Format

SDO_UTIL.FROM_GML311GEOMETRY(
     geometry     IN CLOB,  
     srsNamespace IN VARCHAR2 DEFAULT NULL 
     ) RETURN SDO_GEOMETRY;

or

SDO_UTIL.FROM_GML311GEOMETRY(
     geometry     IN CLOB, 
     srsNamespace IN VARCHAR2, 
     coordOrder   IN NUMBER 
     ) RETURN SDO_GEOMETRY;

or

SDO_UTIL.FROM_GML311GEOMETRY(
     geometry  IN VARCHAR2, 
     srsNamespace  IN VARCHAR2 DEFAULT NULL 
     ) RETURN SDO_GEOMETRY;

or

SDO_UTIL.FROM_GML311GEOMETRY(
     geometry  IN VARCHAR2, 
     coordOrder  IN NUMBER DEFAULT NULL 
     ) RETURN SDO_GEOMETRY;

or

SDO_UTIL.FROM_GML311GEOMETRY(
     geometry  IN VARCHAR2, 
     srsNamespace  IN VARCHAR2, 
     coordOrder  IN NUMBER 
     ) RETURN SDO_GEOMETRY;

Description

Converts a geography markup language (GML 3.1.1) fragment to a Spatial geometry object.

Parameters

geometry

Geometry in GML version 3.1.1 format to be converted to SDO_GEOMETRY format.

srsNamespace

(Reserved for Oracle use.)

coordOrder

If the data in GML format is in latitude/longitude format instead of the longitude/latitude format used by Oracle Spatial, specify 1 for this parameter. Otherwise, do not specify this parameter. (See the Usage Notes for more information.)

Usage Notes

The input geometry must be a valid GML fragment describing a GML version 3.1.1 geometry type defined in the Open GIS Implementation Specification.

Some EPSG geodetic coordinate systems have the axis order reversed in their definition. For such SRIDs, the data in the GML format might come in as latitude/longitude instead of longitude/latitude. If such GML is to be converted to the SDO_GEOMETRY type, the coordOrder parameter should be specified as 1 so that the latitude/longitude values are converted to longitude/latitude, because longitude/latitude is the order used in the SDO_GEOMETRY type.

Examples

The following example shows conversion to and from GML version 3.1.1 format. (The example uses the definitions and data from Simple Example: Inserting_ Indexing_ and Querying Spatial Data, specifically the cola_b geometry from the COLA_MARKETS table.)

DECLARE
  gmlgeom CLOB;
  geom_result SDO_GEOMETRY;
  geom SDO_GEOMETRY;  
BEGIN
SELECT c.shape INTO geom FROM cola_markets c WHERE c.name = 'cola_b';
 
-- To GML 3.1.1 geometry
gmlgeom := SDO_UTIL.TO_GML311GEOMETRY(geom);
DBMS_OUTPUT.PUT_LINE('To GML 3.1.1 geometry result = ' || TO_CHAR(gmlgeom));
 
-- From GML 3.1.3 geometry
geom_result := SDO_UTIL.FROM_GML311GEOMETRY(gmlgeom);
 
END;
/
To GML 3.1.1 geometry result = <gml:Polygon srsName="SDO:"
xmlns:gml="http://www.opengis.net/gml"><gml:exterior><gml:LinearRing><gml:posLis
t srsDimension="2">5.0 1.0 8.0 1.0 8.0 6.0 5.0 7.0 5.0 1.0
</gml:posList></gml:LinearRing></gml:exterior></gml:Polygon>
 
PL/SQL procedure successfully completed.

Related Topics

• SDO_UTIL.FROM_GMLGEOMETRY

• SDO_UTIL.TO_GML311GEOMETRY

• SDO_UTIL.TO_GMLGEOMETRY