-	int			num_dispatch;	/* Number of entries in the above array */
-	int			num_partitions; /* Number of members in the following arrays */
-	ResultRelInfo **partitions; /* Per partition result relation pointers */
-	TupleConversionMap **partition_tupconv_maps;
-	TupleTableSlot *partition_tuple_slot;
+	/* Tuple-routing support info */
+	PartitionTupleRouting *partition_tuple_routing;
+
 	TransitionCaptureState *transition_capture;
 	TupleConversionMap **transition_tupconv_maps;
 
@@ -2472,28 +2469,10 @@ CopyFrom(CopyState cstate)
 	 */
 	if (cstate->rel->rd_rel->relkind == RELKIND_PARTITIONED_TABLE)
 	{
-		PartitionDispatch *partition_dispatch_info;
-		ResultRelInfo **partitions;
-		TupleConversionMap **partition_tupconv_maps;
-		TupleTableSlot *partition_tuple_slot;
-		int			num_parted,
-					num_partitions;
-
-		ExecSetupPartitionTupleRouting(NULL,
-									   cstate->rel,
-									   1,
-									   estate,
-									   &partition_dispatch_info,
-									   &partitions,
-									   &partition_tupconv_maps,
-									   &partition_tuple_slot,
-									   &num_parted, &num_partitions);
-		cstate->partition_dispatch_info = partition_dispatch_info;
-		cstate->num_dispatch = num_parted;
-		cstate->partitions = partitions;
-		cstate->num_partitions = num_partitions;
-		cstate->partition_tupconv_maps = partition_tupconv_maps;
-		cstate->partition_tuple_slot = partition_tuple_slot;
+		PartitionTupleRouting *proute;
+
+		proute = cstate->partition_tuple_routing =
+			ExecSetupPartitionTupleRouting(NULL, cstate->rel, 1, estate);
 
 		/*
 		 * If we are capturing transition tuples, they may need to be
@@ -2506,11 +2485,11 @@ CopyFrom(CopyState cstate)
 			int			i;
 
 			cstate->transition_tupconv_maps = (TupleConversionMap **)
-				palloc0(sizeof(TupleConversionMap *) * cstate->num_partitions);
-			for (i = 0; i < cstate->num_partitions; ++i)
+				palloc0(sizeof(TupleConversionMap *) * proute->num_partitions);
+			for (i = 0; i < proute->num_partitions; ++i)
 			{
 				cstate->transition_tupconv_maps[i] =
-					convert_tuples_by_name(RelationGetDescr(cstate->partitions[i]->ri_RelationDesc),
+					convert_tuples_by_name(RelationGetDescr(proute->partitions[i]->ri_RelationDesc),
 										   RelationGetDescr(cstate->rel),
 										   gettext_noop("could not convert row type"));
 			}
@@ -2530,7 +2509,7 @@ CopyFrom(CopyState cstate)
 	if ((resultRelInfo->ri_TrigDesc != NULL &&
 		 (resultRelInfo->ri_TrigDesc->trig_insert_before_row ||
 		  resultRelInfo->ri_TrigDesc->trig_insert_instead_row)) ||
-		cstate->partition_dispatch_info != NULL ||
+		cstate->partition_tuple_routing != NULL ||
 		cstate->volatile_defexprs)
 	{
 		useHeapMultiInsert = false;
@@ -2605,10 +2584,11 @@ CopyFrom(CopyState cstate)
 		ExecStoreTuple(tuple, slot, InvalidBuffer, false);
 
 		/* Determine the partition to heap_insert the tuple into */
-		if (cstate->partition_dispatch_info)
+		if (cstate->partition_tuple_routing)
 		{
 			int			leaf_part_index;
 			TupleConversionMap *map;
+			PartitionTupleRouting *proute = cstate->partition_tuple_routing;
 
 			/*
 			 * Away we go ... If we end up not finding a partition after all,
@@ -2619,11 +2599,11 @@ CopyFrom(CopyState cstate)
 			 * partition, respectively.
 			 */
 			leaf_part_index = ExecFindPartition(resultRelInfo,
-												cstate->partition_dispatch_info,
+												proute->partition_dispatch_info,
 												slot,
 												estate);
 			Assert(leaf_part_index >= 0 &&
-				   leaf_part_index < cstate->num_partitions);
+				   leaf_part_index < proute->num_partitions);
 
 			/*
 			 * If this tuple is mapped to a partition that is not same as the
@@ -2641,7 +2621,7 @@ CopyFrom(CopyState cstate)
 			 * to the selected partition.
 			 */
 			saved_resultRelInfo = resultRelInfo;
-			resultRelInfo = cstate->partitions[leaf_part_index];
+			resultRelInfo = proute->partitions[leaf_part_index];
 
 			/* We do not yet have a way to insert into a foreign partition */
 			if (resultRelInfo->ri_FdwRoutine)
@@ -2688,7 +2668,7 @@ CopyFrom(CopyState cstate)
 			 * We might need to convert from the parent rowtype to the
 			 * partition rowtype.
 			 */
-			map = cstate->partition_tupconv_maps[leaf_part_index];
+			map = proute->partition_tupconv_maps[leaf_part_index];
 			if (map)
 			{
 				Relation	partrel = resultRelInfo->ri_RelationDesc;
@@ -2700,7 +2680,7 @@ CopyFrom(CopyState cstate)
 				 * point on.  Use a dedicated slot from this point on until
 				 * we're finished dealing with the partition.
 				 */
-				slot = cstate->partition_tuple_slot;
+				slot = proute->partition_tuple_slot;
 				Assert(slot != NULL);
 				ExecSetSlotDescriptor(slot, RelationGetDescr(partrel));
 				ExecStoreTuple(tuple, slot, InvalidBuffer, true);
@@ -2852,34 +2832,8 @@ CopyFrom(CopyState cstate)
 	ExecCloseIndices(resultRelInfo);
 
 	/* Close all the partitioned tables, leaf partitions, and their indices */
-	if (cstate->partition_dispatch_info)
-	{
-		int			i;
-
-		/*
-		 * Remember cstate->partition_dispatch_info[0] corresponds to the root
-		 * partitioned table, which we must not try to close, because it is
-		 * the main target table of COPY that will be closed eventually by
-		 * DoCopy().  Also, tupslot is NULL for the root partitioned table.
-		 */
-		for (i = 1; i < cstate->num_dispatch; i++)
-		{
-			PartitionDispatch pd = cstate->partition_dispatch_info[i];
-
-			heap_close(pd->reldesc, NoLock);
-			ExecDropSingleTupleTableSlot(pd->tupslot);
-		}
-		for (i = 0; i < cstate->num_partitions; i++)
-		{
-			ResultRelInfo *resultRelInfo = cstate->partitions[i];
-
-			ExecCloseIndices(resultRelInfo);
-			heap_close(resultRelInfo->ri_RelationDesc, NoLock);
-		}
-
-		/* Release the standalone partition tuple descriptor */
-		ExecDropSingleTupleTableSlot(cstate->partition_tuple_slot);
-	}
+	if (cstate->partition_tuple_routing)
+		ExecCleanupTupleRouting(cstate->partition_tuple_routing);
 
 	/* Close any trigger target relations */
 	ExecCleanUpTriggerState(estate);