I need a MemoryDataStore for those reasons : - I need a Geometry field, shapefile only support Point/Polygon... Only one unique type possible, I need all types - I only have one field (Geometry) and only on or two geometries in it, there's not enough features to have a important impact on performance. - Using a file/table for this... is just crazy. I need an in memory solution.
> > This kind of error occurrs for a number of things occurring togheter: > * the memory data store using a LinkedHashMap to store features (hashmap > to provide very fast fid based access, linked to preserve insertion > order) > * renderer scanning thru the map using an iterator over the original > LinkedHashMap > * editor changing the contents of the above collection while the > renderer is working on it > > Ways to solve this problem. Quick ideas are: > * have FeatureIterator objects take a snapshot of the LinkedHashMap > contents and work on top of it. Not a deep copy btw, a shallow one > that just give the iterator its own collection that no one else will > touch > * change from LinkedHashMap to something else that won't throw a > ConcurrentModificationException... could not find any. Yet, > if ArrayList was used, a loop like: > for(int i = 0; i < size(); i++) > features.get(i) > would not throw an exception > > One last thing... why are you using a MemoryDataStore? The last time I > tried it, it was very slow, significantly slower than shapefiles for > example, this is due to cloning, the same iterator that scans thru > the features collection will clone them so that any change to the > returned feature won't affect the datastore internals. > > Cheers > Andrea ____________________________________________________________ FREE ONLINE PHOTOSHARING - Share your photos online with your friends and family! Visit http://www.inbox.com/photosharing to find out more! ------------------------------------------------------------------------- This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ _______________________________________________ Geotools-devel mailing list Geotools-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/geotools-devel
