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/*-------------------------------------------------------------------------- * gin.h * Public header file for Generalized Inverted Index access method. * * Copyright (c) 2006-2016, PostgreSQL Global Development Group * * src/include/access/gin.h *-------------------------------------------------------------------------- */ #ifndef GIN_H #define GIN_H #include "access/xlogreader.h" #include "lib/stringinfo.h" #include "storage/block.h" #include "utils/relcache.h" /* * amproc indexes for inverted indexes. */ #define GIN_COMPARE_PROC 1 #define GIN_EXTRACTVALUE_PROC 2 #define GIN_EXTRACTQUERY_PROC 3 #define GIN_CONSISTENT_PROC 4 #define GIN_COMPARE_PARTIAL_PROC 5 #define GIN_TRICONSISTENT_PROC 6 #define GINNProcs 6 /* * searchMode settings for extractQueryFn. */ #define GIN_SEARCH_MODE_DEFAULT 0 #define GIN_SEARCH_MODE_INCLUDE_EMPTY 1 #define GIN_SEARCH_MODE_ALL 2 #define GIN_SEARCH_MODE_EVERYTHING 3 /* for internal use only */ /* * GinStatsData represents stats data for planner use */ typedef struct GinStatsData { BlockNumber nPendingPages; BlockNumber nTotalPages; BlockNumber nEntryPages; BlockNumber nDataPages; int64 nEntries; int32 ginVersion; } GinStatsData; /* * A ternary value used by tri-consistent functions. * * For convenience, this is compatible with booleans. A boolean can be * safely cast to a GinTernaryValue. */ typedef char GinTernaryValue; #define GIN_FALSE 0 /* item is not present / does not match */ #define GIN_TRUE 1 /* item is present / matches */ #define GIN_MAYBE 2 /* don't know if item is present / don't know * if matches */ #define DatumGetGinTernaryValue(X) ((GinTernaryValue)(X)) #define GinTernaryValueGetDatum(X) ((Datum)(X)) #define PG_RETURN_GIN_TERNARY_VALUE(x) return GinTernaryValueGetDatum(x) /* GUC parameters */ extern PGDLLIMPORT int GinFuzzySearchLimit; extern int gin_pending_list_limit; /* ginutil.c */ extern void ginGetStats(Relation index, GinStatsData *stats); extern void ginUpdateStats(Relation index, const GinStatsData *stats); /* ginxlog.c */ extern void gin_redo(XLogReaderState *record); extern void gin_desc(StringInfo buf, XLogReaderState *record); extern const char *gin_identify(uint8 info); extern void gin_xlog_startup(void); extern void gin_xlog_cleanup(void); #endif /* GIN_H */