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Simplify and encapsulate tuple routing support code.

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Instead of having ExecSetupPartitionTupleRouting return multiple out
parameters, have it return a pointer to a structure containing all of
those different things.  Also, provide and use a cleanup function,
ExecCleanupTupleRouting, instead of cleaning up all of the resources
allocated by ExecSetupPartitionTupleRouting individually.

Amit Khandekar, reviewed by Amit Langote, David Rowley, and me

Discussion: http://postgr.es/m/CAJ3gD9fWfxgKC+PfJZF3hkgAcNOy-LpfPxVYitDEXKHjeieWQQ@mail.gmail.com
This commit is contained in:
Robert Haas
2018-01-04 15:48:15 -05:00
parent d3fb72ea6d
commit cc6337d2fe
5 changed files with 153 additions and 189 deletions
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9
src/include/nodes/execnodes.h
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@@ -985,15 +985,8 @@ typedef struct ModifyTableState
TupleTableSlot *mt_existing; /* slot to store existing target tuple in */
List *mt_excludedtlist; /* the excluded pseudo relation's tlist */
TupleTableSlot *mt_conflproj; /* CONFLICT ... SET ... projection target */
struct PartitionDispatchData **mt_partition_dispatch_info;
struct PartitionTupleRouting *mt_partition_tuple_routing;
/* Tuple-routing support info */
int mt_num_dispatch; /* Number of entries in the above array */
int mt_num_partitions; /* Number of members in the following
* arrays */
ResultRelInfo **mt_partitions; /* Per partition result relation pointers */
TupleConversionMap **mt_partition_tupconv_maps;
/* Per partition tuple conversion map */
TupleTableSlot *mt_partition_tuple_slot;
struct TransitionCaptureState *mt_transition_capture;
/* controls transition table population for specified operation */
struct TransitionCaptureState *mt_oc_transition_capture;