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/*PGR-GNU*****************************************************************
Copyright (c) 2015 pgRouting developers
Mail: project@pgrouting.org
Copyright (c) 2016 Andrea Nardelli
mail: nrd.nardelli@gmail.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*/
---------------
-- pgr_maxFlow
---------------
-- ONE to ONE
--v3.0
CREATE FUNCTION pgr_maxFlow(
TEXT, -- edges_sql (required)
BIGINT, -- from_vid (required)
BIGINT) -- to_vid (required)
RETURNS BIGINT AS
$BODY$
SELECT flow
FROM _pgr_maxflow(_pgr_get_statement($1), ARRAY[$2]::BIGINT[], ARRAY[$3]::BIGINT[], algorithm := 1, only_flow := true);
$BODY$
LANGUAGE SQL VOLATILE STRICT
COST ${COST_HIGH};
-- ONE to MANY
--v3.0
CREATE FUNCTION pgr_maxFlow(
TEXT, -- edges_sql (required)
BIGINT, -- from_vid (required)
ANYARRAY) -- to_vids (required)
RETURNS BIGINT AS
$BODY$
SELECT flow
FROM _pgr_maxflow(_pgr_get_statement($1), ARRAY[$2]::BIGINT[], $3::BIGINT[], algorithm := 1, only_flow := true);
$BODY$
LANGUAGE SQL VOLATILE STRICT
COST ${COST_HIGH};
-- MANY to ONE
--v3.0
CREATE FUNCTION pgr_maxFlow(
TEXT, -- edges_sql (required)
ANYARRAY, -- from_vids (required)
BIGINT) -- to_vid (required)
RETURNS BIGINT AS
$BODY$
SELECT flow
FROM _pgr_maxflow(_pgr_get_statement($1), $2::BIGINT[], ARRAY[$3]::BIGINT[], algorithm := 1, only_flow := true);
$BODY$
LANGUAGE SQL VOLATILE STRICT
COST ${COST_HIGH};
-- MANY to MANY
--v3.0
CREATE FUNCTION pgr_maxFlow(
TEXT, -- edges_sql (required)
ANYARRAY, -- from_vids (required)
ANYARRAY) -- to_vids (required)
RETURNS BIGINT AS
$BODY$
SELECT flow
FROM _pgr_maxflow(_pgr_get_statement($1), $2::BIGINT[], $3::BIGINT[], algorithm := 1, only_flow := true);
$BODY$
LANGUAGE SQL VOLATILE STRICT
COST ${COST_HIGH};
-- COMBINATIONS
--v3.2
CREATE FUNCTION pgr_maxFlow(
TEXT, -- edges_sql (required)
TEXT) -- combinations_sql (required)
RETURNS BIGINT AS
$BODY$
SELECT flow
FROM _pgr_maxflow(_pgr_get_statement($1), _pgr_get_statement($2), algorithm := 1, only_flow := true);
$BODY$
LANGUAGE SQL VOLATILE STRICT
COST ${COST_HIGH};
COMMENT ON FUNCTION pgr_maxFlow(TEXT, BIGINT, BIGINT)
IS 'pgr_maxFlow(One to One)
- Directed graph
- Parameters:
- edges SQL with columns: id, source, target, capacity [,reverse_capacity]
- from vertex
- to vertex
- Documentation:
- ${PROJECT_DOC_LINK}/pgr_maxFlow.html
';
COMMENT ON FUNCTION pgr_maxFlow(TEXT, BIGINT, ANYARRAY)
IS 'pgr_maxFlow(One to Many)
- Directed graph
- Parameters:
- edges SQL with columns: id, source, target, capacity [,reverse_capacity]
- from vertex
- to ARRAY[vertices identifiers]
- Documentation:
- ${PROJECT_DOC_LINK}/pgr_maxFlow.html
';
COMMENT ON FUNCTION pgr_maxFlow(TEXT, ANYARRAY, BIGINT)
IS 'pgr_maxFlow(Many to One)
- Directed graph
- Parameters:
- edges SQL with columns: id, source, target, capacity [,reverse_capacity]
- from ARRAY[vertices identifiers]
- to vertex
- Documentation:
- ${PROJECT_DOC_LINK}/pgr_maxFlow.html
';
COMMENT ON FUNCTION pgr_maxFlow(TEXT, ANYARRAY, ANYARRAY)
IS 'pgr_maxFlow(Many to Many)
- Directed graph
- Parameters:
- edges SQL with columns: id, source, target, capacity [,reverse_capacity]
- from ARRAY[vertices identifiers]
- to ARRAY[vertices identifiers]
- Documentation:
- ${PROJECT_DOC_LINK}/pgr_maxFlow.html
';
COMMENT ON FUNCTION pgr_maxFlow(TEXT, TEXT)
IS 'pgr_maxFlow(Combinations)
- Directed graph
- Parameters:
- Edges SQL with columns: id, source, target, capacity [,reverse_capacity]
- Combinations SQL with columns: source, target
- Documentation:
- ${PROJECT_DOC_LINK}/pgr_maxFlow.html
';
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