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/*PGR-GNU*****************************************************************
Copyright (c) 2016 pgRouting developers
Mail: project@pgrouting.org
Copyright (c) 2016 Celia Virginia Vergara Castillo
mail: vicky_vergara@hotmail.com
------
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*/
----------------
----------------
-- tsp
----------------
----------------
-----------------------
-- _pgr_unnest_matrix
-----------------------
CREATE OR REPLACE FUNCTION _pgr_unnest_matrix
(matrix float8[][],
OUT start_vid integer,
OUT end_vid integer,
out agg_cost float8)
RETURNS SETOF record AS
$body$
DECLARE
m float8[];
BEGIN
start_vid = 1;
foreach m slice 1 in ARRAY matrix
LOOP
end_vid = 1;
foreach agg_cost in ARRAY m
LOOP
RETURN next;
end_vid = end_vid + 1;
END LOOP;
start_vid = start_vid + 1;
END LOOP;
END;
$body$
language plpgsql volatile STRICT cost 500 ROWS 50;
CREATE OR REPLACE FUNCTION pgr_tsp
(matrix float8[][],
startpt INTEGER,
endpt INTEGER DEFAULT -1,
OUT seq INTEGER,
OUT id INTEGER)
RETURNS SETOF record AS
$body$
DECLARE
table_sql TEXT;
debuglevel TEXT;
BEGIN
RAISE NOTICE 'Deprecated Signature pgr_tsp(float8[][], integer, integer)';
CREATE TEMP TABLE ___tmp2 ON COMMIT DROP AS SELECT * FROM _pgr_unnest_matrix( matrix );
startpt := startpt + 1;
IF endpt = -1 THEN endpt := startpt;
END IF;
RETURN QUERY
WITH
result AS (
SELECT * FROM pgr_TSP(
$$SELECT * FROM ___tmp2 $$,
startpt, endpt,
tries_per_temperature := 500 :: INTEGER,
max_changes_per_temperature := 30 :: INTEGER,
max_consecutive_non_changes := 500 :: INTEGER,
randomize:=false)
)
SELECT (row_number() over(ORDER BY result.seq) - 1)::INTEGER AS seq, (result.node - 1)::INTEGER AS id
FROM result WHERE NOT(result.node = startpt AND result.seq != 1);
DROP TABLE ___tmp2;
END;
$body$
language plpgsql volatile STRICT cost 500 ROWS 50;
-- COMMENTS
COMMENT ON FUNCTION _pgr_unnest_matrix(FLOAT[][])
IS 'DEPRECATED';
COMMENT ON FUNCTION pgr_tsp(FLOAT[][], INTEGER, INTEGER)
IS 'pgr_tsp
- Parameters
- Matrix
- startpt
- endpt
- Documentation:
- ${PGROUTING_DOC_LINK}/pgr_tsp.html
';
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