>From b25a8f57cb71389bbe823b3c9e2f13440176aad9 Mon Sep 17 00:00:00 2001
From: Andres Freund <andres@anarazel.de>
Date: Wed, 7 May 2014 01:05:57 +0200
Subject: [PATCH] Support for hash and btree operators for pg_lsn datatype.

Michael Paquier with fixes from Andres Freund.
---
 src/backend/utils/adt/pg_lsn.c    | 22 ++++++++++++++++++++++
 src/include/catalog/pg_amop.h     | 12 ++++++++++++
 src/include/catalog/pg_amproc.h   |  2 ++
 src/include/catalog/pg_opclass.h  |  2 ++
 src/include/catalog/pg_operator.h |  2 +-
 src/include/catalog/pg_opfamily.h |  2 ++
 src/include/catalog/pg_proc.h     |  4 ++++
 src/include/utils/pg_lsn.h        |  2 ++
 8 files changed, 47 insertions(+), 1 deletion(-)

diff --git a/src/backend/utils/adt/pg_lsn.c b/src/backend/utils/adt/pg_lsn.c
index d1448ae..c021a1e 100644
--- a/src/backend/utils/adt/pg_lsn.c
+++ b/src/backend/utils/adt/pg_lsn.c
@@ -14,6 +14,7 @@
 #include "postgres.h"
 
 #include "funcapi.h"
+#include "access/hash.h"
 #include "libpq/pqformat.h"
 #include "utils/builtins.h"
 #include "utils/pg_lsn.h"
@@ -153,6 +154,27 @@ pg_lsn_ge(PG_FUNCTION_ARGS)
 	PG_RETURN_BOOL(lsn1 >= lsn2);
 }
 
+/* handler for btree index operator */
+Datum
+pg_lsn_cmp(PG_FUNCTION_ARGS)
+{
+	XLogRecPtr a = PG_GETARG_LSN(0);
+	XLogRecPtr b = PG_GETARG_LSN(1);
+
+	if (a > b)
+		PG_RETURN_INT32(1);
+	else if (a == b)
+		PG_RETURN_INT32(0);
+	else
+		PG_RETURN_INT32(-1);
+}
+
+/* hash index support */
+Datum
+pg_lsn_hash(PG_FUNCTION_ARGS)
+{
+	return DirectFunctionCall1(hashint8, PG_GETARG_LSN(0));
+}
 
 /*----------------------------------------------------------
  *	Arithmetic operators on PostgreSQL LSNs.
diff --git a/src/include/catalog/pg_amop.h b/src/include/catalog/pg_amop.h
index 8efd3be..5cd170d 100644
--- a/src/include/catalog/pg_amop.h
+++ b/src/include/catalog/pg_amop.h
@@ -513,6 +513,16 @@ DATA(insert (	2968  2950 2950 4 s 2977	403 0 ));
 DATA(insert (	2968  2950 2950 5 s 2975	403 0 ));
 
 /*
+ * btree pglsn_ops
+ */
+
+DATA(insert (	3260  3220 3220 1 s 3224	403 0 ));
+DATA(insert (	3260  3220 3220 2 s 3226	403 0 ));
+DATA(insert (	3260  3220 3220 3 s 3222	403 0 ));
+DATA(insert (	3260  3220 3220 4 s 3227	403 0 ));
+DATA(insert (	3260  3220 3220 5 s 3225	403 0 ));
+
+/*
  *	hash index _ops
  */
 
@@ -581,6 +591,8 @@ DATA(insert (	2231   1042 1042 1 s 1054 405 0 ));
 DATA(insert (	2235   1033 1033 1 s  974 405 0 ));
 /* uuid_ops */
 DATA(insert (	2969   2950 2950 1 s 2972 405 0 ));
+/* pglsn_ops */
+DATA(insert (	3261   3220 3220 1 s 3222 405 0 ));
 /* numeric_ops */
 DATA(insert (	1998   1700 1700 1 s 1752 405 0 ));
 /* array_ops */
diff --git a/src/include/catalog/pg_amproc.h b/src/include/catalog/pg_amproc.h
index 198b126..369adb9 100644
--- a/src/include/catalog/pg_amproc.h
+++ b/src/include/catalog/pg_amproc.h
@@ -134,6 +134,7 @@ DATA(insert (	2789   27 27 1 2794 ));
 DATA(insert (	2968   2950 2950 1 2960 ));
 DATA(insert (	2994   2249 2249 1 2987 ));
 DATA(insert (	3194   2249 2249 1 3187 ));
+DATA(insert (	3260   3220 3220 1 3263 ));
 DATA(insert (	3522   3500 3500 1 3514 ));
 DATA(insert (	3626   3614 3614 1 3622 ));
 DATA(insert (	3683   3615 3615 1 3668 ));
@@ -174,6 +175,7 @@ DATA(insert (	2229   25 25 1 400 ));
 DATA(insert (	2231   1042 1042 1 1080 ));
 DATA(insert (	2235   1033 1033 1 329 ));
 DATA(insert (	2969   2950 2950 1 2963 ));
+DATA(insert (	3261   3220 3220 1 3262 ));
 DATA(insert (	3523   3500 3500 1 3515 ));
 DATA(insert (	3903   3831 3831 1 3902 ));
 DATA(insert (	4034   3802 3802 1 4045 ));
diff --git a/src/include/catalog/pg_opclass.h b/src/include/catalog/pg_opclass.h
index ecf7063..9a45244 100644
--- a/src/include/catalog/pg_opclass.h
+++ b/src/include/catalog/pg_opclass.h
@@ -215,6 +215,8 @@ DATA(insert (	2742	_reltime_ops		PGNSP PGUID 2745  1024 t 703 ));
 DATA(insert (	2742	_tinterval_ops		PGNSP PGUID 2745  1025 t 704 ));
 DATA(insert (	403		uuid_ops			PGNSP PGUID 2968  2950 t 0 ));
 DATA(insert (	405		uuid_ops			PGNSP PGUID 2969  2950 t 0 ));
+DATA(insert (	403		pglsn_ops			PGNSP PGUID 3260  3220 t 0 ));
+DATA(insert (	405		pglsn_ops			PGNSP PGUID 3261  3220 t 0 ));
 DATA(insert (	403		enum_ops			PGNSP PGUID 3522  3500 t 0 ));
 DATA(insert (	405		enum_ops			PGNSP PGUID 3523  3500 t 0 ));
 DATA(insert (	403		tsvector_ops		PGNSP PGUID 3626  3614 t 0 ));
diff --git a/src/include/catalog/pg_operator.h b/src/include/catalog/pg_operator.h
index f280af4..87ee4eb 100644
--- a/src/include/catalog/pg_operator.h
+++ b/src/include/catalog/pg_operator.h
@@ -1595,7 +1595,7 @@ DATA(insert OID = 2977 (  ">="	   PGNSP PGUID b f f 2950 2950 16 2976 2974 uuid_
 DESCR("greater than or equal");
 
 /* pg_lsn operators */
-DATA(insert OID = 3222 (  "="	   PGNSP PGUID b f f 3220 3220 16 3222 3223 pg_lsn_eq eqsel eqjoinsel ));
+DATA(insert OID = 3222 (  "="	   PGNSP PGUID b t t 3220 3220 16 3222 3223 pg_lsn_eq eqsel eqjoinsel ));
 DESCR("equal");
 DATA(insert OID = 3223 (  "<>"	   PGNSP PGUID b f f 3220 3220 16 3223 3222 pg_lsn_ne neqsel neqjoinsel ));
 DESCR("not equal");
diff --git a/src/include/catalog/pg_opfamily.h b/src/include/catalog/pg_opfamily.h
index 9e8f4ac..29089d5 100644
--- a/src/include/catalog/pg_opfamily.h
+++ b/src/include/catalog/pg_opfamily.h
@@ -134,6 +134,8 @@ DATA(insert OID = 1029 (	783		point_ops		PGNSP PGUID ));
 DATA(insert OID = 2745 (	2742	array_ops		PGNSP PGUID ));
 DATA(insert OID = 2968 (	403		uuid_ops		PGNSP PGUID ));
 DATA(insert OID = 2969 (	405		uuid_ops		PGNSP PGUID ));
+DATA(insert OID = 3260 (	403		pglsn_ops		PGNSP PGUID ));
+DATA(insert OID = 3261 (	405		pglsn_ops		PGNSP PGUID ));
 DATA(insert OID = 3522 (	403		enum_ops		PGNSP PGUID ));
 DATA(insert OID = 3523 (	405		enum_ops		PGNSP PGUID ));
 DATA(insert OID = 3626 (	403		tsvector_ops	PGNSP PGUID ));
diff --git a/src/include/catalog/pg_proc.h b/src/include/catalog/pg_proc.h
index b59cfee..5f045fe 100644
--- a/src/include/catalog/pg_proc.h
+++ b/src/include/catalog/pg_proc.h
@@ -4297,6 +4297,10 @@ DATA(insert OID = 3238 (  pg_lsn_recv	PGNSP PGUID 12 1 0 0 0 f f f f t f i 1 0 3
 DESCR("I/O");
 DATA(insert OID = 3239 (  pg_lsn_send	PGNSP PGUID 12 1 0 0 0 f f f f t f i 1 0 17 "3220" _null_ _null_ _null_ _null_ pg_lsn_send _null_ _null_ _null_ ));
 DESCR("I/O");
+DATA(insert OID = 3262 (  pg_lsn_hash	PGNSP PGUID 12 1 0 0 0 f f f f t f i 1 0 23 "3220" _null_ _null_ _null_ _null_ pg_lsn_hash _null_ _null_ _null_ ));
+DESCR("hash");
+DATA(insert OID = 3263 (  pg_lsn_cmp	PGNSP PGUID 12 1 0 0 0 f f f f t f i 2 0 23 "3220 3220" _null_ _null_ _null_ _null_ pg_lsn_cmp _null_ _null_ _null_ ));
+DESCR("less-equal-greater");
 
 /* enum related procs */
 DATA(insert OID = 3504 (  anyenum_in	PGNSP PGUID 12 1 0 0 0 f f f f t f i 1 0 3500 "2275" _null_ _null_ _null_ _null_ anyenum_in _null_ _null_ _null_ ));
diff --git a/src/include/utils/pg_lsn.h b/src/include/utils/pg_lsn.h
index 981fcd6..7dd932d 100644
--- a/src/include/utils/pg_lsn.h
+++ b/src/include/utils/pg_lsn.h
@@ -29,6 +29,8 @@ extern Datum pg_lsn_lt(PG_FUNCTION_ARGS);
 extern Datum pg_lsn_gt(PG_FUNCTION_ARGS);
 extern Datum pg_lsn_le(PG_FUNCTION_ARGS);
 extern Datum pg_lsn_ge(PG_FUNCTION_ARGS);
+extern Datum pg_lsn_cmp(PG_FUNCTION_ARGS);
+extern Datum pg_lsn_hash(PG_FUNCTION_ARGS);
 
 extern Datum pg_lsn_mi(PG_FUNCTION_ARGS);
 
-- 
1.8.5.rc2.dirty

