[rules-users] Facing Problem in BRL
Michael Anstis
michael.anstis at gmail.com
Wed May 18 05:22:34 EDT 2011
This looks rogue:-
//Add imports, globals etc here which will be used by all the rule assets
in this folder
Can you post the content of your drools.packages file?
On 18 May 2011 10:19, Sumeet Karawal <sumeet.karawal at tcs.com> wrote:
> 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: sumeet.karawal at tcs.com
>
>
>
> From: "Abhay B. Chaware" <Abhay.Chaware at kpitcummins.com>
>
> To: Rules Users List <rules-users at lists.jboss.org>
>
> Date: 05/18/2011 02:47 PM
>
> Subject: Re: [rules-users] Facing Problem in BRL
>
> Sent by: rules-users-bounces at lists.jboss.org
>
>
>
>
>
>
> 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: rules-users-bounces at lists.jboss.org [
> mailto:rules-users-bounces at lists.jboss.org] 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: sumeet.karawal at tcs.com
>
>
>
> From: "Abhay B. Chaware" <Abhay.Chaware at kpitcummins.com>
>
>
> To: Rules Users List <rules-users at lists.jboss.org>
>
>
> Date: 05/18/2011 01:09 PM
>
>
> Subject: Re: [rules-users] Facing Problem in BRL
>
>
> Sent by: rules-users-bounces at lists.jboss.org
>
>
>
>
>
>
>
> 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: rules-users-bounces at lists.jboss.org [
> mailto:rules-users-bounces at lists.jboss.org] 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: sumeet.karawal at tcs.com
>
>
>
> From: "Abhay B. Chaware" <Abhay.Chaware at kpitcummins.com>
>
>
> To: Rules Users List <rules-users at lists.jboss.org>
>
>
> Date: 05/18/2011 11:42 AM
>
>
> Subject: Re: [rules-users] Facing Problem in BRL
>
>
> Sent by: rules-users-bounces at lists.jboss.org
>
>
>
>
>
>
>
> Could you post your rule content here ?
>
>
> -----Original Message-----
> From: rules-users-bounces at lists.jboss.org [
> mailto:rules-users-bounces at lists.jboss.org] On Behalf Of Sumeet Karawal
> Sent: Wednesday, May 18, 2011 11:38 AM
> To: rules-users at lists.jboss.org
> 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: sumeet.karawal at tcs.com
> Website: http://www.tcs.com
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