New contrib module for BTREE emulation in GiST.

From Oleg Bartunov and Teodor Sigaev.

contrib/Makefile

-# $Header: /cvsroot/pgsql/contrib/Makefile,v 1.23 2001/07/06 23:07:19 petere Exp $
+# $Header: /cvsroot/pgsql/contrib/Makefile,v 1.24 2001/08/22 18:27:53 tgl Exp $
 
 subdir = contrib
 top_builddir = ..
@@ -6,18 +6,19 @@ include $(top_builddir)/src/Makefile.global
 
 WANTED_DIRS = \
 		array		\
+		btree_gist	\
 		cube		\
 		dbase		\
 		dblink		\
 		earthdistance	\
 		findoidjoins	\
 		fulltextindex	\
+		fuzzystrmatch	\
 		intarray	\
 		isbn_issn	\
 		lo		\
 		mSQL-interface	\
 		mac		\
-		metaphone	\
 		miscutil	\
 		noupdate	\
 		oid2name	\
@@ -30,7 +31,6 @@ WANTED_DIRS = \
 		rserv		\
 		rtree_gist	\
 		seg		\
-		soundex		\
 		spi		\
 		string		\
 		tips		\

contrib/README

@@ -30,6 +30,14 @@ array -
 	Array iterator functions
 	by Massimo Dal Zotto <dz@cs.unitn.it>
 
+btree_gist -
+	Support for emulating BTREE indexing in GiST
+	by Oleg Bartunov <oleg@sai.msu.su> and Teodor Sigaev <teodor@stack.net>
+
+chkpass -
+	An auto-encrypted password datatype
+	by D'Arcy J.M. Cain <darcy@druid.net>
+
 cube -
 	Multidimensional-cube datatype (GiST indexing example)
 	by Gene Selkov, Jr. <selkovjr@mcs.anl.gov>

contrib/btree_gist/Makefile

+subdir = contrib/btree_gist
+top_builddir = ../..
+include $(top_builddir)/src/Makefile.global
+
+# override libdir to install shlib in contrib not main directory
+libdir := $(libdir)/contrib
+
+# shared library parameters
+NAME= btree_gist
+SO_MAJOR_VERSION= 1
+SO_MINOR_VERSION= 0
+
+override CPPFLAGS += -I$(srcdir)
+
+OBJS= btree_gist.o
+
+all: all-lib $(NAME).sql
+
+# Shared library stuff
+include $(top_srcdir)/src/Makefile.shlib
+
+
+$(NAME).sql: $(NAME).sql.in
+	sed -e 's:MODULE_PATHNAME:$(libdir)/$(shlib):g' < $< > $@
+
+.PHONY: submake
+submake:
+	$(MAKE) -C $(top_builddir)/src/test/regress pg_regress
+
+# against installed postmaster
+installcheck: submake
+	$(top_builddir)/src/test/regress/pg_regress btree_gist
+
+# in-tree test doesn't work yet (no way to install my shared library)
+#check: all submake
+#	$(top_builddir)/src/test/regress/pg_regress --temp-install \
+#	  --top-builddir=$(top_builddir) btree_gist
+check:
+	@echo "'make check' is not supported."
+	@echo "Do 'make install', then 'make installcheck' instead."
+
+install: all installdirs install-lib
+	#$(INSTALL_DATA) $(srcdir)/README.$(NAME)  $(docdir)/contrib
+	$(INSTALL_DATA) $(NAME).sql $(datadir)/contrib
+
+installdirs:
+	$(mkinstalldirs) $(docdir)/contrib $(datadir)/contrib $(libdir)
+
+uninstall: uninstall-lib
+	rm -f $(docdir)/contrib/README.$(NAME) $(datadir)/contrib/$(NAME).sql
+
+clean distclean maintainer-clean: clean-lib
+	rm -f *.so y.tab.c y.tab.h $(OBJS) $(NAME).sql
+# things created by various check targets
+	rm -rf results tmp_check log
+	rm -f regression.diffs regression.out regress.out run_check.out
+ifeq ($(PORTNAME), win)
+	rm -f regress.def
+endif
+
+depend dep:
+	$(CC) -MM $(CFLAGS) *.c >depend
+
+ifeq (depend,$(wildcard depend))
+include depend
+endif

contrib/btree_gist/README.btree_gist

+This is B-Tree implementation using GiST for int4 and 
+timestamp types.
+
+All work was done by Teodor Sigaev (teodor@stack.net) and Oleg Bartunov
+(oleg@sai.msu.su). See http://www.sai.msu.su/~megera/postgres/gist
+for additional information.
+
+NOTICE:
+     This version will works only with postgresql version 7.2 and above
+     because of changes in interface of function calling and in system
+     tables.
+
+INSTALLATION:
+
+  gmake
+  gmake install
+  -- load functions
+  psql <database> < btree_gist.sql
+
+REGRESSION TEST:
+
+   gmake installcheck
+
+EXAMPLE USAGE:
+
+   create table test (a int4);
+   -- create index
+   create index testidx on test using gist (a);
+   -- query
+   select * from test where a < 10;
+

contrib/btree_gist/btree_gist.sql.in

+begin transaction;
+-- create type of int4 key
+
+CREATE FUNCTION int4key_in(opaque)
+RETURNS opaque
+AS 'MODULE_PATHNAME'
+LANGUAGE 'c' with (isstrict);
+
+CREATE FUNCTION int4key_out(opaque)
+RETURNS opaque
+AS 'MODULE_PATHNAME'
+LANGUAGE 'c' with (isstrict);
+
+CREATE TYPE int4key (
+internallength = 8,
+input = int4key_in,
+output = int4key_out
+);
+
+
+--
+--
+--
+-- int4 ops
+--
+--
+--
+-- define the GiST support methods
+create function gint4_consistent(opaque,int4,int2) returns bool as 'MODULE_PATHNAME' language 'C';
+
+create function gint4_compress(opaque) returns opaque as 'MODULE_PATHNAME' language 'C';
+
+create function btree_decompress(opaque) returns opaque as 'MODULE_PATHNAME' language 'C';
+
+create function gint4_penalty(opaque,opaque,opaque) returns opaque as 'MODULE_PATHNAME' language 'C' with(isstrict);
+
+create function gint4_picksplit(opaque, opaque) returns opaque as 'MODULE_PATHNAME' language 'C';
+
+create function gint4_union(bytea, opaque) returns int4 as 'MODULE_PATHNAME' language 'C';
+
+create function gint4_same(opaque, opaque, opaque) returns opaque as 'MODULE_PATHNAME' language 'C';
+
+-- add a new opclass
+INSERT INTO pg_opclass (opcamid, opcname, opcintype, opckeytype, opcdefault)
+   SELECT pg_am.oid, 'gist_int4_ops', pg_type.oid, pg_key.oid, true 
+   FROM pg_type, pg_am, pg_type pg_key
+   WHERE pg_type.typname = 'int4' and
+   pg_key.typname = 'int4key' and
+   pg_am.amname='gist';
+
+
+SELECT o.oid AS opoid, o.oprname
+INTO TABLE int_ops_tmp
+FROM pg_operator o, pg_type t
+WHERE o.oprleft = t.oid and o.oprright = t.oid
+   and t.typname = 'int4';
+
+-- get the comparators for int4es and store them in a tmp table
+INSERT INTO pg_amop (amopclaid, amopopr, amopstrategy, amopreqcheck)
+   SELECT opcl.oid, c.opoid, 1, 'f'
+   FROM pg_opclass opcl, int_ops_tmp c
+   WHERE opcname = 'gist_int4_ops'
+      and c.oprname = '<';
+
+INSERT INTO pg_amop (amopclaid, amopopr, amopstrategy, amopreqcheck)
+   SELECT opcl.oid, c.opoid, 2, 'f'
+   FROM pg_opclass opcl, int_ops_tmp c
+   WHERE opcname = 'gist_int4_ops'
+      and c.oprname = '<=';
+
+INSERT INTO pg_amop (amopclaid, amopopr, amopstrategy, amopreqcheck)
+   SELECT opcl.oid, c.opoid, 3, 'f'
+   FROM pg_opclass opcl, int_ops_tmp c
+   WHERE opcname = 'gist_int4_ops'
+      and c.oprname = '=';
+
+INSERT INTO pg_amop (amopclaid, amopopr, amopstrategy, amopreqcheck)
+   SELECT opcl.oid, c.opoid, 4, 'f'
+   FROM pg_opclass opcl, int_ops_tmp c
+   WHERE opcname = 'gist_int4_ops'
+      and c.oprname = '>=';
+
+INSERT INTO pg_amop (amopclaid, amopopr, amopstrategy, amopreqcheck)
+   SELECT opcl.oid, c.opoid, 5, 'f'
+   FROM pg_opclass opcl, int_ops_tmp c
+   WHERE opcname = 'gist_int4_ops'
+      and c.oprname = '>';
+
+
+DROP table int_ops_tmp;
+
+-- add the entries to amproc for the support methods
+-- note the amprocnum numbers associated with each are specific!
+INSERT INTO pg_amproc (amopclaid, amproc, amprocnum)
+   SELECT opcl.oid, pro.oid, 1
+   FROM pg_opclass opcl, pg_proc pro
+   WHERE  opcname = 'gist_int4_ops'
+      and proname = 'gint4_consistent';
+
+INSERT INTO pg_amproc (amopclaid, amproc, amprocnum)
+   SELECT opcl.oid, pro.oid, 2
+   FROM pg_opclass opcl, pg_proc pro
+   WHERE  opcname = 'gist_int4_ops'
+      and proname = 'gint4_union';
+
+INSERT INTO pg_amproc (amopclaid, amproc, amprocnum)
+   SELECT opcl.oid, pro.oid, 3
+   FROM pg_opclass opcl, pg_proc pro
+   WHERE  opcname = 'gist_int4_ops'
+      and proname = 'gint4_compress';
+
+INSERT INTO pg_amproc (amopclaid, amproc, amprocnum)
+   SELECT opcl.oid, pro.oid, 4
+   FROM pg_opclass opcl, pg_proc pro
+   WHERE  opcname = 'gist_int4_ops'
+      and proname = 'btree_decompress';
+
+INSERT INTO pg_amproc (amopclaid, amproc, amprocnum)
+   SELECT opcl.oid, pro.oid, 5
+   FROM pg_opclass opcl, pg_proc pro
+   WHERE  opcname = 'gist_int4_ops'
+      and proname = 'gint4_penalty';
+
+INSERT INTO pg_amproc (amopclaid, amproc, amprocnum)
+   SELECT opcl.oid, pro.oid, 6
+   FROM pg_opclass opcl, pg_proc pro
+   WHERE  opcname = 'gist_int4_ops'
+      and proname = 'gint4_picksplit';
+
+INSERT INTO pg_amproc (amopclaid, amproc, amprocnum)
+   SELECT opcl.oid, pro.oid, 7
+   FROM pg_opclass opcl, pg_proc pro
+   WHERE  opcname = 'gist_int4_ops'
+      and proname = 'gint4_same';
+
+--
+--
+--
+-- timestamp ops
+-- 
+--
+--
+-- create type of timestamp key
+
+CREATE FUNCTION tskey_in(opaque)
+RETURNS opaque
+AS 'MODULE_PATHNAME'
+LANGUAGE 'c' with (isstrict);
+
+CREATE FUNCTION tskey_out(opaque)
+RETURNS opaque
+AS 'MODULE_PATHNAME'
+LANGUAGE 'c' with (isstrict);
+
+CREATE TYPE tskey (
+internallength = 16,
+input = tskey_in,
+output = tskey_out
+);
+
+create function gts_consistent(opaque,timestamp,int2) returns bool as 'MODULE_PATHNAME' language 'C';
+      
+create function gts_compress(opaque) returns opaque as 'MODULE_PATHNAME' language 'C';
+
+create function gts_penalty(opaque,opaque,opaque) returns opaque as 'MODULE_PATHNAME' language 'C' with(isstrict);
+   
+create function gts_picksplit(opaque, opaque) returns opaque as 'MODULE_PATHNAME' language 'C';
+      
+create function gts_union(bytea, opaque) returns int4 as 'MODULE_PATHNAME' language 'C';
+
+create function gts_same(opaque, opaque, opaque) returns opaque as 'MODULE_PATHNAME' language 'C';
+
+INSERT INTO pg_opclass (opcamid, opcname, opcintype, opckeytype, opcdefault)
+   SELECT pg_am.oid, 'gist_timestamp_ops', pg_type.oid, pg_key.oid, true
+   FROM pg_type, pg_am, pg_type pg_key
+   WHERE pg_type.typname = 'timestamp' and
+   pg_key.typname = 'tskey' and
+   pg_am.amname='gist';
+
+SELECT o.oid AS opoid, o.oprname
+INTO TABLE timestamp_ops_tmp
+FROM pg_operator o, pg_type t
+WHERE o.oprleft = t.oid and o.oprright = t.oid
+   and t.typname = 'timestamp';
+
+INSERT INTO pg_amop (amopclaid, amopopr, amopstrategy, amopreqcheck)
+   SELECT opcl.oid, c.opoid, 1, 'f'
+   FROM pg_opclass opcl, timestamp_ops_tmp c
+   WHERE opcname = 'gist_timestamp_ops'
+      and c.oprname = '<';
+
+INSERT INTO pg_amop (amopclaid, amopopr, amopstrategy, amopreqcheck)
+   SELECT opcl.oid, c.opoid, 2, 'f'
+   FROM pg_opclass opcl, timestamp_ops_tmp c
+   WHERE opcname = 'gist_timestamp_ops'
+      and c.oprname = '<=';
+
+INSERT INTO pg_amop (amopclaid, amopopr, amopstrategy, amopreqcheck)
+   SELECT opcl.oid, c.opoid, 3, 'f'
+   FROM pg_opclass opcl, timestamp_ops_tmp c
+   WHERE opcname = 'gist_timestamp_ops'
+      and c.oprname = '=';
+
+INSERT INTO pg_amop (amopclaid, amopopr, amopstrategy, amopreqcheck)
+   SELECT opcl.oid, c.opoid, 4, 'f'
+   FROM pg_opclass opcl, timestamp_ops_tmp c
+   WHERE opcname = 'gist_timestamp_ops'
+      and c.oprname = '>=';
+
+INSERT INTO pg_amop (amopclaid, amopopr, amopstrategy, amopreqcheck)
+   SELECT opcl.oid, c.opoid, 5, 'f'
+   FROM pg_opclass opcl, timestamp_ops_tmp c
+   WHERE opcname = 'gist_timestamp_ops'
+      and c.oprname = '>';
+
+DROP table timestamp_ops_tmp;
+
+-- add the entries to amproc for the support methods
+-- note the amprocnum numbers associated with each are specific!
+INSERT INTO pg_amproc (amopclaid, amproc, amprocnum)
+   SELECT opcl.oid, pro.oid, 1
+   FROM pg_opclass opcl, pg_proc pro
+   WHERE  opcname = 'gist_timestamp_ops'
+      and proname = 'gts_consistent';
+
+INSERT INTO pg_amproc (amopclaid, amproc, amprocnum)
+   SELECT opcl.oid, pro.oid, 2
+   FROM pg_opclass opcl, pg_proc pro
+   WHERE  opcname = 'gist_timestamp_ops'
+      and proname = 'gts_union';
+
+INSERT INTO pg_amproc (amopclaid, amproc, amprocnum)
+   SELECT opcl.oid, pro.oid, 3
+   FROM pg_opclass opcl, pg_proc pro
+   WHERE  opcname = 'gist_timestamp_ops'
+      and proname = 'gts_compress';
+
+INSERT INTO pg_amproc (amopclaid, amproc, amprocnum)
+   SELECT opcl.oid, pro.oid, 4
+   FROM pg_opclass opcl, pg_proc pro
+   WHERE  opcname = 'gist_timestamp_ops'
+      and proname = 'btree_decompress';
+
+INSERT INTO pg_amproc (amopclaid, amproc, amprocnum)
+   SELECT opcl.oid, pro.oid, 5
+   FROM pg_opclass opcl, pg_proc pro
+   WHERE  opcname = 'gist_timestamp_ops'
+      and proname = 'gts_penalty';
+
+INSERT INTO pg_amproc (amopclaid, amproc, amprocnum)
+   SELECT opcl.oid, pro.oid, 6
+   FROM pg_opclass opcl, pg_proc pro
+   WHERE  opcname = 'gist_timestamp_ops'
+      and proname = 'gts_picksplit';
+
+INSERT INTO pg_amproc (amopclaid, amproc, amprocnum)
+   SELECT opcl.oid, pro.oid, 7
+   FROM pg_opclass opcl, pg_proc pro
+   WHERE  opcname = 'gist_timestamp_ops'
+      and proname = 'gts_same';
+
+end transaction;
+

contrib/btree_gist/data/test_btree.data

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+\N
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contrib/btree_gist/expected/btree_gist.out

+--
+-- first, define the datatype.  Turn off echoing so that expected file
+-- does not depend on contents of seg.sql.
+--
+\set ECHO none
+create table inttmp (b int4);
+\copy inttmp from 'data/test_btree.data'
+create table tstmp ( t datetime );
+\copy tstmp from 'data/test_btree_ts.data'
+-- without idx
+select count(*) from inttmp where b <=10;
+ count 
+-------
+    11
+(1 row)
+
+select count(*) from tstmp where t < '2001-05-29 08:33:09+04';
+ count 
+-------
+     7
+(1 row)
+
+-- create idx
+create index aaaidx on inttmp using gist ( b );
+create index tsidx on tstmp using gist ( t );
+--with idx
+set enable_seqscan=off;
+select count(*) from inttmp where b <=10;
+ count 
+-------
+    11
+(1 row)
+
+select count(*) from tstmp where t < '2001-05-29 08:33:09+04';
+ count 
+-------
+     7
+(1 row)
+

contrib/btree_gist/sql/btree_gist.sql

+--
+-- first, define the datatype.  Turn off echoing so that expected file
+-- does not depend on contents of seg.sql.
+--
+\set ECHO none
+\i btree_gist.sql
+\set ECHO all
+
+create table inttmp (b int4);
+
+\copy inttmp from 'data/test_btree.data'
+
+create table tstmp ( t datetime );
+
+\copy tstmp from 'data/test_btree_ts.data'
+
+-- without idx
+
+select count(*) from inttmp where b <=10;
+
+select count(*) from tstmp where t < '2001-05-29 08:33:09+04';
+
+-- create idx
+
+create index aaaidx on inttmp using gist ( b );
+
+create index tsidx on tstmp using gist ( t );
+
+--with idx
+
+set enable_seqscan=off;
+
+select count(*) from inttmp where b <=10;
+
+select count(*) from tstmp where t < '2001-05-29 08:33:09+04';
+