1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
|
--
-- PostgreSQL code for CHKPASS.
-- Written by D'Arcy J.M. Cain
-- darcy@druid.net
-- http://www.druid.net/darcy/
--
-- $Header: /cvsroot/pgsql/contrib/chkpass/Attic/chkpass.sql,v 1.1 2001/05/03 12:32:13 darcy Exp $
-- best viewed with tabs set to 4
-- %%PGDIR%% changed to your local directory where modules is
--
load '%%PGDIR%%/modules/chkpass.so';
--
-- Input and output functions and the type itself:
--
create function chkpass_in(opaque)
returns opaque
as '%%PGDIR%%/modules/chkpass.so'
language 'c';
create function chkpass_out(opaque)
returns opaque
as '%%PGDIR%%/modules/chkpass.so'
language 'c';
create type chkpass (
internallength = 16,
externallength = 13,
input = chkpass_in,
output = chkpass_out
);
create function raw(chkpass)
returns text
as '%%PGDIR%%/modules/chkpass.so', 'chkpass_rout'
language 'c';
--
-- The various boolean tests:
--
create function eq(chkpass, text)
returns bool
as '%%PGDIR%%/modules/chkpass.so', 'chkpass_eq'
language 'c';
create function ne(chkpass, text)
returns bool
as '%%PGDIR%%/modules/chkpass.so', 'chkpass_ne'
language 'c';
--
-- Now the operators. Note how some of the parameters to some
-- of the 'create operator' commands are commented out. This
-- is because they reference as yet undefined operators, and
-- will be implicitly defined when those are, further down.
--
create operator = (
leftarg = chkpass,
rightarg = text,
commutator = =,
-- negator = <>,
procedure = eq
);
create operator <> (
leftarg = chkpass,
rightarg = text,
negator = =,
procedure = ne
);
INSERT INTO pg_description (objoid, description)
SELECT oid, 'password type with checks'
FROM pg_type WHERE typname = 'chkpass';
--
-- eof
--
|
