return sfi;
}
public void buildIndex() throws DriverException {
index = new QuadTree(sds.getFullExtent(), 5);
deletedRows = new ArrayList<Integer>();
for (int i = 0; i < sds.getRowCount(); i++) {
org.gdbms.engine.spatial.Geometry g = sds.getFMapGeometry(i);
if (g != null) {
index.add(g.getBounds2D(), new Integer(i));