/*PGR-GNU*****************************************************************

Copyright (c) 2015 pgRouting developers
Mail: project@pgrouting.org

------

This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.

 ********************************************************************PGR-GNU*/
-----------------------------------------------------------------------
-- Core function for vrp with single depot computation
-- See README for description
-----------------------------------------------------------------------


--------------------
-- pgr_vrpOneDepot
--------------------


--v3.0
CREATE FUNCTION pgr_vrpOneDepot(
	text,  -- order_sql
	text, -- vehicle_sql
	text, -- cost_sql
	integer, -- depot_id

	OUT oid integer,
	OUT opos integer,
	OUT vid integer,
	OUT tarrival integer,
	OUT tdepart integer)
RETURNS SETOF RECORD AS
$BODY$
    SELECT order_id::INTEGER, stop_seq::INTEGER, vehicle_id::INTEGER, arrival_time::INTEGER, departure_time::INTEGER
    FROM _pgr_vrpOneDepot($1, $2,
       '
            SELECT src_id AS start_vid, dest_id AS end_vid, traveltime AS agg_cost FROM ('||$3||') AS a
       ',
       $4);
$BODY$
LANGUAGE SQL VOLATILE STRICT
COST ${COST_HIGH} ROWS ${ROWS_HIGH};




COMMENT ON FUNCTION pgr_vrpOneDepot(TEXT, TEXT, TEXT, INTEGER)
IS 'pgr_vrpOneDepot
- EXPERIMENTAL
- Parameters
  - orders SQL with columns: id, x, y, order_unit, open_time, close_time, service_time
  - vehicle SQL with columns: vehicle_id, capacity, case_no
  - cost SQL with columns: src_id, dest_id, cost, distance, traveltime
  - depot id
- Documentation:
  - ${PROJECT_DOC_LINK}/pgr_vrpOneDepot.html
';
