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alter table nflow_workflow add root_workflow_id integer default null;
alter table nflow_workflow add parent_workflow_id integer default null;
alter table nflow_workflow add parent_action_id integer default null;
alter table nflow_workflow add external_next_activation timestamptz default null;
alter table nflow_workflow add constraint fk_workflow_parent
foreign key (parent_workflow_id, parent_action_id) references nflow_workflow_action (workflow_id, id) on delete cascade;
alter table nflow_workflow add constraint fk_workflow_root
foreign key (root_workflow_id) references nflow_workflow (id) on delete cascade;
alter table nflow_executor alter host varchar(253) not null;
-- archiving
create or replace function update_modified() returns trigger language plpgsql as '
begin
if NEW.modified = OLD.modified then
NEW.modified := now();
end if;
return NEW;
end;
';
drop trigger if exists update_nflow_modified on nflow_workflow;
create trigger update_nflow_modified before update on nflow_workflow for each row execute procedure update_modified();
drop index nflow_workflow_activation;
create index nflow_workflow_activation on nflow_workflow(next_activation, modified);
create table if not exists nflow_archive_workflow (
id integer primary key,
status workflow_status not null,
type varchar(64) not null,
root_workflow_id integer,
parent_workflow_id integer,
parent_action_id integer,
business_key varchar(64),
external_id varchar(64) not null,
state varchar(64) not null,
state_text varchar(128),
next_activation timestamptz,
external_next_activation timestamptz,
executor_id int,
retries int not null default 0,
created timestamptz not null,
modified timestamptz not null,
executor_group varchar(64) not null,
constraint nflow_archive_workflow_uniq unique (type, external_id, executor_group)
);
drop index nflow_archive_workflow_activation;
create index nflow_archive_workflow_activation on nflow_archive_workflow(next_activation, modified);
create table if not exists nflow_archive_workflow_action (
id integer primary key,
workflow_id int not null,
executor_id int not null,
type action_type not null,
state varchar(64) not null,
state_text varchar(128),
retry_no int not null,
execution_start timestamptz not null,
execution_end timestamptz not null,
foreign key (workflow_id) references nflow_archive_workflow(id) on delete cascade,
constraint nflow_archive_workflow_action_uniq unique (workflow_id, id)
);
create table if not exists nflow_archive_workflow_state (
workflow_id int not null,
action_id int not null,
state_key varchar(64) not null,
state_value text not null,
primary key (workflow_id, action_id, state_key),
foreign key (workflow_id) references nflow_archive_workflow(id) on delete cascade
);
