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Diffstat (limited to 'src/include/catalog/index.h')
| -rw-r--r-- | src/include/catalog/index.h | 199 |
1 files changed, 199 insertions, 0 deletions
diff --git a/src/include/catalog/index.h b/src/include/catalog/index.h new file mode 100644 index 0000000..f58e867 --- /dev/null +++ b/src/include/catalog/index.h @@ -0,0 +1,199 @@ +/*------------------------------------------------------------------------- + * + * 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 */ |