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