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Reorganize partitioning code

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There's been a massive addition of partitioning code in PostgreSQL 11,
with little oversight on its placement, resulting in a
catalog/partition.c with poorly defined boundaries and responsibilities.
This commit tries to set a couple of distinct modules to separate things
a little bit.  There are no code changes here, only code movement.

There are three new files:
  src/backend/utils/cache/partcache.c
  src/include/partitioning/partdefs.h
  src/include/utils/partcache.h

The previous arrangement of #including catalog/partition.h almost
everywhere is no more.

Authors: Amit Langote and Álvaro Herrera
Discussion: https://postgr.es/m/98e8d509-790a-128c-be7f-e48a5b2d8d97@lab.ntt.co.jp
	https://postgr.es/m/11aa0c50-316b-18bb-722d-c23814f39059@lab.ntt.co.jp
	https://postgr.es/m/143ed9a4-6038-76d4-9a55-502035815e68@lab.ntt.co.jp
	https://postgr.es/m/20180413193503.nynq7bnmgh6vs5vm@alvherre.pgsql
This commit is contained in:
Alvaro Herrera
2018-04-14 21:12:14 -03:00
parent b39fd897e0
commit da6f3e45dd
32 changed files with 3587 additions and 3479 deletions
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96
src/include/utils/partcache.h Normal file
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@@ -0,0 +1,96 @@
/*-------------------------------------------------------------------------
*
* partcache.h
*
* Copyright (c) 1996-2018, 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 */
List *partexprs; /* list of expressions in the partitioning
* key, or NIL */
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 void RelationBuildPartitionKey(Relation relation);
extern void RelationBuildPartitionDesc(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];
}
#endif /* PARTCACHE_H */