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4e5fe9ad19
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
66 lines
2.2 KiB
C
66 lines
2.2 KiB
C
/*--------------------------------------------------------------------
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* execPartition.h
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* POSTGRES partitioning executor interface
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*
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* Portions Copyright (c) 1996-2017, PostgreSQL Global Development Group
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* Portions Copyright (c) 1994, Regents of the University of California
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*
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* IDENTIFICATION
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* src/include/executor/execPartition.h
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*--------------------------------------------------------------------
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*/
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#ifndef EXECPARTITION_H
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#define EXECPARTITION_H
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#include "catalog/partition.h"
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#include "nodes/execnodes.h"
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#include "nodes/parsenodes.h"
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#include "nodes/plannodes.h"
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/*-----------------------
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* PartitionDispatch - information about one partitioned table in a partition
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* hierarchy required to route a tuple to one of its partitions
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*
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* reldesc Relation descriptor of the table
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* key Partition key information of the table
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* keystate Execution state required for expressions in the partition key
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* partdesc Partition descriptor of the table
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* tupslot A standalone TupleTableSlot initialized with this table's tuple
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* descriptor
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* tupmap TupleConversionMap to convert from the parent's rowtype to
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* this table's rowtype (when extracting the partition key of a
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* tuple just before routing it through this table)
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* indexes Array with partdesc->nparts members (for details on what
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* individual members represent, see how they are set in
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* get_partition_dispatch_recurse())
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*-----------------------
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*/
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typedef struct PartitionDispatchData
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{
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Relation reldesc;
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PartitionKey key;
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List *keystate; /* list of ExprState */
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PartitionDesc partdesc;
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TupleTableSlot *tupslot;
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TupleConversionMap *tupmap;
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int *indexes;
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} PartitionDispatchData;
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typedef struct PartitionDispatchData *PartitionDispatch;
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extern void ExecSetupPartitionTupleRouting(Relation rel,
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Index resultRTindex,
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EState *estate,
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PartitionDispatch **pd,
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ResultRelInfo ***partitions,
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TupleConversionMap ***tup_conv_maps,
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TupleTableSlot **partition_tuple_slot,
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int *num_parted, int *num_partitions);
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extern int ExecFindPartition(ResultRelInfo *resultRelInfo,
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PartitionDispatch *pd,
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TupleTableSlot *slot,
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EState *estate);
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#endif /* EXECPARTITION_H */
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