/* -------------------------------------------------------------------- */
/* Get layer extents, and create a corresponding polygon */
/* geometry. */
/* -------------------------------------------------------------------- */
double sExtents[] = poLayer.GetExtent(true);
Geometry/*Polygon*/ oRegion = new Geometry(ogr.wkbPolygon);
Geometry/*LinearRing*/ oRing = new Geometry(ogr.wkbLinearRing);
if (sExtents == null) {
System.err.print("GetExtent() failed on layer "+poLayer.GetLayerDefn().GetName()+" of "+args[nFirstSourceDataset]+", skipping.\n");