[rules-users] Getting Started with an simple sample

[Bojan Janisch]

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.schuster at gmail.com>
An: "Rules Users List" <rules-users at 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 at lists.jboss.org
https://lists.jboss.org/mailman/listinfo/rules-users