[Geotools-gt2-users] Performance writing SHP files

[César M. I. <ces...@gm...>]

Hello list,

I'm using Sextante through the GeoTools-Sextante bindings to create a
Graticule (using CreateGraticuleBuilder algorithm form Sextante).
This creates a shapefile containing a graticule of rectangles.

However, performance is really poor: ~ 63 minutes to just write around
14000 features.
The relevant part of code is:
				FeatureStore<SimpleFeatureType, SimpleFeature> store =
((FeatureStore<SimpleFeatureType, SimpleFeature>) getFeatureSource());
				List<Object> attributes = new ArrayList<Object>();
				attributes.add(geom);
				attributes.addAll(Arrays.asList(values));
				SimpleFeatureType ft = store.getSchema();
				FeatureCollection<SimpleFeatureType, SimpleFeature> collection =
FeatureCollections
						.newCollection();

				SimpleFeature feature = SimpleFeatureBuilder.build(ft, attributes,
SimpleFeatureBuilder.createDefaultFeatureId());
				collection.add(feature);
				store.addFeatures(collection);
Note that "geom" is a JTS geometry, and "values" is an Object[].

I've been measuring times, and 99% of the time is spent in the last line:

    store.addFeatures(collection);

Is there a better way to achieve this with GeoTools or should I bypass
the FeatureStore layer in GeoTools and go directly to ShapefileWriter?
I would really appreciate any clue on this.

Regards,

César.



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   César Martínez Izquierdo
   GIS developer
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   ETC-LUSI: http://etc-lusi.eionet.europa.eu/
   Universitat Autònoma de Barcelona (SPAIN)
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