pggeodb.nancy.inra.fr/db_cefs - db_cefs on pggeodb.nancy.inra.fr

Function: _st_adjacentedges

Schema

topology

Owner

postgres

Descriptions

There is no description for function _st_adjacentedges

Options

Definition

CREATE OR REPLACE FUNCTION topology._st_adjacentedges (
 atopology varchar,
 anode integer,
 anedge integer
)
RETURNS integer [] AS
$span$
DECLARE
 ret integer[];
BEGIN
 WITH edgestar AS (
   SELECT *, count(*) over () AS cnt
   FROM topology.GetNodeEdges(atopology, anode)
 )
 SELECT ARRAY[ (
     SELECT p.edge AS prev FROM edgestar p
     WHERE p.sequence = CASE WHEN m.sequence-1 < 1 THEN cnt
                        ELSE m.sequence-1 END
   ), (
     SELECT p.edge AS prev FROM edgestar p WHERE p.sequence = ((m.sequence)%cnt)+1
   ) ]
 FROM edgestar m
 WHERE edge = anedge
 INTO ret;

 RETURN ret;
END
$span$
LANGUAGE 'plpgsql'
STABLE
CALLED ON NULL INPUT
SECURITY INVOKER
COST 100;

This file was generated with SQL Manager for PostgreSQL (www.pgsqlmanager.com) at 13/03/2014 13:23