/*-------------------------------------------------------------------------
 *
 * 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 "partitioning/partdefs.h"
#include "utils/relcache.h"

/* Seed for the extended hash function */
#define HASH_PARTITION_SEED UINT64CONST(0x7A5B22367996DCFD)

/*
 * Information about partitions of a partitioned table.
 */
typedef struct PartitionDescData
{
	int			nparts;			/* Number of partitions */
	Oid		   *oids;			/* Array of 'nparts' elements containing
								 * partition OIDs in order of the their bounds */
	bool	   *is_leaf;		/* Array of 'nparts' elements storing whether
								 * the corresponding 'oids' element belongs to
								 * a leaf partition or not */
	PartitionBoundInfo boundinfo;	/* collection of partition bounds */
} PartitionDescData;

extern Oid	get_partition_parent(Oid relid);
extern List *get_partition_ancestors(Oid relid);
extern List *map_partition_varattnos(List *expr, int fromrel_varno,
						Relation to_rel, Relation from_rel,
						bool *found_whole_row);
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 List *get_proposed_default_constraint(List *new_part_constaints);

#endif							/* PARTITION_H */
