FW: [rules-users] FW: Decision Tables
Hehl, Thomas
Thomas.Hehl at acs-inc.com
Wed Aug 29 14:44:00 EDT 2007
The reason that I feel that this is AT LEAST a documentation bug is that I
believe that I've coded my answer exactly as the ExamplePricingPolicy is
coded, but it produces invalid rules.
Can someone please confirm that I'm doing this right or tell me what I'm
doing wrong? Doesn't anyone on this list use decision tables and have some
counsel?
Thanks.
_____
From: Hehl, Thomas
Sent: Wednesday, August 29, 2007 1:23 PM
To: 'Rules Users List'
Subject: RE: [rules-users] FW: Decision Tables
Got that. How do I code the action so it calls the setAnswer() method on my
BooleanAnswer object?
_____
From: rules-users-bounces at lists.jboss.org
[mailto:rules-users-bounces at lists.jboss.org] On Behalf Of Mark Proctor
Sent: Wednesday, August 29, 2007 12:59 PM
To: Rules Users List
Subject: Re: [rules-users] FW: Decision Tables
This isn't bug, you aren't using drools correctly. Only valid java can be
used in an Action. anAnswer:BooleanAnswer is not valid java and shows up in
your generated code:
anAnswer: BooleanAnswer.anAnswer.setAnswer(true);;
Hehl, Thomas wrote:
The problem appears to be that the rule being generated is just flat wrong.
I'm starting to think this is a bug in decision tables for 4.0 GA.
The following entry:
ACTION
anAnswer: BooleanAnswer
anAnswer.setAnswer($param);
Allowed
TRUE
TRUE
Generates this rule:
rule "postponePart_10"
when
PoolInfo(courtLocation == "101", statusCode >= 0, statusCode <=
2, numberFta < 1, numberOfDeferralsPosted < 2, daysBeforeSummons>= 1,
daysBeforeSummons<= 1)
then
anAnswer: BooleanAnswer.anAnswer.setAnswer(true);;
end
This doesn't seem right at all. What I'm trying to do is to call the
setAnswer method on the object I passed in with:
StatelessSession session =
participantRuleBase.newStatelessSession();
//now create some test data
PoolInfo pool = part.getActivePool();
BooleanAnswer answer = new BooleanAnswer();
Object[] rules = new Object[]{pool, answer};
session.execute(rules);
return answer.isTrue();
Advice?
Thanks.
_____
From: Hehl, Thomas
Sent: Tuesday, August 28, 2007 4:10 PM
To: 'rules-users at lists.jboss.org <mailto:rules-users at lists.jboss.org> '
Subject: Decision Tables
I'm having trouble figuring out the ACTION section of a decision table.
Everything else appears to be working.
My rules result in a simple True/False condition. To do this in a decision
table, I've created a class called BooleanAnswer that looks like:
public class BooleanAnswer {
private boolean answer;
/**
* no-arg constructor
*/
public BooleanAnswer(){
}
/**
* create your own default answer
* @param answer the answer to set
*/
public BooleanAnswer(boolean answer){
setAnswer(answer);
}
/**
* @return the answer
*/
public boolean isTrue() {
return answer;
}
/**
* @param answer the answer to set
*/
public void setAnswer(boolean answer) {
this.answer = answer;
}
}
Then I create a decision table with the following ACTION in it:
ACTION
answer: BooleanAnswer
answer.setAnswer($param);
Allowed
TRUE
This generates the following errors:
...
Caused by: org.drools.rule.InvalidRulePackage: Rule Compilation error :
[Rule name=postponePart_15, agendaGroup=MAIN, salience=0, no-loop=false]
participantPostponementRules/Rule_postponePart_15_0.java (8:343)
: The field BooleanAnswer.answer is not visible
Rule Compilation error : [Rule name=postponePart_13, agendaGroup=MAIN,
salience=0, no-loop=false]
participantPostponementRules/Rule_postponePart_13_0.java (8:343)
: The field BooleanAnswer.answer is not visible
Rule Compilation error : [Rule name=postponePart_14, agendaGroup=MAIN,
salience=0, no-loop=false]
participantPostponementRules/Rule_postponePart_14_0.java (8:343)
: The field BooleanAnswer.answer is not visible
Rule Compilation error : [Rule name=postponePart_16, agendaGroup=MAIN,
salience=0, no-loop=false]
participantPostponementRules/Rule_postponePart_16_0.java (8:343)
: The field BooleanAnswer.answer is not visible
Rule Compilation error : [Rule name=postponePart_17, agendaGroup=MAIN,
salience=0, no-loop=false]
participantPostponementRules/Rule_postponePart_17_0.java (8:343)
: The field BooleanAnswer.answer is not visible
Rule Compilation error : [Rule name=postponePart_10, agendaGroup=MAIN,
salience=0, no-loop=false]
participantPostponementRules/Rule_postponePart_10_0.java (8:343)
: The field BooleanAnswer.answer is not visible
Rule Compilation error : [Rule name=postponePart_11, agendaGroup=MAIN,
salience=0, no-loop=false]
participantPostponementRules/Rule_postponePart_11_0.java (8:343)
: The field BooleanAnswer.answer is not visible
Rule Compilation error : [Rule name=postponePart_18, agendaGroup=MAIN,
salience=0, no-loop=false]
participantPostponementRules/Rule_postponePart_18_0.java (8:343)
: The field BooleanAnswer.answer is not visible
Rule Compilation error : [Rule name=postponePart_19, agendaGroup=MAIN,
salience=0, no-loop=false]
participantPostponementRules/Rule_postponePart_19_0.java (8:343)
: The field BooleanAnswer.answer is not visible
Rule Compilation error : [Rule name=postponePart_12, agendaGroup=MAIN,
salience=0, no-loop=false]
participantPostponementRules/Rule_postponePart_12_0.java (8:343)
: The field BooleanAnswer.answer is not visible
at org.drools.rule.Package.checkValidity(Package.java:408)
at
org.drools.common.AbstractRuleBase.addPackage(AbstractRuleBase.java:288)
at
com.acs.gs.juror.bizstrategy.PostponementStrategy.init(PostponementStrategy.
java:129)
... 14 more
)
at junit.framework.Assert.fail(Assert.java:47)
at junit.framework.TestSuite$1.runTest(TestSuite.java:263)
at junit.framework.TestCase.runBare(TestCase.java:127)
at junit.framework.TestResult$1.protect(TestResult.java:106)
at junit.framework.TestResult.runProtected(TestResult.java:124)
at junit.framework.TestResult.run(TestResult.java:109)
at junit.framework.TestCase.run(TestCase.java:118)
at junit.framework.TestSuite.runTest(TestSuite.java:208)
at junit.framework.TestSuite.run(TestSuite.java:203)
at
org.eclipse.jdt.internal.junit.runner.junit3.JUnit3TestReference.run(JUnit3T
estReference.java:128)
at
org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:3
8)
at
org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRu
nner.java:460)
at
org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRu
nner.java:673)
at
org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.
java:386)
at
org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner
.java:196)
Help for a newbie, please?
Thanks.
Thom Hehl
Sr. eJuror Architect
* Office (859) 277-8800 x 144
* Thomas.Hehl at acs-inc.com <mailto:Thomas.Hehl at acs-inc.com>
ACS, Inc.
Government Solutions
1733 Harrodsburg Road
Lexington, KY 40504-3617
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Thank you.
_____
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