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pg_include/access/gin.h

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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 */