Re: Get / Set Composite Type Fields within triggers

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От Ingmar Brouns
Тема Re: Get / Set Composite Type Fields within triggers
Дата
Msg-id CA+77E=ZWQ-ns8fkkWbkL+rvW++aXUdLXbA-VAEE61a-eSs1fUA@mail.gmail.com
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Ответ на Get / Set Composite Type Fields within triggers  (Martin Durao <durao.martin@gmail.com>)
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> My problem is inside triggers: How can I set or get type field values for
> NEW or OLD? (I need it to check users permissions at row level, etc.)
>
> I tried NEW.((created).by), NEW.(created.by),  NEW.created.by and nothing
> works...
>
> Could you help me please?
>
> Thanks in advance.
> Martin


for accessing you could use

(NEW.created).by

for setting it, as far as I know  it's not possible to assign directly
to a field of a composite type in a record,
but something like this would work

# create table foo (a info_base);

# create or replace function foobartrig() returns trigger AS
$func$
declare rec info_base;
begin
rec := ('AAAAAAAAAAAAAAAAAA', (NEW.a).at);
NEW.a := rec;
raise warning '%', NEW;
RETURN NEW;
END;
$func$
language plpgsql;
CREATE FUNCTION


# insert into foobar values (('aoeu',current_timestamp)::info_base)
;
WARNING:  ("(AAAAAAAAAAAAAAAAAA,""2013-06-24 11:55:55.610049"")")


Hope this was of some help...


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