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/*PGR-GNU*****************************************************************
File: contraction.sql
Generated with Template by:
Copyright (c) 2015 pgRouting developers
Mail: project@pgrouting.org
Function's developer:
Copyright (c) 2016 Rohith Reddy
Mail:
------
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*/
--v3.8
CREATE FUNCTION pgr_contraction(
TEXT, -- edges_sql (required)
directed BOOLEAN DEFAULT true,
methods INTEGER[] DEFAULT ARRAY[1,2]::INTEGER[],
cycles INTEGER DEFAULT 1,
forbidden BIGINT[] DEFAULT ARRAY[]::BIGINT[],
OUT type TEXT,
OUT id BIGINT,
OUT contracted_vertices BIGINT[],
OUT source BIGINT,
OUT target BIGINT,
OUT cost FLOAT)
RETURNS SETOF RECORD AS
$BODY$
SELECT type, id, contracted_vertices, source, target, cost
FROM _pgr_contraction(_pgr_get_statement($1), methods::BIGINT[], cycles, forbidden, directed);
$BODY$
LANGUAGE SQL VOLATILE STRICT
COST ${COST_HIGH} ROWS ${ROWS_HIGH};
COMMENT ON FUNCTION pgr_contraction(TEXT, BOOLEAN, INTEGER[], INTEGER, BIGINT[])
IS 'pgr_contraction
- Parameters:
- Edges SQL with columns: id, source, target, cost [,reverse_cost]
- Optional Parameters
- directed := true
- methods := ARRAY[1,2]
- cycles := 1
- forbidden := ARRAY[]::BIGINT[]
- Documentation:
- ${PROJECT_DOC_LINK}/pgr_contraction.html
';
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