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" <[email protected]>
An: "Rules Users List" <[email protected]>
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
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