1 files changed, 170 insertions, 0 deletions
diff --git a/src/include/utils/rel.h b/src/include/utils/rel.h
new file mode 100644
index 00000000000..c848ae138eb
--- /dev/null
+++ b/src/include/utils/rel.h
@@ -0,0 +1,170 @@
+/*-------------------------------------------------------------------------
+ *
+ * rel.h--
+ *    POSTGRES relation descriptor definitions.
+ *
+ *
+ * Copyright (c) 1994, Regents of the University of California
+ *
+ * $Id: rel.h,v 1.1 1996/08/28 01:59:21 scrappy Exp $
+ *
+ *-------------------------------------------------------------------------
+ */
+#ifndef	REL_H
+#define REL_H
+
+#include "postgres.h"
+
+#include "storage/fd.h"
+#include "access/strat.h"	
+#include "access/tupdesc.h"
+
+#include "catalog/pg_am.h"
+#include "catalog/pg_operator.h"
+#include "catalog/pg_class.h"
+
+#include "rewrite/prs2lock.h"
+
+typedef struct RelationData {
+    File		rd_fd; 		/* open file descriptor */
+    int                 rd_nblocks;	/* number of blocks in rel */
+    uint16		rd_refcnt; 	/* reference count */
+    bool		rd_islocal; 	/* uses the local buffer mgr */
+    bool		rd_isnailed; 	/* rel is nailed in cache */
+    Form_pg_am 		rd_am; 		/* AM tuple */
+    Form_pg_class	rd_rel;		/* RELATION tuple */
+    Oid			rd_id;		/* relations's object id */
+    Pointer		lockInfo; 	/* ptr. to misc. info. */
+    TupleDesc           rd_att;		/* tuple desciptor */
+    RuleLock		*rd_rules;	/* rewrite rules */
+    IndexStrategy       rd_istrat;    
+    RegProcedure*       rd_support;
+} RelationData;
+
+typedef RelationData	*Relation;
+
+/* ----------------
+ *	RelationPtr is used in the executor to support index scans
+ *	where we have to keep track of several index relations in an
+ *	array.  -cim 9/10/89
+ * ----------------
+ */
+typedef Relation	*RelationPtr;
+
+#define InvalidRelation	((Relation)NULL)
+
+typedef char	ArchiveMode;
+
+/*
+ * RelationIsValid --
+ *	True iff relation descriptor is valid.
+ */
+#define	RelationIsValid(relation) PointerIsValid(relation)
+
+/*
+ * RelationGetSystemPort --
+ *	Returns system port of a relation.
+ *
+ * Note:
+ *	Assumes relation descriptor is valid.
+ */
+#define RelationGetSystemPort(relation) ((relation)->rd_fd)
+
+/*
+ * RelationGetLockInfo --
+ *      Returns the lock information structure in the reldesc
+ *
+ */
+#define RelationGetLockInfo(relation) ((relation)->lockInfo)
+
+/*
+ * RelationHasReferenceCountZero --
+ *	True iff relation reference count is zero.
+ *
+ * Note:
+ *	Assumes relation descriptor is valid.
+ */
+#define RelationHasReferenceCountZero(relation) \
+	((bool)((relation)->rd_refcnt == 0))
+
+/*
+ * RelationSetReferenceCount --
+ *	Sets relation reference count.
+ */
+#define RelationSetReferenceCount(relation,count) ((relation)->rd_refcnt = count)
+
+/*
+ * RelationIncrementReferenceCount --
+ *	Increments relation reference count.
+ */
+#define RelationIncrementReferenceCount(relation) ((relation)->rd_refcnt += 1);
+
+/*
+ * RelationDecrementReferenceCount --
+ *	Decrements relation reference count.
+ */
+#define RelationDecrementReferenceCount(relation) ((relation)->rd_refcnt -= 1)
+
+/*
+ * RelationGetAccessMethodTupleForm --
+ *	Returns access method attribute values for a relation.
+ *
+ * Note:
+ *	Assumes relation descriptor is valid.
+ */
+#define RelationGetAccessMethodTupleForm(relation) ((relation)->rd_am)
+
+/*
+ * RelationGetRelationTupleForm --
+ *	Returns relation attribute values for a relation.
+ *
+ * Note:
+ *	Assumes relation descriptor is valid.
+ */
+#define RelationGetRelationTupleForm(relation) ((relation)->rd_rel)
+
+
+/* 
+ * RelationGetRelationId --
+ *
+ *  returns the object id of the relation
+ *
+ */
+#define RelationGetRelationId(relation) ((relation)->rd_id)
+
+/*
+ * RelationGetFile --
+ *
+ *    Returns the open File decscriptor
+ */
+#define RelationGetFile(relation) ((relation)->rd_fd)
+
+
+/*
+ * RelationGetRelationName --
+ *
+ *    Returns a Relation Name
+ */
+#define RelationGetRelationName(relation) (&(relation)->rd_rel->relname)
+
+/*
+ * RelationGetRelationName --
+ *
+ *    Returns a the number of attributes.
+ */
+#define RelationGetNumberOfAttributes(relation) ((relation)->rd_rel->relnatts)
+
+/*
+ * RelationGetTupleDescriptor --
+ *	Returns tuple descriptor for a relation.
+ *
+ * Note:
+ *	Assumes relation descriptor is valid.
+ */
+#define RelationGetTupleDescriptor(relation) ((relation)->rd_att)
+
+extern IndexStrategy RelationGetIndexStrategy(Relation relation);
+
+extern void RelationSetIndexSupport(Relation relation, IndexStrategy strategy,
+			     RegProcedure *support);
+#endif	/* REL_H */