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--audit tables generated from
-- % sqlt -f PostgreSQL -t TTSchema --template add-audits.tmpl nofuncs.sql>audit_tables.sql
[% FOREACH table IN schema.get_tables %]
DROP TABLE audit_[% table.name %];
CREATE TABLE audit_[% table.name %] ( [% FOREACH field IN table.get_fields %]
[% field.name %] [% IF field.data_type == 'serial'; 'int'; ELSE; field.data_type; END %][% IF field.size AND (field.data_type == 'char' OR field.data_type == 'varchar') %]([% field.size.join(', ') %])[% END %], [% END %]
transaction_date timestamp not null default now(),
transaction_type char(1) not null
);
GRANT ALL on audit_[% table.name %] to PUBLIC;
CREATE OR REPLACE FUNCTION audit_update_delete_[% table.name %]() RETURNS trigger AS
'
DECLARE
[% FOREACH field IN table.get_fields %][% field.name %]_var [% IF field.data_type == 'serial'; 'int'; ELSE; field.data_type; END %][% IF field.size AND (field.data_type == 'char' OR field.data_type == 'varchar') %]([% field.size.join(', ') %])[% END %];
[% END %]
transaction_type_var char;
BEGIN
[% FOREACH field IN table.get_fields %][% field.name %]_var = OLD.[% field.name %];
[% END %]
IF TG_OP = ''DELETE'' THEN
transaction_type_var = ''D'';
ELSE
transaction_type_var = ''U'';
END IF;
INSERT INTO audit_[% table.name %] ( [% FOREACH field IN table.get_fields %]
[% field.name %], [% END %]
transaction_type
) VALUES ( [% FOREACH field IN table.get_fields %]
[% field.name %]_var, [% END %]
transaction_type_var
);
IF TG_OP = ''DELETE'' THEN
return OLD;
ELSE
return NEW;
END IF;
END
'
LANGUAGE plpgsql;
DROP TRIGGER [% table.name %]_audit_ud ON [% table.name %];
CREATE TRIGGER [% table.name %]_audit_ud
BEFORE UPDATE OR DELETE ON [% table.name %]
FOR EACH ROW
EXECUTE PROCEDURE audit_update_delete_[% table.name %] ();
[% END %]
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