This is the output that I get :
//This is a package configuration file
package com.rules;
import com.model.PersonDetails;
//Add imports, globals etc here which will be used by all the rule assets
in this folder.rule "example"
dialect "mvel"
when
$person : PersonDetails( age < "20" )
then
$person.setDiscount( 10 );
end
java.lang.RuntimeException: [8,1]: [ERR 102] Line 8:1 mismatched input
'WHEN'
Regards,
Sumeet Karawal
Mailto: [email protected]
From: "Abhay B. Chaware" <[email protected]>
To: Rules Users List <[email protected]>
Date: 05/18/2011 02:47 PM
Subject: Re: [rules-users] Facing Problem in BRL
Sent by: [email protected]
Can you write the outputDRL to System.out and check if the generated DRL
syntax is correct ?
System.out.println(outputDRL);
Before instantiating KnowledgeBuilder
-----Original Message-----
From: [email protected] [
mailto:[email protected]] On Behalf Of Sumeet Karawal
Sent: Wednesday, May 18, 2011 2:42 PM
To: Rules Users List
Subject: Re: [rules-users] Facing Problem in BRL
I tried to use this also but now I am getting different error:
java.lang.RuntimeException: [8,1]: [ERR 102] Line 8:1 mismatched input
'WHEN'
Also, what is the significance of the first line. I have copied it as the
same.
My code is :
String curDir = System.getProperty("user.dir");
String fileName = curDir + "\\src\\com\\rules
\\drools.package";
String rulePackageContent = FileUtils.readFileToString(new
File
(fileName));
fileName = curDir + "\\src\\com\\rules\\example.brl";
String brl = FileUtils.readFileToString(new File(fileName));
BRLPersistence read = BRXMLPersistence.getInstance();
BRLPersistence write = BRDRLPersistence.getInstance();
String outputDRL = rulePackageContent + write.marshal
(read.unmarshal
(brl));
KnowledgeBuilder builder = KnowledgeBuilderFactory.
newKnowledgeBuilder();
builder.add(ResourceFactory.newReaderResource(new StringReader
(outputDRL)), ResourceType.DRL);
if (builder.hasErrors()) {
throw new RuntimeException (builder.getErrors().toString ());
}
KnowledgeBase knowledgeBase = KnowledgeBaseFactory.newKnowledgeBase();
knowledgeBase.addKnowledgePackages(builder.getKnowledgePackages ());
I don't know where I am getting this wrong.
Regards,
Sumeet Karawal
Mailto: [email protected]
From: "Abhay B. Chaware" <[email protected]>
To: Rules Users List <[email protected]>
Date: 05/18/2011 01:09 PM
Subject: Re: [rules-users] Facing Problem in BRL
Sent by: [email protected]
I haven't been able to get "ResourceType.BRL" to work. This is how I do
it ..
String curDir = System.getProperty("user.dir");
String fileName = curDir + "\\src\\main\\rules\\drools.package";
String rulePackageContent = FileUtils.readFileToString(new File(fileName));
fileName = curDir + "\\src\\main\\rules\\eligibility.brl";
String brl = FileUtils.readFileToString(new File(fileName));
BRLPersistence read = BRXMLPersistence.getInstance();
BRLPersistence write = BRDRLPersistence.getInstance();
String outputDRL = rulePackageContent + write.marshal(read.unmarshal(brl));
KnowledgeBuilder kbuilder = KnowledgeBuilderFactory.newKnowledgeBuilder();
kbuilder.add(ResourceFactory.newReaderResource(new StringReader
(outputDRL)), ResourceType.DRL);
Try this.
-abhay
-----Original Message-----
From: [email protected] [
mailto:[email protected]] On Behalf Of Sumeet Karawal
Sent: Wednesday, May 18, 2011 11:47 AM
To: Rules Users List
Subject: Re: [rules-users] Facing Problem in BRL
This is the brl that I have created:
(Embedded image moved to file: pic18001.jpg)
Regards,
Sumeet Karawal
Mailto: [email protected]
From: "Abhay B. Chaware" <[email protected]>
To: Rules Users List <[email protected]>
Date: 05/18/2011 11:42 AM
Subject: Re: [rules-users] Facing Problem in BRL
Sent by: [email protected]
Could you post your rule content here ?
-----Original Message-----
From: [email protected] [
mailto:[email protected]] On Behalf Of Sumeet Karawal
Sent: Wednesday, May 18, 2011 11:38 AM
To: [email protected]
Subject: [rules-users] Facing Problem in BRL
Hi,
I am using Drools-Expert. I am having a class "Person" with data members as
age and discount.
I am trying to create a .brl. I have these statements in drools.package
package com.rules;
import com.model.PersonDetails;
and in the example.brl I am providing the details of when and then
conditions
but on execution I am getting the following error :
java.lang.RuntimeException: [4] Unable to expand: PersonDetails( age <
"20" )[6] Unable to expand:
PersonDetails fact0 = new
PersonDetails
();[7] Unable to expand:
fact0.setDiscount
( 10 );[8] Unable to
expand:
insert(fact0 );
It would be helpful is somebody guide me on how execute it.
Also, I am creating the knowledgebase as:
private static KnowledgeBase createKnowledgeBase() {
KnowledgeBuilder builder = KnowledgeBuilderFactory.newKnowledgeBuilder();
builder.add (ResourceFactory.newClassPathResource(
"com/rules/example.brl"),ResourceType.BRL);
if (builder.hasErrors()) {
throw new RuntimeException (builder.getErrors().toString ());
}
KnowledgeBase knowledgeBase = KnowledgeBaseFactory.newKnowledgeBase();
knowledgeBase.addKnowledgePackages(builder.getKnowledgePackages ());
return knowledgeBase;}
Thanks & Regards,
Sumeet Karawal
CEG - Open Source Technology Group
Tata Consultancy Services
Ph:- +912267782556
Cell:- +919833236440
Mailto: [email protected]
Website: http://www.tcs.com
____________________________________________
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