[rules-users] FUSION jumping windows

Hi Guys, I see that there is support of sliding windows in drools fusion , my question is that is it possible to get jumping windows support ? i.e. the interval gets from (0,10) to (10,20) and so on. instead of (0,10) to (1,11). If not do you recommand implementing it using rules ? i.e will the performance hits be too big compared with the builtin support ? Thanks k-