[rules-users] Variable length sliding windows?
I'm evaluating the use of Drools Fusion for a new project and have a question about sliding windows that wasn't clear from the documentation. Does the time specification in a sliding window need to be hardcoded in the rule, or can it be derived from something else? Basically, I'm wondering whether I can write a rule that looks something like when ... Window ($win : length) Number (intValue $someValue) from accumulate ( Sample($len: length, value $someThreashold) over window:time ($win), sum($len) ) then ... end I know window:time() supports constant values like 10m, but can the window be driven from one of the other facts in the LHS picked up by the LHS of the rule? Will Lauer CA Technologies Sr Software Architect Tel: +1-713-625-9410 Cell: +1-979-820-2210 will.la...@ca.com ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
Re: [rules-users] Variable length sliding windows?
Nope, only constants. Edson On Thu, Mar 1, 2012 at 11:25 AM, Lauer, Will C will.la...@ca.com wrote: I'm evaluating the use of Drools Fusion for a new project and have a question about sliding windows that wasn't clear from the documentation. Does the time specification in a sliding window need to be hardcoded in the rule, or can it be derived from something else? Basically, I'm wondering whether I can write a rule that looks something like when ... Window ($win : length) Number (intValue $someValue) from accumulate ( Sample($len: length, value $someThreashold) over window:time ($win), sum($len) ) then ... end I know window:time() supports constant values like 10m, but can the window be driven from one of the other facts in the LHS picked up by the LHS of the rule? Will Lauer CA Technologies Sr Software Architect Tel: +1-713-625-9410 Cell: +1-979-820-2210 will.la...@ca.com ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users -- Edson Tirelli JBoss Drools Core Development JBoss by Red Hat @ www.jboss.com ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
Re: [rules-users] Variable length sliding windows?
Don't you fret because this isn't available. It's not difficult to collect facts over a variable interval, provided the timestamp is a regular property. An auxiliary fact defines the window's boundaries, and then you use ops like = to select the facts. -W On 1 March 2012 17:25, Lauer, Will C will.la...@ca.com wrote: I'm evaluating the use of Drools Fusion for a new project and have a question about sliding windows that wasn't clear from the documentation. Does the time specification in a sliding window need to be hardcoded in the rule, or can it be derived from something else? Basically, I'm wondering whether I can write a rule that looks something like when ... Window ($win : length) Number (intValue $someValue) from accumulate ( Sample($len: length, value $someThreashold) over window:time ($win), sum($len) ) then ... end I know window:time() supports constant values like 10m, but can the window be driven from one of the other facts in the LHS picked up by the LHS of the rule? Will Lauer CA Technologies Sr Software Architect Tel: +1-713-625-9410 Cell: +1-979-820-2210 will.la...@ca.com ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users ___ rules-users mailing list rules-users@lists.jboss.org https://lists.jboss.org/mailman/listinfo/rules-users
