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/*-------------------------------------------------------------------------
*
* partcache.h
*
* Copyright (c) 1996-2021, PostgreSQL Global Development Group
*
* src/include/utils/partcache.h
*
*-------------------------------------------------------------------------
*/
#ifndef PARTCACHE_H
#define PARTCACHE_H
#include "access/attnum.h"
#include "fmgr.h"
#include "nodes/pg_list.h"
#include "nodes/primnodes.h"
#include "partitioning/partdefs.h"
#include "utils/relcache.h"
/*
* Information about the partition key of a relation
*/
typedef struct PartitionKeyData
{
char strategy; /* partitioning strategy */
int16 partnatts; /* number of columns in the partition key */
AttrNumber *partattrs; /* attribute numbers of columns in the
* partition key or 0 if it's an expr */
List *partexprs; /* list of expressions in the partitioning
* key, one for each zero-valued partattrs */
Oid *partopfamily; /* OIDs of operator families */
Oid *partopcintype; /* OIDs of opclass declared input data types */
FmgrInfo *partsupfunc; /* lookup info for support funcs */
/* Partitioning collation per attribute */
Oid *partcollation;
/* Type information per attribute */
Oid *parttypid;
int32 *parttypmod;
int16 *parttyplen;
bool *parttypbyval;
char *parttypalign;
Oid *parttypcoll;
} PartitionKeyData;
extern PartitionKey RelationGetPartitionKey(Relation rel);
extern List *RelationGetPartitionQual(Relation rel);
extern Expr *get_partition_qual_relid(Oid relid);
/*
* PartitionKey inquiry functions
*/
static inline int
get_partition_strategy(PartitionKey key)
{
return key->strategy;
}
static inline int
get_partition_natts(PartitionKey key)
{
return key->partnatts;
}
static inline List *
get_partition_exprs(PartitionKey key)
{
return key->partexprs;
}
/*
* PartitionKey inquiry functions - one column
*/
static inline int16
get_partition_col_attnum(PartitionKey key, int col)
{
return key->partattrs[col];
}
static inline Oid
get_partition_col_typid(PartitionKey key, int col)
{
return key->parttypid[col];
}
static inline int32
get_partition_col_typmod(PartitionKey key, int col)
{
return key->parttypmod[col];
}
static inline Oid
get_partition_col_collation(PartitionKey key, int col)
{
return key->partcollation[col];
}
#endif /* PARTCACHE_H */
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