Tweak StrategyEvaluation data structure to eliminate hardwired limit on

number of strategies supported by an index AM.  Add missing copyright
notices and CVS $Header$ markers to GIST source files.

src/backend/access/gist/gist.c

@@ -4,13 +4,14 @@
  *	  interface routines for the postgres GiST index access method.
  *
  *
+ * Portions Copyright (c) 1996-2001, PostgreSQL Global Development Group
+ * Portions Copyright (c) 1994, Regents of the University of California
  *
  * IDENTIFICATION
- *	  $Header: /cvsroot/pgsql/src/backend/access/gist/gist.c,v 1.76 2001/05/15 14:14:49 momjian Exp $
+ *	  $Header: /cvsroot/pgsql/src/backend/access/gist/gist.c,v 1.77 2001/05/30 19:53:39 tgl Exp $
  *
  *-------------------------------------------------------------------------
  */
-
 #include "postgres.h"
 
 #include "access/genam.h"
@@ -22,9 +23,9 @@
 #include "executor/executor.h"
 #include "miscadmin.h"
 #include "utils/syscache.h"
-
 #include "access/xlogutils.h"
 
+
 /* result's status */
 #define INSERTED	0x01
 #define SPLITED		0x02
@@ -78,9 +79,9 @@ static void gistcentryinit(GISTSTATE *giststate,
 			   OffsetNumber o, int b, bool l);
 
 #undef GISTDEBUG
+
 #ifdef GISTDEBUG
 static void gist_dumptree(Relation r, int level, BlockNumber blk, OffsetNumber coff);
-
 #endif
 
 /*

src/backend/access/gist/gistget.c

@@ -4,20 +4,20 @@
  *	  fetch tuples from a GiST scan.
  *
  *
+ * Portions Copyright (c) 1996-2001, PostgreSQL Global Development Group
+ * Portions Copyright (c) 1994, Regents of the University of California
  *
  * IDENTIFICATION
- *	  /usr/local/devel/pglite/cvs/src/backend/access/gisr/gistget.c,v 1.9.1 1996/11/21 01:00:00 vadim Exp
+ *	  $Header: /cvsroot/pgsql/src/backend/access/gist/gistget.c,v 1.27 2001/05/30 19:53:40 tgl Exp $
  *
  *-------------------------------------------------------------------------
  */
-
 #include "postgres.h"
 
 #include "access/gist.h"
 #include "executor/execdebug.h"
 
 
-
 static OffsetNumber gistfindnext(IndexScanDesc s, Page p, OffsetNumber n,
 			 ScanDirection dir);
 static RetrieveIndexResult gistscancache(IndexScanDesc s, ScanDirection dir);

src/backend/access/gist/gistscan.c

@@ -1,15 +1,17 @@
 /*-------------------------------------------------------------------------
  *
  * gistscan.c
- *	  routines to manage scans on index relations
+ *	  routines to manage scans on GiST index relations
  *
  *
+ * Portions Copyright (c) 1996-2001, PostgreSQL Global Development Group
+ * Portions Copyright (c) 1994, Regents of the University of California
+ *
  * IDENTIFICATION
- *	  /usr/local/devel/pglite/cvs/src/backend/access/gist/gistscan.c,v 1.7 1995/06/14 00:10:05 jolly Exp
+ *	  $Header: /cvsroot/pgsql/src/backend/access/gist/gistscan.c,v 1.34 2001/05/30 19:53:40 tgl Exp $
  *
  *-------------------------------------------------------------------------
  */
-
 #include "postgres.h"
 
 #include "access/genam.h"

src/backend/access/gist/giststrat.c

@@ -3,21 +3,21 @@
  * giststrat.c
  *	  strategy map data for GiSTs.
  *
+ *
  * Portions Copyright (c) 1996-2001, PostgreSQL Global Development Group
  * Portions Copyright (c) 1994, Regents of the University of California
  *
- *
  * IDENTIFICATION
- *	  /usr/local/devel/pglite/cvs/src/backend/access/gist/giststrat.c,v 1.4 1995/06/14 00:10:05 jolly Exp
+ *	  $Header: /cvsroot/pgsql/src/backend/access/gist/Attic/giststrat.c,v 1.17 2001/05/30 19:53:40 tgl Exp $
  *
  *-------------------------------------------------------------------------
  */
-
 #include "postgres.h"
 
 #include "access/gist.h"
 #include "access/istrat.h"
 
+
 /*
  *	Note:  negate, commute, and negatecommute all assume that operators are
  *		   ordered as follows in the strategy map:
@@ -71,6 +71,12 @@ static StrategyNumber GISTNegateCommute[GISTNStrategies] = {
  * TermData) -- such logic must be encoded in the user's Consistent function.
  */
 
+static StrategyExpression GISTEvaluationExpressions[GISTNStrategies] = {
+	NULL,
+	NULL,
+	NULL
+};
+
 /*
  *	If you were sufficiently attentive to detail, you would go through
  *	the ExpressionData pain above for every one of the strategies
@@ -92,9 +98,10 @@ static StrategyEvaluationData GISTEvaluationData = {
 	(StrategyTransformMap) GISTNegate,	/* how to do (not qual) */
 	(StrategyTransformMap) GISTCommute, /* how to swap operands */
 	(StrategyTransformMap) GISTNegateCommute,	/* how to do both */
-	{NULL}
+	GISTEvaluationExpressions
 };
 
+
 StrategyNumber
 RelationGetGISTStrategy(Relation r,
 						AttrNumber attnum,