Hi Klaus,
You can get that information for the full working set you have populated:
select
count(Package p | p.fromSource()) as numberOfPackages,
count(Interface i | i.fromSource()) as numberOfInterfaces,
count(Class c | c.fromSource()) as numberOfClasses,
sum(MetricPackage p | p.fromSource() | p.getNumberOfLines()) as numberOfLines
Does this help or are you interested in having that information for each project of your working set? We do not have a notion of "Eclipse project" in the database yet (although you could actually find out in which project is a compilation unit by looking at its path) but we could add that.