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/*-------------------------------------------------------------------------
*
* index.h
* prototypes for catalog/index.c.
*
*
* Portions Copyright (c) 1996-2020, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* src/include/catalog/index.h
*
*-------------------------------------------------------------------------
*/
#ifndef INDEX_H
#define INDEX_H
#include "catalog/objectaddress.h"
#include "nodes/execnodes.h"
#define DEFAULT_INDEX_TYPE "btree"
/* Action code for index_set_state_flags */
typedef enum
{
INDEX_CREATE_SET_READY,
INDEX_CREATE_SET_VALID,
INDEX_DROP_CLEAR_VALID,
INDEX_DROP_SET_DEAD
} IndexStateFlagsAction;
/* state info for validate_index bulkdelete callback */
typedef struct ValidateIndexState
{
Tuplesortstate *tuplesort; /* for sorting the index TIDs */
/* statistics (for debug purposes only): */
double htups,
itups,
tups_inserted;
} ValidateIndexState;
extern void index_check_primary_key(Relation heapRel,
IndexInfo *indexInfo,
bool is_alter_table,
IndexStmt *stmt);
#define INDEX_CREATE_IS_PRIMARY (1 << 0)
#define INDEX_CREATE_ADD_CONSTRAINT (1 << 1)
#define INDEX_CREATE_SKIP_BUILD (1 << 2)
#define INDEX_CREATE_CONCURRENT (1 << 3)
#define INDEX_CREATE_IF_NOT_EXISTS (1 << 4)
#define INDEX_CREATE_PARTITIONED (1 << 5)
#define INDEX_CREATE_INVALID (1 << 6)
extern Oid index_create(Relation heapRelation,
const char *indexRelationName,
Oid indexRelationId,
Oid parentIndexRelid,
Oid parentConstraintId,
Oid relFileNode,
IndexInfo *indexInfo,
List *indexColNames,
Oid accessMethodObjectId,
Oid tableSpaceId,
Oid *collationObjectId,
Oid *classObjectId,
int16 *coloptions,
Datum reloptions,
bits16 flags,
bits16 constr_flags,
bool allow_system_table_mods,
bool is_internal,
Oid *constraintId);
#define INDEX_CONSTR_CREATE_MARK_AS_PRIMARY (1 << 0)
#define INDEX_CONSTR_CREATE_DEFERRABLE (1 << 1)
#define INDEX_CONSTR_CREATE_INIT_DEFERRED (1 << 2)
#define INDEX_CONSTR_CREATE_UPDATE_INDEX (1 << 3)
#define INDEX_CONSTR_CREATE_REMOVE_OLD_DEPS (1 << 4)
extern Oid index_concurrently_create_copy(Relation heapRelation,
Oid oldIndexId,
const char *newName);
extern void index_concurrently_build(Oid heapRelationId,
Oid indexRelationId);
extern void index_concurrently_swap(Oid newIndexId,
Oid oldIndexId,
const char *oldName);
extern void index_concurrently_set_dead(Oid heapId,
Oid indexId);
extern ObjectAddress index_constraint_create(Relation heapRelation,
Oid indexRelationId,
Oid parentConstraintId,
IndexInfo *indexInfo,
const char *constraintName,
char constraintType,
bits16 constr_flags,
bool allow_system_table_mods,
bool is_internal);
extern void index_drop(Oid indexId, bool concurrent, bool concurrent_lock_mode);
extern IndexInfo *BuildIndexInfo(Relation index);
extern IndexInfo *BuildDummyIndexInfo(Relation index);
extern bool CompareIndexInfo(IndexInfo *info1, IndexInfo *info2,
Oid *collations1, Oid *collations2,
Oid *opfamilies1, Oid *opfamilies2,
AttrMap *attmap);
extern void BuildSpeculativeIndexInfo(Relation index, IndexInfo *ii);
extern void FormIndexDatum(IndexInfo *indexInfo,
TupleTableSlot *slot,
EState *estate,
Datum *values,
bool *isnull);
extern void index_build(Relation heapRelation,
Relation indexRelation,
IndexInfo *indexInfo,
bool isreindex,
bool parallel);
extern void validate_index(Oid heapId, Oid indexId, Snapshot snapshot);
extern void index_set_state_flags(Oid indexId, IndexStateFlagsAction action);
extern Oid IndexGetRelation(Oid indexId, bool missing_ok);
extern void reindex_index(Oid indexId, bool skip_constraint_checks,
char relpersistence, int options);
/* Flag bits for reindex_relation(): */
#define REINDEX_REL_PROCESS_TOAST 0x01
#define REINDEX_REL_SUPPRESS_INDEX_USE 0x02
#define REINDEX_REL_CHECK_CONSTRAINTS 0x04
#define REINDEX_REL_FORCE_INDEXES_UNLOGGED 0x08
#define REINDEX_REL_FORCE_INDEXES_PERMANENT 0x10
extern bool reindex_relation(Oid relid, int flags, int options);
extern bool ReindexIsProcessingHeap(Oid heapOid);
extern bool ReindexIsProcessingIndex(Oid indexOid);
extern void ResetReindexState(int nestLevel);
extern Size EstimateReindexStateSpace(void);
extern void SerializeReindexState(Size maxsize, char *start_address);
extern void RestoreReindexState(void *reindexstate);
extern void IndexSetParentIndex(Relation idx, Oid parentOid);
/*
* itemptr_encode - Encode ItemPointer as int64/int8
*
* This representation must produce values encoded as int64 that sort in the
* same order as their corresponding original TID values would (using the
* default int8 opclass to produce a result equivalent to the default TID
* opclass).
*
* As noted in validate_index(), this can be significantly faster.
*/
static inline int64
itemptr_encode(ItemPointer itemptr)
{
BlockNumber block = ItemPointerGetBlockNumber(itemptr);
OffsetNumber offset = ItemPointerGetOffsetNumber(itemptr);
int64 encoded;
/*
* Use the 16 least significant bits for the offset. 32 adjacent bits are
* used for the block number. Since remaining bits are unused, there
* cannot be negative encoded values (We assume a two's complement
* representation).
*/
encoded = ((uint64) block << 16) | (uint16) offset;
return encoded;
}
/*
* itemptr_decode - Decode int64/int8 representation back to ItemPointer
*/
static inline void
itemptr_decode(ItemPointer itemptr, int64 encoded)
{
BlockNumber block = (BlockNumber) (encoded >> 16);
OffsetNumber offset = (OffsetNumber) (encoded & 0xFFFF);
ItemPointerSet(itemptr, block, offset);
}
#endif /* INDEX_H */
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