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Update /contrib for "autocommit TO 'on'".

Create objects in public schema.

Make spacing/capitalization consistent.

Remove transaction block use for object creation.

Remove unneeded function GRANTs.
This commit is contained in:
Bruce Momjian
2002-10-18 18:41:22 +00:00
parent fb9bc342ff
commit aa4c702eac
91 changed files with 3530 additions and 2643 deletions

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@ -1,56 +1,62 @@
--
-- PostgreSQL code for LargeObjects
--
-- $Id: lo.sql.in,v 1.7 2002/08/22 00:01:39 tgl Exp $
-- $Id: lo.sql.in,v 1.8 2002/10/18 18:41:20 momjian Exp $
--
--
-- Create the data type
--
-- used by the lo type, it takes an oid and returns an lo object
create function lo_in(cstring)
returns lo
as 'MODULE_PATHNAME'
language 'c';
-- Adjust this setting to control where the objects get created.
SET search_path = public;
SET autocommit TO 'on';
CREATE FUNCTION lo_in(cstring)
RETURNS lo
AS 'MODULE_PATHNAME'
LANGUAGE 'C';
-- used by the lo type, it returns the oid of the object
create function lo_out(lo)
returns cstring
as 'MODULE_PATHNAME'
language 'c';
CREATE FUNCTION lo_out(lo)
RETURNS cstring
AS 'MODULE_PATHNAME'
LANGUAGE 'C';
-- finally the type itself
create type lo (
internallength = 4,
externallength = variable,
input = lo_in,
output = lo_out
CREATE TYPE lo (
INTERNALLENGTH = 4,
EXTERNALLENGTH = variable,
INPUT = lo_in,
OUTPUT = lo_out
);
-- this returns the oid associated with a lo object
create function lo_oid(lo)
returns oid
as 'MODULE_PATHNAME'
language 'c';
CREATE FUNCTION lo_oid(lo)
RETURNS oid
AS 'MODULE_PATHNAME'
LANGUAGE 'C';
-- same function, named to allow it to be used as a type coercion, eg:
-- create table a (image lo);
-- select image::oid from a;
-- CREATE TABLE a (image lo);
-- SELECT image::oid FROM a;
--
create function oid(lo)
returns oid
as 'MODULE_PATHNAME', 'lo_oid'
language 'c';
CREATE FUNCTION oid(lo)
RETURNS oid
AS 'MODULE_PATHNAME', 'lo_oid'
LANGUAGE 'C';
-- this allows us to convert an oid to a managed lo object
-- ie: insert into test values (lo_import('/fullpath/file')::lo);
create function lo(oid)
returns lo
as 'MODULE_PATHNAME'
language 'c';
CREATE FUNCTION lo(oid)
RETURNS lo
AS 'MODULE_PATHNAME'
LANGUAGE 'C';
-- This is used in triggers
create function lo_manage()
returns trigger
as 'MODULE_PATHNAME'
language 'c';
CREATE FUNCTION lo_manage()
RETURNS trigger
AS 'MODULE_PATHNAME'
LANGUAGE 'C';

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@ -3,13 +3,18 @@
-- It's used just for development
--
-- Adjust this setting to control where the objects get created.
SET search_path = public;
SET autocommit TO 'on';
-- remove our test table
drop table a;
DROP TABLE a;
-- now drop the type and associated C functions
drop type lo CASCADE;
DROP TYPE lo CASCADE;
-- the trigger function has no dependency on the type, so drop separately
drop function lo_manage();
DROP FUNCTION lo_manage();
-- the lo stuff is now removed from the system

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@ -5,53 +5,65 @@
--
-- ignore any errors here - simply drop the table if it already exists
drop table a;
DROP TABLE a;
-- create the test table
create table a (fname name,image lo);
CREATE TABLE a (fname name,image lo);
-- insert a null object
insert into a values ('null');
INSERT INTO a VALUES ('null');
-- insert an empty large object
insert into a values ('empty','');
INSERT INTO a VALUES ('empty','');
-- insert a large object based on a file
insert into a values ('/etc/group',lo_import('/etc/group')::lo);
INSERT INTO a VALUES ('/etc/group',lo_import('/etc/group')::lo);
-- now select the table
select * from a;
SELECT * FROM a;
-- this select also returns an oid based on the lo column
select *,image::oid from a;
SELECT *,image::oid from a;
-- now test the trigger
create trigger t_a before update or delete on a for each row execute procedure lo_manage(image);
CREATE TRIGGER t_a
BEFORE UPDATE OR DELETE ON a
FOR EACH ROW
EXECUTE PROCEDURE lo_manage(image);
-- insert
insert into a values ('aa','');
select * from a where fname like 'aa%';
INSERT INTO a VALUES ('aa','');
SELECT * FROM a
WHERE fname LIKE 'aa%';
-- update
update a set image=lo_import('/etc/group')::lo where fname='aa';
select * from a where fname like 'aa%';
UPDATE a SET image=lo_import('/etc/group')::lo
WHERE fname='aa';
SELECT * FROM a
WHERE fname LIKE 'aa%';
-- update the 'empty' row which should be null
update a set image=lo_import('/etc/hosts')::lo where fname='empty';
select * from a where fname like 'empty%';
update a set image=null where fname='empty';
select * from a where fname like 'empty%';
UPDATE a SET image=lo_import('/etc/hosts')::lo
WHERE fname='empty';
SELECT * FROM a
WHERE fname LIKE 'empty%';
UPDATE a SET image=null
WHERE fname='empty';
SELECT * FROM a
WHERE fname LIKE 'empty%';
-- delete the entry
delete from a where fname='aa';
select * from a where fname like 'aa%';
DELETE FROM a
WHERE fname='aa';
SELECT * FROM a
WHERE fname LIKE 'aa%';
-- This deletes the table contents. Note, if you comment this out, and
-- expect the drop table to remove the objects, think again. The trigger
-- doesn't get thrown by drop table.
delete from a;
DELETE FROM a;
-- finally drop the table
drop table a;
DROP TABLE a;
-- end of tests