postgis -  functions -  public.bdpolyfromtext

Description

Function properties

Usage

result = public.bdpolyfromtext();

Code

CREATE FUNCTION bdpolyfromtext(text, integer) RETURNS geometry
    AS $_$
DECLARE
    geomtext alias for $1;
    srid alias for $2;
    mline geometry;
    geom geometry;
BEGIN
    mline := MultiLineStringFromText(geomtext, srid);

    IF mline IS NULL
    THEN
        RAISE EXCEPTION 'Input is not a MultiLinestring';
    END IF;

    geom := BuildArea(mline);

    IF GeometryType(geom) != 'POLYGON'
    THEN
        RAISE EXCEPTION 'Input returns more then a single polygon, try using BdMPolyFromText instead';
    END IF;

    RETURN geom;
END;
$_$
    LANGUAGE plpgsql IMMUTABLE STRICT;