FUNCTION: MDSYS.OGC_ISCLOSED

Source

1 FUNCTION OGC_IsClosed(
2   g ST_Geometry)
3     RETURN Integer DETERMINISTIC IS
4 BEGIN
5   IF(nls_upper(OGC_GeometryType(g)) IN ('LINESTRING', 'ST_LINESTRING', 'ST_CIRCULARSTRING', 'ST_COMPOUNDCURVE')) THEN
6     RETURN TREAT(g AS ST_Curve).ST_IsClosed();
7   END IF;
8   IF(nls_upper(OGC_GeometryType(g)) IN ('MULTILINESTRING', 'ST_MULTILINESTRING', 'ST_MULTICURVE')) THEN
9     RETURN TREAT(g AS ST_MultiCurve).ST_IsClosed();
10   END IF;
11   RETURN NULL;
12 END OGC_IsClosed;