Justin Deoliveira ha scritto: > Hi all, > > The reason for my last question about BinarySpatialOperator was this filter: > > <Filter> > <Intersects> > <PropertyName /> > <Envelope> > ... > </Envelope> > </Intersects> > </Filter> > > Note the empty property name. How i need to interpret this is as run the > intersection against every geometric attribute in the type.
Oh the horror... so this is the official WFS commitee answer? Bwhaaa, this means to have decent performance we'll have to specify which geometry property we want do deal with. Happily enough most databases are now able to do multi index access and bitmap operations among them before accessing real data, but not every db is able to do so (I suspect MySql and embedded ones do not cover this functionality, Postgres got it only in version 8.0 or 8.1 afaik...) Cheers Andrea ------------------------------------------------------------------------- Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys - and earn cash http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV _______________________________________________ Geotools-devel mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/geotools-devel
