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/*--------------------------------------------------------------------------
* gin.h
* Public header file for Generalized Inverted Index access method.
*
* Copyright (c) 2006-2012, PostgreSQL Global Development Group
*
* src/include/access/gin.h
*--------------------------------------------------------------------------
*/
#ifndef GIN_H
#define GIN_H
#include "access/xlog.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 GINNProcs 5
/*
* 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;
/* GUC parameter */
extern PGDLLIMPORT int GinFuzzySearchLimit;
/* ginutil.c */
extern void ginGetStats(Relation index, GinStatsData *stats);
extern void ginUpdateStats(Relation index, const GinStatsData *stats);
/* ginxlog.c */
extern void gin_redo(XLogRecPtr lsn, XLogRecord *record);
extern void gin_desc(StringInfo buf, uint8 xl_info, char *rec);
extern void gin_xlog_startup(void);
extern void gin_xlog_cleanup(void);
extern bool gin_safe_restartpoint(void);
#endif /* GIN_H */
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