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SDO_UTIL.TO_GMLGEOMETRY
10.1,10.1 20.1,20.1
-- Polygon with holes
SELECT TO_CHAR(
SDO_UTIL.TO_GMLGEOMETRY(sdo_geometry(2003, 262152, null,
sdo_elem_info_array(1,1003,3, 5, 2003, 1, 13, 2003, 1),
sdo_ordinate_array(10.10,10.20, 40.50, 41.10, 30.30, 30.30, 30.30,
40.10, 40.10, 40.10, 30.30, 30.30, 5, 5, 5, 6, 6, 6, 6, 5, 5, 5 )))
)
AS GmlGeometry FROM DUAL;
GMLGEOMETRY
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10.1,10
.2, 40.5,10.2, 40.5,41.1, 10.1,41.1, 10.1,10.2 30.3,30.3 30.3,40.1 40.1,40.1 30.3,30.3 5,5 5,6 6,6 6,5 5,5 <
/gml:LinearRing>
-- Creating an XMLTYPE from the GML fragment. Also useful for "pretty
-- printing" the GML output.
SET LONG 40000
SELECT XMLTYPE(
SDO_UTIL.TO_GMLGEOMETRY(sdo_geometry(2003, 262152, null,
sdo_elem_info_array(1,1003,1, 11, 2003, 1, 21, 2003, 1),
sdo_ordinate_array(10.10,10.20, 40.50,10.2, 40.5,41.10, 10.1,41.1,
10.10, 10.20, 30.30,30.30, 30.30, 40.10, 40.10, 40.10, 40.10, 30.30,
30.30, 30.30, 5, 5, 5, 6, 6, 6, 6, 5, 5, 5 )))
)
AS GmlGeometry FROM DUAL;
GMLGEOMETRY
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10.1,10
.2 40.5,10.2 40.5,41.1 10.1,41.1 10.1,10.2 30.3,30.3 30.3,40.1 40.1,40.1 40.1,30.3 30.3,30.3 5,5 5,6 6,6 6,5 5,5
The following example uses the TO_GMLGEOMETRY function with the Oracle XML
DB XMLTYPE data type and the XMLELEMENT and XMLFOREST functions.
SELECT xmlelement("State", xmlattributes(
'http://www.opengis.net/gml' as "xmlns:gml"),
xmlforest(state as "Name", totpop as "Population",
xmltype(sdo_util.to_gmlgeometry(geom)) as "gml:geometryProperty"))
AS theXMLElements FROM states WHERE state_abrv in ('DE', 'UT');
THEXMLELEMENTS
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Delaware
32-54 Oracle Spatial Developer’s Guide