Hi, so one requirement for this DataStore is to be "caching friendly". Yet, though doing some caching strategy specific for it, I've always thought of a "cached" datastore as a cross-cutting concern, and both Andrea's original thoughts [1] as well as Christophe Rousson's summer of code work [2] seem to share that conception.
So I guess I'm not going to do anything in particular to support caching. I think as long as a DataStore properly implements feature events would be a good candidate to be wrapped by caching one. It also makes sense for the client application to decide which of them deserve to be cached and which not. Another possibility would be to supply the DataStoreFactory some sort of implementation hint to, for example, signal the datastore to plug into a SPI discoverable cache. But, I'm not sure this is a good usage of hints. thoughts? Gabriel [1] <http://docs.codehaus.org/display/GEOTOOLS/Datastore+caching> [2] <http://docs.codehaus.org/display/GEOTOOLS/SoC+2007+Caching+data> On Thursday 10 January 2008 06:15:39 pm Jody Garnett wrote: > Gabriel Roldán wrote: > > If this seems ok, it'd imply moving some stuff around on the wfs plugin, > > mostly some package refactoring to isolate version specific code from > > general one. In my opinion it shouldn't be a problem as its the DataStore > > nature not to be API, and the only public class should be the datastore > > factory. > > This is the same approach we took for OWS-3 you can find an example of > how to subclass WFS1.0 datastore > and override just enough methods for GML3 parsing. > > The code is still available in svn here: > - http://svn.geotools.org/udig/branches/ows3/gt/owswfs/ > > While you are there see if you can make a public method for > getCapabilities() it is one of the main reasons we still > subclass WFSDataStore in uDig :-) > > This may be obvious but the approach to take is make a strictly 1.0 > datastore and a 1.1 specific datastore and let the > WFSDataStoreFactory do the version negotiation in order to choose the > correct version. You will find ShapefileDataStoreFactory > takes the same approach when choosing between ShapefileDataStore and > IndexedShapefileDataStore. > > Cheers, > Jody > > !DSPAM:4045,478652c3115422092453641! ------------------------------------------------------------------------- Check out the new SourceForge.net Marketplace. It's the best place to buy or sell services for just about anything Open Source. http://ad.doubleclick.net/clk;164216239;13503038;w?http://sf.net/marketplace _______________________________________________ Geotools-devel mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/geotools-devel
