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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 timestamp 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_executor alter column host varchar(253) not null;
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 column host varchar(253) not null;
-- archiving
drop index nflow_workflow_next_activation;
create index if not exists nflow_workflow_next_activation on nflow_workflow(next_activation, modified);
create table if not exists nflow_archive_workflow (
id int not null primary key,
status varchar(32) not null check status in ('created', 'executing', 'inProgress', 'finished', 'manual'),
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 timestamp,
external_next_activation timestamp,
executor_id int,
retries int not null,
created timestamp not null,
modified timestamp not null,
executor_group varchar(64) not null
);
create unique index if not exists nflow_archive_workflow_uniq on nflow_archive_workflow (type, external_id, executor_group);
create index if not exists nflow_archive_workflow_next_activation on nflow_archive_workflow(next_activation, modified);
create table if not exists nflow_archive_workflow_action (
id int not null primary key,
workflow_id int not null,
executor_id int not null,
type varchar(32) not null check type in ('stateExecution', 'stateExecutionFailed', 'recovery', 'externalChange'),
state varchar(64) not null,
state_text varchar(128),
retry_no int not null,
execution_start timestamp not null,
execution_end timestamp not null,
foreign key (workflow_id) references nflow_archive_workflow(id) on delete cascade
);
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 varchar(10240) not null,
primary key (workflow_id, action_id, state_key),
foreign key (workflow_id) references nflow_archive_workflow(id) on delete cascade
);
