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/*-------------------------------------------------------------------------
*
* partition.h
* Header file for structures and utility functions related to
* partitioning
*
* Copyright (c) 2007-2018, PostgreSQL Global Development Group
*
* src/include/catalog/partition.h
*
*-------------------------------------------------------------------------
*/
#ifndef PARTITION_H
#define PARTITION_H
#include "fmgr.h"
#include "executor/tuptable.h"
#include "nodes/execnodes.h"
#include "parser/parse_node.h"
#include "utils/rel.h"
/* Seed for the extended hash function */
#define HASH_PARTITION_SEED UINT64CONST(0x7A5B22367996DCFD)
/*
* PartitionBoundInfo encapsulates a set of partition bounds. It is usually
* associated with partitioned tables as part of its partition descriptor.
*
* The internal structure is opaque outside partition.c.
*/
typedef struct PartitionBoundInfoData *PartitionBoundInfo;
/*
* Information about partitions of a partitioned table.
*/
typedef struct PartitionDescData
{
int nparts; /* Number of partitions */
Oid *oids; /* OIDs of partitions */
PartitionBoundInfo boundinfo; /* collection of partition bounds */
} PartitionDescData;
typedef struct PartitionDescData *PartitionDesc;
extern void RelationBuildPartitionDesc(Relation relation);
extern bool partition_bounds_equal(int partnatts, int16 *parttyplen,
bool *parttypbyval, PartitionBoundInfo b1,
PartitionBoundInfo b2);
extern PartitionBoundInfo partition_bounds_copy(PartitionBoundInfo src,
PartitionKey key);
extern void check_new_partition_bound(char *relname, Relation parent,
PartitionBoundSpec *spec);
extern Oid get_partition_parent(Oid relid);
extern List *get_partition_ancestors(Oid relid);
extern List *get_qual_from_partbound(Relation rel, Relation parent,
PartitionBoundSpec *spec);
extern List *map_partition_varattnos(List *expr, int fromrel_varno,
Relation to_rel, Relation from_rel,
bool *found_whole_row);
extern List *RelationGetPartitionQual(Relation rel);
extern Expr *get_partition_qual_relid(Oid relid);
extern bool has_partition_attrs(Relation rel, Bitmapset *attnums,
bool *used_in_expr);
extern Oid get_default_oid_from_partdesc(PartitionDesc partdesc);
extern Oid get_default_partition_oid(Oid parentId);
extern void update_default_partition_oid(Oid parentId, Oid defaultPartId);
extern void check_default_allows_bound(Relation parent, Relation defaultRel,
PartitionBoundSpec *new_spec);
extern List *get_proposed_default_constraint(List *new_part_constaints);
/* For tuple routing */
extern int get_partition_for_tuple(Relation relation, Datum *values,
bool *isnull);
#endif /* PARTITION_H */
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