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Centralize executor-related partitioning code.

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Some code is moved from partition.c, which has grown very quickly lately;
splitting the executor parts out might help to keep it from getting
totally out of control.  Other code is moved from execMain.c.  All is
moved to a new file execPartition.c.  get_partition_for_tuple now has
a new interface that more clearly separates executor concerns from
generic concerns.

Amit Langote.  A slight comment tweak by me.

Discussion: http://postgr.es/m/1f0985f8-3b61-8bc4-4350-baa6d804cb6d@lab.ntt.co.jp
This commit is contained in:
Robert Haas
2017-11-15 10:23:28 -05:00
parent cd8ce3a22c
commit 4e5fe9ad19
9 changed files with 717 additions and 695 deletions
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14
src/include/executor/executor.h
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@ -188,6 +188,8 @@ extern void ExecCleanUpTriggerState(EState *estate);
extern bool ExecContextForcesOids(PlanState *planstate, bool *hasoids);
extern void ExecConstraints(ResultRelInfo *resultRelInfo,
TupleTableSlot *slot, EState *estate);
extern void ExecPartitionCheck(ResultRelInfo *resultRelInfo,
TupleTableSlot *slot, EState *estate);
extern void ExecWithCheckOptions(WCOKind kind, ResultRelInfo *resultRelInfo,
TupleTableSlot *slot, EState *estate);
extern LockTupleMode ExecUpdateLockMode(EState *estate, ResultRelInfo *relinfo);
@ -206,18 +208,6 @@ extern void EvalPlanQualSetPlan(EPQState *epqstate,
extern void EvalPlanQualSetTuple(EPQState *epqstate, Index rti,
HeapTuple tuple);
extern HeapTuple EvalPlanQualGetTuple(EPQState *epqstate, Index rti);
extern void ExecSetupPartitionTupleRouting(Relation rel,
Index resultRTindex,
EState *estate,
PartitionDispatch **pd,
ResultRelInfo ***partitions,
TupleConversionMap ***tup_conv_maps,
TupleTableSlot **partition_tuple_slot,
int *num_parted, int *num_partitions);
extern int ExecFindPartition(ResultRelInfo *resultRelInfo,
PartitionDispatch *pd,
TupleTableSlot *slot,
EState *estate);
#define EvalPlanQualSetSlot(epqstate, slot) ((epqstate)->origslot = (slot))
extern void EvalPlanQualFetchRowMarks(EPQState *epqstate);