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Replace ad-hoc insertions into pg_opclass and friends with CREATE

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OPERATOR CLASS commands.  Further tweaking of documentation for same.
This commit is contained in:
Tom Lane
2002-07-30 17:34:37 +00:00
parent ea2d97414c
commit 65b6868b13
10 changed files with 208 additions and 1102 deletions
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176
contrib/seg/seg.sql.in
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@ -2,6 +2,9 @@
--
BEGIN TRANSACTION;
-- Adjust this setting to control where the objects get created.
SET search_path = public;
CREATE FUNCTION seg_in(opaque)
RETURNS opaque
AS 'MODULE_PATHNAME'
@ -235,162 +238,25 @@ CREATE FUNCTION gseg_same(seg, seg, opaque) RETURNS opaque
AS 'MODULE_PATHNAME' LANGUAGE 'c';
-- register the default opclass for indexing
INSERT INTO pg_opclass (opcamid, opcname, opcnamespace, opcowner, opcintype, opcdefault, opckeytype)
VALUES (
(SELECT oid FROM pg_am WHERE amname = 'gist'),
'gist_seg_ops',
(SELECT oid FROM pg_namespace WHERE nspname = 'pg_catalog'),
1, -- UID of superuser is hardwired to 1 as of PG 7.3
(SELECT oid FROM pg_type WHERE typname = 'seg'),
true,
0);
-- Create the operator class for indexing
CREATE OPERATOR CLASS gist_seg_ops
DEFAULT FOR TYPE seg USING gist AS
OPERATOR 1 << ,
OPERATOR 2 &< ,
OPERATOR 3 && ,
OPERATOR 4 &> ,
OPERATOR 5 >> ,
OPERATOR 6 = ,
OPERATOR 7 @ ,
OPERATOR 8 ~ ,
FUNCTION 1 gseg_consistent (opaque, seg, int4),
FUNCTION 2 gseg_union (bytea, opaque),
FUNCTION 3 gseg_compress (opaque),
FUNCTION 4 gseg_decompress (opaque),
FUNCTION 5 gseg_penalty (opaque, opaque, opaque),
FUNCTION 6 gseg_picksplit (opaque, opaque),
FUNCTION 7 gseg_same (seg, seg, opaque);
-- get the comparators for segments and store them in a tmp table
SELECT o.oid AS opoid, o.oprname
INTO TEMP TABLE seg_ops_tmp
FROM pg_operator o, pg_type t
WHERE o.oprleft = t.oid and o.oprright = t.oid
and t.typname = 'seg';
-- make sure we have the right operators
-- SELECT * from seg_ops_tmp;
-- using the tmp table, generate the amop entries
-- seg_left
INSERT INTO pg_amop (amopclaid, amopstrategy, amopreqcheck, amopopr)
SELECT opcl.oid, 1, false, c.opoid
FROM pg_opclass opcl, seg_ops_tmp c
WHERE
opcamid = (SELECT oid FROM pg_am WHERE amname = 'gist')
and opcname = 'gist_seg_ops'
and c.oprname = '<<';
-- seg_overleft
INSERT INTO pg_amop (amopclaid, amopstrategy, amopreqcheck, amopopr)
SELECT opcl.oid, 2, false, c.opoid
FROM pg_opclass opcl, seg_ops_tmp c
WHERE
opcamid = (SELECT oid FROM pg_am WHERE amname = 'gist')
and opcname = 'gist_seg_ops'
and c.oprname = '&<';
-- seg_overlap
INSERT INTO pg_amop (amopclaid, amopstrategy, amopreqcheck, amopopr)
SELECT opcl.oid, 3, false, c.opoid
FROM pg_opclass opcl, seg_ops_tmp c
WHERE
opcamid = (SELECT oid FROM pg_am WHERE amname = 'gist')
and opcname = 'gist_seg_ops'
and c.oprname = '&&';
-- seg_overright
INSERT INTO pg_amop (amopclaid, amopstrategy, amopreqcheck, amopopr)
SELECT opcl.oid, 4, false, c.opoid
FROM pg_opclass opcl, seg_ops_tmp c
WHERE
opcamid = (SELECT oid FROM pg_am WHERE amname = 'gist')
and opcname = 'gist_seg_ops'
and c.oprname = '&>';
-- seg_right
INSERT INTO pg_amop (amopclaid, amopstrategy, amopreqcheck, amopopr)
SELECT opcl.oid, 5, false, c.opoid
FROM pg_opclass opcl, seg_ops_tmp c
WHERE
opcamid = (SELECT oid FROM pg_am WHERE amname = 'gist')
and opcname = 'gist_seg_ops'
and c.oprname = '>>';
-- seg_same
INSERT INTO pg_amop (amopclaid, amopstrategy, amopreqcheck, amopopr)
SELECT opcl.oid, 6, false, c.opoid
FROM pg_opclass opcl, seg_ops_tmp c
WHERE
opcamid = (SELECT oid FROM pg_am WHERE amname = 'gist')
and opcname = 'gist_seg_ops'
and c.oprname = '=';
-- seg_contains
INSERT INTO pg_amop (amopclaid, amopstrategy, amopreqcheck, amopopr)
SELECT opcl.oid, 7, false, c.opoid
FROM pg_opclass opcl, seg_ops_tmp c
WHERE
opcamid = (SELECT oid FROM pg_am WHERE amname = 'gist')
and opcname = 'gist_seg_ops'
and c.oprname = '@';
-- seg_contained
INSERT INTO pg_amop (amopclaid, amopstrategy, amopreqcheck, amopopr)
SELECT opcl.oid, 8, false, c.opoid
FROM pg_opclass opcl, seg_ops_tmp c
WHERE
opcamid = (SELECT oid FROM pg_am WHERE amname = 'gist')
and opcname = 'gist_seg_ops'
and c.oprname = '~';
DROP TABLE seg_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, amprocnum, amproc)
SELECT opcl.oid, 1, pro.oid
FROM pg_opclass opcl, pg_proc pro
WHERE
opcamid = (SELECT oid FROM pg_am WHERE amname = 'gist')
and opcname = 'gist_seg_ops'
and proname = 'gseg_consistent';
INSERT INTO pg_amproc (amopclaid, amprocnum, amproc)
SELECT opcl.oid, 2, pro.oid
FROM pg_opclass opcl, pg_proc pro
WHERE
opcamid = (SELECT oid FROM pg_am WHERE amname = 'gist')
and opcname = 'gist_seg_ops'
and proname = 'gseg_union';
INSERT INTO pg_amproc (amopclaid, amprocnum, amproc)
SELECT opcl.oid, 3, pro.oid
FROM pg_opclass opcl, pg_proc pro
WHERE
opcamid = (SELECT oid FROM pg_am WHERE amname = 'gist')
and opcname = 'gist_seg_ops'
and proname = 'gseg_compress';
INSERT INTO pg_amproc (amopclaid, amprocnum, amproc)
SELECT opcl.oid, 4, pro.oid
FROM pg_opclass opcl, pg_proc pro
WHERE
opcamid = (SELECT oid FROM pg_am WHERE amname = 'gist')
and opcname = 'gist_seg_ops'
and proname = 'gseg_decompress';
INSERT INTO pg_amproc (amopclaid, amprocnum, amproc)
SELECT opcl.oid, 5, pro.oid
FROM pg_opclass opcl, pg_proc pro
WHERE
opcamid = (SELECT oid FROM pg_am WHERE amname = 'gist')
and opcname = 'gist_seg_ops'
and proname = 'gseg_penalty';
INSERT INTO pg_amproc (amopclaid, amprocnum, amproc)
SELECT opcl.oid, 6, pro.oid
FROM pg_opclass opcl, pg_proc pro
WHERE
opcamid = (SELECT oid FROM pg_am WHERE amname = 'gist')
and opcname = 'gist_seg_ops'
and proname = 'gseg_picksplit';
INSERT INTO pg_amproc (amopclaid, amprocnum, amproc)
SELECT opcl.oid, 7, pro.oid
FROM pg_opclass opcl, pg_proc pro
WHERE
opcamid = (SELECT oid FROM pg_am WHERE amname = 'gist')
and opcname = 'gist_seg_ops'
and proname = 'gseg_same';
END TRANSACTION;