Best way of integrating Seam and Drools is to use Seam – all three are JBoss products, work well together as well as with the JBoss extensions for Eclipse. I’d check out jboss.org for more information.

How can i integrate Drools with JSF.

can u please help.

Regards
Joyce

I am working on drools. I have a problem, i have given some rules in the .drl file and it is working.
The same i tried using decision table but i am getting the following errors.

Enter Name:
gfd
Enter age:
21
Enter Natioanality:
sdvfsd
Enter Monthly Income:
13122
Enter Years of Permanent Employment(in months):
23
org.drools.rule.InvalidRulePackage: Duplicate declaration for variable ‘loanApp’ in the rule ‘LoanApplication_11′ : [Rule name=LoanApplication_11, agendaGroup=MAIN, salience=0, no-loop=false]
Duplicate declaration for variable ‘loanApp’ in the rule ‘LoanApplication_11′ : [Rule name=LoanApplication_11, agendaGroup=MAIN, salience=0, no-loop=false]
Unable to return Declaration for identifier ‘Indian’ : [Rule name=LoanApplication_11, agendaGroup=MAIN, salience=0, no-loop=false]
Unable to create restriction ‘[VariableRestriction: == Indian ]‘ for field ‘nationality’ in the rule ‘LoanApplication_11′ : [Rule name=LoanApplication_11, agendaGroup=MAIN, salience=0, no-loop=false]
Duplicate declaration for variable ‘loanApp’ in the rule ‘LoanApplication_11′ : [Rule name=LoanApplication_11, agendaGroup=MAIN, salience=0, no-loop=false]
Duplicate declaration for variable ‘loanApp’ in the rule ‘LoanApplication_11′ : [Rule name=LoanApplication_11, agendaGroup=MAIN, salience=0, no-loop=false]
Duplicate declaration for variable ‘loanApp’ in the rule ‘LoanApplication_12′ : [Rule name=LoanApplication_12, agendaGroup=MAIN, salience=0, no-loop=false]
Duplicate declaration for variable ‘loanApp’ in the rule ‘LoanApplication_12′ : [Rule name=LoanApplication_12, agendaGroup=MAIN, salience=0, no-loop=false]
Unable to return Declaration for identifier ‘Pakistan’ : [Rule name=LoanApplication_12, agendaGroup=MAIN, salience=0, no-loop=false]
Unable to create restriction ‘[VariableRestriction: == Pakistan ]‘ for field ‘nationality’ in the rule ‘LoanApplication_12′ : [Rule name=LoanApplication_12, agendaGroup=MAIN, salience=0, no-loop=false]
Duplicate declaration for variable ‘loanApp’ in the rule ‘LoanApplication_12′ : [Rule name=LoanApplication_12, agendaGroup=MAIN, salience=0, no-loop=false]
Duplicate declaration for variable ‘loanApp’ in the rule ‘LoanApplication_12′ : [Rule name=LoanApplication_12, agendaGroup=MAIN, salience=0, no-loop=false]
Rule Compilation error : [Rule name=LoanApplication_11, agendaGroup=MAIN, salience=0, no-loop=false]
org/openbank/rules/resource/Rule_LoanApplication_11_0.java (7:373) : Approved cannot be resolved
Rule Compilation error : [Rule name=LoanApplication_12, agendaGroup=MAIN, salience=0, no-loop=false]
org/openbank/rules/resource/Rule_LoanApplication_12_0.java (7:373) : Not cannot be resolved
org/openbank/rules/resource/Rule_LoanApplication_12_0.java (7:377) : Syntax error on token “Approved”, delete this token

null
at org.drools.rule.Package.checkValidity(Package.java:424)
at org.drools.common.AbstractRuleBase.addPackage(AbstractRuleBase.java:394)
at org.openbank.rules.RulesExec1.readDecisionTable(RulesExec1.java:119)
at org.openbank.rules.RulesExec1.executeXLS(RulesExec1.java:66)
at org.openbank.rules.RulesExec1.main(RulesExec1.java:41)

can u help me out please..

Regards,
Joyce

I’m going to suggest two actions;

1) You post the message on the Drools Mailing list
2) You buy my lovely book which may or may not be able to help these and other queries (available at http://www.amazon.co.uk/dp/1847196063?tag=firstparnet-21&camp=1406&creative=6394&linkCode=as1&creativeASIN=1847196063&adid=03Q2J1X56NT3Y16NQMMQ&)

I would check the compatibility of the version of drools that you are using with version 1.4

Paul

builder.addPackageFromDrl(new InputStreamReader(MyDrools.class.getResourceAsStream(”/abc.drl”)));

Am not getting compilation errors.

The same code works fine with Eclipse.
Can anyone tell me what the problem is?

Im new to Jboss Drools. Im using this for my project work. I want to know whether using excel for rules very important. Will writing rules in a .drl file is alone sufficient. If Excel sheet is required how to write in and link it with java file.
I have tried a sample rules in drl it works. Now how can i call it from a standalone java program. Im using Eclipse 3.2. can anyone help me??

Regards,
Joyce

Can any1 tell me how to call jbpm rules file using java program? i din’t integrate drools with jbpm. Is it possible to call …..pls help me out

Thanks and Regards,
Mukesh Anand Chaurasia

If you’re following the OnJava / OReilly sample , you should be aware that the Rules format and API has changed substantially from version 2 to the current version 4.5.

The best place to start for examples and more documentation is the Drools Website
http://labs.jboss.com/drools/

Paul

I have following queries ragarding Drools(JBoss Rule Engine).
1) How we can define drl files in xml format? Is there any specific setting for the same?
2) org.drools.DroolsException and org.drools.io.RuleBaseLoader can not be resolved. Is there any jar file that i am missing.
3) newWorkingMemory( ) method is not supported by RuleBase and assertObject(StockOffer ) method is also not supported by Working Memory. Are there any alternative?
4) It will be great if i will be having any working example of web application which interacts with Drools.

I think Seam was requested by the client on this ; the advantage being that it comes from JBoss and makes integration easier.

On the other hand, Seam doesn’t have anything like the buzz / traction that (J)Ruby on Rails does.

Paul

I am still unclear as to (a) the problem that you have and (b) the steps you have taken so far to solve it.

Once I know this , then I can begin to help.

This is a good guide on how to ask for techical help: http://www.catb.org/~esr/faqs/smart-questions.html

Paul

i am asking u lot of times about drools integration with springs, if you r really a helpful person so please help sir. I tried a lot but i didnt get its out put please sir help me. i beg u. please do needful

i am full of problems almost all my project completion date comes but i didnt get ant integration resources about drools and spring.
so please help me sir,

my project life cycle is like this :

JSF(UI) + Spring + Drools
and for Data i am Hibernate

so please help me sir,

Thanks and Regards;
Suresh;

Can you be more specific as to the problem that you are having?

Paul

I tried a lot but there are lot of errors.
can u give me any example code for this.

i totally stuck here
waiting for ur reply.

thanks;
Dharavatu

The answer is really really simple.

You put the ‘call drools’ code you have just written inside a plain old java object.

You then configure the pojo using Spring in the normal manner.

This assumes that you do all DB access *outside* of drools (using something like Spring / Hibernate) and then assert the the data into Drools working memeory (like any other Java Object).

Paul

This is dharavatu, i have one doubt i wrote all drl files and a java(drool) program to fire all rules.

It is execute and i get output also but the problem is how i can integrate with spring i have created a spring beans also, but i didnt where i can cal drl file and how can i execute that drl file in spring beans give me a brief idea on this

thanks and regards;
Dharavatu

i have complete all the process, but i am confused where the spring class called.

can you tell me how to create spring class and from where i should call.

regards;
Suresh

There is no ‘integration’ needed- the jar files you need are those listed on the Spring and JBoss rules websites.

Paul

i agree with that you already provided me one example. What are jar files to need to integrate drools with spring.
if possible please give a sample project that can help me.
please Paul help me.

Thanks and Regards;
Suresh

The information you need was linked to from a previous post: http://www.firstpartners.net/kb/index.php/JBoss_DSL#Java_Code_to_load_rules_from_classpath

Paul

i didnt get any reply till now please help me.

sir its my education life please help me.

thanks and regards
SURESH

i didnt get any reply till now please help me.

sir its my education life please help me.

thanks and regards;

SURESH

Drools Integration with Spring
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
First thanks for your guides,

but clear me where and how to call a .drl file in spring.

i am using MyEclipse 5.5, if there i need any jar files please tell me that i can download.
My project end date is 23rd of this month so please help me. This is my academic project i am doing MCA final year from the university of Hyderabad, India(www.uohyd.ernet.in), if i didn’t present my project before that my all effort will waste so please help me. i need step by step process, and any required jar files, are these are open source
please do needful. if you have any demo application please mail me i will refer it.

“waiting for your response”

Thanks and Re grads;
SURESH