Moved from backend/access to include/access

src/include/access/istrat.h

@@ -0,0 +1,80 @@
+/*-------------------------------------------------------------------------
+ *
+ * istrat.h--
+ *    POSTGRES index strategy definitions.
+ *
+ *
+ * Copyright (c) 1994, Regents of the University of California
+ *
+ * $Id: istrat.h,v 1.1 1996/08/27 21:50:17 scrappy Exp $
+ *
+ *-------------------------------------------------------------------------
+ */
+#ifndef	ISTRAT_H
+#define ISTRAT_H
+
+#include "postgres.h"
+#include "access/attnum.h"
+#include "access/skey.h"
+#include "access/strat.h"
+#include "utils/rel.h"		/* for Relation */
+
+/*
+ * StrategyNumberIsValid --
+ *	True iff the strategy number is valid.
+ */
+#define StrategyNumberIsValid(strategyNumber) \
+    ((bool) ((strategyNumber) != InvalidStrategy))
+
+/*
+ * StrategyNumberIsInBounds --
+ *	True iff strategy number is within given bounds.
+ *
+ * Note:
+ *	Assumes StrategyNumber is an unsigned type.
+ *	Assumes the bounded interval to be (0,max].
+ */
+#define StrategyNumberIsInBounds(strategyNumber, maxStrategyNumber) \
+    ((bool)(InvalidStrategy < (strategyNumber) && \
+	    (strategyNumber) <= (maxStrategyNumber)))
+
+/*
+ * StrategyMapIsValid --
+ *	True iff the index strategy mapping is valid.
+ */
+#define	StrategyMapIsValid(map) PointerIsValid(map)
+
+/*
+ * IndexStrategyIsValid --
+ *	True iff the index strategy is valid.
+ */
+#define	IndexStrategyIsValid(s)	PointerIsValid(s)
+
+extern ScanKey StrategyMapGetScanKeyEntry(StrategyMap map,
+					  StrategyNumber strategyNumber);
+extern StrategyMap IndexStrategyGetStrategyMap(IndexStrategy indexStrategy,
+	StrategyNumber maxStrategyNum, AttrNumber attrNum);
+
+extern Size
+AttributeNumberGetIndexStrategySize(AttrNumber maxAttributeNumber,
+				    StrategyNumber maxStrategyNumber);
+extern bool StrategyOperatorIsValid(StrategyOperator operator,
+				    StrategyNumber maxStrategy);
+extern bool StrategyTermIsValid(StrategyTerm term,
+				StrategyNumber maxStrategy);
+extern bool StrategyExpressionIsValid(StrategyExpression expression,
+				      StrategyNumber maxStrategy);
+extern bool StrategyEvaluationIsValid(StrategyEvaluation evaluation);
+extern StrategyNumber RelationGetStrategy(Relation relation,
+	AttrNumber attributeNumber, StrategyEvaluation evaluation,
+	RegProcedure procedure);
+extern bool RelationInvokeStrategy(Relation relation,
+	StrategyEvaluation evaluation, AttrNumber attributeNumber,
+	StrategyNumber strategy, Datum left, Datum right);
+extern void IndexSupportInitialize(IndexStrategy indexStrategy,
+	RegProcedure *indexSupport, Oid indexObjectId,
+	Oid accessMethodObjectId, StrategyNumber maxStrategyNumber,
+	StrategyNumber maxSupportNumber, AttrNumber maxAttributeNumber);
+
+
+#endif	/* ISTRAT_H */