Try new operation table

script/sql/create/operation.sql

@@ -1,36 +1,25 @@
-create type api_operation as enum ('init', 'add', 'delete', 'update');
-
 create table operation
 (
   id serial primary key
 , redo text not null
 , undo text not null
-, parent integer references operation(id)
-, redo_child integer references operation(id)
-, api_id text not null
-, api_op api_operation not null
-, api_object_type text not null
-, api_object_id text not null
-, api_object_properties text[]
+, parent integer references operation(id) on delete cascade
+, redo_child integer references operation(id) -- must update before delete
+, redo_change_set json
+, undo_change_set json
 );
 
-insert into operation (id, redo, undo, api_id, api_op, api_object_type, api_object_id) values (0, '', '', '', 'init', '', '');
+insert into operation (id, redo, undo) values (0, '', '');
 
 create table current_operation
 (
-  id integer primary key references operation(id)
+  id integer primary key references operation(id) -- must update before delete
 );
 
 insert into current_operation (id) values (0);
 
 create table snapshot_operation
 (
-  id integer primary key references operation(id)
+  id integer primary key references operation(id) on delete cascade
 , tag text not null unique
 );
-
-create table transaction_operation
-(
-  id integer primary key references operation(id)
-, strict boolean not null default false
-);