Hi Bojan, thanks a lot for your fast response.
but how can I guarantee that there is only one textfile per detector created, even if the detecor has a value above 5 for a longer time? Obviously the method for textfile-creation could check if there already exists a file on the filesystem, but that doesn't feel "drools-like" to me. further ideas? thanks Stefan 2013/4/26 Bojan Janisch <bojan.jani...@scai.fraunhofer.de> > Hi Stefan, > > after you know what in the knowledgesession shall be, you have to think > how you could check the value that the detectors return. For this you could > create a new class e.g. MeasureResult which contains the result of the > detectors. So instead of inserting the value, you insert the object (that > contains the value) into the session. Now your rule only have to check if > there is a MeasureResult object and depending on the value, do something. > > For example: > > rule "Measure >= 5" > when > MeasureResult(result >= 5) > then > //insert textfile creation here > end > > rule "Measure <= 3" > when > MeasureResult(result <= 3) > then > //insert textfile deletion here > end > > Of course for these rules your MeasureResult class need a variable called > result and getter-Methods for it. > > Greetings > Bojan > > > > ----- Ursprüngliche Mail ----- > Von: "Stefan Schuster" <stefan.m.schus...@gmail.com> > An: "Rules Users List" <rules-users@lists.jboss.org> > Gesendet: Freitag, 26. April 2013 11:30:40 > Betreff: [rules-users] Getting Started with an simple sample > > > > > > Hello, > > I’m still in the phase of learning the basics with drools. Therefor I > created a simplified problem that I try to realize it with drools: > > I have several detectors, each of them measures something and converts it > into an integer value between 1 one 6. Every Minute a new measurement is > performed. > > When a detector reaches a value of 5 or above, a textfile is created with > the name of the detector as filename and a predefined text as content. When > the detector reaches a value of 3 or less, the texfile is deleted. > > My problem is that I’m still “thinking in java” and not yet “thinking in > drools”. > > I guess the measured values would be facts that I insert (like the > key-pressed events in the pong-example) to the knowledgebase. But now I > stumble, I have no idea how to continue. Could anyone give me a helping > hand for the next steps? > > Thanks in advance > > Stefan > _______________________________________________ > 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
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