create role firm1 nologin;
create role john password 'secret' login;
grant firm1 to john;
create role firm2 nologin;
create role amy password 'secret' login;
grant firm2 to amy;
create table table1 (id serial primary key,firm integer, val integer);
insert into table1 (firm, val) values (1, 101);
insert into table1 (firm, val) values (1, 102);
insert into table1 (firm, val) values (1, 103);
insert into table1 (firm, val) values (1, 104);
insert into table1 (firm, val) values (1, 105);
insert into table1 (firm, val) values (2, 206);
insert into table1 (firm, val) values (2, 207);
insert into table1 (firm, val) values (2, 208);
insert into table1 (firm, val) values (2, 209);
insert into table1 (firm, val) values (2, 210);
revoke all on table1 from john;
revoke all on table1 from amy;
revoke all on table1 from firm1;
revoke all on table1 from firm2;
create view view_firm1 as select * from table1 where firm =1;
create view view_firm2 as select * from table1 where firm =2;
grant select, update on view_firm1 to firm1;
grant select, update on view_firm2 to firm2;
create or replace rule _update as on update
to view_firm1 do instead
update table1 set val = NEW.val where id=old.id;
create or replace rule _update as on update
to view_firm2 do instead
update table1 set val = NEW.val where id=old.id;
On Thu, Nov 27, 2008 at 3:06 PM, Csaba Együd <csegyud@xxxxxxxxx> wrote:
""Willy-Bas Loos"" <willybas@xxxxxxxxx> a következoket írta üzenetében news:1dd6057e0811270036s67a6b8baqda17273b0484e53d@xxxxxxxxxxxxxxxxxWilly,
The problem is that my triggers refuse modifying a record if a given Temp table is not created before, because one or more fields have their default values from that temp table
So why don't you either use a normal table, or if you need simultaneous use of the trigger with different values, use an array instead of a table. Or you might create the temp table in the trigger function..
If you create a normal table you can still delete it afterwards.
hth
WBL
--
"Patriotism is the conviction that your country is superior to all others because you were born in it." -- George Bernard Shaw
you are right but... this is a bit difficult but I try to explain. I develop an office management software which uses Postgres as a RDB server. This software has to handle many firms separately but by design it has to use only one database (customer requirement) so I had to find out a solid way to separate the firms form each other. I find out that I qualify every firm-dependent record with a firmid.
After logging in the client software will create a TEMP table in which it stores the selected firmid. This TEMP table will live durring the login session. After this point every views will filter to this firmid and won't give back other firms' data just this. I know that other client softwares will be able to select data from the tables. (Unfortunatelly I don't know a way to revoke select right from a table while a view can select from it... Do you know such thing?) Because of this I know that the clean way would be using separate databases for separate firms but this was not my decision. :( If you know a setting which can improve the security pleas let me know.
Also I had to assure that the INSERT and UPDATE operations will only work for the selected firm and the user won't be able to potter with other firms' data even not accidentally. This is done in triggers and this causes my "View data tool" problem because viewing is possible but modifying is enabled only when a firmid is set in the TEMP table.
BTW, I can use script templates with Query tool (like INSERT or UPDATE script) which are very handy.
Thx,
--
Best Regards,
Csaba Együd
IN-FO Studio
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"Patriotism is the conviction that your country is superior to all others because you were born in it." -- George Bernard Shaw
