[Newbie question]: create polygons from linestrings...

I need a good place to start using Oracle Spatial and Topology functionalities, so... my goal is this: I'm creating a table with SDO_GEOMETRY as linestrings; some of these linestrings are closed, and i need to build a topology and then extracts the polygon geometries build and create a new table with this polygons.
Here (http://download.oracle.com/docs/html/B14256_01/sdo_topo_concepts.htm#i885918) i've read how to create a topology from spatial data, ut i'm unable to find how extract SDO_GEOMETRY elements like polygons from the topology itself...
Any suggestion? Thanks in advance :)
Message was edited by:
user587028

Great question! One of the member functions for the SDO_TOPO_GEOMETRY type is GET_GEOMETRY() which simply outputs a Topo geometry as an SDO_GEOMETRY. Hence, if you wanted to output SDO_GEOMETRY from a parcels feature you could do the following:
select a.feature.get_geometry() from parcels_poly a;
Hope this helps.
-Justin

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Here's what I found as to how to associate a topic with the book:
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[Newbie question]: create polygons from linestrings...

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