Also fixed database upgrade script
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1 changed files with 183 additions and 1 deletions
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@ -10,7 +10,7 @@
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BEGIN;
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DROP FUNCTION IF EXISTS tasks_item_au( ) CASCADE;
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DROP FUNCTION IF EXISTS tasks_ltc_au( ) CASCADE;
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CREATE FUNCTION tasks_ltc_au( )
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RETURNS TRIGGER
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LANGUAGE PLPGSQL
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@ -34,4 +34,186 @@ BEGIN;
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CREATE TRIGGER tasks_ltc_au
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AFTER UPDATE OF ltc_id ON tasks
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FOR EACH ROW EXECUTE PROCEDURE tasks_ltc_au( );
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DROP FUNCTION IF EXISTS tasks_move( BOOLEAN , INT , BOOLEAN , INT , BOOLEAN , INT[] );
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CREATE FUNCTION tasks_move( _fromTask BOOLEAN , _fromId INT , _toTask BOOLEAN , _toId INT , _force BOOLEAN , _tasks INT[] )
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RETURNS INT
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LANGUAGE PLPGSQL
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STRICT VOLATILE
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SECURITY DEFINER
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AS $tasks_move$
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DECLARE
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_i INT;
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_ltc_source INT;
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_ltc_dest INT;
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BEGIN
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-- Create the temporary table for tasks
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PERFORM _tm_create_temp( _tasks );
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-- Make sure all specified tasks exists
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SELECT INTO _i COUNT( * )
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FROM _tm_tasks
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INNER JOIN tasks USING( task_id );
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IF _i <> array_length( _tasks , 1 ) THEN
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RETURN 1;
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END IF;
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-- Make sure all tasks match the specified container
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PERFORM task_id
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FROM _tm_tasks
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INNER JOIN tasks USING( task_id )
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WHERE ( task_id_parent IS NOT NULL ) <> _fromTask
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OR ( CASE
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WHEN task_id_parent IS NULL THEN
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item_id
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ELSE
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task_id_parent
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END ) <> _fromId;
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IF FOUND THEN
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RETURN 2;
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END IF;
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-- If the source and destination are the same, we're done.
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IF _fromTask = _toTask AND _fromId = _toId THEN
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RETURN 0;
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END IF;
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-- Make sure that the destination exists. Also get the target LTC ID.
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IF _toTask THEN
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SELECT INTO _ltc_dest _ltc.ltc_id
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FROM logical_task_containers _ltc
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LEFT OUTER JOIN completed_tasks _ct
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USING( task_id )
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WHERE _ltc.task_id = _toId AND _ct.task_id IS NULL;
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ELSE
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SELECT INTO _ltc_dest ltc_id
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FROM logical_task_containers
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WHERE task_id IS NULL;
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PERFORM item_id FROM items WHERE item_id = _toId;
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END IF;
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IF NOT FOUND THEN
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RETURN 3;
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END IF;
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-- If we're moving to a task, make sure it isn't a child of any of the
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-- tasks that are being moved.
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IF _toTask THEN
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PERFORM * FROM _tm_tasks _mv
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INNER JOIN tasks_tree _tree
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ON _mv.task_id = _tree.task_id_parent
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WHERE task_id_child = _toId;
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IF FOUND THEN
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RETURN 4;
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END IF;
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END IF;
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-- Get the source LTC ID.
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IF _fromTask THEN
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SELECT INTO _ltc_source ltc_id
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FROM logical_task_containers
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WHERE task_id = _fromId;
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ELSE
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SELECT INTO _ltc_source ltc_id
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FROM logical_task_containers
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WHERE task_id IS NULL;
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END IF;
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-- If we're changing the LTC, handle dependencies.
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IF _ltc_source <> _ltc_dest THEN
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-- Start with external dependencies
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IF NOT _force THEN
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-- Check them if we're not forcing the move.
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PERFORM _tdn.task_id
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FROM taskdep_nodes _tdn
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INNER JOIN _tm_tasks _tmt
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USING( task_id )
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LEFT OUTER JOIN _tm_tasks _tmt2
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ON _tmt2.task_id = _tdn.task_id_copyof
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WHERE _tdn.tnode_depth = 1 AND _tmt2.task_id IS NULL;
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IF FOUND THEN
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RETURN 5;
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END IF;
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ELSE
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-- Otherwise, break them.
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DELETE FROM task_dependencies
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WHERE taskdep_id IN (
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SELECT DISTINCT _tdn.taskdep_id
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FROM taskdep_nodes _tdn
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INNER JOIN _tm_tasks _tmt
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USING( task_id )
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LEFT OUTER JOIN _tm_tasks _tmt2
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ON _tmt2.task_id = _tdn.task_id_copyof
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WHERE _tdn.tnode_depth = 1 AND _tmt2.task_id IS NULL
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);
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END IF;
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-- Store all internal dependencies, we'll recreate them after
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-- the tasks have been moved.
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SET LOCAL client_min_messages=warning;
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DROP TABLE IF EXISTS _tm_deps;
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RESET client_min_messages;
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CREATE TEMPORARY TABLE _tm_deps(
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task_id INT ,
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task_id_depends INT
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) ON COMMIT DROP;
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INSERT INTO _tm_deps ( task_id , task_id_depends )
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SELECT task_id , task_id_depends
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FROM task_dependencies
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INNER JOIN _tm_tasks USING ( task_id );
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DELETE FROM task_dependencies
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WHERE task_id IN ( SELECT task_id FROM _tm_tasks );
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END IF;
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-- We're ready to move the tasks themselves.
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IF _toTask THEN
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SELECT INTO _i item_id FROM tasks WHERE task_id = _toId;
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ELSE
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_i := _toId;
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END IF;
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UPDATE tasks SET item_id = _i , ltc_id = _ltc_dest
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WHERE task_id IN (
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SELECT task_id FROM _tm_tasks
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);
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-- Restore deleted dependencies
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IF _ltc_dest <> _ltc_source THEN
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INSERT INTO task_dependencies ( task_id , task_id_depends , ltc_id )
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SELECT task_id , task_id_depends , _ltc_dest
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FROM _tm_deps;
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END IF;
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RETURN 0;
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END;
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$tasks_move$;
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REVOKE EXECUTE ON FUNCTION tasks_move( BOOLEAN , INT , BOOLEAN , INT , BOOLEAN , INT[] ) FROM PUBLIC;
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GRANT EXECUTE ON FUNCTION tasks_move( BOOLEAN , INT , BOOLEAN , INT , BOOLEAN , INT[] ) TO :webapp_user;
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DROP FUNCTION IF EXISTS _tm_create_temp( INT[] );
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CREATE FUNCTION _tm_create_temp( _tasks INT[] )
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RETURNS VOID
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LANGUAGE PLPGSQL
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STRICT VOLATILE
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SECURITY INVOKER
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AS $_tm_create_temp$
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DECLARE
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_i INT;
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BEGIN
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SET LOCAL client_min_messages=warning;
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DROP TABLE IF EXISTS _tm_tasks;
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RESET client_min_messages;
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CREATE TEMPORARY TABLE _tm_tasks(
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task_id INT
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) ON COMMIT DROP;
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FOR _i IN array_lower( _tasks , 1 ) .. array_upper( _tasks , 1 )
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LOOP
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INSERT INTO _tm_tasks( task_id ) VALUES ( _tasks[ _i ] );
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END LOOP;
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END;
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$_tm_create_temp$;
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REVOKE EXECUTE ON FUNCTION _tm_create_temp( INT[] ) FROM PUBLIC;
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COMMIT;
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