problem in firing dependent rules..
by Sudhir M
Hi All,
I don't know whether I have encountered a strange problem or my
understanding of drools is wrong.
I have 3 rules out of which two are dependent. Between the dependent ones
one rule makes the other rule eligible to fire but I don't know why the
dependent rule is not firing. Below are the rules I have written.
package com.valueMomentum;
import com.valuemomentum.eligibilitymodel.oo.*;
import java.util.ArrayList;
global java.util.ArrayList list;
rule "PolicyTierClassification"
no-loop true
when
healthInsuredbindings : HealthInsured( weight >= 134 , weight < 157 , height
== "4ft 10in" , gender == "Male" )
then
healthInsuredbindings.setPolicyTier("Standard I");
System.out.println("PolicyTierClassification");
list.add("To determine tier based on insured gender, height and
weight(weight>=134 , weight<157 , height==4ft 10in , gender==Male ) ->
(PolicyTier = Standard I)"); ;end
rule "AlcoholConsumptionClassRule"
no-loop true
when
healthInsuredbindings : HealthInsured( alcoholConsumptionFrequencyPerWeek ==
"2-3" )
then
healthInsuredbindings.setAlcoholConsumptionClass("B");
System.out.println("AlcoholConsumptionClassRule");
list.add("To derive the alcohol consumption class based on consumption
frequencyalcoholConsumptionFrequencyPerWeek==2-3 -> (AlcoholConsumptionClass
= B)"); end
rule "UnderwritingFactorRule"
no-loop true
when
healthInsuredbindings : HealthInsured( alcoholConsumptionClass =="B" )
then
healthInsuredbindings.setUnderwritingFactor(1);
System.out.println("UnderwritingFactorRule");
list.add("To derive UnderwritingFactor from alcoholConsumptionClass==B
-> (UnderwritingFactor = 1)");end
this my initial fact HealthInsured healthInsured = new HealthInsured();
healthInsured.setAge(25);
healthInsured.setGender("Male");
healthInsured.setWeight(140);
healthInsured.setHeight("4ft 10in");
healthInsured.setTobaccoUser("No");
healthInsured.setMotorcycleRider("No");
healthInsured.setRelationToInsured("Insured");
healthInsured.setUnderwritingFactor(0);
healthInsured.setPolicyTier("Preferred");
healthInsured.setAlcoholConsumptionFrequencyPerWeek("2-3");
healthInsured.setAlcoholConsumptionClass("A");
Based on the above fact PolicyTierClassification, AlcoholConsumptionClassRule
are eligible to fire. AlcoholConsumptionClassRule is setting a property
alcoholConsumptionClass to B based on which UnderwritingFactorRule rule
becomes eligible fire but in this case the dependent rule is not firing. I
think we can use update in AlcoholConsumptionClassRule but I think if we
have to manage those dependencies it will be more error prone and the
results are might be more inconsistent.
I have tested it Using RETEOO in drools 3.x and 4.x which yields me the same
results. But when I used LEAPS algorithm then i even got the dependent rule
i.e UnderwritingFactorRule rule also fired.
Thanks in Advance,
sudhir.
15 years, 11 months
Accessing a property of an Enum (LHS)
by Gras, Patrick
Hi,
I'm trying to access to a property of an Enum but I get the following error:
Unable to create restriction '[QualifiedIndentifierRestr: == Direction.S.name ]' for field 'directionAsString' in the rule 'enum test'
Here is the code for my Enum:
public enum Direction {
N("North"), S("South"), E("East"), W("West");
private final String name;
private Direction(String name) {
this.name = name;
}
public String getName() {
return this.name;
}
}
And here is my Rule:
rule "enum test"
when
$to : TestObject($ds: directionAsString == Direction.S.name);
then
System.err.println("OK");
end
Is there a reason why I cannot do that ?
Thanks for your help
-Patrick
Patrick Gras
GENERALI Assurances
Service Informatique
Avenue Perdtemps 23
1260 Nyon 1
Tél. direct: +41 58 471 05 87
<mailto:patrick.gras@generali.ch>
P Please consider the environment before printing this E-Mail!
15 years, 11 months
Drools 5 migration
by Steven Williams
Hi guys,
I have migrated my code over to Drools 5 and now regular expressions have to
be escaped. e.g. where previously I had
name matches "^\s*$"
instead I have to put
name matches "^\\s*$"
Is this a bug or am I missing a setting or something? I am running against
the 5 snapshot.
thanks
Steve
--
Steven Williams
Supervising Consultant
Object Consulting
Office: 8615 4500 Mob: 0439 898 668 Fax: 8615 4501
steven.williams(a)objectconsulting.com.au
www.objectconsulting.com.au
consulting | development | training | support
our experience makes the difference
15 years, 11 months
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15 years, 11 months
Drools BRMS in tomcat 5.0
by Divakar B K
Hi
I have configured the BRMS in tomcat5.0.
I am trying to build the package, getting the following error.
An error occurred executing the action.
Details
java.lang.NullPointerException at
java.io.StringReader.<init>(StringReader.java:33) at
org.drools.brms.server.contenthandler.DRLFileContentHandler.compile(DRLF
ileContentHandler.java:32) at
org.drools.brms.server.builder.ContentPackageAssembler.buildAsset(Conten
tPackageAssembler.java:139) at
org.drools.brms.server.builder.ContentPackageAssembler.buildPackage(Cont
entPackageAssembler.java:127) at
org.drools.brms.server.builder.ContentPackageAssembler.<init>(ContentPac
kageAssembler.java:84) at
org.drools.brms.server.builder.ContentPackageAssembler.<init>(ContentPac
kageAssembler.java:92) at
org.drools.brms.server.ServiceImplementation.buildPackage(ServiceImpleme
ntation.java:781) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native
Method) at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.jav
a:39) at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessor
Impl.java:25) at java.lang.reflect.Method.invoke(Method.java:585) at
org.jboss.seam.util.Reflections.invoke(Reflections.java:21) at
org.jboss.seam.intercept.RootInvocationContext.proceed(RootInvocationCon
text.java:31) at
org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationCon
text.java:56) at
org.jboss.seam.transaction.RollbackInterceptor.aroundInvoke(RollbackInte
rceptor.java:31) at
org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationCon
text.java:68) at
org.jboss.seam.core.BijectionInterceptor.aroundInvoke(BijectionIntercept
or.java:46) at
org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationCon
text.java:68) at
org.jboss.seam.core.MethodContextInterceptor.aroundInvoke(MethodContextI
nterceptor.java:42) at
org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationCon
text.java:68) at
org.jboss.seam.security.SecurityInterceptor.aroundInvoke(SecurityInterce
ptor.java:40) at
org.jboss.seam.intercept.SeamInvocationContext.proceed(SeamInvocationCon
text.java:68) at
org.jboss.seam.intercept.RootInterceptor.invoke(RootInterceptor.java:106
) at
org.jboss.seam.intercept.JavaBeanInterceptor.interceptInvocation(JavaBea
nInterceptor.java:155) at
org.jboss.seam.intercept.JavaBeanInterceptor.invoke(JavaBeanInterceptor.
java:91) at
org.drools.brms.server.ServiceImplementation_$$_javassist_3.buildPackage
(ServiceImplementation_$$_javassist_3.java) at
sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.jav
a:39) at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessor
Impl.java:25) at java.lang.reflect.Method.invoke(Method.java:585) at
org.jboss.seam.remoting.gwt.GWTToSeamAdapter.callWebRemoteMethod(GWTT
Best Regards,
Divakar.BK
Sonata Software Limited
Phone : 91 80 22489390 -Extn: 8445
15 years, 11 months
Drools nightly snapshot
by Steven Williams
Hi all,
I was wondering if anyone knows how to get the nightly snapshot for Drools 5
via maven?
I am using the http://snapshots.jboss.org/maven2 repository but the snapshot
jars have different names to what I was expecting (e.g.
drools-core-5.0.0.20081110.114826-277.jar as opposed to
drools-core-5.0.0-SNAPSHOT.jar). Can anyone tell me what settings I should
use in my pom to get the latest version?
thanks
Steve
--
Steven Williams
Supervising Consultant
Object Consulting
Office: 8615 4500 Mob: 0439 898 668 Fax: 8615 4501
steven.williams(a)objectconsulting.com.au
www.objectconsulting.com.au
consulting | development | training | support
our experience makes the difference
15 years, 11 months
Guvnor - How to define custom accumulate function
by Srinivasan Muthu
I have a custom accumulate function written in java which I use in my rules.
To make this work in eclipse, I had to define this function in
drools.packagebuilder.conf file and put that in the root of the project.
Drools.packagebuilder.conf file content:
drools.accumulate.function.groupCount =
com.company.analysis.accumulators.GroupByAccumulateFunction
When I try the same in guvnor, I am not sure where to define this custom
function (similar to drools.packagebuilder.conf file) so that my rules will
get built into a package. Currently when I build the package from guvnor, I
get the following error:
Unable to build expression for 'accumulate' : No accumulator function found
for identifier: groupCount
This is because the drl file doesn't know how to interpret the "groupCount"
function as its not defined anywhere.
I looked up the documentation and the mailing list and couldn't find any
solution. I also tried importing the whole drools.packagebuilder.conf file
into guvnor and that doesn't seem to work as well.
Thanks for your help,
Srini
15 years, 11 months
Dsl and drl files in different locations
by Anselmo Abadía
Hi, I'm using Drools 4.
I have a dsrl file that imports a dsl file (using expander). My problem
is that the files are located in a different location. The dsrl file
can´t see the dsl file.
Any suggestions?
Thanks,
Anselmo
15 years, 11 months
Delimited Number groups filtering ?
by Maxim Veksler
Hello,
The dataModel is as following:
class AgeRange() {
Integer code;
int minAge;
int maxAge;
}
Campaign() {
List<Integer> listOfAgeRangeCodes;
}
Subscriber() {
int age;
}
AgeRange()'s and Campaign()'s are pre-populated into the WM.
Subscriber() is asserted right before fireAllRules is called.
I need a rule that would allow me to check if Subscriber() is within one of
the defined on the Campaign() AgeRange()'s.
What would be the most efficient way to enforce this constraint?
The other possibility I see is to store the list of AgeRange()'s in each
Campaign() and then use eval() to iterate over the list...
Advice and ideas are appreciated.
Thank you,
Maxim.
--
Cheers,
Maxim Veksler
"Free as in Freedom" - Do u GNU ?
15 years, 11 months
